Universal bridge support for old bridge replacement

Abstract

The utility model discloses a universal bridge support for old bridge replacement. The universal bridge support comprises a lower support plate, a spherical crown lining plate, an upper support plate, a rigid cushion block and a switching assembly. A rotating friction pair is arranged between the lower support plate and the spherical crown lining plate, and a sliding friction pair is arranged between the spherical crown lining plate and the upper support plate; the adapter assembly comprises a lower adapter plate arranged at the bottom of the lower support plate and / or an upper adapter plate arranged at the top of the upper support plate; the rigid cushion block is arranged between the support and the bridge pier, and a plurality of anchorage holes are formed in the bottom of the rigid cushion block, so that when the rigid cushion block faces different bridges, original anchorage steel rods on the bridge pier are directly utilized, the top of the rigid cushion block is arranged to be of various height specifications, and the overall height of the support can be matched with original supports of different heights; the support can be replaced without extra construction on a bridge, meanwhile, the universality of the support is improved, and the support can meet all height requirements of replacement of an existing bridge support.

Description

Technical Field

[0001] The embodiments of the utility model belong to the field of bridge bearings, and more specifically, relate to a universal bridge bearing used for replacing old bridges. Background Art

[0002] Bridge bearings are important components that connect the upper and lower structures of bridges. They can reliably transmit the reaction force and deformation (displacement and rotation) of the upper structure of the bridge to the lower structure of the bridge. However, as the use time of bridges that were built earlier increases, their bearings begin to age a lot. Many bearings need to be repaired, and a large part of the bearings must be replaced. The conventional bridge bearings installed in existing bridges are of various types, and with the elimination of old products, a large number of bearings that need to be replaced are difficult to find replacement products. Re-customizing the bearings that need to be replaced for different bridges will cause a lot of waste of manpower, material and financial resources. Most of the bridge bearings on the market do not have a unified standard for size, especially height, which causes great inconvenience to the replacement of bridge bearings.

[0003] Currently, there is an easy-to-replace bridge bearing on the market. The bearing structure is mainly composed of an upper seat plate, a lower seat plate and an intermediate lining plate. The intermediate lining plate plays a key role in rotation and translation connection between the upper and lower seat plates. In particular, a pad is provided under the lower seat plate, and a sliding friction pair is provided between the two to reduce friction and facilitate the disassembly and assembly of the bearing. Three guide plates are provided on the top of the pad, arranged in a herringbone shape, providing a guide path for the accurate positioning of the new bearing. When replacing the bearing, you only need to release the limit structure and directly push the bearing out, which realizes efficient and simple bearing replacement.

[0004] However, this type of bearing only solves the problem of convenient replacement, and there is still the problem that the bearings on the existing bridges are difficult to replace due to different specifications. Therefore, a universal bridge bearing for replacing old bridges is needed to replace bearings of different heights and sizes on old bridges and improve the versatility of bearing replacement. Utility Model Content

[0005] In view of the above defects or improvement needs of the prior art, the utility model provides a universal bridge bearing for replacing old bridges. By adding steel pads of different heights at the bottom of the bearing, the height of the original bearing is lowered so that the overall height of the bearing can match the original bearings of different heights, thereby achieving replacement of the bearing without additional construction on the bridge. At the same time, the versatility of the bearing is improved so that it can meet all height requirements for replacement of existing bridge bearings.

[0006] To achieve the above object, an embodiment of the present utility model provides a general bridge bearing for replacing old bridges, including: a lower bearing plate, a spherical crown liner, an upper bearing plate, a rigid cushion block, and an adapter assembly;

[0007] A rotational friction pair is provided between the lower bearing plate and the spherical crown liner, and a sliding friction pair is provided between the spherical crown liner and the upper bearing plate;

[0008] The adapter assembly includes a lower adapter plate provided at the bottom of the lower bearing plate and / or an upper adapter plate provided at the top of the upper bearing plate;

[0009] The rigid cushion block is provided between the bearing and the bridge pier, and a plurality of anchor holes are opened at its bottom, so that when facing different bridges, the original anchor steel bars on the bridge pier can be directly utilized, and the top is set to multiple height specifications to improve the versatility of the bearing and make it applicable to the heights of various original bearings.

[0010] Further, it further includes a load transfer plate;

[0011] The load transfer plate is provided between the lower adapter plate and the lower bearing plate and / or between the upper adapter plate and the upper bearing plate.

[0012] Further, the load transfer plate is made of a flexible material and is used to ensure the close fit between the lower adapter plate and the lower bearing plate.

[0013] Further, the upper structure of the rigid cushion block includes an adjustment frame, adjustment gaskets, and adjustment pads.

[0014] Further, the adjustment pad and the bottom of the rigid cushion block are combined into a box body with an open top surface, and a vertical groove is opened in the middle of one side along the height direction.

[0015] Further, the top of the adjustment pad is a square block, which is fixedly connected to the bottom structure of the bearing through bolts. A connecting seat is provided at the bottom of the square block of the adjustment pad. The cross-section of the connecting seat is the same as the internal structure cavity shape of the adjustment frame. It is inserted into the adjustment frame and can move telescopically in the adjustment frame;

[0016] Fixing plates are further provided around the connecting seat. The inner size of the fixing plate is the same as the outer size of the adjustment frame. That is, when connecting, the adjustment frame is placed between the connecting seat of the adjustment pad and the fixing plate.

[0017] Further, the adjustment gasket is a thin gasket, and the top surface area thereof is the same as the cross-section of the connecting seat of the adjustment pad. The height of the top surface of the adjustment pad is adjusted by adjusting the number of the adjustment gaskets.

[0018] Furthermore, a spherical groove is provided at the bottom of the lower support plate, a spherical wear-resistant plate is fixed in the groove by bolts, and an annular groove is also opened at the top of the spherical groove along the edge of the groove, and a spherical sealing ring is embedded in the annular groove.

[0019] Furthermore, a spherical stainless steel plate is fixed to the bottom of the spherical crown lining plate by welding, and a spherical friction pair is formed between the spherical stainless steel plate and the spherical wear-resistant plate;

[0020] A circular groove is formed on the top of the spherical cap lining plate, a flat wear-resistant plate is fixed to the circular groove by bolts, and an annular groove is formed concentrically with the outer ring of the circular groove, and a flat sealing ring is embedded in the annular groove.

[0021] Furthermore, a flat stainless steel plate is welded to the bottom surface of the upper support plate, and a sliding friction pair is formed between the flat stainless steel plate and the flat wear-resistant plate;

[0022] A dustproof plate is also provided around the upper support plate. The dustproof plate is arranged along the edge of the upper support plate, and its lower edge extends downward to the bottom surface of the lower support plate, enclosing the internal structure of the support therein.

[0023] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0024] 1. The utility model discloses a universal bridge bearing for replacing old bridges. By adding steel pads of different heights at the bottom of the bearing, the height of the original bearing is lowered so that the overall height of the bearing can match the original bearings of different heights. The bearing can be replaced without additional construction on the bridge. At the same time, the versatility of the bearing is improved so that it can meet all height requirements for the replacement of existing bridge bearings.

[0025] 2. The utility model is a universal bridge bearing used for replacing old bridges. Sealing rings are provided on the peripheries of the two friction pairs to isolate the friction pairs from the outside air, preventing water and corrosive substances in the outside air from entering therein, causing corrosion to the stainless steel plate and affecting the rotation performance of the bearing.

[0026] 3. The utility model is a universal bridge bearing used for replacing old bridges, in which a force transmission plate made of flexible material is arranged between the adapter assembly and the upper and lower bearing plates to ensure a tight fit, prevent the bearing from becoming empty or overloaded when it is rotated secretly, which affects the force on the bearing and thus the working state of the bearing, thereby ensuring the reliability of the adapter assembly.

[0027] 4. A general bridge bearing for replacing old bridges according to the present utility model, the lower edge of the dust-proof plate extends downward to the bottom surface of the lower bearing plate, surrounding the internal structure of the bearing therein, preventing sundries including sand and stones and wooden sticks from entering when the bearing operates in a harsh environment, causing jamming or even damage to its internal structure, and extending the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. is a schematic structural diagram of a general bridge bearing for replacing old bridges according to an embodiment of the present utility model;

[0029] Figure 2 FIG. is a schematic structural diagram of a general bridge bearing for replacing old bridges according to an embodiment of the present utility model except for the rigid cushion block;

[0030] Figure 3 FIG. is a schematic structural diagram of the rigid cushion block of a general bridge bearing for replacing old bridges according to an embodiment of the present utility model;

[0031] Figure 4 FIG. is a half-sectional view of the rigid cushion block structure of a general bridge bearing for replacing old bridges according to an embodiment of the present utility model;

[0032] Figure 5 FIG. is a schematic structural diagram of Embodiment 2 of the present utility model except for the rigid cushion block;

[0033] Figure 6 FIG. is a schematic structural diagram of Embodiment 3 of the present utility model except for the rigid cushion block.

[0034] In all the drawings, the same reference numerals represent the same technical features, specifically: 1 - lower bearing plate, 2 - spherical wear-resistant plate, 3 - spherical sealing ring, 4 - spherical crown liner, 5 - spherical stainless steel plate, 6 - planar wear-resistant plate, 7 - planar sealing ring, 8 - upper bearing plate, 9 - planar stainless steel plate, 10 - dust-proof plate, 11 - guiding wear-resistant strip, 12 - guiding steel strip, 13 - lower adapter plate, 14 - upper adapter plate, 15 - load transfer plate, 16 - rigid cushion block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment 1

[0037] As Figure 1As shown in the figure, an embodiment of the utility model provides a general bridge bearing for replacing an old bridge, which includes a lower bearing plate 1, a spherical crown liner 4, an upper bearing plate 8 and a rigid cushion block 16. A rotational friction pair is provided between the lower bearing plate 1 and the spherical crown liner 4, a sliding friction pair is provided between the spherical crown liner 4 and the upper bearing plate 8, and the rigid cushion block 16 is arranged between the bearing and the bridge pier. By adding rigid cushion blocks 16 with different heights at the bottom of the bearing, the height of the original bearing is reduced, so that the overall height of the bearing can match the original bearings with different heights, realizing the replacement of the bearing without applying additional construction to the bridge. At the same time, the versatility of the bearing is improved, so that it can meet all height requirements for replacing existing bridge bearings.

[0038] As Figure 2 shown in the figure, the lower bearing plate 1 is a square stepped frustum structure, its bottom is a plane, and a spherical groove is provided downward at the top. There is also a depression provided downward along the spherical surface in the spherical groove. A spherical wear-resistant plate 2 is fixed in the depression by bolts, and an annular groove is also opened along the groove edge at the top of the spherical groove. A spherical sealing ring 3 is embedded in the annular groove. The bottom surface of the spherical crown liner 4 is spherical, and its curvature is the same as that of the spherical groove of the lower bearing plate 1. The top surface is a circular plane. A spherical stainless steel plate 5 is fixed to the bottom of the spherical crown liner 4 by welding. A spherical friction pair is formed between the spherical stainless steel plate 5 and the spherical wear-resistant plate 2. When the bearing is subjected to uneven longitudinal forces, it rotates to eliminate its acting force on the bridge pier and protect the normal operation of the bridge pier. The bottom edge of the spherical crown liner 4 is also tightly connected to the top surface of the spherical sealing ring 3, so as to block the spherical friction pair from the outside air, prevent water and corrosive substances in the outside air from entering it, corrode the spherical stainless steel plate 5, and affect the rotational performance of the bearing.

[0039] A circular groove is opened at the top of the spherical crown liner 4. A flat wear-resistant plate 6 is fixed in the circular groove by bolts, and an annular groove concentric with its outer circle is also opened in the circular groove. A flat sealing ring 7 is embedded in the annular groove. The top of the upper bearing plate 8 is a square plate, and a flat stainless steel plate 9 is welded to its bottom surface. A sliding friction pair is formed between the flat stainless steel plate 9 and the flat wear-resistant plate 6. When the bridge is subjected to a horizontal acting force, the bridge generates a horizontal displacement through this sliding friction pair to eliminate its horizontal acting force on the bridge pier. The bottom surface of the flat stainless steel plate 9 is also in close contact with the top surface of the flat sealing ring 7, so as to block the sliding friction pair from the outside air, prevent water and corrosive substances in the outside air from entering it, corrode the flat stainless steel plate 9, and affect the sliding performance of the bearing.

[0040] Around the top square plate of the upper bearing plate 8, there is a downwardly extending lower edge plate, and the bottom of the lower edge plate exceeds the edge and the top surface of the lower bearing plate 1. On the top of both sides of the lower bearing plate 1, there are guide wear-resistant strips 11 fixed by bolts. At the corresponding positions of the lower edge plates on both sides of the upper bearing plate 8 and the guide wear-resistant strips 11, there are also guide steel bars 12, which provide a guiding function for the upper bearing plate 8 when the bridge undergoes horizontal displacement, enabling the bearing to move along the set direction.

[0041] Around the upper bearing plate 8, there is also a dust-proof plate 10, which is arranged along the edge of the upper bearing plate 8 and is fixed to its outside by bolts, and the lower edge of the dust-proof plate 10 extends downward to the bottom surface of the lower bearing plate 1. The dust-proof plate 10 encloses the internal structure of the bearing, preventing sundries including sand and gravel and wooden sticks from entering when the bearing operates in a harsh environment, causing jamming or even damage to its internal structure, and extending the service life of the bearing.

[0042] As Figure 3 , 4 shown, the rigid cushion block 16 is a stepped frustum, both its bottom and top structures are square, and there are multiple anchor holes at its bottom, so that when facing different bridges, the original anchor steel bars on the bridge pier can be directly utilized without any form of construction on the bridge structure. Its top is set in multiple height specifications to be applicable to the heights of various original bearings, improving the versatility of the bearing. And its upper structure is fixedly connected to the bearing by bolts.

[0043] Preferably, the upper structure of the rigid cushion block 16 includes an adjustment frame, adjustment gaskets, and adjustment pads. Among them, the adjustment pad and the bottom of the rigid cushion block 16 are combined into a box body with an open top, and there is a vertical groove along the height direction in the middle of one side. The top of the adjustment pad is a square block, which is fixedly connected to the bottom structure of the bearing by bolts. There is a connecting seat at the bottom of the square block of the adjustment pad, and the cross-section of the connecting seat is the same as the shape of the internal structure cavity of the adjustment frame. It is inserted into the adjustment frame and can move telescopically in the adjustment frame. There are also fixing plates around the connecting seat, and the inner size of the fixing plates is the same as the outer size of the adjustment frame. That is, when connecting, the adjustment frame is placed between the connecting seat and the fixing plates of the adjustment pad to prevent the adjustment pad from shaking in the adjustment frame. The adjustment gasket is a thin gasket, and the top surface area of the adjustment gasket is the same as the cross-section of the connecting seat of the adjustment pad. By adjusting the number of adjustment gaskets, the height of the top surface of the adjustment pad is adjusted to make the bearing meet the height dimension of the original bridge bearing, and the replacement of the damaged bridge bearing is completed.

[0044] The support of the embodiment of the present utility model further includes an adapter assembly and a force transfer plate 15, which are used to provide a medium for the connection between the support and the bridge or pier. The adapter assembly is a lower adapter plate 13, which is fixedly connected to the lower support plate 1 through connecting bolts. The force transfer plate 15 is arranged between the lower adapter plate 13 and the lower support plate 1. The force transfer plate 15 is made of a flexible material, which is used to ensure that the lower adapter plate 13 and the lower support plate 1 are closely attached, prevent the occurrence of voids or uneven loading during the installation of the support, affect the force-bearing of the support, and thus affect the working state of the support, and ensure the reliability of the adapter assembly. The adapter assembly can ensure the bearing capacity of the structure and facilitate the disassembly and installation of the support.

[0045] Its installation method is as follows: After the support is integrally connected and fastened in the factory, it is transported to the site for installation. After arriving at the site, the adapter assembly is completely loosened from other components of the support. After the adapter assembly is connected and fastened to the embedded screw at the bottom of the beam / top of the pier, the whole support is pushed into the installation position, and then the position of the support is finely adjusted. After the adapter plate is bolted and connected to the support, the installation of the support is completed.

[0046] Embodiment 2

[0047] As Figure 5 shown, the adapter assembly of the embodiment of the present utility model is an upper adapter plate 14, which is fixedly connected to the upper support plate 8 through connecting bolts. The force transfer plate 15 is arranged between the upper adapter plate 14 and the upper support plate 8.

[0048] Embodiment 3

[0049] As Figure 6 shown, the adapter assembly of the embodiment of the present utility model is a lower adapter plate 13 and an upper adapter plate 14. The lower adapter plate 13 is fixedly connected to the lower support plate 1 through connecting bolts, and the upper adapter plate 14 is fixedly connected to the upper support plate 8 through connecting bolts. The force transfer plate 15 is arranged between the lower adapter plate 13 and the lower support plate 1, and the force transfer plate 15 is also arranged between the upper adapter plate 14 and the upper support plate 8.

[0050] Those skilled in the art can easily understand that the above description is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A general bridge bearing for old bridge replacement, characterized in that, include: A lower support plate (1), a spherical crown lining plate (4), an upper support plate (8), a steel pad (16) and a transition assembly; A rotating friction pair is provided between the lower support plate (1) and the spherical crown lining plate (4), and a sliding friction pair is provided between the spherical crown lining plate (4) and the upper support plate (8); The adapter assembly comprises a lower adapter plate (13) arranged at the bottom of the lower support plate (1) and / or an upper adapter plate (14) arranged at the top of the upper support plate (8); The steel pad (16) is arranged between the support and the bridge pier, and a plurality of anchor holes are opened at the bottom thereof, so that when facing different bridges, the original anchor steel rod on the bridge pier can be directly used, and the top is set to a variety of height specifications, thereby improving the versatility of the support and making it suitable for a variety of original support heights.

2. The general bridge bearing for old bridge replacement according to claim 1, wherein, Also includes a force transmission plate (15); The force transmission plate (15) is arranged between the lower adapter plate (13) and the lower support plate (1) and / or between the upper adapter plate (14) and the upper support plate (8).

3. The general bridge bearing for old bridge replacement according to claim 2, characterized in that, The force transmission plate (15) is made of a flexible material and is used to ensure that the lower adapter plate (13) is tightly fitted to the lower support plate (1).

4. A general bridge bearing for replacing old bridges according to any one of claims 1-3, characterized in that, The upper structure of the rigid pad (16) comprises an adjustment frame, an adjustment pad and an adjustment pad.

5. The general bridge bearing for old bridge replacement according to claim 4, characterized in that, The adjusting pad and the bottom of the rigid pad (16) are combined into a box body with an open top surface, and a vertical groove is opened in the middle of one side surface along the height direction.

6. The general bridge bearing for old bridge replacement according to claim 5, characterized in that, The top of the adjusting pad is a square block, which is fixedly connected to the bottom structure of the support by bolts. The bottom of the square block of the adjusting pad is provided with a connecting seat, and the cross section of the connecting seat is the same as the shape of the internal structure cavity of the adjusting frame. The connecting seat is inserted into the adjusting frame and telescopically moves in the adjusting frame; A fixing plate is also arranged around the connecting seat, and the inner dimension of the fixing plate is the same as the outer dimension of the adjusting frame, that is, when connected, the adjusting frame is placed around the adjusting pad connecting seat and the fixing plate.

7. A general bridge bearing for old bridge replacement according to claim 6, characterized in that, The adjusting gasket is a thin gasket, the top surface area of which is the same as the cross section of the connecting seat of the adjusting pad block, and the height of the top surface of the adjusting pad block can be adjusted by adjusting the number of the adjusting gaskets.

8. A general bridge bearing for old bridge replacement according to any one of claims 1-3, characterized in that, The bottom of the lower support plate (1) is provided with a spherical groove, in which a spherical wear-resistant plate (2) is fixed by bolts, and the top of the spherical groove is also provided with an annular groove along the edge of the groove, in which a spherical sealing ring (3) is embedded.

9. The general bridge bearing for old bridge replacement according to claim 8, characterized in that, A spherical stainless steel plate (5) is fixed to the bottom of the spherical crown lining plate (4) by welding, and a spherical friction pair is formed between the spherical stainless steel plate (5) and the spherical wear-resistant plate (2); The top of the spherical cap lining (4) is provided with a circular groove, a flat wear-resistant plate (6) is fixed to the circular groove by bolts, and an annular groove is provided concentrically with the outer ring of the circular groove, and a flat sealing ring (7) is embedded in the annular groove.

10. The general bridge bearing for old bridge replacement according to claim 9, characterized in that, A flat stainless steel plate (9) is welded to the bottom surface of the upper support plate (8), and a sliding friction pair is formed between the flat stainless steel plate (9) and the flat wear-resistant plate (6); A dust-proof plate (10) is further provided around the upper bearing plate (8). The dust-proof plate (10) is arranged along the edge of the upper bearing plate (8), and its lower edge extends downward to the bottom surface of the lower bearing plate (1), surrounding the internal structure of the bearing therein.

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