Bridge anti-seismic support

Abstract

The utility model discloses a bridge anti-seismic support which comprises a base, the top of the base is fixedly connected with a fixed seat, a supporting seat is arranged above the fixed seat, a movable groove is formed in the top of the fixed seat, a movable block is connected in the movable groove in a nested and sliding mode, and the top of the movable block is fixedly connected with the bottom of the supporting seat. A limiting groove is formed in the movable groove, the bottom of the movable block is fixedly connected with a limiting plate which is in nested sliding fit with the limiting groove, a shock pad and a buffer layer are arranged in the limiting groove, and fixing grooves are formed in the corresponding positions in the shock pad and the buffer layer. According to the shock-absorbing support, when the whole support is affected by shock, the piston column is compressed to contract, the shock-absorbing spring is compressed, and the shock-absorbing cushion compresses the buffer layer, so that the shock effect can be effectively reduced, shock damage to the connecting position of a bridge and the support is reduced, the influence on the stability of the bridge is reduced, and the stability of the bridge is enhanced in an auxiliary manner.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge bearings, in particular to a bridge seismic isolation bearing. Background Art

[0002] A bridge is a structure mainly used to enable vehicles, pedestrians, etc. to pass smoothly. It is usually erected over rivers, lakes, seas or other obstacles to maintain the continuity of the road. The definition of a bridge can be extended to buildings that span mountain streams, poor geological conditions or other traffic needs to adapt to the modern rapidly developing transportation industry;

[0003] For the existing bridge bearings, although the bearing capacity is stable, the seismic performance is relatively average. When subjected to vibration, it will affect the connection position between the bearing and the bridge, reducing its stability and thus affecting the durability of the bridge. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to provide a bridge seismic isolation bearing.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A bridge seismic isolation bearing, including a base, a fixed seat is fixedly connected to the top of the base, a support seat is arranged above the fixed seat, and a movable groove is arranged on the top of the fixed seat. A movable block is nested and slidably connected in the movable groove, the top of the movable block is fixedly connected to the bottom of the support seat, a limiting groove is arranged in the movable groove, and a limiting plate nested and slidably matched with the limiting groove is fixedly connected to the bottom of the movable block. A shock-absorbing pad and a buffer layer are respectively arranged in the limiting groove, fixing grooves are arranged at corresponding positions in the shock-absorbing pad and the buffer layer, shock-absorbing dampers are embedded and installed in the fixing grooves, piston columns fixedly connected to the limiting plate are arranged on the shock-absorbing dampers, and shock-absorbing springs are nested on the outer sides of the piston columns.

[0006] As a further description of the above technical solution:

[0007] A plurality of shock-absorbing dampers are provided.

[0008] As a further description of the above technical solution:

[0009] A limiting guide plate is fixedly connected to the bottom of the support seat, a limiting slider is fixedly connected to the limiting guide plate, a limiting sliding groove nested and slidably matched with the limiting slider is arranged on the outer surface of the fixed seat, and a buffer spring is connected between the bottom of the inner wall of the limiting sliding groove and the bottom of the limiting slider.

[0010] As a further description of the above technical solution:

[0011] The cross-sections of the limiting slider and the limiting chute are both T-shaped.

[0012] As a further description of the above technical solution:

[0013] Two sets of the limiting guide plate, the limiting slider, the limiting chute and the buffer spring structure are provided and located on both sides below the support seat.

[0014] As a further description of the above technical solution:

[0015] The buffer layer is located in the middle of the shock pad, and the buffer layer is in the form of an airbag pad.

[0016] The utility model has the following beneficial effects:

[0017] For this bridge seismic isolation bearing, when the whole bearing is affected by vibration, the piston column is compressed and shrunk, and at the same time, the shock-absorbing spring is compressed, and the shock pad compresses the buffer layer. In this way, the vibration effect can be effectively reduced, the vibration damage to the connection position between the bridge and the bearing can be reduced, and thus the influence on the stability of the bridge can be reduced, and the stability of the bridge can be assisted and enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a bridge seismic isolation bearing proposed by the utility model;

[0019] Figure 2 It is a front view of a bridge seismic isolation bearing proposed by the utility model;

[0020] Figure 3 It is a schematic diagram of the limiting guide plate structure of a bridge seismic isolation bearing proposed by the utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Base; 2. Fixed seat; 3. Support seat; 4. Moving groove; 5. Moving block; 6. Limiting groove; 7. Limiting plate; 8. Shock pad; 9. Buffer layer; 10. Fixed groove; 11. Shock damping device; 12. Piston column; 13. Shock-absorbing spring; 14. Limiting guide plate; 15. Limiting slider; 16. Limiting chute; 17. Buffer spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. 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. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Referring to Figures 1-3 , an embodiment provided by the present utility model: a bridge seismic isolation bearing, including a base 1, a fixed seat 2 is fixedly connected to the top of the base 1, a support seat 3 is arranged above the fixed seat 2, the support seat 3 is the bridge support installation part, a movable groove 4 is arranged on the top of the fixed seat 2, a movable block 5 is nested and slidably connected in the movable groove 4, the top of the movable block 5 is fixedly connected to the bottom of the support seat 3, a limiting groove 6 is arranged in the movable groove 4, a limiting plate 7 which is nested and slidably matched with the limiting groove 6 is fixedly connected to the bottom of the movable block 5, a shock-absorbing pad 8 and a buffer layer 9 are respectively arranged in the limiting groove 6, the buffer layer 9 is located at the middle position of the shock-absorbing pad 8, and the buffer layer 9 is in the form of an airbag pad. Fixed grooves 10 are arranged at corresponding positions in the shock-absorbing pad 8 and the buffer layer 9, shock-absorbing dampers 11 are embedded and installed in the fixed grooves 10, there are multiple shock-absorbing dampers 11, and at least four fixed grooves 10 and shock-absorbing dampers 11 are arranged in a rectangular form in the fixed seat 2. A piston column 12 fixedly connected to the limiting plate 7 is arranged on the top of the shock-absorbing damper 11, a shock-absorbing spring 13 is nested on the outer side of the piston column 12. When the entire bearing is affected by vibration, the piston column 12 is compressed and contracted, and at the same time, the shock-absorbing spring 13 is compressed, and the shock-absorbing pad 8 compresses the buffer layer 9. In this way, the vibration effect can be effectively reduced, the vibration damage to the connection position between the bridge and the bearing can be reduced, and the stability of the bridge can be enhanced.

[0026] The bottom of the support seat 3 is fixedly connected with a limit guide plate 14, and a limit slider 15 is fixedly connected to the limit guide plate 14. A limit chute 16 that is nested and slidably matched with the limit slider 15 is arranged on the outer surface of the fixed seat 2. A buffer spring 17 is connected between the bottom of the inner wall of the limit chute 16 and the bottom of the limit slider 15. The cross-sections of the limit slider 15 and the limit chute 16 are both T-shaped. The structures of the limit guide plate 14, the limit slider 15, the limit chute 16 and the buffer spring 17 are provided in two groups and are located on both sides below the support seat 3. The setting of this structure can assist in enhancing the stability of the entire bearing structure of the bridge. When subjected to a vibration force, the limit guide plate 14 and the limit slider 15 can slide smoothly, playing an auxiliary guiding and limiting effect.

[0027] Working principle: When using the bridge seismic bearing, when the entire bearing is affected by vibration, the piston column 12 is compressed and contracted, and at the same time, the shock-absorbing spring 13 is compressed, and the shock-absorbing pad 8 compresses the buffer layer 9. In this way, the vibration effect can be effectively reduced, the vibration damage caused to the connection position between the bridge and the bearing can be reduced, and thus the influence on the stability of the bridge can be reduced, and the stability of the bridge can be assisted in enhancing.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge seismic isolation bearing, comprising a base (1), characterized in that: A fixing base (2) is fixedly connected to the top of the base (1). A support base (3) is arranged above the fixing base (2). An activity groove (4) is arranged at the top of the fixing base (2). An activity block (5) is nested and slidably connected in the activity groove (4). The top of the activity block (5) is fixedly connected to the bottom of the support base (3). A limiting groove (6) is arranged in the activity groove (4). A limiting plate (7) which is nested and slidably matched with the limiting groove (6) is fixedly connected to the bottom of the activity block (5). A shock-absorbing pad (8) and a buffer layer (9) are respectively arranged in the limiting groove (6). Fixing grooves (10) are arranged at corresponding positions in the shock-absorbing pad (8) and the buffer layer (9). A shock-absorbing damper (11) is embedded and installed in the fixing groove (10). A piston column (12) whose top end is fixedly connected to the limiting plate (7) is arranged on the shock-absorbing damper (11). A shock-absorbing spring (13) is nested on the outer side of the piston column (12).

2. The aseismic bearing for bridges according to claim 1, characterized in that: A plurality of the shock-absorbing dampers (11) are provided.

3. The aseismic bearing for bridge according to claim 1, characterized in that: A limiting guide plate (14) is fixedly connected to the bottom of the support base (3). A limiting slider (15) is fixedly connected to the limiting guide plate (14). A limiting sliding groove (16) which is nested and slidably matched with the limiting slider (15) is arranged on the outer surface of the fixing base (2). A buffer spring (17) is connected between the bottom of the inner wall of the limiting sliding groove (16) and the bottom of the limiting slider (15).

4. The aseismic bearing for bridge according to claim 3, wherein: The cross sections of the limiting slider (15) and the limiting sliding groove (16) are both T-shaped.

5. The aseismic bearing for bridge according to claim 3, characterized in that: Two sets of the structures of the limiting guide plate (14), the limiting slider (15), the limiting sliding groove (16) and the buffer spring (17) are provided and are located at two side positions below the support base (3).

6. The seismic isolation bearing for a bridge according to claim 1, characterized in that: The buffer layer (9) is located at the middle position of the shock-absorbing pad (8), and the buffer layer (9) is in the form of an airbag pad.

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