Seismic reduction and isolation spherical support based on heating-free alloy height adjustment
The non-heating alloy-based height adjustment mechanism for reduce-isolation ball-type bearings addresses the imprecision of heating methods by enabling precise and continuous height adjustment, ensuring stability and energy dissipation during seismic events.
Patent Information
- Application Number
- CN202422371890.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing high-reduction and isolation ball bearings mainly rely on padding or pulling up the height-resizing pad, which leads to inaccurate height adjustment and sealing problems.
The heating-free alloy height adjustment technology is adopted to press the low-melting point alloy into the filling cavity through the runner hole, and the plasticity of the alloy is used to achieve stepless height adjustment, and the alloy is prevented by sealing devices, combining the diversion groove and friction pair to consume seismic energy.
It achieves precise adjustment of the bearing height and high safety, which can effectively protect the piers during earthquakes and reduce structural damage.
Smart Images
Figure CN223103461U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seismic isolation spherical bearings, and particularly relates to a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment. Background Technique
[0002] The seismic isolation and vibration reduction spherical bearing is a kind of seismic isolation bearing, which can change the natural vibration period of the upper structure during an earthquake and reduce the damage of the earthquake to the bridge structure through the friction energy dissipation of the friction pair. The seismic isolation and vibration reduction spherical bearing includes two types of bearings: those with a planar sliding surface and those without a planar sliding surface. Under normal use conditions, the seismic isolation and vibration reduction spherical bearing is in the same use state as the ordinary spherical bearing. During an earthquake, when the horizontal bearing capacity is greater than the seismic shear force of the limit stop block, the shear pin is cut off, and the seismic isolation and vibration reduction spherical bearing enters the swinging working state and begins to play the role of seismic isolation. At present, the most commonly used height adjustment scheme for the seismic isolation and vibration reduction spherical bearing is to adjust the height by adding or extracting height adjustment pads. However, the pads have a certain thickness and can only be adjusted in fixed levels, resulting in inaccurate height adjustment of the seismic isolation and vibration reduction spherical bearing. Therefore, it is urgent to design a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment to solve the above problems. Content of the Utility Model
[0003] The purpose of the utility model is to provide a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment to solve the above deficiencies in the prior art.
[0004] To achieve the above purpose, the utility model provides the following technical solutions:
[0005] A seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment includes a lower support plate. An upper support plate is arranged on the top of the lower support plate. A middle support plate is arranged between the upper support plate and the lower support plate. A filling cavity adapted to the middle support plate is arranged at the bottom of the upper support plate. The top of the middle support plate is located inside the filling cavity. A sealing device is fixed on the top side wall of the middle support plate. Uniformly distributed flow guiding grooves are formed on the outer wall of the top of the middle support plate. A flow passage hole communicating with the filling cavity is arranged inside the middle support plate.
[0006] Further, a flow passage interface communicating with the flow passage hole is formed on the outer wall of one side of the middle support plate. A spherical crown liner is arranged between the middle support plate and the lower support plate.
[0007] Further, an upper concave cavity adapted to the spherical crown liner is arranged on the outer wall of the bottom of the middle support plate. A lower concave cavity adapted to the spherical crown liner is arranged on the outer wall of the top of the lower support plate.
[0008] Further, a limit frame is connected to the top of the lower support plate through a shear bolt. The bottom of the middle support plate is located inside the limit frame.
[0009] Further, a connecting sleeve is welded to the outer wall of the top of the upper bearing plate, and an anchor bolt is inserted into the connecting sleeve.
[0010] Further, a sliding groove is formed in the outer wall of the bottom of the upper bearing plate, a sliding seat plate is slidably connected inside the sliding groove, and the filling cavity is located on the outer wall of the bottom of the sliding seat plate.
[0011] Further, a transverse friction plate is fixed to the outer wall of the top of the sliding seat plate, a transverse stainless steel plate is fixed to the inner wall of the top of the sliding groove, a vertical friction plate is fixed to the side wall of the sliding seat plate, and a vertical stainless steel plate is fixed to the side wall of the sliding groove.
[0012] In the above technical solution, a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment provided by the present utility model has the beneficial effects that: by pressing the low-melting-point alloy into the filling cavity of the bearing through the flow passage holes, the effect of stepless height adjustment of the bearing can be realized, making the height adjustment of the bearing more accurate, and the metal sealing device can effectively prevent the low-melting-point alloy from being extruded from the gap between the upper bearing plate and the middle bearing plate, and the low-melting-point alloy is pressed into the filling cavity more evenly through the diversion groove; when the horizontal vibration generated by the earthquake is relatively large, the sliding between the upper bearing plate and the sliding seat plate reaches the limit, causing the shear bolt to break due to excessive force. At this time, the middle bearing plate is not restricted by the limiting frame, thus achieving the effect of protecting the bridge pier. Description of the Drawings
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.
[0014] Figure 1 It is a front view structural schematic diagram provided by an embodiment of a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment of the present utility model.
[0015] Figure 2 It is a side view structural schematic diagram provided by an embodiment of a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment of the present utility model.
[0016] Figure 3 It is an enlarged structural schematic diagram at A provided by an embodiment of a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment of the present utility model.
[0017] Figure 4 It is a structural schematic diagram of a sliding seat plate provided by an embodiment of a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment of the present utility model.
[0018] Figure 5Schematic diagram of the chute structure provided for an embodiment of a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment of the present utility model.
[0019] Figure 6 Schematic diagram of the enlarged structure at position B provided for an embodiment of a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment of the present utility model.
[0020] Description of reference numerals:
[0021] 1 Lower support plate, 2 Upper support plate, 3 Filling cavity, 4 Middle support plate, 5 Lower concave cavity, 6 Spherical crown liner, 7 Upper concave cavity, 8 Shearing bolt, 9 Flow channel hole, 10 Sealing device, 11 Sliding seat plate, 12 Chute, 13 Vertical friction plate, 14 Vertical stainless steel plate, 15 Horizontal stainless steel plate, 16 Horizontal friction plate, 17 Diversion groove, 18 Flow channel interface, 19 Connecting sleeve, 20 Anchor bolt, 21 Limit frame. Detailed implementation manners
[0022] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.
[0023] Embodiment 1
[0024] As Figures 1-3As shown in the figure, a seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment provided by an embodiment of the present utility model includes a lower bearing plate 1, the lower bearing plate 1 is fixed to the bridge pier, an upper bearing plate 2 is arranged on the top of the lower bearing plate 1, the upper bearing plate 2 is fixed to the bridge, a middle bearing plate 4 is arranged between the upper bearing plate 2 and the lower bearing plate 1, a filling cavity 3 adapted to the middle bearing plate 4 is arranged at the bottom of the upper bearing plate 2, low melting point alloy can be pressed into the filling cavity 3, the top of the middle bearing plate 4 is located inside the filling cavity 3, the periphery of the middle bearing plate 4 is in contact with the inner wall of the filling cavity 3, a sealing device 10 is fixed to the top side wall of the middle bearing plate 4, the sealing device 10 is an annular metal O-ring, which prevents the low melting point alloy from being extruded from the gap between the upper bearing plate 2 and the middle bearing plate 4, a uniformly distributed flow guiding groove 17 is formed on the outer wall of the top of the middle bearing plate 4, so that the low melting point alloy can be more evenly pressed into the filling cavity 3 through the flow guiding groove 17, a flow passage hole 9 communicating with the filling cavity 3 is arranged inside the middle bearing plate 4, the low melting point alloy enters the filling cavity 3 from the flow passage hole 9, because the pressed low melting point alloy is solid, the solid low melting point alloy has a soft property, and the characteristic that the alloy is easy to deform under high pressure is utilized. During the height adjustment process, it is not necessary to heat the alloy and the bearing, and an alloy pressing device is used to slowly press the alloy, and the alloy will be slowly extruded into the filling cavity 3; in the prior art, there is also a method of adjusting the height of the bearing by heating the alloy, but it is necessary to heat the pipeline, the heating device and the bearing, and the sealing requirement is relatively high; the present application adopts a non-heating method, does not need to heat the alloy and the bearing, there is no heating device, there will be no leakage, and the safety is high; a flow passage interface 18 communicating with the flow passage hole 9 is arranged on the outer wall of one side of the middle bearing plate 4, the flow passage interface 18 is used to connect the pipeline for pressing the low melting point alloy, after the low melting point alloy is pressed into the filling cavity 3, a plug needs to be used to block the flow passage interface 18 to keep the height of the bearing fixed. When it is necessary to lower the height of the bearing, the plug at the flow passage interface 18 is opened, and by using the self-weight of the bridge, the alloy can be slowly extruded out, so as to reduce the low melting point alloy in the filling cavity 3, and further achieve the effect of reducing the height of the bearing; a spherical crown liner 6 is arranged between the middle bearing plate 4 and the lower bearing plate 1, the upper and lower surfaces of the spherical crown liner 6 are both curved surfaces and are provided with friction plates; an upper concave cavity 7 adapted to the spherical crown liner 6 is arranged on the outer wall of the bottom of the middle bearing plate 4, the inner wall of the upper concave cavity 7 is provided with a stainless steel plate with a curved surface, a lower concave cavity 5 adapted to the spherical crown liner 6 is arranged on the outer wall of the top of the lower bearing plate 1, and the inner wall of the lower concave cavity 5 is also provided with a stainless steel plate with a curved surface. A sliding pair is formed by the stainless steel plate and the friction plate, so that the sliding between the spherical crown liner 6 and the middle bearing plate 4 and the lower bearing plate 1 is more stable, and the energy of the earthquake acting on the bridge can be consumed through friction; a limit frame 21 is connected to the top of the lower bearing plate 1 through a shear bolt 8, when the horizontal force on the limit frame 21 is overloaded, the shear bolt 8 can break, the bottom of the middle bearing plate 4 is located inside the limit frame 21, and the limit frame 21 plays a role in limiting the middle bearing plate 4;A connecting sleeve 19 is welded to the outer wall of the top of the upper bearing plate 2. An anchor bolt 20 is inserted into the inside of the connecting sleeve 19. At the same time, the lower bearing plate 1 also has the anchor bolt 20, so that the lower bearing plate 1 is fixed to the bridge pier, and the upper bearing plate 2 is fixed to the bridge. When the horizontal vibration generated by the earthquake is large, the shear bolt 8 breaks due to excessive force. At this time, the middle bearing plate 4 is not restricted by the limit frame 21, so that the lower bearing plate 1 and the upper bearing plate 2 can slide, thereby entering the seismic isolation and energy dissipation working condition, changing the period of the bridge structure, and reducing the damage of the beam body to the bridge pier.
[0025] Embodiment 2
[0026] As Figures 3-6 shown, a seismic isolation and energy dissipation spherical bearing based on non-heating alloy height adjustment provided by an embodiment of the present invention. The difference between this embodiment and Embodiment 1 is that a sliding groove 12 is opened on the outer wall of the bottom of the upper bearing plate 2. A sliding seat plate 11 is slidably connected to the inside of the sliding groove 12. The width of the sliding groove 12 is adapted to the sliding seat plate 11, and the sliding seat plate 11 can slide within the length range of the sliding groove 12. The filling cavity 3 is located on the outer wall of the bottom of the sliding seat plate 11. By sliding the sliding seat plate 11 inside the sliding groove 12 of the upper bearing plate 2, the displacement generated by the beam body due to temperature change can be adapted; a horizontal friction plate 16 is fixed to the outer wall of the top of the sliding seat plate 11, a horizontal stainless steel plate 15 is fixed to the inner wall of the top of the sliding groove 12, a vertical friction plate 13 is fixed to the side wall of the sliding seat plate 11, and a vertical stainless steel plate 14 is fixed to the side wall of the sliding groove 12. By forming a sliding pair with the stainless steel plate and the friction plate, the sliding of the sliding seat plate 11 and the sliding groove 12 is smoother, and the frictional force provided by the friction plate can consume the energy of the seismic action.
[0027] Working principle: During use, the low-melting-point alloy is pressed into the filling cavity 3 from the runner interface 18 through pressure, so that the filling cavity 3 is filled with the low-melting-point alloy. As the low-melting-point alloy continuously enters the inside of the filling cavity 3, the effect of raising the upper bearing plate 2 is realized. Then, the runner interface 18 is blocked by a plug, and the height of the upper bearing plate 2 can be fixed. The whole process can realize the effect of stepless height adjustment of the bearing, making the bearing more accurate during height adjustment.
[0028] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.
Claims
1. A seismic isolation spherical bearing based on height adjustment with a non-heating alloy, characterized in that, It includes a lower support plate (1), an upper support plate (2) is arranged on the top of the lower support plate (1), a middle support plate (4) is arranged between the upper support plate (2) and the lower support plate (1), a filling cavity (3) adapted to the middle support plate (4) is arranged at the bottom of the upper support plate (2), the top of the middle support plate (4) is located inside the filling cavity (3), a sealing device (10) is fixed on the top side wall of the middle support plate (4), uniformly distributed flow guiding grooves (17) are formed on the outer wall of the top of the middle support plate (4), and a flow passage hole (9) communicating with the filling cavity (3) is arranged inside the middle support plate (4).
2. The seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment according to claim 1, characterized in that, A flow passage interface (18) communicating with the flow passage hole (9) is formed on the outer wall of one side of the middle support plate (4), and a spherical crown liner (6) is arranged between the middle support plate (4) and the lower support plate (1).
3. The seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment according to claim 2, characterized in that, An upper concave cavity (7) adapted to the spherical crown liner (6) is arranged on the outer wall of the bottom of the middle support plate (4), and a lower concave cavity (5) adapted to the spherical crown liner (6) is arranged on the outer wall of the top of the lower support plate (1).
4. The isolation and seismic reduction spherical bearing based on non-heating alloy height adjustment according to claim 1, characterized in that, The top of the lower support plate (1) is connected with a limiting frame (21) through a shear bolt (8), and the bottom of the middle support plate (4) is located inside the limiting frame (21).
5. The seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment according to claim 1, characterized in that, A connecting sleeve (19) is welded on the outer wall of the top of the upper support plate (2), and an anchor bolt (20) is inserted into the connecting sleeve (19).
6. The seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment according to claim 1, wherein A sliding groove (12) is formed on the outer wall of the bottom of the upper support plate (2), a sliding seat plate (11) is slidably connected inside the sliding groove (12), and the filling cavity (3) is located on the outer wall of the bottom of the sliding seat plate (11).
7. The seismic isolation and vibration reduction spherical bearing based on non-heating alloy height adjustment according to claim 6, characterized in that, A transverse friction plate (16) is fixed on the outer wall of the top of the sliding seat plate (11), a transverse stainless steel plate (15) is fixed on the inner wall of the top of the sliding groove (12), a vertical friction plate (13) is fixed on the side wall of the sliding seat plate (11), and a vertical stainless steel plate (14) is fixed on the side wall of the sliding groove (12).