A widening structure for old bridge of highway bridge

Abstract

The utility model relates to old bridge widening structure technical field, concretely is a kind of old bridge widening structure suitable for highway bridge, it has the characteristics of improving practicability, including old bridge and old road surface, new bridge and new road board, the outer surface of old bridge and new bridge is all sleeved with the fixed ring for fixed, several fixed rings are respectively provided with the clamping frame and transverse plate that can be clamped and set in the end of each other, and the fixed ring includes inner side, and the sidewall on the inner side is provided with mounting groove, and mounting block is slidably installed in mounting groove, and the one end of mounting block is provided with the clamping ring for clamping old bridge or new bridge;When using, the model of clamping ring has multiple, clamps different model old bridge and new bridge.

Description

Technical Field

[0001] This utility model relates to the technical field of widening structures for old bridges, specifically a widening structure for old highway bridges. Background Technology

[0002] Many early highway bridges, due to their low design standards and insufficient traffic capacity, can no longer meet the needs of modern transportation. Therefore, widening and renovating old bridges has become an important means to improve road traffic capacity and ensure traffic safety. The selection of a widening scheme for old bridges should comprehensively consider factors such as the existing condition of the bridge, traffic demand, construction conditions, and economic costs.

[0003] Chinese Utility Model Publication No. CN222834765U discloses a widening structure for old highway bridges, including an old bridge. A limiting ring for fixing is sleeved on the outer surface of the old bridge. A connecting frame is fixedly connected to the side of the limiting ring. A horizontal plate for support is clamped to the inner wall of the frame. A ring is fixedly connected to one end of the horizontal plate. A new bridge is clamped to the inner wall of the ring. A chassis is sleeved on the bottom of the new bridge. A ground-drilling structure for limiting is fixedly installed on the bottom of the chassis.

[0004] This device uses a combination of limiting rings and circular rings to clamp onto old and new bridges, making it suitable for fixing old and new bridges at different distances. However, the diameters of the old and new bridges differ depending on the width and weight of the old and new road surfaces. In practice, different widths of new road surfaces are often installed on one side of the old road surface, resulting in different diameters for the installed new bridges. The limiting rings and circular rings of this device cannot adjust their inner diameters according to the diameters of the old and new bridges to facilitate clamping, thus limiting its practicality and leaving room for improvement. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, this utility model provides a bridge widening structure suitable for highway bridges, which has the feature of improving practicality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a bridge widening structure suitable for highway bridges, comprising an old bridge and an old road surface, a new bridge and a new road slab, wherein the outer surfaces of the old bridge and the new bridge are fitted with fixing rings for fixation, and several fixing rings are respectively provided with a clamping frame and a cross plate that can be snapped together at one end of each other, the fixing rings include an inner side surface, and an installation groove is provided on the side wall of the inner side surface, in which an installation block is slidably installed up and down, and one end of the installation block is provided with a clamping ring for clamping the old bridge or the new bridge; in use, there are various types of clamping rings to clamp different types of old bridges and new bridges.

[0009] Furthermore, the mounting groove is a slot, and the lower part of the slot penetrates the lower end face of the fixing ring, while the upper end face of the slot is lower than the upper end face of the fixing ring.

[0010] Furthermore, the slot includes a first slot body, a second slot body is provided in the middle of the first slot body, and one end of the second slot body penetrates the inner wall of the fixing ring. The width of the second slot body is smaller than the width of the first slot body.

[0011] Furthermore, the mounting block includes a plate body one that slides up and down in a groove body one, and a plate body two that slides up and down in a groove body two, with the plate body two and the clamping ring fixedly arranged together.

[0012] Preferably, the upper and lower end faces of the clamping ring are flush with the upper and lower end faces of the fixing ring.

[0013] Preferably, the bottom of the new bridge is fitted with a chassis, and the bottom of the chassis is fixedly equipped with a drilling structure for limiting positioning.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a bridge widening structure suitable for highway bridges, which has the following beneficial effects:

[0016] This bridge widening structure, applicable to highway bridges, allows for the installation of clamping rings of different sizes on the inner side of the fixing ring through the installation methods of plate one and trough one, and plate two and trough two. This facilitates the clamping and fixing of old and new bridges of the corresponding diameter, thus improving practicality to a certain extent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an enlarged structural schematic diagram of the fixing ring of this utility model;

[0019] Figure 3 This is an enlarged structural schematic diagram of the clamping ring, plate one, and plate two of this utility model;

[0020] Figure 4 This is an enlarged structural diagram of another model of the clamping ring, plate one, and plate two of this utility model.

[0021] In the diagram: 1. Old bridge; 2. Old road surface; 3. New bridge; 4. New road slab; 5. Fixing ring; 6. Frame; 7. Horizontal plate; 8. Clamping ring; 9. Trench 1; 10. Trench 2; 11. Plate 1; 12. Plate 2; 13. Chassis. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model discloses a bridge widening structure for highway bridges, comprising an old bridge 1 and an old road surface 2, a new bridge 3 and a new road slab 4. The outer surfaces of the old bridge 1 and the new bridge 3 are fitted with fixing rings 5 ​​for fixing. One side of the fixing ring 5 is provided with a threaded hole and a bolt is threaded thereon. Several fixing rings 5 ​​are fitted onto the outer surfaces of the old bridge 1 and the new bridge 3, and then the bolts are screwed into the threaded holes of the several mutually aligned fixing rings 5 ​​to fix the fixing rings 5 ​​onto the old bridge 1 and the new bridge 3.

[0024] Several fixing rings 5 ​​are respectively provided with a locking frame 6 and a horizontal plate 7 at one end that are close to each other. Adjust the distance of the horizontal plate 7 into the locking frame 6 and adjust the spacing between the fixing rings 5 ​​on both sides. The side of the locking frame 6 is provided with a limiting hole for connection, and the side of the limiting hole is threaded with a screw for fastening.

[0025] The fixing ring 5 includes an inner side surface, on which an installation groove is provided. An installation block is slidably installed in the installation groove. The operator aligns the upper end of the installation block with the lower part of the installation groove, and then installs the installation block from bottom to top in the installation groove. One end of the installation block is provided with a clamping ring 8 for clamping the old bridge 1 or the new bridge 3. When the installation block is installed in the installation groove, the clamping ring 8 is installed on the inner side surface of the fixing ring 5. In use, there are various models of clamping ring 8 to clamp different models of old bridge 1 and new bridge 3. This makes it convenient to install old bridge 1 and new bridge 3 of corresponding diameter according to the actual size of the old road surface 2 and the new road slab 4. By installing different models of clamping ring 8 on the fixing ring 5, old bridge 1 and new bridge 3 of different diameters can be clamped and fixed, which improves practicality to a certain extent.

[0026] The mounting groove is a slot, and the lower part of the slot penetrates the lower end face of the fixing ring 5, so that the mounting block is installed into the slot from bottom to top. The clamping force of the slot on the mounting block fixes the clamping ring 8 to the inner side of the fixing ring 5. The upper end face of the slot is lower than the upper end face of the fixing ring 5, so that the upper part of the slot will not penetrate the upper part of the fixing ring 5. During the clamping and fixing, the downward gravity generated by the fixing ring 5 is distributed on the mounting block from left to right. The mounting block generates an upward lifting force on the fixing ring 5, avoiding the risk of the fixing ring 5 falling off the clamping ring 8.

[0027] The slot includes a slot 9, a slot 10 in the middle of the slot 9, and one end of the slot 10 penetrates the inner wall of the fixing ring 5. The width of the slot 10 is smaller than the width of the slot 9. The mounting block includes a plate 11 that slides up and down in the slot 9 and a plate 12 that slides up and down in the slot 10. The plate 12 and the clamping ring 8 are fixed together. When the plate 11 moves in the slot 9, the plate 12 moves in the slot 10, thus preventing the plate 11 from entering the slot 10.

[0028] The upper and lower end faces of the clamping ring 8 are flush with the upper and lower end faces of the fixing ring 5, which makes it easy for the fixing ring 5 to provide full compressive force to the clamping ring 8.

[0029] The bottom of the new bridge 3 is fitted with a chassis 13, and a drilling structure for limiting the position is fixedly installed on the bottom of the chassis 13. The drilling structure is inserted into the ground to support the chassis 13, thereby supporting the new bridge 3.

[0030] In summary, this bridge widening structure, applicable to highway bridges, requires the selection of appropriate clamping rings 8 based on the diameter of the old bridge 1 and the new bridge 3. Workers align the upper end of the mounting block with the lower part of the mounting groove, then install the mounting block from bottom to top into the groove. At this time, plate 11 moves within groove 9, and plate 12 moves within groove 10, while preventing plate 11 from entering groove 10. Once the mounting block is in place, the clamping ring 8 is located on the inner side of the fixing ring 5, with its upper and lower end faces flush with those of the fixing ring 5. This allows the fixing ring 5 to provide comprehensive compressive force to the clamping ring 8, ensuring the clamping ring 8 firmly holds the old bridge 1 or the new bridge 3. After the threaded holes of several fixing rings 5 ​​are aligned, bolts are screwed into the aligned threaded holes and tightened to secure the fixing rings 5 ​​firmly to the old bridge 1 and the new bridge 3.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge widening structure suitable for highway bridges, comprising an old bridge (1) and an old road surface (2), a new bridge (3) and a new road slab (4), characterized in that: The outer surfaces of both the old bridge (1) and the new bridge (3) are fitted with fixing rings (5) for fixing. Several fixing rings (5) are respectively provided with a snap-fit ​​frame (6) and a cross plate (7) at one end of each other. The fixing ring (5) includes an inner side, and an installation groove is provided on the side wall of the inner side. An installation block is slidably installed in the installation groove. One end of the installation block is provided with a clamping ring (8) for clamping the old bridge (1) or the new bridge (3). When in use, there are various models of clamping rings (8) to clamp different models of old bridges (1) and new bridges (3).

2. The bridge widening structure for highway bridges according to claim 1, characterized in that: The mounting groove is a slot, and the lower part of the slot penetrates the lower end face of the fixing ring (5), while the upper end face of the slot is lower than the upper end face of the fixing ring (5).

3. The bridge widening structure for highway bridges according to claim 2, characterized in that: The slot includes a first slot (9), a second slot (10) is provided in the middle of the first slot (9), and one end of the second slot (10) penetrates the inner wall of the fixing ring (5). The width of the second slot (10) is smaller than the width of the first slot (9).

4. The bridge widening structure for highway bridges according to claim 3, characterized in that: The mounting block includes a plate (11) that slides up and down in a groove (9) and a plate (12) that slides up and down in a groove (10). The plate (12) and the clamping ring (8) are fixed together.

5. The bridge widening structure for highway bridges according to claim 4, characterized in that: The upper and lower end faces of the clamping ring (8) are flush with the upper and lower end faces of the fixing ring (5).

6. The bridge widening structure for highway bridges according to claim 1, characterized in that: The bottom of the new bridge (3) is fitted with a chassis (13), and the bottom of the chassis (13) is fixedly equipped with a drilling structure for limiting position.

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