Speed locking type ball steel support

Abstract

The utility model discloses a speed locking type ball steel support which comprises an upper seat plate, a spherical crown lining plate, a lower bottom basin and a speed locking device, and is characterized in that the upper seat plate is a buckle plate with a rectangular notch, and the upper seat plate is buckled on the spherical crown lining plate through the rectangular notch; the spherical crown lining plate is arranged in the rectangular notch of the upper seat plate, the spherical crown lining plate is in plane sliding connection with the rectangular notch, and the spherical crown lining plate is in spherical sliding connection with the lower bottom basin; the two speed locking devices are symmetrically arranged in the middles of the two sides of the lower bottom basin, and the relative displacement between the upper base plate and the lower bottom basin is locked through the ball steel support under the earthquake action. Compared with the prior art, under the action of an earthquake, the bottom basin and the upper base plate are locked, the earthquake force of the upper main beam is shared, the earthquake force borne by other piers is reduced, after the earthquake is finished, the support can restore to the working state of conventional displacement, the structure is simple, the manufacturing cost is low, installation is convenient and fast, and good economic practicability and popularization prospects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge bearings, in particular to a speed-locking spherical steel bearing. Background Art

[0002] A bridge bearing is an important component connecting the upper structure and the lower structure of a bridge. It reliably transfers the reaction force and deformation generated by the load of the upper structure to the lower structure through its own structure, and also ensures the coordinated deformation of the upper and lower structures of the bridge under factors such as temperature load, concrete shrinkage and creep.

[0003] At present, the spherical steel bearings commonly used on highway and railway bridges are divided into fixed type, single-direction type and multi-direction type. The single-direction and multi-direction movable spherical bearings should not only meet the requirements of vertical and horizontal bearing capacities, but also meet the requirements of horizontal deformation and beam body rotation. Under the action of conventional loads, only one pier in the longitudinal direction of a continuous beam bridge is provided with a fixed bearing (fixed pier), and the remaining piers (movable piers) are provided with movable bearings to adapt to the deformation caused by loads such as temperature.

[0004] Under the action of an earthquake, the existing spherical steel bearing only relies on one fixed pier to bear the earthquake action, resulting in a large force on the fixed pier and being difficult to design, or the fixed pier needs to have a large volume to meet the design requirements. Content of the Utility Model

[0005] The purpose of the utility model is to design a speed-locking spherical steel bearing aiming at the deficiencies of the prior art. The spherical steel bearing structure with a speed lock between the upper seat plate with a rectangular notch and the bottom basin is adopted to realize the locking function of the relative displacement between the upper seat plate and the bottom basin under the action of an earthquake, so that there is no relative displacement between the upper seat plate and the lower bottom basin, so as to meet the requirement that the seismic force of the main beam can be transmitted to the pier through the upper seat plate, the speed lock and the lower bottom basin, and the seismic force of the main beam can be distributed among the piers, greatly reducing the construction cost of the pier. After the earthquake, the spherical steel bearing can be restored to the normal displacement working state again. The bearing structure is simple, the manufacturing cost is low, the installation is convenient, and it has good economic practicability and popularization prospect.

[0006] The specific technical solution for achieving the purpose of the present utility model is: a speed-locking spherical steel bearing, including an upper seat plate, a spherical crown liner, a lower base basin, and a speed lock. The spherical crown liner is arranged between the upper seat plate and the lower base basin. The spherical crown liner is in planar sliding connection with the upper seat plate and in spherical sliding connection with the lower base basin. There are two speed locks, symmetrically arranged in the middle of both sides of the base basin. Its feature is that the upper seat plate is a buckle plate with a rectangular notch, and the upper seat plate is buckled on the spherical crown liner through the rectangular notch; the spherical crown liner is arranged in the rectangular notch of the upper seat plate, and a first friction pair is provided at the planar connection of the spherical crown liner and the rectangular notch, and a second friction pair is provided at the spherical contact of the spherical crown liner and the lower base basin; both ends of the speed lock are respectively provided with hanging ears perpendicular to each other. One end of the hanging ear is hinged to the A ear hinge seat arranged under the upper seat plate, and the other end of the hanging ear is hinged to the B ear hinge seat arranged in the middle of the lower base basin, so as to lock the relative displacement between the upper seat plate and the lower base basin under the action of an earthquake.

[0007] The gap between the speed lock and the upper part of the lower base basin in the transverse bridge direction is not less than 10 mm.

[0008] The locking speed of the speed lock is ≥1 mm / s.

[0009] The first friction pair is composed of mirror stainless steel and a modified ultra-high molecular weight polyethylene plate; the second friction pair is composed of spherical chromium plating and a modified ultra-high molecular weight polyethylene plate.

[0010] The thickness of the mirror stainless steel is not less than 2 mm; the thickness of the spherical chromium plating is not less than 100 μm; the thickness of the modified ultra-high molecular weight polyethylene plate is not less than 7 mm; and a grease storage groove with a gap not exceeding 3 mm is provided on the surface in contact with the spherical chromium plating, and lubricating grease is provided in the grease storage groove; the lubricating grease is 5201 silicone grease.

[0011] Compared with the prior art, the present utility model has the function of locking the relative displacement between the upper seat plate and the lower base basin under the action of an earthquake, so that there is no relative displacement between the upper seat plate and the lower base basin, sharing the earthquake force of the upper main beam, thereby reducing the earthquake force borne by other bridge piers, so as to meet the requirement that the earthquake force of the main beam can be transmitted to the bridge pier through the upper seat plate, the speed lock, and the lower base basin, and the earthquake force of the main beam can be distributed among each pier, greatly reducing the construction cost of the bridge pier. After the earthquake, the spherical steel bearing can be restored to the working state of conventional displacement. The bearing structure is simple, the manufacturing cost is low, the installation is convenient, and it has good economic practicality and popularization prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the present invention;

[0013] Figure 2 For Figure 1 side view of

[0014] Figure 3 It is a schematic structural diagram of a speed lock. Specific implementation mode

[0015] Refer to Figures 1 to 2 , the utility model includes: an upper seat plate 1, a spherical crown lining plate 3, a lower bottom basin 5 and a speed lock 6. The upper seat plate 1 is a buckling plate provided with a rectangular notch 11, and the upper seat plate 1 is buckled on the spherical crown lining plate 3 through the rectangular notch 11; the spherical crown lining plate 3 is arranged in the rectangular notch 11 of the upper seat plate 1, and a first friction pair 2 is arranged at the plane connection part between the spherical crown lining plate 3 and the rectangular notch 11. A second friction pair 4 is arranged at the spherical contact part between the spherical crown lining plate 3 and the lower bottom basin 5. The spherical crown lining plate 3 is in planar sliding connection with the upper seat plate 1, and the spherical crown lining plate 3 is in spherical sliding connection with the lower bottom basin 5; two speed locks 6 are arranged under the upper seat plate 1 and are symmetrically arranged on both sides of the middle part of the lower bottom basin 5; the speed lock 6 is a spherical plain bearing, and lugs 9 which are perpendicular to each other are respectively arranged at both ends thereof. One end of the lug 9 is hinged to the A-ear hinge seat 7 arranged at the lower end of the upper seat plate 1, and the other end of the lug 9 is hinged to the B-ear hinge seat 14 arranged in the middle part of the bottom basin 5. During an earthquake, the speed lock 6 can lock the relative displacement between the upper seat plate 1 and the bottom basin 5.

[0016] The upper seat plate 1 and the lower bottom basin 5 are respectively fixed to the main beam and the bridge pier by means of anchor bolts or welding, etc.; the first friction pair 2 includes a mirror stainless steel plate with a thickness of not less than 2 mm pasted on the bottom surface of the upper seat plate 1; a planar wear-resistant plate with a thickness of not less than 7 mm is embedded on the upper surface of the spherical crown lining plate 3. The material thereof is a modified ultra-high molecular weight polyethylene plate, and a grease storage groove with a gap of not more than 3 mm is arranged on the surface. 5201 silicone grease is arranged in the grease storage groove, and the surface provided with 5201 silicone grease is closely attached to the mirror stainless steel plate, so that a grease film is formed on the contact surface, thereby reducing the wear of the sliding between the upper seat plate 1 and the spherical crown lining plate 3; the lower bottom basin 5 is in spherical sliding connection with the spherical crown lining plate 3, and a second friction pair 4 is arranged at this connection part, so that the spherical crown lining plate 3 can slide back and forth or rotate around the center of the spherical surface with the lower bottom basin 5; the second friction pair 4 includes a spherical chromium plating layer with a chromium plating thickness of not less than 100 μm arranged in the spherical groove 13 of the lower bottom basin 5 and a spherical wear-resistant plate embedded in the spherical bottom surface of the spherical crown lining plate 3. The spherical wear-resistant plate is a modified ultra-high molecular weight polyethylene plate, and a grease storage groove with a gap of not more than 3 mm is arranged on the surface. 5201 silicone grease is arranged in the grease storage groove, and the surface provided with 5201 silicone grease is closely attached to the spherical chromium plating layer, so that a grease film is formed on the contact surface, thereby realizing the relative sliding or rotation of the bearing and reducing the wear.

[0017] A speed lock 6 is symmetrically arranged between the end of the upper seat plate 1 and the lower bottom basin 5. The lug 9 at one end is hinged to the lower end of the upper seat plate 1 through an A ear hinge seat 7, and the lug 9 at the other end is hinged to a B ear hinge seat 14 arranged in the middle of the lower bottom basin 5 to adapt to the angular deformation between the upper seat plate 1 and the lower bottom basin 5. The locking speed of the speed lock 6 is ≥1 mm / s, and the gap between the transverse bridge direction and the upper part of the lower bottom basin 5 is not less than 10 mm.

[0018] Refer to Figure 3 , the speed lock 6 is a spherical plain bearing with lugs 9 at both ends. The two lugs 9 are perpendicular to each other. The lug 9 at one end is hinged to the A ear hinge seat 7 arranged under the upper seat plate 1, and the lug 9 at the other end is hinged to the B ear hinge seat 14 arranged in the middle of the lower bottom basin 5. During an earthquake, the speed lock 6 can lock the relative displacement between the upper seat plate 1 and the lower bottom basin 5, realizing the locking function of the spherical steel bearing, so that there is no relative displacement between the upper seat plate 1 and the lower bottom basin 5, so as to meet the requirement that the seismic force of the main girder can be transmitted to the pier through the upper seat plate 1, the speed lock 6 and the lower bottom basin 5.

[0019] The utility model meets the relative displacement requirements during the normal operation of the bearing by setting the sliding plane and sliding spherical surface between the spherical crown liner 3 and the upper seat plate 1 and the lower bottom basin 5, and symmetrically arranges a speed lock 6 between the lower end of the upper seat plate 1 and the middle of the lower bottom basin 5. The lugs 9 at both ends are connected to the lower end of the upper seat plate 1 and the middle of the lower bottom basin 5 by ear seat hinges, ensuring that there is no relative displacement between the upper seat plate 1 and the lower bottom basin 5 when the speed lock 6 is locked, meeting the requirement that the seismic force of the main girder under earthquake action can be transmitted to the pier through the upper seat plate 1, the speed lock 6 and the lower bottom basin 5. By arranging the speed lock 6 between the upper seat plate 1 and the lower bottom basin 5, the locking function of the spherical steel bearing under earthquake action is realized. After the earthquake, the spherical steel bearing can return to the working state of normal displacement.

[0020] The above embodiments are only for further explaining the present invention, and are not used to limit the patent of the present invention. All equivalent implementations of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A speed locking type ball steel bearing, comprising an upper seat plate (1), a ball crown lining plate (3), a lower bottom basin (5) and a speed locker (6), wherein the ball crown lining plate (3) is arranged between the upper seat plate (1) and the lower bottom basin (5), the ball crown lining plate (3) and the upper seat plate (1) are in a planar sliding connection, the ball crown lining plate (3) and the lower bottom basin (5) are in a spherical sliding connection, the speed locker (6) is two and is symmetrically arranged in the middle of both sides of the lower bottom basin (5), characterized in that: The upper seat plate (1) is a buckle plate provided with a rectangular notch (11), and the upper seat plate (1) is buckled on the spherical crown lining plate (3) by the rectangular notch (11); the spherical crown lining plate (3) is arranged in the rectangular notch (11) of the upper seat plate (1), and a first friction pair (2) is provided at the plane connection between the spherical crown lining plate (3) and the rectangular notch (11), and a second friction pair (4) is provided at the spherical contact between the spherical crown lining plate (3) and the lower bottom basin (5); the speed locker (6) is provided with hanging ears (9) arranged perpendicular to each other at both ends, and the hanging ear (9) at one end is hinged to an A-ear hinge seat (7) arranged under the upper seat plate (1), and the hanging ear (9) at the other end is hinged to a B-ear hinge seat (14) arranged in the middle of the lower bottom basin (5), so that the ball steel bearing can lock the relative displacement between the upper seat plate (1) and the lower bottom basin (5) under the action of an earthquake.

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