Maintenance-free self-resetting seismic mitigation and isolation ball steel support

Abstract

The invention discloses a maintenance-free self-resetting seismic mitigation and isolation ball steel support and relates to the technical field of bridge construction.The maintenance-free self-resetting seismic mitigation and isolation ball steel support comprises an upper support plate, a lower support plate, a spherical crown lining plate, a sliding concave plate, a lubricating assembly and a seismic mitigation assembly, the sliding concave plate is slidably connected into a clamping groove of the lower support plate, and the lubricating assembly is arranged between the sliding concave plate and the lower support plate; a damping assembly is arranged between the periphery of the sliding concave plate and the groove wall of the lower support plate, a spherical crown lining plate is arranged in the clamping groove of the upper support plate in a sliding mode, the lower surface of the spherical crown lining plate is a spherical surface and is matched with the concave spherical surface of the upper surface of the sliding concave plate, and the clamping groove of the upper support plate is located in the clamping groove of the lower support plate. One end of the sliding concave plate abuts against the clamping groove of the upper support plate. The lubricating assembly can keep the sliding plate assembly in a long-acting lubricating state in the moving process, the damping assembly can reset the support to the normal position, the repairability of a beam body after an earthquake is improved, and the safety performance, the damping performance, the self-resetting buffering performance and the durability of the spherical support are all improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a maintenance-free self-resetting shock-absorbing and isolating spherical steel bearing. Background Art

[0002] Spherical bearings are currently widely used in various types of bridge construction due to their large load-bearing capacity and flexible rotation. Their function is to transfer loads and adapt to displacement angles. As the joints and key components of the entire bridge, the safety performance, shock absorption performance, self-reset buffering performance and durability of the bridge bearings are directly related to the operational safety of the bridge. However, in the actual operation of spherical bearings, there are problems such as continuous wear or failure of silicone grease, which leads to excessive wear or damage of the pressure slide plate and metal locking; there is no buffering or self-reset function during the displacement movement of the bearing, which makes it impossible to restore the center position after the displacement, resulting in premature limit of the bearing and damage; the side guide is loosened, broken, and falls off due to displacement impact, which ultimately leads to damage to the bearing structure and serious reduction in life.

[0003] With the increasing complexity of bridge movements and the increasing demand for earthquake resistance and long life in modern society, the existing common spherical bearings have a single function and can no longer meet the needs of modern bridge construction. Therefore, higher requirements are placed on bridge bearings, and it is urgent to develop a maintenance-free self-resetting seismic isolation spherical steel bearing to maintain the safety of cable bridges. Summary of the invention

[0004] The purpose of the present invention is to provide a maintenance-free self-resetting shock-isolating spherical steel bearing to solve the problems existing in the above-mentioned prior art, so that the safety performance, shock absorption performance, self-resetting buffering performance and durability of the spherical bearing are improved.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a maintenance-free self-resetting shock-absorbing and isolating ball steel bearing, comprising an upper bearing plate, a lower bearing plate, a spherical crown lining plate, a sliding concave plate, a lubricating assembly and a shock-absorbing assembly, wherein the sliding concave plate is slidably connected in a groove of the lower bearing plate, the lubricating assembly is arranged between the sliding concave plate and the lower bearing plate, the shock-absorbing assembly is arranged between the outer periphery of the sliding concave plate and the groove wall of the lower bearing plate, the spherical crown lining plate is slidably arranged in the groove of the upper bearing plate, the lower surface of the spherical crown lining plate is spherical and matches the concave spherical surface on the upper surface of the sliding concave plate, the groove of the upper bearing plate is located in the projection surface of the groove of the lower bearing plate, one end of the sliding concave plate is in conflict with the groove of the upper bearing plate, and the other end is not in contact with the groove of the upper bearing plate, the lubricating assembly can automatically replenish lubricant, and the shock-absorbing assembly can provide a reset force for the relative displacement of the upper bearing plate and the lower bearing plate.

[0007] Preferably, the upper surface of the spherical crown lining is a plane and the lower surface is a spherical surface. The concave spherical surface is arranged in the middle of the upper surface of the sliding concave plate and the lower surface is a plane. The upper and lower surfaces of the spherical crown lining are both embedded with sliding plates of matching shapes, and the material of the sliding plates is modified ultra-high molecular weight polyethylene.

[0008] Preferably, the surfaces of the upper support plate and the lower support plate located in the slot are welded with stainless steel plates, and the thickness of the stainless steel plates is 2 mm-3 mm.

[0009] Preferably, the lubrication assembly includes a plurality of grease storage grooves equidistantly arranged on the lower plane of the sliding concave plate, the grease storage grooves are stepped grooves, the large ends of the stepped grooves are located on the outside and are clamped with a sealing gasket, and the small ends are located on the inside and contain silicone grease, and the lower surface of the sliding concave plate is embedded with a slide plate made of modified ultra-high molecular weight polyethylene material with a matching shape, and corresponding oil holes are provided on the sealing gasket and the slide plate.

[0010] Preferably, the shock absorbing assembly includes a baffle, a guide plate, a screw and a spring. A plurality of guide plates and screws are arranged at equal intervals on one side of the baffle. The guide plates and screws are arranged at intervals. The other end of the screw can move through the slot wall of the lower support plate and is connected through a limiting lock nut. A gap is arranged between the other end of the guide plate and the inner wall of the slot of the lower support plate, and a plurality of springs are passed through the screw.

[0011] Preferably, the abutting surface of the baffle is welded with a stainless steel mirror plate, and the bottom surface is welded with a copper-based sliding strip; the guide plate is L-shaped, and the front end of the guide plate can be inserted into the square hole on the slot and the rear end is stuck on one side of the square hole; the spring includes a steel spring and a rubber spring.

[0012] Preferably, one end of a lateral stopper is connected to the slot on at least one side of the lower support plate via a shear bolt, and the other end of the lateral stopper is movably connected to the slot of the upper support plate.

[0013] Preferably, the lateral stop block includes a limit stop block, a concave ball block, a convex ball block and an elastic block, and a groove is provided at one end of the lateral stop block connected to the upper support plate, and the elastic block, the concave ball block and the convex ball block are sequentially arranged in the groove from the inside to the outside, and a spherical groove is provided at the outer end of the concave ball block, a spherical surface is provided at one end of the convex ball block, and a plane is provided at the other end, and the spherical surface of the convex ball block is movably matched in the spherical groove, and the plane of the convex ball block conflicts with the groove wall of the card slot connected to the upper support plate.

[0014] Preferably, the spherical groove of the concave ball block and the plane of the convex ball block are both welded with stainless steel mirror panels, the spherical surface of the convex ball block is polished and chrome-plated, and the position where the groove wall connected to the upper support plate abuts the plane of the convex ball block is welded with a stainless steel mirror panel.

[0015] Preferably, the upper support plate and the lower support plate are both connected to the building components via anchor bolts, and sleeves are provided on the anchor bolts.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The lubrication component of the present invention can be automatically replenished, so that the skateboard can always maintain a long-term lubrication state during movement. The compression elastic force of the shock-absorbing component can reset the support to a normal position, greatly increasing the post-earthquake repairability of the beam body, and improving the safety performance, shock-absorbing performance, self-resetting buffering performance and durability of the spherical support. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The structure of the maintenance-free self-resetting vibration-isolating ball steel support in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure of the maintenance-free self-resetting vibration-isolating ball steel support in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 Schematic diagram of the lower surface structure of the sliding concave plate in an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the lateral stopper in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the working process of the lateral stopper in an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a lubrication assembly in an embodiment of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the shock absorbing assembly in an embodiment of the present invention;

[0026] Figure 8A schematic diagram of the structural connection relationship of the lower support in an embodiment of the present invention;

[0027] Fig. 9 It is a schematic diagram of the explosion structure of the maintenance-free self-resetting seismic isolation ball steel support in the embodiment of the present invention;

[0028] In the figure: 1-upper support plate, 2-slide plate, 3-spherical crown lining plate, 4-spherical surface, 5-sleeve, 6-anchor bolt, 7-lower support plate, 8-sealing gasket, 9-slot, 10-sealing ring, 11-limit stopper, 12-elastic block, 13-concave ball block, 14-convex ball block, 15-shear bolt, 16-sliding concave plate, 17-stainless steel plate, 18-silicon grease, 19-stainless steel mirror plate, 20-spring, 21-baffle, 22-guide plate, 23-screw, 24-copper-based slide bar. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a maintenance-free self-resetting shock-isolating spherical steel bearing to solve the problems existing in the prior art and to improve the safety performance, shock-absorbing performance, self-resetting buffering performance and durability of the spherical bearing.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 9As shown, in this embodiment, a maintenance-free self-resetting shock-isolating ball steel bearing is provided, including an upper bearing plate 1, a lower bearing plate 7, a ball crown lining plate 3, a sliding concave plate 16, a lubrication component and a shock-absorbing component. The sliding concave plate 16 is slidably connected in the slot 9 of the lower bearing plate 7, a lubrication component is arranged between the sliding concave plate 16 and the lower bearing plate 7, a shock-absorbing component is arranged between the outer periphery of the sliding concave plate 16 and the groove wall of the lower bearing plate 7, and a sliding concave plate 16 is arranged in the slot 9 of the upper bearing plate 1. A spherical crown lining plate 3 is provided, the lower surface of the spherical crown lining plate 3 is a spherical surface 4 and matches the concave spherical surface of the upper surface of the sliding concave plate 16, the slot 9 of the upper support plate 1 is located within the projection surface of the slot 9 of the lower support plate 7, one end of the sliding concave plate 16 is in conflict with the slot 9 of the upper support plate 1, and the other end is not in contact with the slot 9 of the upper support plate 1, the lubrication component can automatically replenish the lubricant, and the shock absorbing component can provide a reset force for the relative displacement of the upper support plate 1 and the lower support plate 7. The maintenance-free self-resetting shock-absorbing ball steel bearing in this embodiment can include unidirectional, bidirectional and fixed spherical bearings according to the number and direction of the lateral stoppers. In this embodiment, the unidirectional shock-absorbing spherical bearing is a structure without lateral stops in the active direction and lateral stops are arranged in the limiting direction; the bidirectional shock-absorbing spherical bearing is a structure without lateral stops in the four active directions; and the fixed shock-absorbing spherical bearing is a structure with lateral stops arranged in all four directions.

[0033] As an optional solution, in this embodiment, the upper surface of the spherical crown lining plate 3 is a plane, and the lower surface is a spherical surface 4. The middle part of the upper surface of the sliding concave plate 16 is provided with a concave spherical surface, and the lower surface is a plane. The upper and lower surfaces of the spherical crown lining plate 3 are both embedded with a sliding plate 2 of matching shape, and the material of the sliding plate 2 is modified ultra-high molecular weight polyethylene. In this embodiment, the friction pair in the horizontal direction is basically a sliding plate 2 with a stainless steel plate 17, which can effectively reduce friction. The plane sliding plate 2 has a displacement effect, and the spherical sliding plate 2 can adapt to the corner effect.

[0034] As an optional solution, in this embodiment, the surfaces of the upper support plate 1 and the lower support plate 7 located in the slot 9 are welded with a stainless steel plate 17, the thickness of the stainless steel plate 17 is 2mm-3mm, and the thickness of the copper-based slide bar 24 is also 2mm-3mm. In this embodiment, the upper support plate 1 is welded with a copper-based slide bar 24, and the stainless steel mirror plate 19 is welded in the slot 9 of the lower support plate 7. The friction pair in the vertical direction is basically the copper-based slide bar 24 and the stainless steel plate 17, which can reduce the friction between the two and make it slide better.

[0035] As an optional solution, the lubrication assembly in this embodiment includes a plurality of grease storage grooves arranged at equal intervals on the lower plane of the sliding concave plate 16. The grease storage grooves are stepped grooves, the large end of the stepped grooves is located on the outside and is clamped with a sealing gasket 8, and the small end is located on the inside and contains silicone grease 18. The lower surface of the sliding concave plate 16 is embedded with a slide plate 2 made of a modified ultra-high molecular weight polyethylene material with a matching shape, and the sealing gasket 8 and the slide plate 2 are provided with oil holes correspondingly, and a sealing ring 10 is arranged on the outer ring of the lower plane of the sliding concave plate 16. In this embodiment, the silicone grease 18 has extremely low volatile loss, does not dry, is not easy to melt, has good material adaptability and a wide range of operating temperature, is non-toxic, odorless, non-corrosive, and is a lubricant with stable chemical and physical properties. Compared with the conventional structure, in this embodiment, a grease storage groove is opened inside the middle steel plate matrix, and the grease storage grooves are arranged in two rows at equal intervals and in a cross shape. A closed space is formed with the lower surface of the sliding recessed plate 16 through the silicone grease 18 seal, and the lower surface of the sliding recessed plate 16 and the stainless steel plate 17 form a closed space. During the relative movement of the support plate, when the silicone grease 18 on the lower surface of the sliding recessed plate 16 is consumed, the silicone grease 18 in the grease storage hole will be automatically replenished through the small holes opened under the action of gravity and capillary principle, so that the skateboard 2 always maintains a long-term lubrication state during movement, which can increase the service life of the support.

[0036] As an optional solution, the shock absorbing assembly in this embodiment includes a baffle 21, a guide plate 22, a screw 23 and a spring 20. A plurality of guide plates 22 and screws 23 are evenly spaced on one side of the baffle 21. The guide plates 22 and the screws 23 are spaced apart. The other end of the screw 23 movably passes through the wall of the slot 9 of the lower support plate 7 and is connected through a limit lock nut. A gap of at least 1 cm is provided between the other end of the guide plate 22 and the inner wall of the slot 9 of the lower support plate 7. The gap can be determined according to actual needs. A plurality of springs 20 are provided on the screw 23 to facilitate the resetting and shock absorbing and buffering movement of the screw 23.

[0037] As an optional solution, the length of the screw 23 in this embodiment is at least 15 cm, and the length of the screw 23 can be determined according to the actual compression displacement. The abutting surface of the baffle 21 is welded with a stainless steel mirror plate 19, and the bottom surface is welded with a copper-based slide bar 24. The copper-based slide bar 24 cooperates with the stainless steel mirror plate 19 to reduce friction and reduce friction resistance. The guide plate 22 is L-shaped, and the front end (narrow) of the guide plate can be inserted into the square hole on the card slot 9, and the rear end is stuck on one side of the square hole, which can limit the maximum distance of the lateral displacement of the baffle 21, thereby protecting the spring 20 from being damaged. The spring 20 includes a steel spring and a rubber spring, and a disc spring can be selected in the steel spring.

[0038] As an optional solution, in this embodiment, one end of an L-shaped or strip-shaped lateral stopper is connected to the slot 9 on at least one side of the lower support plate 7 through a shear bolt 15, and the other end of the lateral stopper is movably connected to the slot 9 of the upper support plate 1.

[0039] As an optional solution, the lateral block in this embodiment includes a limit block 11, a concave ball block 13, a convex ball block 14 and an elastic block 12. A groove is provided at one end of the lateral block connected to the upper support plate 1. The elastic block 12, the concave ball block 13 and the convex ball block 14 are arranged in sequence from the inside to the outside of the groove. A spherical groove is provided at the outer end of the concave ball block 13. A spherical surface is provided at one end of the convex ball block 14 and a plane is provided at the other end. The spherical surface of the convex ball block 14 is movably matched in the spherical groove. The plane of the convex ball block 14 conflicts with the groove wall of the slot 9 connected to the upper support plate 1. When the lateral block in this embodiment is subjected to the action of an earthquake, the shear bolt 15 on the limit block 11 is sheared off, consuming energy once. After shearing off, the seismic displacement is released. The spring 20 is compressed for a second time to consume energy. When the spring 20 is compressed to the limit, the slot 9 of the lower support plate 7 participates in the displacement limitation to prevent the beam from falling. Figure 8 As shown, when the earthquake displacement or the spring 20 is compressed to the limit position, the lateral block can limit the displacement, lock the upper and lower positions of the support, and prevent the beam from falling. Compared with the conventional structure, the limit block 11 in this embodiment adopts a convex ball block 14 and a concave ball block 13, combined with a polyurethane elastomer, and replaces the traditional welding fixation by embedding fixation, which effectively reduces the problem of damage to the slide bar due to loose welding and deformation of the slide bar after welding; the convex ball block 14 cooperates with the concave ball block 13 so that the convex ball block 14 can rotate with the rotation angle of the support, and the polyurethane elastomer ensures that the convex ball block 14 can fit tightly with the upper plate of the support, and can adapt to the displacement angle deviation in the displacement direction, ensuring that the lateral force of the support is always surface force, greatly improving the life of the lateral sliding mechanism.

[0040] As an optional solution, in this embodiment, the spherical groove of the concave ball block 13 and the plane of the convex ball block 14 are welded with a stainless steel mirror plate 19, the spherical surface of the convex ball block 14 is polished and chrome-plated, and the position where the groove wall of the slot 9 connected to the upper support plate 1 abuts against the plane of the convex ball block 14 is welded with a stainless steel mirror plate 19. In this embodiment, the concave ball block 13 is welded with stainless steel to reduce the friction coefficient with the convex ball block 14 during the rotation process, and the convex ball block 14 is welded with a stainless steel mirror plate 19 on the plane to reduce the friction coefficient between the upper support plate 1 and the block during the movement; both are for better rotation of the support to prevent rigid locking due to excessive friction.

[0041] As an optional solution, in this embodiment, the upper support plate 1 and the lower support plate 7 are connected to the building components through anchor bolts 6, and sleeves 5 are passed through the anchor bolts 6. In this embodiment, the connection method of the upper support plate 1 and the lower support plate 7 depends on the structural characteristics of the anchored building. In addition to the sleeve 5 anchoring, welding, bolt connection, etc. can also be used.

[0042] In this embodiment, a shock-absorbing structure and a beam-fall prevention structure are additionally arranged between the upper and lower supports. Under the action of an earthquake, the shear bolts 15 on the limit stopper 11 are sheared off, consuming energy once. After shearing off, the earthquake displacement is released, and the lower surface of the sliding concave plate 16 slides to the high friction area of ​​the lower stainless steel plate 17 for secondary energy consumption (the stainless steel plate 17 has a low friction coefficient in the first half of the stroke and a high friction coefficient in the second half of the stroke); when the earthquake displacement reaches the limit position, the spring 20 is compressed 100% and combined with the lateral stopper to lock the support up and down to prevent the beam from falling; after the earthquake, the spring 20 compresses the elastic force to reset the support to its normal position, which greatly increases the post-earthquake repairability of the beam.

[0043] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A maintenance-free self-resetting seismic isolation ball steel bearing, characterized by: The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts.

2. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 1 is characterized in that: The upper surface of the spherical crown lining is a plane and the lower surface is a spherical surface. The middle part of the upper surface of the sliding concave plate is provided with the concave spherical surface and the lower surface is a plane. The upper and lower surfaces of the spherical crown lining are both embedded with sliding plates of matching shapes, and the material of the sliding plates is modified ultra-high molecular weight polyethylene.

3. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 1 is characterized in that: The surfaces of the upper support plate and the lower support plate located in the slot are both welded with stainless steel plates, and the thickness of the stainless steel plates is 2mm-3mm.

4. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 1 is characterized in that: The lubrication assembly includes a plurality of grease storage grooves which are arranged at equal intervals on the lower plane of the sliding concave plate. The grease storage grooves are stepped grooves. The large end of the stepped groove is located on the outside and is clamped with a sealing gasket, and the small end is located on the inside and contains silicone grease. The lower surface of the sliding concave plate is embedded with a slide plate made of modified ultra-high molecular weight polyethylene with a matching shape, and the sealing gasket and the slide plate are provided with corresponding oil holes.

5. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 1 is characterized in that: The shock absorbing assembly includes a baffle, a guide plate, a screw and a spring. A plurality of guide plates and screws are arranged at equal intervals on one side of the baffle. The guide plates and screws are arranged at intervals. The other end of the screw movably passes through the slot wall of the lower support plate and is connected through a limiting lock nut. A gap is arranged between the other end of the guide plate and the inner wall of the slot of the lower support plate, and a plurality of springs are passed through the screw.

6. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 5 is characterized in that: The abutting surface of the baffle is welded with a stainless steel mirror plate, and the bottom surface is welded with a copper-based sliding strip; the guide plate is L-shaped, and the front end of the guide plate can be inserted into the square hole on the card slot, and the rear end is stuck on one side of the square hole; the spring includes a steel spring and a rubber spring.

7. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 1 is characterized in that: One end of a lateral stopper is connected to the slot on at least one side of the lower support plate through a shear bolt, and the other end of the lateral stopper is movably connected to the slot of the upper support plate.

8. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 7 is characterized in that: The lateral stop block includes a limit stop block, a concave ball block, a convex ball block and an elastic block. A groove is provided at one end of the lateral stop block connected to the upper support plate. The elastic block, the concave ball block and the convex ball block are arranged in sequence from the inside to the outside of the groove. A spherical groove is provided at the outer end of the concave ball block. A spherical surface is provided at one end of the convex ball block and a plane is provided at the other end. The spherical surface of the convex ball block is movably matched in the spherical groove, and the plane of the convex ball block conflicts with the groove wall of the card slot connected to the upper support plate.

9. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 8 is characterized in that: The spherical groove of the concave ball block and the plane of the convex ball block are both welded with stainless steel mirror panels, the spherical surface of the convex ball block is polished and chrome-plated, and the position where the slot wall connected to the upper support plate abuts against the plane of the convex ball block is welded with a stainless steel mirror panel.

10. The maintenance-free self-resetting vibration-isolating spherical steel bearing according to claim 1 is characterized in that: The upper support plate and the lower support plate are both connected to the building components through anchor bolts, and sleeves are passed through the anchor bolts.

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