Leveling device and method for assembling a bridge bearing

Abstract

The application discloses a leveling device and method for bridge support assembly and belongs to the technical field of bridge support assembly; the leveling device comprises a supporting frame, a conveyor and a pressure applying and leveling assembly; the pressure applying and leveling assembly applies pressure through a leveling oil cylinder, then height adjustment and state detection are realized with the help of the leveling oil cylinder and a distance sensor, and a pressure sensor is arranged between the leveling oil cylinder and a horizontal fixing plate to monitor pressure; manual operation is replaced by mechanical automation, the efficiency of bridge support assembly is remarkably improved, accurate measurement and control are realized through the sensor, human errors are avoided, leveling precision and assembly quality are improved, human cost and labor intensity are reduced, and reliable guarantee is provided for bridge support assembly.

Description

Technical Field

[0001] This invention relates to the field of bridge bearing assembly technology, specifically a leveling device and method for assembling bridge bearings. Background Technology

[0002] Bridge bearings are important structural components that connect the superstructure and substructure of a bridge. Located between the bridge and the bearing pad, they reliably transfer the loads and deformations borne by the superstructure to the substructure. They are important force transmission devices for bridges and typically include an upper bearing plate, a lower bearing plate, a spherical cap liner, and a wear-resistant plate between the spherical cap liner and the lower bearing plate.

[0003] During both transportation and installation, the upper and lower bearing plates of bridge bearings must remain horizontal and coaxial. Therefore, bridge bearings often require temporary fasteners for securing them during transportation to prevent the center point of the bearings from shifting due to bumps in the road.

[0004] However, before the temporary connectors are installed, the bridge bearings are assembled manually. A press is used to pre-press the bearings to eliminate any residual gaps between them. Vernier calipers are used to measure and check the height and parallelism deviations of the upper and lower bearing plates. If they are not parallel, the height difference needs to be repeatedly adjusted to ensure that the upper and lower bearing plates are level before the temporary connectors are installed and fixed. The entire leveling process mainly relies on manual measurement and adjustment, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The present invention aims to solve the above problems, thereby providing a leveling device and method for assembling bridge bearings.

[0006] The technical solution adopted by the present invention to solve the aforementioned problem is as follows: A leveling device for assembling bridge bearings includes a support frame, a conveyor, and a pressure leveling assembly. The conveyor is fixedly installed inside the lower part of the support frame for transporting and carrying the bridge bearings to be leveled. The pressure leveling assembly is installed inside the upper part of the support frame and includes a horizontal fixing plate fixed to the top crossbeam of the support frame and leveling cylinders fixed at the four corners of the bottom of the horizontal fixing plate for adjusting the height of the bridge bearings. The pressure leveling assembly also includes distance sensors installed on the outer sides of the four corners of the horizontal fixing plate, with the four distance sensors at the same height for detecting the height status of the top surface of the bridge bearings.

[0007] Furthermore, the distance sensor's output is vertically downward; accurately measuring the distance between it and the top surface of the bridge support.

[0008] Furthermore, a pressure sensor is installed between the leveling cylinder and the horizontal fixed plate to monitor the pressure applied to the bridge bearing by the pressure leveling component in real time.

[0009] A leveling method for a bridge bearing assembly leveling device is performed according to the following steps: S1. Preliminary assembly: Install the wear-resistant plate, the spherical crown liner, and the upper support plate sequentially above the lower support plate; S2, Leveling Preparation: The pre-assembled bridge supports are transferred to the pressure leveling components via a conveyor. S3, Support preload and elimination of residual gap: Start the leveling cylinder to move downwards, the leveling cylinder abuts against the top surface of the upper support plate, and apply pressure until the residual gap between the supports is eliminated. S4. Support Leveling: Set the overall pre-adjustment height of the bridge support to N, and the height difference between the output end of the distance sensor and the top surface of the conveyor to M. Power on the distance sensor. Based on the comparison between the measured distance and the set value, if the measured distance is less than H=MN, the leveling cylinder near the distance sensor on that side extends. If the measured distance is greater than H=MN, the leveling cylinder near the distance sensor on that side retracts until the measured distance is equal to H=MN. When the measured values ​​of all four distance sensors are equal to H=MN, the leveling work is completed. S5. Temporary connector fixing: Use temporary connectors to fix the upper support plate and the lower support plate.

[0010] Furthermore, in step S3, a pressure sensor installed between the leveling cylinder and the horizontal fixed plate monitors in real time the pressure applied to the bridge support by the pressure leveling component.

[0011] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art: This invention completes the transportation, preloading, and leveling of bridge bearings through mechanical automation. Compared with the traditional manual leveling process, which requires repeated manual adjustment and measurement of height differences, this device, through the cooperation of automated leveling cylinders and distance sensors, can quickly achieve bearing preloading, gap elimination, and precise leveling without repeated manual operation, greatly shortening the leveling time and significantly improving the work efficiency of bridge bearing assembly. Distance sensors can detect the height of the top surface of bridge bearings in real time and accurately, and precisely control the extension or retraction of the leveling cylinders based on the measurement results. Compared with manual measurement using vernier calipers, this automated measurement and adjustment method avoids human measurement errors, ensuring that the upper and lower bearing plates of the bridge bearings can maintain a horizontal and coaxial state with higher precision, thus improving the assembly quality of the bridge bearings. Traditional manual leveling relies mainly on human measurement and adjustment, which is not only time-consuming and labor-intensive, but also requires professional operators, resulting in high labor costs. This invention achieves automated operation, reduces human intervention, and lowers the dependence on manual operation. While saving labor costs, it also greatly reduces the labor intensity of operators. The pressure sensor installed between the leveling cylinder and the horizontal fixed plate can monitor the pressure applied to the bridge bearing by the pressure leveling component in real time, ensuring precise control of pressure during the bearing preloading process. This further guarantees the quality and stability of the bridge bearing assembly and provides reliable data support for the entire leveling process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention; Figure 2 This is a bottom view of the pressure leveling component according to an embodiment of the present invention; The components in the diagram are labeled as follows: 1. Support frame; 2. Conveyor; 3. Pressure leveling assembly; 4. Leveling cylinder; 5. Distance sensor. Detailed Implementation

[0013] The present invention will be further described below with reference to embodiments, which are intended only to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0014] See Figures 1-2 A leveling device for assembling bridge bearings includes a support frame 1, a conveyor 2, and a pressure-adjusting assembly 3. The conveyor 2 is fixedly installed inside the lower part of the support frame 1 for transporting and carrying the bridge bearings to be leveled. The pressure-adjusting assembly 3 is located inside the upper part of the support frame 1 and includes a horizontal fixing plate fixed to the top crossbeam of the support frame 1, and leveling cylinders 4 fixed to the four corners of the bottom of the horizontal fixing plate for adjusting the height of the bridge bearings. The pressure-adjusting assembly 3 also includes distance sensors 5 located at the four outer corners of the horizontal fixing plate, with all four distance sensors 5 positioned at the same height to detect the height status of the top surface of the bridge bearings. The output of distance sensor 5 points vertically downwards, accurately measuring the distance between it and the top surface of the bridge support. A pressure sensor is installed between the leveling cylinder 4 and the horizontal fixed plate to monitor the pressure applied to the bridge support by the pressure leveling component in real time. A leveling method for a bridge bearing assembly leveling device is performed according to the following steps: S1. Preliminary assembly: Install the wear-resistant plate, the spherical crown liner, and the upper support plate sequentially on top of the lower support plate. S2, Leveling preparation: The pre-assembled bridge supports are transferred to the pressure leveling components via conveyor 2. S3. Support preload and elimination of residual gap: Start the leveling cylinder 4 to move downwards, and the leveling cylinder 4 abuts against the top surface of the upper support plate, applying pressure until the residual gap between the supports is eliminated. S4. Support Leveling: Set the overall pre-adjusted height of the bridge support to N, and the height difference between the output end of distance sensor 5 and the top surface of conveyor 2 to M. Power on distance sensor 5. Based on the comparison between the measured distance and the set value, if the measured distance is less than H=MN, the leveling cylinder 4 closest to distance sensor 5 on that side extends. If the measured distance is greater than H=MN, the leveling cylinder 4 closest to distance sensor 5 on that side retracts until the measured distance is equal to H=MN. When the measured values ​​of all four distance sensors 5 are equal to H=MN, the leveling work is completed. S5. Temporary connector fixing: Use temporary connectors to fix the upper support plate and the lower support plate. In step S3, the pressure applied to the bridge support by the pressure leveling component 3 is monitored in real time by a pressure sensor installed between the leveling cylinder 4 and the horizontal fixed plate. This invention completes the transportation, preloading, and leveling of bridge bearings through mechanical automation. Compared with the traditional manual leveling process, which requires repeated manual adjustment and measurement of height differences, this device, through the cooperation of automated leveling cylinders and distance sensors, can quickly achieve bearing preloading, gap elimination, and precise leveling without repeated manual operation, greatly shortening the leveling time and significantly improving the work efficiency of bridge bearing assembly. Distance sensors can detect the height of the top surface of bridge bearings in real time and accurately, and precisely control the extension or retraction of the leveling cylinders based on the measurement results. Compared with manual measurement using vernier calipers, this automated measurement and adjustment method avoids human measurement errors, ensuring that the upper and lower bearing plates of the bridge bearings can maintain a horizontal and coaxial state with higher precision, thus improving the assembly quality of the bridge bearings. Traditional manual leveling relies mainly on human measurement and adjustment, which is not only time-consuming and labor-intensive, but also requires professional operators, resulting in high labor costs. This invention achieves automated operation, reduces human intervention, and lowers the dependence on manual operation. While saving labor costs, it also greatly reduces the labor intensity of operators. The pressure sensor installed between the leveling cylinder and the horizontal fixed plate can monitor the pressure applied to the bridge bearing by the pressure leveling component in real time, ensuring precise control of pressure during the bearing preloading process. This further guarantees the quality and stability of the bridge bearing assembly and provides reliable data support for the entire leveling process.

[0015] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A leveling device for assembling bridge bearings, characterized in that: The system includes a support frame, a conveyor, and a pressure-adjusting and leveling assembly. The conveyor is fixedly installed inside the lower part of the support frame and is used to transport and carry the bridge bearings to be leveled. The pressure-adjusting and leveling assembly is installed inside the upper part of the support frame and includes a horizontal fixing plate fixed to the top crossbeam of the support frame and leveling cylinders fixed at the four corners of the bottom of the horizontal fixing plate for adjusting the height of the bridge bearings. The pressure-adjusting and leveling assembly also includes distance sensors installed at the four outer corners of the horizontal fixing plate. The four distance sensors are at the same height and are used to detect the height status of the top surface of the bridge bearings.

2. The leveling device for assembling bridge bearings according to claim 1, characterized in that: The output of the distance sensor points vertically downwards.

3. The leveling device for assembling bridge bearings according to claim 1, characterized in that: A pressure sensor is installed between the leveling cylinder and the horizontal fixed plate.

4. A leveling method based on the bridge bearing assembly leveling device according to any one of claims 1-3, characterized in that, Follow these steps: S1. Preliminary assembly: Install the wear-resistant plate, the spherical crown liner, and the upper support plate sequentially above the lower support plate; S2, Leveling Preparation: The pre-assembled bridge supports are transferred to the pressure leveling components via a conveyor. S3, Support preload and elimination of residual gap: Start the leveling cylinder to move downwards, the leveling cylinder abuts against the top surface of the upper support plate, and apply pressure until the residual gap between the supports is eliminated. S4. Support Leveling: Set the overall pre-adjustment height of the bridge support to N, and the height difference between the output end of the distance sensor and the top surface of the conveyor to M. Power on the distance sensor. Based on the comparison between the measured distance and the set value, if the measured distance is less than H=MN, the leveling cylinder near the distance sensor on that side extends. If the measured distance is greater than H=MN, the leveling cylinder near the distance sensor on that side retracts until the measured distance is equal to H=MN. When the measured values ​​of all four distance sensors are equal to H=MN, the leveling work is completed. S5. Temporary connector fixing: Use temporary connectors to fix the upper support plate and the lower support plate.

5. The leveling method of the bridge bearing assembly leveling device according to claim 4, characterized in that: In step S3, the pressure applied to the bridge support by the pressure leveling component is monitored in real time by a pressure sensor installed between the leveling cylinder and the horizontal fixed plate.

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