Railway bridge support structure

Abstract

The utility model discloses a railway bridge support structure. In the use process of the support, when the stress of an abutment and a bridge floor is inclined, the whole support is inclined laterally. A plurality of upper fixing rings are fixedly arranged at the bottom of an upper support, positioning rods are in threaded connection with the inner walls of the upper fixing rings, and connecting balls are fixedly arranged at the bottom ends of the positioning rods; a plurality of lower fixing rings are fixedly arranged on the surface of the lower support, and the inner walls of the lower fixing rings are in threaded connection with the outer wall of the positioning pipe; the top end in the positioning pipe is a spherical surface; the connecting ball is rotationally connected with the spherical surface of the positioning pipe; the positioning rod and the axis of the positioning pipe are vertically arranged. Through the arrangement of the positioning rod, the positioning pipe and the connecting ball, the top end of the positioning pipe is hemispherical, and when a railway bridge inclines, the positioning pipe can pull the connecting ball, so that the positioning effect is achieved, the loss of the structure is reduced, and the stress can be dispersed by using a cambered surface.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway bridges, and in particular relates to a railway bridge support structure. Background Art

[0002] Bridge bearings are devices installed on piers, and their top surfaces support the superstructure of the bridge. Their function is to fix the superstructure to the piers, withstand various forces acting on the superstructure, and reliably transmit them to the piers. Under the effects of load, temperature, concrete shrinkage and creep, the bearings can adapt to the rotation and displacement of the superstructure, allowing the superstructure to deform freely without generating additional internal forces.

[0003] During use, when the stresses on the pier and bridge deck are diagonal, the entire bearing can tilt. Existing technologies prevent this by using circumferential protective devices. These devices consist of vertically positioned locating rods and locating tubes, which slide together to guide and limit lateral deviation. However, when a railway bridge tilts, friction between the sidewalls of the locating rods and the inner walls of the locating tubes can cause material loss and compromise the stability of the bearing. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, the utility model provides a railway bridge support structure. When the railway bridge tilts, the positioning tube can pull the connecting ball to achieve the positioning effect, reduce the loss of the structure, and use the arc surface to disperse the stress.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0006] A railway bridge support structure, characterized in that it comprises an upper support and a lower support, wherein a plurality of upper fixing rings are fixedly provided at the bottom of the upper support, a positioning rod is threadedly connected to the inner wall of the upper fixing ring, and a connecting ball is fixedly provided at the bottom end of the positioning rod;

[0007] A plurality of lower fixing rings are fixed on the surface of the lower support, and the inner wall of the lower fixing ring is threadedly connected to the outer wall of the positioning tube; the top end of the inner surface of the positioning tube is a spherical surface, and the connecting ball is rotatably connected to the spherical surface of the positioning tube; the positioning rod and the axis of the positioning tube are vertically arranged.

[0008] Furthermore, the bottom edge of the upper support and the top edge of the lower support are both provided with arc surfaces, a rubber layer is provided between the upper support and the lower support, and a protective mechanism is provided on the outer wall of the rubber layer;

[0009] The protection mechanism includes two semi-annular protection shells, which are arranged on the outer periphery of the support and at a height located at the position of the rubber layer; the inner walls of the two protection shells are both bonded with sealing rings.

[0010] Furthermore, two symmetrical positioning bars are fixedly provided on the outer walls of the upper support and the lower support, and the protective shell is located between the positioning bars.

[0011] Furthermore, a plurality of fixing seats are fixedly provided on the outer wall of the upper support, and a rotating shaft is rotatably connected to the fixing seat, and the rotating shaft is rollingly connected to the surface of the positioning rod.

[0012] Furthermore, a rubber pad is provided at the contact position between the positioning tube and the connecting ball.

[0013] Furthermore, the two protective shells are fixedly connected by bolts.

[0014] Furthermore, the outer walls of the positioning rod and the positioning tube are both provided with mounting grooves.

[0015] Furthermore, a plurality of assembly holes are provided on the surfaces of the upper support and the lower support.

[0016] Beneficial effects of the utility model:

[0017] 1) The utility model adopts the arrangement of a positioning rod, a positioning tube and a connecting ball. The top of the positioning tube is hemispherical. When the railway bridge tilts, the positioning tube can pull the connecting ball to achieve the positioning effect, thereby reducing the loss of the structure and dispersing the stress by using the arc surface;

[0018] 2) The utility model can provide sealing protection for the edge of the rubber layer by providing the protective shell and the sealing ring, thereby extending the service life of the rubber layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of a portion of the three-dimensional structure of the utility model from the first perspective;

[0021] Figure 3 A schematic diagram of a portion of the three-dimensional structure of the utility model from a second viewing angle;

[0022] Figure 4 This is a schematic diagram of the protective mechanism structure of the utility model;

[0023] Figure 5 This is a partial cross-sectional structural diagram of the utility model;

[0024] In the figure: 1. Upper support; 2. Lower support; 3. Assembly hole; 4. Upper fixing ring; 5. Arc surface; 6. Positioning strip; 7. Fixing seat; 8. Rotating shaft; 9. Lower fixing ring; 10. Rubber layer; 11. Protective shell; 12. Sealing ring; 13. Mounting groove; 14. Positioning rod; 15. Connecting ball; 16. Positioning tube; 17. Rubber pad. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to specific implementation methods.

[0026] like Figure 1 、 5 As shown, the present invention comprises an upper support 1 and a lower support 2. Multiple upper fixing rings 4 are fixed to the bottom of the upper support 1. Positioning rods 14 are threadedly connected to the inner walls of the upper fixing rings 4. A connecting ball 15 is fixed to the bottom end of the positioning rod 14. Multiple lower fixing rings 9 are fixed to the surface of the lower support 2. The inner walls of the lower fixing rings 9 are threadedly connected to the outer wall of a positioning tube 16. The top end of the positioning tube 16 is spherical, and the connecting ball 15 is rotatably connected to the spherical surface of the positioning tube 16. A rubber pad 17 is provided at the contact point between the positioning tube 16 and the connecting ball 15. The axes of the positioning rods 14 and the positioning tube 16 are arranged vertically. Multiple assembly holes 3 are formed on the surfaces of the upper and lower supports 1 and 2. These assembly holes 3 can be used to install bolts or other fasteners.

[0027] like Figure 2 、 3 As shown in 4, the bottom edge of the upper support 1 and the top edge of the lower support 2 are both provided with a curved surface 5, a rubber layer 10 is provided between the upper support 1 and the lower support 2, and a protective mechanism is provided on the outer wall of the rubber layer 10; the rubber layer 10 has good elasticity and can further absorb and disperse stress;

[0028] The protective mechanism includes two semi-annular protective shells 11, which are arranged around the support and at the same height as the rubber layer 10. Sealing rings 12 are bonded to the inner walls of each protective shell 11. The sealing rings 12 provide sealing protection for the rubber layer 10. The two protective shells 11 are fixed together by bolts.

[0029] The outer walls of the upper support 1 and the lower support 2 are both fixed with two symmetrical positioning bars 6, and the protective shell 11 is located between the positioning bars 6. This arrangement ensures that the protective shell 11 can be accurately aligned during installation, thereby improving the convenience and stability of installation.

[0030] The outer wall of the upper support 1 is fixed with multiple fixing seats 7, and the fixing seats 7 are rotatably connected with a rotating shaft 8. The rotating shaft 8 is rollingly connected to the surface of the positioning rod 14, which can position the positioning rod 14 and further improve the stability of the structure.

[0031] The outer walls of the positioning rod 14 and the positioning tube 16 are both provided with mounting grooves 13 , which can facilitate workers to install the positioning rod 14 and the positioning tube 16 .

[0032] The utility model uses adapted bolts to pass through the assembly holes to fix the support as a whole on the railway bridge, passes the positioning rod through the positioning tube, so that the connecting ball 15 is located in the positioning tube 16, and then the positioning rod 14 and the upper fixing ring 4 are threadedly connected, and the positioning tube 16 and the lower fixing ring 9 are threadedly connected, and the protective shell is encircled around the outside of the rubber layer and located between the positioning strips, and the two protective shells 11 are fixed with bolts; when the railway bridge tilts, the upper support 1 pulls the positioning rod 14 and the connecting ball 15 to move, and at this time the positioning tube 16 pulls the connecting ball 15, thereby achieving the positioning effect.

[0033] In the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] The content of the present invention is not limited to the embodiments listed. Any equivalent transformation of the technical solution of the present invention made by ordinary technicians in this field after reading the description of the present invention is covered by the claims of the present invention.

Claims

1. A railway bridge support structure, characterized by: It comprises an upper support (1) and a lower support (2), wherein a plurality of upper fixing rings (4) are fixedly provided at the bottom of the upper support (1), a positioning rod (14) is threadedly connected to the inner wall of the upper fixing ring (4), and a connecting ball (15) is fixedly provided at the bottom end of the positioning rod (14); A plurality of lower fixing rings (9) are fixedly provided on the surface of the lower support (2), and the inner wall of the lower fixing ring (9) is threadedly connected to the outer wall of the positioning tube (16); the inner top of the positioning tube (16) is a spherical surface, and the connecting ball (15) is rotatably connected to the spherical surface of the positioning tube (16); The axes of the positioning rod (14) and the positioning tube (16) are vertically arranged.

2. A railway bridge support structure according to claim 1, characterized in that: The bottom edge of the upper support (1) and the top edge of the lower support (2) are both provided with a curved surface (5), a rubber layer (10) is provided between the upper support (1) and the lower support (2), and a protective mechanism is provided on the outer wall of the rubber layer (10); The protective mechanism comprises two semi-annular protective shells (11), which are arranged on the outer periphery of the support and at a height located at the position of the rubber layer (10); the inner walls of the two protective shells (11) are both bonded with sealing rings (12).

3. A railway bridge support structure according to claim 2, characterized in that: Two symmetrical positioning strips (6) are fixedly provided on the outer walls of the upper support (1) and the lower support (2), and the protective shell (11) is located between the positioning strips (6).

4. A railway bridge support structure according to claim 3, characterized in that: The outer wall of the upper support (1) is fixedly provided with a plurality of fixing seats (7), the fixing seats (7) are rotatably connected with a rotating shaft (8), and the rotating shaft (8) is rollingly connected to the surface of the positioning rod (14).

5. The railway bridge support structure according to claim 4, characterized in that: A rubber pad (17) is provided at the contact position between the positioning tube (16) and the connecting ball (15).

6. The railway bridge support structure according to claim 5, characterized in that: The two protective shells (11) are fixedly connected by bolts.

7. The railway bridge support structure according to claim 6, characterized in that: The outer walls of the positioning rod (14) and the positioning tube (16) are both provided with mounting grooves (13).

8. The railway bridge support structure according to claim 7, characterized in that: A plurality of assembly holes (3) are provided on the surfaces of the upper support (1) and the lower support (2).

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