Steel arm damping spherical support

Abstract

The utility model discloses a steel arm damping spherical support which comprises a top plate and a bottom basin, the top plate is installed on the bottom basin, a spherical crown steel lining plate is installed between the top plate and the bottom basin, and a steel arm damping structure is further installed between the top plate and the bottom basin. The steel arm damping structure is fixedly connected with the lower surface of the top plate and the upper surface of the bottom basin through positioning bolts. By means of the mode, the steel arm damping spherical support and the bridge support are of a steel arm damping structure, beam falling damage of a beam body can be reduced, the bridge structure and traffic safety are protected, and the steel arm damping spherical support is simple in structure, easy to manufacture, convenient and fast to install and convenient to repair and replace after an earthquake.

Description

Technical Field

[0001] The utility model belongs to the field of bridge construction engineering, and particularly relates to a steel arm damping spherical bearing. Background Art

[0002] The spherical bearing is an important component connecting the upper structure and the lower structure of the bridge. It can reliably transfer the reaction force and deformation of the upper structure of the bridge to the lower structure of the bridge. The spherical bearing is widely used because of its advantages such as uniform reaction force, small rotation moment, and large rotation angle adaptation.

[0003] When the conventional spherical bearing is applied to areas that require seismic fortification, it is often necessary to adjust the internal structure, size or material strength of the bearing, which belongs to a hard resistance method. The conventional spherical bearing also does not have the function of preventing the falling of the beam. Since the top plate of the bearing is installed in contact with the bottom of the bridge, under the action of seismic force, the top plate will displace excessively with the beam body, and thus separate from the lower structure of the bearing and cannot be restored, there is a risk of beam falling. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a steel arm damping spherical bearing, which can reduce the harm of beam falling, protect the bridge structure and traffic safety, has a simple structure, is easy to manufacture, convenient to install, and is convenient for post-earthquake repair and replacement.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: a steel arm damping spherical bearing, including a top plate and a bottom basin, the top plate is installed on the bottom basin, a spherical crown steel liner is installed between the top plate and the bottom basin, and a steel arm damping structure is also installed between the top plate and the bottom basin;

[0006] The steel arm damping structure is fixedly connected to the lower surface of the top plate and the upper surface of the bottom basin respectively through positioning bolts.

[0007] In a preferred embodiment of the utility model, the steel arm damping structure includes a limiting plate and a steel arm damping element, the limiting plate is connected to the lower surface of the top plate, the steel arm damping element is connected to the upper surface of the bottom basin, a limiting groove is provided at the bottom of the limiting plate, the limiting groove is matched with a limiting block at the top of the steel arm damping element, and the limiting block is connected to the limiting groove.

[0008] In a preferred embodiment of the utility model, a boss is provided on the bottom basin, a pelvic cavity is opened on the upper surface of the boss, the spherical crown steel liner is connected to the pelvic cavity through the spherical surface wear-resistant plate, and installation strips are symmetrically provided on both sides of the top of the boss.

[0009] In a preferred embodiment of the present utility model, two mounting plates are symmetrically provided at the bottom of the top plate. The left and right mounting plates are respectively located on the left side and the right side of the left and right mounting bars. A first friction pair is installed between the mounting plate and the mounting bar on the same side. The first friction pair includes a side stainless steel plate and a side wear-resistant plate, and the side stainless steel plate and the side wear-resistant plate are respectively installed on the opposite surfaces of the mounting plate and the mounting bar on the same side.

[0010] In a preferred embodiment of the present utility model, a second friction pair is installed between the top plate and the spherical crown steel liner. The second friction pair includes a flat stainless steel plate and a flat wear-resistant plate, and the flat stainless steel plate and the flat wear-resistant plate are respectively installed in the groove on the bottom surface of the top and the top of the spherical crown steel liner.

[0011] In a preferred embodiment of the present utility model, lubricating grease is coated on the surfaces of the spherical wear-resistant plate, the side wear-resistant plate and the flat wear-resistant plate.

[0012] The beneficial effects of the present utility model are as follows: A steel arm damping spherical bearing of the present utility model adopts a steel arm damping structure, which can reduce the risk of beam falling, protect the bridge structure and traffic safety. Its structure is simple, easy to manufacture, convenient to install, and easy to repair and replace after an earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a half-sectional view of the front view of a steel arm damping spherical bearing.

[0014] Figure 2 It is the left view of a steel arm damping spherical bearing.

[0015] The labels of each component in the drawings are as follows: 1. Top plate; 2. Bottom basin; 3. Boss; 4. Flat stainless steel plate; 5. Side stainless steel plate; 6. Spherical crown steel liner; 7. Flat wear-resistant plate; 8. Spherical wear-resistant plate; 9. Side wear-resistant plate; 10. Limiting plate; 11. Steel arm damping element; 12. Limiting groove; 13. Limiting block; 14. Mounting bar; 15. Mounting plate; 16. Pelvic cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will elaborate on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0017] Please refer to Figure 1 and Figure 2, the embodiments of the present utility model include: a steel arm damping spherical bearing, which includes a top plate 1 and a bottom basin 2. The top plate 1 is installed on the bottom basin 2, and the top plate 1 contacts the bottom of the bridge beam to transfer the load of the upper structure.

[0018] The lower part of the bottom basin 2 contacts the pier top cushion stone to transfer the load of the upper structure to the pier.

[0019] A spherical crown steel liner 6 is installed between the top plate 1 and the bottom basin 2. While transferring the upper vertical load, the spherical crown steel liner 6 can adapt to the disturbance of the upper bridge structure due to various reasons such as load through the rotation of the arc surface, and can also perform planar rotation on the bottom basin 2.

[0020] A steel arm damping structure is also installed between the top plate 1 and the bottom basin 2, which can reduce the risk of the beam falling off, protect the bridge structure and traffic safety. Its structure is simple, easy to manufacture, convenient to install, and easy to repair and replace after an earthquake.

[0021] The steel arm damping structure is fixedly connected to the lower surface of the top plate 1 and the upper surface of the bottom basin 2 respectively through positioning bolts.

[0022] For the spherical bearing combined with the steel arm damping structure, during the normal operation of the bearing, the steel arm damping structure can adapt to the displacement changes in all directions of the bearing without interfering with the normal working state of the bearing. Under the action of seismic force, the steel arm damping structure can undergo plastic deformation to consume seismic energy, thus playing a role in shock absorption. In addition, under the action of excessive seismic force, when the bearing undergoes excessive displacement, the steel arm damping structure can also play a limiting role to reduce the risk of the beam falling off. Besides meeting the normal operation requirements of the bridge, it can also protect the bridge structure and traffic safety. Its structure is simple, easy to manufacture, convenient to install, and easy to repair and replace after an earthquake.

[0023] The steel arm damping structure includes a limit plate 10 and a steel arm damping element 11. The steel arm damping structure body is a shock absorption device of an equal-moment cantilever beam, designed according to the principles of structural mechanics and elastoplastic mechanics, with simple structure and clear force.

[0024] The limit plate 10 is connected to the lower surface of the top plate 1, and the steel arm damping element 11 is connected to the upper surface of the bottom basin 2. A limit groove 12 is provided at the bottom of the limit plate 10. When the beam rotates, it can rotate relative to the steel arm damping element 11 without jamming. When the beam undergoes displacement, it can drive the steel arm damping element 11 to undergo flexural deformation.

[0025] The limiting groove 12 cooperates with the limiting block 13 at the top of the steel arm damping element 11. The limiting block 13 is connected to the limiting groove 12. The limiting block 13 is spherical, and its material types include low-alloy high-strength alloy steel and damping alloy steel, and it is integrally processed by precision numerical control equipment.

[0026] During normal use, when the beam body undergoes displacement, the limiting plate 10 drives the steel arm damping element 11 to undergo flexural deformation and bear the horizontal force. At this time, the steel arm damping element 11 is in the elastic working state.

[0027] During an earthquake, due to the beam body bearing greater seismic force and horizontal displacement, at this time the limiting plate 10 will drive the steel arm damping element 11 to undergo larger flexural deformation and bear the horizontal force. At this time, the steel arm damping element 11 is in the elastoplastic working stage, and it can consume seismic energy and realize the function of preventing the beam from falling.

[0028] The base basin 2 is provided with a convex platform 3. The upper surface of the convex platform 3 is provided with a pelvic cavity 16, and the spherical crown steel liner 6 and the spherical surface wear-resistant plate 8 are limited therein by the pelvic cavity 16.

[0029] The spherical crown steel liner 6 is connected to the pelvic cavity 16 through the spherical surface wear-resistant plate 8. Installation strips 14 are symmetrically arranged on both sides of the top of the convex platform 3.

[0030] Two installation plates 15 are symmetrically arranged at the bottom of the top plate 1. The left and right installation plates 15 are respectively located on the left and right sides of the left and right installation strips 14. A first friction pair is installed between the installation plate 15 on the same side and the installation strip 14. The first friction pair is used to adapt to the displacement change of the bridge due to temperature and braking force.

[0031] The first friction pair includes a side stainless steel plate 5 and a side wear-resistant plate 9. The side stainless steel plate 5 and the side wear-resistant plate 9 are respectively installed on the opposite surfaces of the installation plate 15 and the installation strip 14 on the same side.

[0032] A second friction pair is installed between the top plate 1 and the spherical crown steel liner 6. The second friction pair is used to adapt to the displacement change of the bridge due to temperature and braking force.

[0033] The second friction pair includes a flat stainless steel plate 4 and a flat wear-resistant plate 7. The flat stainless steel plate 4 and the flat wear-resistant plate 7 are respectively installed in the groove at the bottom surface of the top and on the top of the spherical crown steel liner 6.

[0034] The surfaces of the spherical surface wear-resistant plate 8, the side wear-resistant plate 9 and the flat wear-resistant plate 7 are all coated with grease, and all are made of polymer materials, which can provide a lower friction coefficient.

[0035] Compared with the prior art, a spherical bearing with a steel arm damper according to the present utility model is provided. The bridge bearing adopts a steel arm damping structure, which can reduce the risk of beam falling and protect the bridge structure and traffic safety. It has a simple structure, is easy to manufacture and install, and is convenient for post-earthquake repair and replacement.

[0036] The spherical bearing combined with the steel arm damping structure has the functions of seismic isolation and anti-falling beam. The steel arm damping element is independently arranged, coordinates with the normal operation of the bearing and has a clear division of labor.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0038] The above are only embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A steel arm damping ball bearing, comprising a top plate and a bottom basin, wherein the top plate is mounted on the bottom basin, and a spherical crown steel lining plate is installed between the top plate and the bottom basin, characterized in that: A steel arm damping structure is also installed between the top plate and the bottom basin; The steel arm damping structure is fixedly connected to the lower surface of the top plate and the upper surface of the bottom basin respectively through positioning bolts.

2. The steel arm damping spherical bearing according to claim 1, characterized in that: The steel arm damping structure includes a limit plate and a steel arm damping element, the limit plate is connected to the lower surface of the top plate, the steel arm damping element is connected to the upper surface of the bottom basin, a limit groove is provided at the bottom of the limit plate, the limit groove cooperates with the limit block at the top of the steel arm damping element, and the limit block is connected to the limit groove.

3. A steel arm damping ball bearing according to claim 2, characterized in that: The bottom basin is provided with a boss, the upper surface of the boss is provided with a basin cavity, the spherical crown steel liner is connected to the basin cavity through a spherical wear-resistant plate, and mounting strips are symmetrically provided on both sides of the top of the boss.

4. The steel arm damping ball bearing according to claim 3, characterized in that: Two mounting plates are symmetrically provided at the bottom of the top plate, and the left and right mounting plates are respectively located on the left and right sides of the left and right mounting strips, and a first friction pair is installed between the mounting plate and the mounting strip on the same side, and the first friction pair includes a side stainless steel plate and a side wear-resistant plate, and the side stainless steel plate and the side wear-resistant plate are respectively installed on the opposite surfaces of the mounting plate and the mounting strip on the same side.

5. The steel arm damping ball bearing according to claim 4, characterized in that: A second friction pair is installed between the top plate and the spherical crown steel liner, and the second friction pair includes a flat stainless steel plate and a flat wear-resistant plate. The flat stainless steel plate and the flat wear-resistant plate are respectively installed in the grooves on the bottom surface of the top and the top of the spherical crown steel liner.

6. The steel arm damping ball bearing according to claim 5, characterized in that: The surfaces of the spherical wear-resistant plate, the side wear-resistant plate and the plane wear-resistant plate are all coated with grease.

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