A force-measuring tension / compression support

Abstract

This utility model relates to the field of tension and compression bearing technology, aiming to solve the problems of complex structural design of existing vertical force-measuring tension and compression bearings, the need for sensors to be assembled with pads, and the inconvenience of replacing tension sensors. It provides a force-measuring tension and compression bearing, including an upper support plate, a middle plate, a spherical crown liner, and a bottom plate. A boss is formed on the side of the middle plate, and the upper support plate is connected to the boss via a connector. A pressure sensor is disposed between the upper support plate and the middle plate. A tension sensor is disposed between the end of the connector and the bottom surface of the boss, and the tension sensor contacts the end of the connector and the bottom surface of the boss. This force-measuring tension and compression bearing has the function of measuring the vertical pressure and tension forces on the bearing. The structural design is simple, eliminating the need for redundant structures such as pads. The tension sensor is disposed between the end of the connector and the bottom surface of the boss in the middle plate, allowing for easy replacement of the tension sensor.

Description

Technical Field

[0001] This utility model relates to the field of tension and compression bearing technology, and more specifically, to a force-measuring tension and compression bearing. Background Technology

[0002] With the rapid development of infrastructure construction projects such as railways and highways in my country, a large number of bridges spanning rivers and seas are emerging. These bridges are primarily floating system bridges, such as suspension bridges and cable-stayed bridges. During operation, these bridges bear various loads, including their own weight, vehicle loads, wind loads, expansion and contraction caused by temperature changes, and dynamic loads such as earthquakes. Under the influence of these loads, significant vertical tensile forces are generated at certain supports of the bridge. To ensure the safety of the bridge, tension and compression bearings are installed at these supports to provide necessary vertical restraint and prevent excessive vertical displacement that could damage the bridge structure.

[0003] Tension-compression bearings can withstand both tensile and compressive forces simultaneously, ensuring the stability of bridges under various loads. By distributing loads and reducing stress concentration, tension-compression bearings can significantly reduce fatigue damage in critical bridge components, thereby extending the bridge's service life. For example, in suspension or cable-stayed bridges, tension-compression bearings can effectively transfer the tension of cables or stays while simultaneously bearing the pressure of the bridge deck, ensuring the overall balance of the bridge.

[0004] Currently, the most commonly used tension and compression bearings in the industry are spherical bearing structures such as side-bearing tension and compression bearings and center-bearing tension and compression bearings. These bearings can meet the basic functional requirements of bridges, but they lack the function of monitoring the tension and compression forces on the bearings.

[0005] Chinese invention patent CN120719594A discloses a vertical force-measuring tension / compression support and its usage method. The vertical force-measuring tension / compression support includes a pressure sensor pad and a pressure sensor between a lower support plate and a bottom support plate. The pressure sensor is placed in a groove on the pressure sensor pad and the bottom support plate. A flat non-metallic sliding plate is embedded in the lower surface of the pressure sensor pad. The upper flat non-metallic sliding plate embedded in the lower surface of the pressure sensor pad slides in cooperation with the upper flat stainless steel sliding plate attached to the upper surface of the bottom support plate, enabling smooth horizontal sliding of the pressure sensor pad. A tension sensor pad and a tension sensor are also provided between the bottom support plate limiting plate and the lower support plate boss at both ends of the bottom support plate. The tension sensor pad is fixed to the lower support plate boss and has multiple mounting grooves. The tension sensor is installed in the mounting grooves and in close contact with the bottom support plate limiting plate.

[0006] This type of vertical force-measuring tension / compression support has the following drawbacks: 1. The structural design is complex, and all sensors require mounting plates for assembly; 2. The tension sensor is installed in the mounting groove on the tension sensor pad, with its top surface in close contact with the bottom support plate limiting plate. With this installation, the tension sensor is not easy to disassemble and replace. It is necessary to use a jack to lift the main beam and remove the tension sensor pad and tension sensor before replacement. Utility Model Content

[0007] The present invention aims to provide a force-measuring tension / compression support to solve the problems of complex structural design of existing vertical force-measuring tension / compression supports, the need for sensors to be assembled with pads, and the inconvenience of replacing tension sensors.

[0008] This utility model is achieved using the following technical solution: This utility model provides a force-measuring tension and compression support, including an upper support plate, an intermediate plate, a spherical crown liner plate and a bottom plate. A boss is formed on the side of the intermediate plate, and the upper support plate and the boss are connected by a connector. A pressure sensor is provided between the upper support plate and the intermediate plate; A tension sensor is provided between the end of the connector and the bottom surface of the boss, and the tension sensor is in contact with the end of the connector and the bottom surface of the boss.

[0009] As a preferred technical solution: The intermediate plate is made of intermediate steel plate.

[0010] As a preferred technical solution: The bottom surface of the upper support plate and the top surface of the intermediate plate are both provided with grooves. The grooves on the upper support plate and the intermediate plate are positioned correspondingly. The pressure sensor is installed in the grooves of the upper support plate and the intermediate plate. The bottom surface of the pressure sensor is in contact with the intermediate plate, and the top surface of the pressure sensor is in contact with the upper support plate.

[0011] As a preferred technical solution: The side of the pressure sensor is in contact with the side wall of the groove.

[0012] As a preferred technical solution: A gap is provided between the upper support plate and the intermediate plate.

[0013] As a preferred technical solution: The pressure sensor is a weighing sensor.

[0014] As a preferred technical solution: The tension sensor is a ring-shaped tension sensor, which is sleeved on the rod of the connector.

[0015] As a preferred technical solution: The top side of the intermediate plate has the protrusion, and a plurality of the connectors are connected between the upper support plate and the protrusion. All the connectors are evenly arranged, and each connector is provided with a tension sensor. All the tension sensors are also evenly arranged.

[0016] As a preferred technical solution: One end of the connector passes through the boss and is connected to the upper support plate.

[0017] As a preferred technical solution: The connector is a connecting bolt, one end of which passes through the boss and is connected to the upper support plate. The annular tension sensor is sleeved on the threaded rod of the connecting bolt and is located between the bolt head and the boss.

[0018] As a preferred technical solution: The intermediate plate and the spherical crown liner form a rotating pair, and the spherical crown liner and the bottom plate form a sliding pair; An intermediate tie rod is provided between the intermediate plate and the spherical crown liner, with one end of the intermediate tie rod passing through the spherical crown liner and connected to the intermediate plate.

[0019] As a preferred technical solution: The intermediate tie bolt is a tensile bolt, and a threaded hole is provided on the intermediate plate. One end of the tensile bolt passes through the spherical crown liner and extends into the threaded hole to connect with the intermediate plate. The spherical crown liner can rotate relative to the tensile bolt and the intermediate plate.

[0020] As a preferred technical solution: A spherical sliding plate is provided between the intermediate plate and the spherical crown liner; A flat sliding plate is provided between the spherical crown liner and the base plate.

[0021] As a preferred technical solution: A stop block is fixedly connected to the top surface of the base plate, and a protrusion is formed on the side of the bottom of the spherical crown liner. The protrusion is limited within the stop block, and the top surface of the protrusion slides in cooperation with the stop block. The bottom surface of the spherical crown liner slides in cooperation with the top surface of the base plate.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This utility model incorporates a pressure sensor between the upper support plate and the intermediate steel plate to measure the vertical pressure exerted by the bridge on the support. A tension sensor is installed between the end of the connector and the bottom surface of the boss, with the tension sensor in contact with both the connector end and the boss bottom surface. When the support bears the vertical tension of the bridge, the connector bears the same vertical tension. The tension sensor measures the vertical tension exerted by the bridge on the support. This allows for real-time monitoring of the vertical pressure and tension on the support. This force-measuring tension-compression bearing possesses the function of measuring the vertical pressure and tension on the support, enabling real-time monitoring of the support's stress state, ensuring reliable service, and achieving monitoring throughout the support's entire life cycle. It provides data support for bridge health monitoring and maintenance, improving the safety and reliability of the bridge system.

[0023] 2. This utility model features a simple structural design, eliminating the need for redundant structures such as pads. Furthermore, by placing the tension sensor between the end of the connector and the bottom surface of the boss, the connector is easily disassembled, allowing for convenient replacement of the tension sensor without requiring beam jacking. Compared to existing technologies, this utility model offers a simpler, faster, and easier method for disassembling and replacing the tension sensor. The pressure sensor can also be replaced later, requiring beam jacking to unload the supports before replacement, thus meeting on-site replacement requirements.

[0024] 3. The pressure sensor and tension sensor of this utility model are arranged at the upper support plate and the middle steel plate, which does not affect the normal sliding and rotation functions of the lower structure of the support.

[0025] 4. The force-measuring tension-compression support of this utility model has the same basic structure as the traditional center-resistant tension-compression support (the difference is that the force-measuring tension-compression support of this utility model is equipped with a sensor). The force-measuring tension-compression support of this utility model has reasonable force distribution, mature manufacturing process, and high cost performance. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the force-measuring tension / compression support described in this utility model.

[0027] Figure 2 This is a schematic diagram of the installation of the pressure sensor and tension sensor described in this utility model.

[0028] Figure 3 This is a schematic diagram of the tensile sensor described in this utility model.

[0029] Icons: 1-Upper support plate, 2-Pressure sensor, 3-Tension sensor, 4-Intermediate steel plate, 401-Boss, 5-Tension bolt, 6-Spherical crown liner, 601-Protrusion, 7-Base plate, 8-Connecting bolt, 9-Stop block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Example 1 like Figures 1-3 As shown, this embodiment proposes a force-measuring tension-compression bearing, which includes an upper support plate 1, an intermediate steel plate 4, a spherical crown liner 6, and a bottom plate 7 arranged sequentially from top to bottom; A boss 401 is formed on the side of the top of the intermediate steel plate 4, and the upper support plate 1 is connected to the boss 401 by a connector; the intermediate steel plate 4 and the spherical crown liner 6 form a rotating pair, and the spherical crown liner 6 and the bottom plate 7 form a sliding pair; A pressure sensor 2 is provided between the upper support plate 1 and the intermediate steel plate 4; A tension sensor 3 is provided between the end of the connector and the bottom surface of the boss 401, and the tension sensor 3 is in contact with the end of the connector and the bottom surface of the boss 401.

[0032] With the above structure, this utility model sets a pressure sensor 2 between the upper support plate 1 and the middle steel plate 4 to measure the vertical pressure exerted by the bridge on the support. A tension sensor 3 is set between the end of the connector and the bottom surface of the boss 401, and the tension sensor 3 is in contact with the end of the connector and the bottom surface of the boss 401. When the support is subjected to the vertical tension of the bridge, the connector here is subjected to the same vertical tension. The tension sensor 3 measures the vertical tension exerted by the bridge on the support. In this way, the vertical pressure and tension on the support can be monitored in real time. The force-measuring tension-compression bearing of this utility model has the function of measuring the vertical pressure and tension on the support, and can monitor the stress state of the support in real time, ensuring the reliability of the support in service. It can realize the monitoring of the entire life cycle of the support, and can provide data support for the health monitoring and maintenance of the bridge, thereby improving the safety and reliability of the bridge system.

[0033] This invention features a simple structural design, eliminating the need for redundant structures such as pads. Furthermore, by placing the tension sensor 3 between the end of the connector and the bottom surface of the boss 401, the connector is easily disassembled, allowing for convenient replacement of the tension sensor 3 without requiring beam lifting. Compared to existing technologies, this invention offers a simpler, faster, and easier method for disassembling and replacing the tension sensor 3. The pressure sensor 2 can also be replaced later, requiring beam lifting to unload the supports before replacement, thus meeting on-site replacement requirements.

[0034] The pressure sensor 2 and tension sensor 3 of this utility model are arranged at the upper support plate 1 and the middle steel plate 4, which does not affect the normal sliding and rotation functions of the lower structure of the support.

[0035] The force-measuring tension-compression bearing of this utility model has the same basic structure as the traditional center-resistant tension-compression bearing (the difference is that the force-measuring tension-compression bearing of this utility model is equipped with a sensor). The force-measuring tension-compression bearing of this utility model has reasonable force distribution, mature manufacturing process, and high cost performance.

[0036] When the force-measuring tension-compression bearing of this utility model is under pressure, the pressure of the bridge is transmitted to the pressure sensor 2 through the upper bearing plate 1. The pressure sensor 2 can collect pressure data and output pressure data.

[0037] When the force-measuring tension-compression bearing of this utility model is under tension, the tension of the bridge is transmitted to the connector through the upper bearing plate 1, and then to the tension sensor 3 through the connector. The tension sensor 3 can collect tension data and output tension data.

[0038] Both the pressure sensor 2 and the tension sensor 3 are highly sensitive elements, capable of high-precision pressure and tension measurement, and rapid response to changes in force, meeting the needs of real-time monitoring and dynamic monitoring.

[0039] Preferably, a gap is provided between the upper support plate 1 and the intermediate steel plate 4 to ensure that the pressure is completely transmitted to the pressure sensor 2 and to ensure that the pressure sensor 2 measures the force accurately.

[0040] Preferably, the connecting member is a connecting bolt 8, one end of which passes through the boss 401 of the intermediate steel plate 4 and is connected to the upper support plate 1. The upper support plate 1 and the intermediate steel plate 4 are connected together by pre-tightening. The tension sensor 3 is a ring-shaped tension sensor, which is sleeved on the threaded rod of the connecting bolt 8 and confined between the bolt head of the connecting bolt 8 and the boss 401. This design not only facilitates the installation and disassembly of the tension sensor 3, but also facilitates the transmission of tension.

[0041] Preferably, a suitable annular tension sensor is selected based on the number and specifications of the connecting bolts 8, matching the tension parameters.

[0042] Preferably, a plurality of connectors are connected between the upper support plate 1 and the intermediate steel plate 4. All connectors are evenly arranged, and each connector is provided with a tension sensor 3. All tension sensors 3 are also evenly arranged.

[0043] Preferably, the bottom surface of the upper support plate 1 and the top surface of the intermediate steel plate 4 are both provided with grooves, and the grooves on the upper support plate 1 and the intermediate steel plate 4 are positioned correspondingly. The pressure sensor 2 is installed in the grooves of the upper support plate 1 and the intermediate steel plate 4, with the bottom surface of the pressure sensor 2 in contact with the intermediate steel plate 4 and the top surface of the pressure sensor 2 in contact with the upper support plate 1, ensuring uniform transmission of vertical pressure. Moreover, this design results in a compact structure.

[0044] Preferably, a suitable pressure sensor 2 can be selected according to the groove specifications of the upper support plate 1 and the intermediate steel plate 4.

[0045] Preferably, the pressure sensor 2 is tightly fitted into the groove of the upper support plate 1 and the intermediate steel plate 4, that is, the side of the pressure sensor 2 is fitted into the side wall of the groove, so as to ensure the transmission of horizontal force.

[0046] Preferably, the pressure sensor 2 and the tension sensor 3 are high-precision sensors to ensure the accuracy of the measurement data and monitor the support status in real time.

[0047] Preferably, the pressure sensor 2 is a weighing sensor, which has a simple structure, stable performance, and its external dimensions can be customized according to the support parameters. It is wear-resistant and corrosion-resistant and can be used in harsh environments.

[0048] Preferably, the tension sensor 3 is a ring-shaped tension sensor, which has high size matching and high stability. The material can be stainless steel, which can be used in harsh environments.

[0049] Preferably, the upper support plate 1 is connected to the bridge structure by bolts or anchors to transmit vertical bearing capacity and tensile force. The bottom plate 7 is connected to the pad stone structure by anchors to transmit vertical bearing capacity and tensile force.

[0050] Preferably, a spherical sliding plate is provided between the intermediate steel plate 4 and the spherical crown liner 6, allowing relative rotation between the intermediate steel plate 4 and the spherical crown liner 6 to achieve the rotation function of the support.

[0051] Preferably, a tensile bolt 5 is provided between the intermediate steel plate 4 and the spherical crown liner 6. The intermediate steel plate 4 has a threaded hole. One end of the tensile bolt 5 passes through the spherical crown liner 6 and extends into the threaded hole to connect with the intermediate steel plate 4. The spherical crown liner 6 can rotate relative to the tensile bolt 5 and the intermediate steel plate 4.

[0052] Preferably, a stop block 9 is fixedly connected to the top surface of the base plate 7, and a protrusion 601 is formed on the side of the bottom of the spherical crown liner 6. The protrusion 601 is limited within the stop block 9, and the top surface of the protrusion 601 is slidably engaged with the stop block 9. The bottom surface of the spherical crown liner 6 is slidably engaged with the top surface of the base plate 7. The protrusion 601 of the spherical crown liner 6 engages with the stop block 9, and the tensile force is transmitted through the stop block 9.

[0053] Preferably, the stop 9 is L-shaped.

[0054] Preferably, a flat sliding plate is provided between the spherical crown liner 6 and the base plate 7 to realize the sliding function of the support.

[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A force-measuring tension / compression bearing, comprising an upper support plate, an intermediate plate, a spherical crown liner, and a base plate, characterized in that: The side of the intermediate plate has a boss, and the upper support plate is connected to the boss by a connector. A pressure sensor is provided between the upper support plate and the intermediate plate; A tension sensor is provided between the end of the connector and the bottom surface of the boss, and the tension sensor is in contact with the end of the connector and the bottom surface of the boss.

2. The force-measuring tension / compression support according to claim 1, characterized in that: The bottom surface of the upper support plate and the top surface of the intermediate plate are both provided with grooves. The grooves on the upper support plate and the intermediate plate are positioned correspondingly. The pressure sensor is installed in the grooves of the upper support plate and the intermediate plate. The bottom surface of the pressure sensor is in contact with the intermediate plate, and the top surface of the pressure sensor is in contact with the upper support plate.

3. The force-measuring tension / compression support according to claim 2, characterized in that: The side of the pressure sensor is in contact with the side wall of the groove.

4. The force-measuring tension / compression support according to claim 2, characterized in that: A gap is provided between the upper support plate and the intermediate plate.

5. The force-measuring tension / compression support according to claim 2, characterized in that: The tension sensor is a ring-shaped tension sensor, which is sleeved on the rod of the connector.

6. The force-measuring tension / compression support according to claim 5, characterized in that: The top side of the intermediate plate has the protrusion, and a plurality of the connectors are connected between the upper support plate and the protrusion. All the connectors are evenly arranged, and each connector is provided with a tension sensor. All the tension sensors are also evenly arranged.

7. The force-measuring tension / compression support according to claim 5, characterized in that: One end of the connector passes through the boss and is connected to the upper support plate.

8. The force-measuring tension / compression support according to claim 7, characterized in that: The connector is a connecting bolt, one end of which passes through the boss and is connected to the upper support plate. The annular tension sensor is sleeved on the threaded rod of the connecting bolt and is located between the bolt head and the boss.

9. The force-measuring tension / compression support according to claim 1, characterized in that: The intermediate plate and the spherical crown liner form a rotating pair, and the spherical crown liner and the bottom plate form a sliding pair; A central tie rod is provided between the intermediate plate and the spherical crown liner, with one end of the central tie rod passing through the spherical crown liner and connected to the intermediate plate.

10. The force-measuring tension / compression support according to claim 9, characterized in that: A stop block is fixedly connected to the top surface of the base plate, and a protrusion is formed on the side of the bottom of the spherical crown liner. The protrusion is limited within the stop block, and the top surface of the protrusion slides in cooperation with the stop block. The bottom surface of the spherical crown liner slides in cooperation with the top surface of the base plate.

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