A bridge bearing slippage monitoring device

Abstract

This utility model relates to a bridge bearing slippage monitoring device, comprising: an upper bearing cover plate and a lower bearing cover plate; a left-side conversion component: one end of a first conversion steel wire is fixed to the left side of the upper bearing cover plate, passes sequentially around a first fixed pulley and a second fixed pulley fixed to the top surface of the pier, and the end is connected to a first lead block suspended on the surface of the pier; a right-side conversion component: one end of a second conversion steel wire is fixed to the right side of the upper bearing cover plate, passes around a third fixed pulley fixed to the top surface of the pier, and the end is connected to a second lead block suspended on the surface of the pier; when the upper bearing cover plate slips, the slippage is calculated by the vertical height difference between the first lead block and the second lead block. Compared with the prior art, this utility model has advantages such as improved safety, convenient operation, and optimized cost.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, and in particular to a bridge bearing slippage monitoring device. Background Technology

[0002] Bridge bearings are a crucial component connecting the superstructure and superstructure of a bridge. During operation, the upper cover plate of the bridge bearing will slip and deform relative to the lower cover plate and the pier to accommodate temperature changes. Whether the bearing slips and deforms normally within the design limits during operation is one of the issues that needs to be addressed during bridge operation and maintenance. Traditional techniques for monitoring the slippage of bridge bearings require using elevation surveying equipment to reach the bearing location and then having personnel measure it with a ruler, which is quite inconvenient.

[0003] Patent CN202411660832.6 discloses an automatic monitoring device for bridge bearing slippage, relating to the field of bridge inspection technology. The device includes a bridge pier, with a sliding component and a monitoring component fixedly connected to its outer surface. The monitoring component includes a mounting frame and a fixing rod. In this invention, a visual sensor and a displacement sensor can detect the slippage of the bridge bearing body in different directions using different methods as it rotates with the support ring. The annular convex lens has a thicker middle section and thinner edges, thus magnifying the main body of the bridge bearing. The convex lens further magnifies the real image formed by the annular convex lens, ensuring the final image is within the range captured by the visual sensor and appears as an upright dashed line. However, its structure is complex, installation and maintenance are difficult, and it relies on a power supply. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a bridge bearing slippage monitoring device that improves safety, ease of operation, and cost optimization.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A bridge bearing slippage monitoring device, comprising:

[0007] Upper cover plate and lower cover plate of the support;

[0008] Left-side conversion assembly: One end of the first conversion steel wire is fixed to the left side of the upper cover plate of the support, passes around the first fixed pulley and the second fixed pulley fixed to the top surface of the pier in sequence, and the end is connected to the first lead block suspended on the surface of the pier;

[0009] Right-side conversion assembly: One end of the second conversion steel wire is fixed to the right side of the upper cover plate of the support, passes around the third fixed pulley fixed to the top surface of the pier, and the end is connected to the second lead block suspended on the surface of the pier;

[0010] When the cover plate of the support slides, the amount of sliding is calculated by the vertical height difference between the first lead block and the second lead block.

[0011] Furthermore, the first fixed pulley, the second fixed pulley, and the third fixed pulley are fixed to the top surface of the bridge pier by pre-embedded bolts or welding.

[0012] Furthermore, the weights of the first lead block and the second lead block ensure that the first and second conversion wires are always under tension.

[0013] Furthermore, the surfaces of the first and second lead blocks are provided with scale marks or reflective markings for manual or optical instrument measurement of height differences.

[0014] Furthermore, the first and second conversion steel wires are high-strength steel wires with a diameter range of 1-5mm and are galvanized for rust prevention.

[0015] Furthermore, the sliding amount 'a' of the upper cover plate of the support and the height difference L between the first lead block and the second lead block satisfy the following relationship: sliding amount = L / 2.

[0016] Furthermore, the surface of the pier (8) is provided with a vertical scale for directly reading the positions of the first lead block and the second lead block.

[0017] Furthermore, it also includes a wireless transmission module, which connects to the elevation difference measurement device for real-time remote transmission of slip data.

[0018] Furthermore, the arrangement of the first and second fixed pulleys forms a double pulley system, which is used to amplify the moving distance of the first lead block.

[0019] Furthermore, dampers are provided at the bottom of the first and second lead blocks to reduce swaying errors caused by wind loads.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) Improved safety. By converting the slippage into a measurement of the height difference of lead blocks on the pier surface, personnel are no longer required to climb to the support position, reducing the risk of working at height.

[0022] (2) Ease of operation. The symmetrical pulley system and lead block system can be used to directly calculate the slippage by measuring only the vertical height difference of the lead blocks, which simplifies the operation process.

[0023] (3) Cost optimization. Compared with high-precision sensors, the use of mechanical structures (steel wire, pulleys, lead blocks) significantly reduces equipment costs and simplifies maintenance. Attached Figure Description

[0024] Figure 1 An elevation view of the first conversion steel wire of a bridge bearing slippage monitoring device;

[0025] Figure 2 An elevation view of the second conversion steel wire of a bridge bearing slippage monitoring device;

[0026] Figure 3 A cross-sectional layout diagram of a bridge bearing slippage monitoring device after installation;

[0027] Figure 4 This is a schematic diagram of a bridge bearing slippage monitoring device for monitoring leftward slippage of the bearing;

[0028] Figure 5 This is a schematic diagram of a bridge bearing slippage monitoring device for monitoring rightward slippage of the bearing;

[0029] Reference numerals in the attached diagram: 1. First conversion steel wire; 2. First fixed pulley; 3. Second fixed pulley; 4. First lead block; 5. Upper cover plate of the support; 6. Lower cover plate of the support; 7. Main beam; 8. Pier; 9. Second conversion steel wire; 10. Third fixed pulley; 11. Second lead block. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0031] Example 1

[0032] This embodiment provides a bridge bearing slippage monitoring device, such as... Figure 1-5 As shown, it includes:

[0033] Upper cover plate 5 and lower cover plate 6 of the support;

[0034] Left-side conversion assembly: One end of the first conversion steel wire 1 is fixed to the left side of the upper cover plate 5 of the support, passes around the first fixed pulley 2 and the second fixed pulley 3 fixed to the top surface of the pier 8 in sequence, and the end is connected to the first lead block 4 suspended on the surface of the pier.

[0035] Right-side conversion assembly: One end of the second conversion steel wire 9 is fixed to the right side of the upper cover plate 5 of the support, passes around the third fixed pulley 10 fixed to the top surface of the pier 8, and the end is connected to the second lead block 11 suspended on the surface of the pier.

[0036] When the upper cover plate 5 of the support slides, the amount of sliding is calculated by the vertical height difference between the first lead block 4 and the second lead block 11.

[0037] In a specific embodiment, the first fixed pulley 2, the second fixed pulley 3, and the third fixed pulley 10 are fixed to the top surface of the bridge pier 8 by pre-embedded bolts or welding.

[0038] In a specific embodiment, the weights of the first lead block 4 and the second lead block 11 ensure that the first conversion wire 1 and the second conversion wire 9 are always in a taut state.

[0039] In a specific embodiment, the surfaces of the first lead block 4 and the second lead block 11 are provided with scale marks or reflective markings for manual or optical instrument measurement of height difference.

[0040] In a specific embodiment, the first conversion steel wire 1 and the second conversion steel wire 9 are high-strength steel wires with a diameter range of 1-5mm and are galvanized for rust prevention.

[0041] In a specific embodiment, the sliding amount a of the upper cover plate 5 of the support and the height difference L between the first lead block 4 and the second lead block 11 satisfy the following relationship: sliding amount = L / 2.

[0042] In a specific embodiment, the surface of the bridge pier 8 is provided with a vertical scale for directly reading the positions of the first lead block 4 and the second lead block 11.

[0043] In a specific implementation, a wireless transmission module is also included, which is connected to the elevation difference measurement device for real-time remote transmission of slip data.

[0044] In a specific implementation, the arrangement of the first fixed pulley 2 and the second fixed pulley 3 forms a double pulley group, which is used to amplify the moving distance of the first lead block 4.

[0045] In a specific embodiment, the bottom of the first lead block 4 and the second lead block 11 is provided with a damper to reduce the swaying error caused by wind load.

[0046] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0047] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A bridge bearing slippage monitoring device, characterized in that, include: Upper cover plate (5) and lower cover plate (6) of the support; Left-side conversion assembly: One end of the first conversion steel wire (1) is fixed to the left side of the upper cover plate (5) of the support, passes around the first fixed pulley (2) and the second fixed pulley (3) fixed to the top surface of the pier (8) in sequence, and the end is connected to the first lead block (4) suspended on the surface of the pier. Right-side conversion assembly: One end of the second conversion steel wire (9) is fixed to the right side of the upper cover plate (5) of the support, passes around the third fixed pulley (10) fixed to the top surface of the pier (8), and the end is connected to the second lead block (11) suspended on the surface of the pier. When the upper cover plate (5) of the support slides, the amount of sliding is calculated by the vertical height difference between the first lead block (4) and the second lead block (11).

2. The bridge bearing slippage monitoring device according to claim 1, characterized in that, The first fixed pulley (2), the second fixed pulley (3), and the third fixed pulley (10) are fixed to the top surface of the pier (8) by pre-embedded bolts or welding.

3. The bridge bearing slippage monitoring device according to claim 1, characterized in that, The weights of the first lead block (4) and the second lead block (11) satisfy the condition that the first conversion wire (1) and the second conversion wire (9) are always in a taut state.

4. The bridge bearing slippage monitoring device according to claim 1, characterized in that, The first lead block (4) and the second lead block (11) have scale marks or reflective markings on their surfaces for measuring height differences manually or with optical instruments.

5. The bridge bearing slippage monitoring device according to claim 1, characterized in that, The first conversion wire (1) and the second conversion wire (9) are high-strength steel wires with a diameter range of 1-5 mm and are galvanized.

6. The bridge bearing slippage monitoring device according to claim 1, characterized in that, The sliding amount a of the upper cover plate (5) of the support and the height difference L between the first lead block (4) and the second lead block (11) satisfy the following relationship: sliding amount = L / 2.

7. The bridge bearing slippage monitoring device according to claim 1, characterized in that, The surface of the pier (8) is provided with a vertical scale for directly reading the position of the first lead block (4) and the second lead block (11).

8. The bridge bearing slippage monitoring device according to claim 1, characterized in that, It also includes a wireless transmission module, which connects to the elevation difference measurement device for real-time remote transmission of slip data.

9. A bridge bearing slippage monitoring device according to claim 1, characterized in that, The arrangement of the first fixed pulley (2) and the second fixed pulley (3) forms a double pulley system, which is used to amplify the moving distance of the first lead block (4).

10. A bridge bearing slippage monitoring device according to claim 1, characterized in that, The bottom of the first lead block (4) and the second lead block (11) are provided with dampers to reduce the swaying error caused by wind load.

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