Bridge support unloading block

Abstract

This utility model relates to a bridge support unloading block, which includes an upper support, a lower support, a left support, a right support, a tie rod assembly, limiting supports installed in the middle of the upper support and the middle of the lower support, and a double-ended screw nut assembly passing through the limiting supports. It also includes: an upper corner bracket, which is inverted L-shaped and installed on the outer surface of the upper support, with its top plate flush with the top surface of the upper support; and a lower corner bracket, which is L-shaped and installed on the outer surface of the lower support, with its bottom plate flush with the bottom surface of the lower support. The lower and upper supports are stacked vertically, with the bottom plate of the lower corner bracket overlapping the top plate of the upper corner bracket, and connected by a first bolt nut assembly. A first through hole is formed on the sliding wedge surface of the upper lower support, through which the screw of the lower double-ended screw nut assembly passes; a second through hole is formed on the sliding wedge surface of the lower upper support, through which the upper double-ended screw nut assembly passes. This utility model can increase the unloading height of the bridge support unloading block.

Description

Technical Field

[0001] This utility model relates to the field of bridge support unloading blocks, and more particularly to a bridge support unloading block. Background Technology

[0002] For example, Chinese Utility Model Patent Publication No. CN219080085U discloses a bridge cap beam pin-bar support, including pins and brackets. The pins are a pair, longitudinally inserted into the reserved holes of the piers, and the brackets are symmetrically installed at the front and rear ends of the pins. Unloading blocks are set on the brackets. Steel main beams are erected on the unloading blocks on the front and rear sides of the two adjacent piers under each cap beam. Several distribution beams are placed longitudinally and horizontally on the top surface of the steel main beams, and bottom molds are placed on the distribution beams. The unloading blocks include upper, lower, left, and right wedges. The left and right wedges are sandwiched between the upper and lower wedges and slide with the upper and lower wedges respectively. A second through hole is opened in the middle of the left and right wedges, and a fine-rolled threaded steel bar is inserted in the second through hole. The fine-rolled threaded steel bar passes through the left and right wedges and is screwed with nuts at both ends. It typically uses only the installation height of a single detachment block. However, due to the limited detachment height of a single detachment block, it is not convenient to reserve enough space under the bridge to dismantle the distribution beams and Bailey bridge platforms and other support systems on the detachment block, which can easily make dismantling difficult and affect dismantling efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bridge support unloading block that can be stacked vertically and used in a cross manner, so that two unloading blocks can be stacked to increase the unloading height, so as to leave enough space under the bridge for disassembling the support system, which is beneficial to improving the disassembly efficiency.

[0004] To address the aforementioned issues, a bridge support unloading block is employed, comprising an upper support, a lower support, a left support, a right support, a tie rod assembly passing through the left and right supports, a limiting support installed at the middle of the upper and lower supports, and a double-ended screw nut assembly passing through the limiting support. It also includes: The upper corner bracket is installed in an inverted L-shape on the outer side of the upper support, with its top plate flush with the top surface of the upper support. The lower corner bracket is L-shaped and installed on the outer side of the lower support, with its base plate flush with the bottom surface of the lower support. When the lower support and the upper support are stacked vertically and intersect each other, the bottom plate of the lower corner bracket and the top plate of the upper corner bracket overlap and are connected by a first bolt and nut assembly. A first through hole is opened on the sliding wedge surface of the upper lower support, through which the screw of the lower double-ended screw and nut assembly passes. A second through hole is opened on the sliding wedge surface of the lower upper support, through which the upper double-ended screw and nut assembly passes.

[0005] With this structure, the bridge support unloading blocks can be stacked vertically and fixed in a crosswise manner. During operation, the lower bridge support unloading blocks are unloaded first to allow the support system to be stably separated from the bridge bottom, thus completing the bridge section conversion support operation. After the load of the bridge section is transferred to the pier, the double-headed screw nut assembly of the lower bridge support unloading blocks is then removed to avoid affecting the unloading of the upper bridge support unloading blocks. Finally, the upper bridge support unloading blocks are unloaded. The first and second through holes facilitate the removal of the screws of the double-headed screw nut assembly.

[0006] As a further improvement of this utility model, the double-ended screw and nut assembly includes a double-ended screw that passes through the limiting support, and a nut that is threaded to the upper and lower ends of the double-ended screw and tightened on the limiting support.

[0007] With this structure, the double-headed screw facilitates the stable unloading of the bridge support blocks.

[0008] As a further improvement of this utility model, when the bottom surface of the lower support is not stacked on the upper support, the lower base surface is installed on the base plate. Multiple positioning ribs are welded on the base plate. The positioning ribs are inserted into the lower corner brackets of the lower support and tightened with positioning nuts. The base plate is installed on the pad at the upper end of the steel pipe column. The base plate and the pad are connected by a second bolt and nut assembly.

[0009] This structure facilitates the installation of bridge support unloading blocks on the steel pipe columns.

[0010] As a further improvement of this utility model, the limiting support is ring-shaped.

[0011] With this structure, the ring has the properties of an arched structure, which provides good stability, and the hollow ring also saves materials.

[0012] As a further improvement of this utility model, when the top surface of the upper support is not stacked under the lower support as the upper base surface, the upper base surface is connected to the lower flange of the double-I-beam through a third bolt and nut assembly.

[0013] This structure ensures a stable connection between the bridge support slab and the distribution beam made of double-I-beams.

[0014] This utility model can be stacked vertically and used in a cross manner, thereby enabling two unloading blocks to be stacked to increase the unloading height and leave enough space under the bridge for disassembling the support system, which helps to improve disassembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0016] Figure 2 This is a schematic diagram of the installation structure of the steel pipe column and distribution beam in an embodiment.

[0017] Figure 3 This is a schematic diagram of the installation structure of the steel pipe column in the example.

[0018] Figure 4 This is an example of the installation structure of the distribution beam.

[0019] Reference numerals: 1. Upper support; 2. Lower support; 3. Left support; 4. Right support; 5. Limiting support; 6. Double-ended screw and nut assembly; 7. Upper corner bracket; 8. Lower corner bracket; 9. First bolt and nut assembly; 10. First through hole; 11. Second through hole; 12. Base plate; 13. Positioning rib; 14. Positioning nut; 15. Steel pipe column; 16. Pad plate; 17. Second bolt and nut assembly; 18. Double-jointed I-beam; 19. Third bolt and nut assembly; 20. Tie rod assembly. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1 like Figures 1-4As shown, a bridge support unloading block includes an upper support 1, a lower support 2, a left support 3, a right support 4, a tie rod assembly 20 passing through the left support 3 and the right support 4, a limiting support 5 installed in the middle of the upper support 1 and the middle of the lower support 2, and a double-ended screw nut assembly 6 passing through the limiting support 5. The block is characterized by further including: The upper corner code 7 is installed in an inverted L shape on the outer side of the upper support 1, and its top plate is flush with the top surface of the upper support 1. The lower corner bracket 8 is L-shaped and installed on the outer side of the lower support 2, with its base plate flush with the bottom surface of the lower support 2. When the lower support 2 and the upper support 1 are stacked vertically and intersect each other, the bottom plate of the lower corner bracket 8 and the top plate of the upper corner bracket 7 overlap and are connected by the first bolt and nut assembly 9. A first through hole 10 is opened on the sliding wedge surface of the upper lower support 2, through which the screw of the lower double-headed screw nut assembly 6 passes. A second through hole 11 is opened on the sliding wedge surface of the lower upper support 1, through which the upper double-headed screw nut assembly 6 passes.

[0023] With this structure, the bridge support unloading blocks can be stacked vertically and fixed in a cross position. During operation, the lower bridge support unloading blocks are unloaded first to allow the support system to be stably separated from the bridge bottom, thus completing the bridge section conversion support operation. After the load of the bridge section is transferred to the pier, the double-headed screw nut assembly 6 of the lower bridge support unloading blocks is then removed to avoid affecting the unloading of the upper bridge support unloading blocks. Finally, the upper bridge support unloading blocks are unloaded. The first through hole 10 and the second through hole 11 facilitate the removal of the screw of the double-headed screw nut assembly 6.

[0024] In this embodiment, the double-ended screw and nut assembly 6 includes a double-ended screw that passes through the limiting support 5, and a nut that is threaded to the upper and lower ends of the double-ended screw and tightened on the limiting support 5.

[0025] With this structure, the double-headed screw facilitates the stable unloading of the bridge support blocks.

[0026] In this embodiment, when the bottom surface of the lower support 2 is not stacked on the upper support 1 as the lower base surface, the lower base surface is installed on the base plate 12. Multiple positioning ribs 13 are welded on the base plate 12. The positioning ribs 13 are inserted into the lower corner brackets 8 of the lower support 2 and tightened with positioning nuts 14. The base plate 12 is installed on the pad 16 at the upper end of the steel pipe column 15. The base plate 12 and the pad 16 are connected by the second bolt and nut assembly 17.

[0027] This structure facilitates the installation of bridge support unloading blocks on the steel pipe column 15.

[0028] In this embodiment, the limiting support 5 is ring-shaped.

[0029] With this structure, the ring has the properties of an arched structure, which provides good stability, and the hollow ring also saves materials.

[0030] In this embodiment, when the top surface of the upper support 1 is not stacked under the lower support 2 as the upper base surface, the upper base surface is connected to the lower flange of the double-I-beam 18 through the third bolt and nut assembly 19.

[0031] This structure ensures a stable connection between the bridge support unloading block and the distribution beam made of double-I-beam 18.

[0032] This utility model can be stacked vertically and used in a cross manner, thereby enabling two unloading blocks to be stacked to increase the unloading height and leave enough space under the bridge for disassembling the support system, which helps to improve disassembly efficiency.

[0033] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, achieving the same performance or purpose, should be considered within the protection scope of the present invention.

Claims

1. A bridge support unloading block, comprising an upper support (1), a lower support (2), a left support (3), a right support (4), a tie rod assembly (20) passing through the left support (3) and the right support (4), a limiting support (5) installed in the middle of the upper support (1) and the middle of the lower support (2), and a double-ended screw nut assembly (6) passing through the limiting support (5), characterized in that... Also includes: The upper corner bracket (7) is installed in an inverted L shape on the outer side of the upper support (1), and its top plate is flush with the top surface of the upper support (1); The lower corner bracket (8) is L-shaped and installed on the outer side of the lower support (2), with its bottom plate flush with the bottom surface of the lower support (2); When the lower support (2) and the upper support (1) are stacked vertically, the bottom plate of the lower corner bracket (8) and the top plate of the upper corner bracket (7) overlap and are connected by the first bolt and nut assembly (9). A first through hole (10) is opened on the sliding wedge surface of the upper lower support (2), through which the screw of the lower double-headed screw nut assembly (6) passes. A second through hole (11) is opened on the sliding wedge surface of the lower upper support (1), through which the upper double-headed screw nut assembly (6) passes.

2. The bridge support unloading block according to claim 1, characterized in that... The double-ended screw and nut assembly (6) includes a double-ended screw that passes through the limiting support (5) and a nut that is threaded to the upper and lower ends of the double-ended screw and tightened on the limiting support (5).

3. The bridge support unloading block according to claim 1, characterized in that... When the bottom surface of the lower support (2) is not stacked on the upper support (1), the lower base surface is installed on the base plate (12). Multiple positioning ribs (13) are welded on the base plate (12). The positioning ribs (13) are inserted into the lower corner brackets (8) of the lower support (2) and tightened with positioning nuts (14). The base plate (12) is installed on the pad (16) at the upper end of the steel pipe column (15). The base plate (12) and the pad (16) are connected by the second bolt and nut assembly (17).

4. The bridge support unloading block according to claim 1, characterized in that... The limiting support (5) is ring-shaped.

5. The bridge support unloading block according to claim 3, characterized in that... When the top surface of the upper support (1) is not stacked under the lower support (2), the upper base surface is connected to the lower flange of the double-I-beam (18) through the third bolt and nut assembly (19).

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