Bridge strain monitoring device

Abstract

This utility model provides a bridge strain monitoring device, relating to the field of bridge strain monitoring technology, including a device body; the device body is provided with an assembly support plate, the assembly support plate has a threaded hole running vertically through the middle, and the assembly support plate has fixing holes running vertically through the two ends. Reinforcing ribs are provided on both the left and right sides of the top end face of the assembly support plate. A strain gauge is installed inside the threaded hole of the assembly support plate via threads. The outer circumference of the strain gauge is threaded, and a regular hexagonal ring plate is provided on the outer circumference of the bottom of the strain gauge. A signal line is provided on the bottom end face of the strain gauge. This facilitates the strain gauge's connection to the bridge via threaded installation on the assembly support plate, and allows for easy rotation and disassembly of the strain gauge using tools. This solves the problem that the strain gauge is bolted to the support plate, making the strain gauge replacement process cumbersome and inconvenient to install an assembly structure on the strain gauge for quick replacement.

Description

Technical Field

[0001] This utility model belongs to the field of bridge strain monitoring technology, and in particular relates to a bridge strain monitoring device. Background Technology

[0002] Bridge strain monitoring devices are used to measure strain changes in bridge structures under load or environmental changes. They are mainly used to assess structural safety and monitor damage. By installing sensors in key areas, they monitor structural deformation and stress changes in real time, providing data support for bridge maintenance and safety assessment. Data is aggregated using microprocessors or edge gateways, and supports multiple acquisition modes such as continuous, triggered, and timed acquisition.

[0003] Based on the above, the inventors have discovered the following shortcomings in existing bridge strain monitoring devices:

[0004] 1. The strain gauge is bolted to the bearing plate, which makes the process of replacing the strain gauge cumbersome and inconvenient to set up an assembly structure on the strain gauge to enable quick replacement.

[0005] 2. The load-bearing frame is fixed to the bridge with bolts. The drilling process can easily reduce the strength of the bridge. It is inconvenient to add fixing measures to the load-bearing frame to achieve non-destructive fixing. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a bridge strain monitoring device. This addresses the issues of existing strain gauges being bolted to the bearing plate, resulting in a cumbersome replacement process and making it inconvenient to install assembly structures on the strain gauges for quick replacement; and the bearing frame being bolted to the bridge, where drilling can easily reduce bridge strength, making it inconvenient to add fixing measures to the bearing frame for non-destructive fixation.

[0007] The purpose and effectiveness of this utility model bridge strain monitoring device are achieved through the following specific technical means:

[0008] A bridge strain monitoring device includes a device body; the device body is provided with an assembly bearing plate, the assembly bearing plate has a threaded hole running vertically through the middle, and the assembly bearing plate has fixing holes running vertically through the two ends. The top end face of the assembly bearing plate is provided with reinforcing ribs on both the left and right sides. A strain gauge is installed inside the threaded hole of the assembly bearing plate by threads. The outer circumference of the strain gauge is threaded. A regular hexagonal ring plate is provided on the outer circumference of the bottom of the strain gauge. A signal line is provided on the bottom end face of the strain gauge. A strain force column is provided on the top end face of the strain gauge.

[0009] Furthermore, an assembly fixing post is inserted from bottom to top inside the fixing hole of the assembly bearing plate, a threaded post is provided on the upper part of the assembly fixing post, an anti-detachment ring plate is provided on the outer circumference of the bottom of the threaded post of the assembly fixing post, and a regular hexagonal prism is provided on the bottom end face of the threaded post of the assembly fixing post.

[0010] Furthermore, the top end face of the assembly bearing plate is equipped with assembly fixing plates at both the left and right ends via assembly fixing columns. The assembly fixing plates have threaded holes running vertically through the middle and strip holes running vertically through the front and rear directions at the front end.

[0011] Furthermore, the assembly fixing plate has upright plates on both the front and back of the top end face, and triangular plates on both the left and right sides of the outer end face of the upright plates. The front upright plate of the assembly fixing plate has a clamping screw hole that runs through the front and back.

[0012] Furthermore, a rotating locking rod is installed inside the clamping screw hole of the assembly fixing plate. The rotating locking rod has a thread on its outer circumference, a fixing post is provided on the rear end face of the rotating locking rod, and a regular hexagonal prism is provided on the front end face of the rotating locking rod.

[0013] Furthermore, a bridge clamping plate is mounted on the fixing column of the rotating locking rod via a bearing. The front end face of the bridge clamping plate has a bearing groove, and the bottom end face of the bridge clamping plate has a threaded blind hole in the middle.

[0014] Furthermore, a movable locking rod is installed inside the threaded blind hole of the bridge clamping plate. A threaded post is provided on the upper part of the movable locking rod, and a locking ring plate is provided on the outer circumference of the bottom of the threaded post of the movable locking rod. A regular hexagonal groove is opened on the bottom end face of the threaded post of the movable locking rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The strain gauge is conveniently mounted on the assembly bearing plate via threads, allowing it to contact the bridge. This facilitates easy rotation and disassembly of the strain gauge using tools, solving the problem of cumbersome replacement processes caused by bolted mounting of the strain gauge on the bearing plate, which made it inconvenient to set up an assembly structure on the strain gauge for quick replacement.

[0017] The convenient rotating locking rod is threaded onto the assembly fixing plate to support the bridge clamping plate. This facilitates the cooperation between the bridge clamping plate and the assembly fixing plate to clamp and fix the bridge. It solves the problem that fixing the load-bearing frame to the bridge with bolts can easily lead to a decrease in bridge strength during the drilling process, and it is inconvenient to add fixing measures to the load-bearing frame to achieve non-destructive fixing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0019] Figure 2 This is a bottom view of the structure of this utility model.

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 4 This is a disassembled structural diagram of the present invention.

[0022] Figure 5 This is an assembly diagram of the mounting plate and the movable locking rod of this utility model.

[0023] Figure 6 This is an assembly diagram of the rotary locking rod and bridge clamping plate of this utility model.

[0024] In the diagram: 1. Device body; 2. Assembled bearing plate; 3. Monitoring strain gauge; 4. Assembled fixing column; 5. Assembled fixing plate; 6. Rotary locking rod; 7. Bridge clamping plate; 8. Moving locking rod. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0026] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown:

[0027] This utility model provides a bridge strain monitoring device, including a device body 1; the device body 1 is provided with an assembly support plate 2 for easy support of various components. The assembly support plate 2 has a through-hole in the middle for easy installation of a strain gauge 3 via threads. Both ends of the assembly support plate 2 have through-hole fixing holes for easy insertion of assembly fixing posts 4. Reinforcing ribs are provided on both sides of the top end face of the assembly support plate 2 to enhance its load-bearing capacity. A strain gauge 3 is threaded into the bottom of the through-hole in the assembly support plate 2 for easy monitoring of bridge strain. The outer circumference of the strain gauge 3 is threaded for easy assembly and disassembly via threads. The bottom of the strain gauge 3... A regular hexagonal ring plate is provided around the circumference of the strain gauge 3 to facilitate the rotation and disassembly of the strain gauge 3 using tools. A signal line is provided on the bottom end face of the strain gauge 3 to facilitate connection with external equipment. A strain-bearing column is provided on the top end face of the strain gauge 3 to facilitate contact with the bridge and displacement under strain. An assembly fixing column 4 is inserted from bottom to top into the fixing hole of the assembly bearing plate 2 to facilitate locking and fixing the assembly fixing plate 5. A threaded column is provided on the upper part of the assembly fixing column 4 to facilitate installation on the assembly fixing plate 5 by threads. An anti-detachment ring plate is provided on the outer circumference of the bottom of the threaded column of the assembly fixing column 4 to facilitate anti-detachment of the assembly bearing plate 2. A regular hexagonal prism is provided on the bottom end face of the threaded column of the assembly fixing column 4 to facilitate the rotation and disassembly of the assembly fixing column 4 using tools.

[0028] The assembly mounting plate 2 has assembly fixing plates 5 installed on both the left and right ends of its top end face via assembly fixing columns 4, facilitating a proper fit with the bridge. Each assembly fixing plate 5 has a through-hole in the middle for threaded installation of the assembly fixing columns 4. The front end of the assembly fixing plate 5 has a through-hole in the front and back directions for inserting and moving the locking rod 8. The top end face of the assembly fixing plate 5 has upright plates on both the front and back, allowing the bridge structure to be housed internally. The outer ends of the upright plates of the assembly fixing plate 5 have triangular plates on both the left and right sides to enhance the load-bearing capacity of the assembly fixing plate 5. The front upright plate of the assembly fixing plate 5 has a through-hole in the middle for threaded installation of the rotating locking rod 6. The rotating locking rod 6 is installed inside the through-hole, allowing it to move through threaded engagement. The outer circumference of the rotating locking rod 6 is threaded for threaded installation. The rear end face of the rotating locking rod 6 has a fixing column. The bridge clamping plate 7 is installed via bearings. The front end face of the rotating locking rod 6 is provided with a regular hexagonal prism, which facilitates the rotation of the rotating locking rod 6 with tools. The bridge clamping plate 7 is installed on the fixed column of the rotating locking rod 6 via bearings, which facilitates the rotation of the rotating locking rod 6 to drive the bridge clamping plate 7 to move. The front end face of the bridge clamping plate 7 is provided with a bearing groove, which facilitates the installation of the rotating locking rod 6 via bearings. The bottom end face of the bridge clamping plate 7 is provided with a threaded blind hole, which facilitates the installation of the movable locking rod 8 via threads. The movable locking rod 8 is installed inside the threaded blind hole of the bridge clamping plate 7, which facilitates the movable locking rod 8 to lock the assembly fixing plate 5 to lock the bridge clamping plate 7. The upper part of the movable locking rod 8 is provided with a threaded post, which facilitates the installation of the movable locking rod 8 via threads. The outer circumference of the bottom of the threaded post of the movable locking rod 8 is provided with a locking ring plate, which facilitates contact and locking with the assembly fixing plate 5. The bottom end face of the threaded post of the movable locking rod 8 is provided with a regular hexagonal groove, which facilitates the rotation and disassembly of the movable locking rod 8 with tools.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In this utility model, such as Figure 1 As shown, the device body 1 is in the state when it is installed on the bridge. At this time, the bridge section is inside the assembly fixing plate 5, as shown in the figure. Figure 2As shown, the front end face of the rear upright plate of the assembly fixing plate 5 contacts the rear end face of the bridge section, the rear end face of the bridge clamping plate 7 contacts the front end face of the bridge section, and the top end face of the assembly fixing plate 5 contacts the bottom end face of the bridge section. This allows the device body 1 to be clamped and fixed to the bridge section through the cooperation of the assembly fixing plate 5 and the bridge clamping plate 7. Simultaneously, the locking rod 8 is moved to lock the assembly fixing plate 5, thus stopping the bridge clamping plate 7. This installation method of the device body 1 solves the problem that fixing the bearing frame to the bridge with bolts and drilling can easily lead to a decrease in bridge strength. Note that when the strain gauge 3 is installed on the assembly bearing plate 2 via threads, the top end face of the strain gauge 3 needs to contact the bottom end face of the bridge section, and the contact force of the strain gauge 3 should be zeroed. This facilitates communication... The strain gauge 3 is used to monitor the strain of the bridge. The signal line of the strain gauge 3 needs to be connected to an external data acquisition device. When replacing the strain gauge 3, the strain gauge 3 is rotated with a tool to engage with the threaded part of the assembly bearing plate 2. The strain gauge 3 is then lowered and disengaged from the threaded hole of the assembly bearing plate 2 through the thread engagement. Then, the contact surface of the bridge section is cleaned, and the new strain gauge 3 is screwed into the threaded hole of the assembly bearing plate 2 with a tool. The top end face of the strain gauge 3 is brought into contact with the bottom end face of the bridge section, and the contact force of the strain gauge 3 is reset to zero. Then, the signal line of the strain gauge 3 is connected to the external data acquisition device. This completes the replacement of the strain gauge 3 and solves the problem that the strain gauge is bolted to the bearing plate, which makes the replacement process of the strain gauge cumbersome.

[0031] Example 2: Unlike Example 1, the regular hexagonal prism of the assembly fixing column 4 can also be set as a regular heptagonal prism. This makes it necessary to use a special tool that works with the regular heptagonal prism to rotate the assembly fixing column 4, thus preventing non-staff members from rotating or disassembling the assembly fixing column 4.

[0032] Example 3: The difference from Example 1 is that the regular hexagonal groove of the movable locking rod 8 can also be set as a regular heptagonal groove, so that the movable locking rod 8 can only be rotated by a special tool that cooperates with the regular heptagonal groove, thus preventing non-workers from rotating and disassembling the movable locking rod 8.

Claims

1. A bridge strain monitoring device, characterized in that: The device includes a main body (1); the main body (1) is provided with an assembly support plate (2), the assembly support plate (2) has a threaded hole that runs through the middle, and the assembly support plate (2) has a fixing hole that runs through the middle at both ends. The top end face of the assembly support plate (2) is provided with reinforcing ribs on both the left and right sides. A monitoring strain gauge (3) is installed inside the threaded hole of the assembly support plate (2) by thread. The monitoring strain gauge (3) has a thread on its outer circumference. A regular hexagonal ring plate is provided on the bottom outer circumference of the monitoring strain gauge (3). A signal line is provided on the bottom end face of the monitoring strain gauge (3). A strain force column is provided on the top end face of the monitoring strain gauge (3).

2. The bridge strain monitoring device as described in claim 1, characterized in that: An assembly fixing post (4) is inserted from bottom to top into the fixing hole of the assembly bearing plate (2). A threaded post is provided on the upper part of the assembly fixing post (4). An anti-detachment ring plate is provided on the outer circumference of the bottom of the threaded post of the assembly fixing post (4). A regular hexagonal prism is provided on the bottom end face of the threaded post of the assembly fixing post (4).

3. The bridge strain monitoring device as described in claim 2, characterized in that: The top end face of the assembly bearing plate (2) is equipped with assembly fixing plates (5) at both ends through assembly fixing columns (4). The assembly fixing plate (5) has a threaded hole that runs through the middle and a strip hole that runs through the front and back directions.

4. The bridge strain monitoring device as described in claim 3, characterized in that: The assembly fixing plate (5) has upright plates on both the front and back of its top end face. Triangular plates are provided on both the left and right sides of the outer end face of the upright plate of the assembly fixing plate (5). A clamping screw hole that runs through the front and back is provided in the middle of the upright plate of the assembly fixing plate (5).

5. The bridge strain monitoring device as described in claim 4, characterized in that: The assembly fixing plate (5) has a rotating locking rod (6) installed inside the clamping screw hole. The rotating locking rod (6) has a thread on its outer circumference, a fixing post on its rear end face, and a regular hexagonal prism on its front end face.

6. The bridge strain monitoring device as described in claim 5, characterized in that: A bridge clamping plate (7) is mounted on the fixed column of the rotating locking rod (6) via a bearing. The front end face of the bridge clamping plate (7) is provided with a bearing groove, and the bottom end face of the bridge clamping plate (7) is provided with a threaded blind hole.

7. The bridge strain monitoring device as described in claim 6, characterized in that: The bridge clamping plate (7) has a movable locking rod (8) installed inside the threaded blind hole. The movable locking rod (8) has a threaded post on its upper part. The outer circumference of the bottom of the threaded post of the movable locking rod (8) has a locking ring plate. The bottom end face of the threaded post of the movable locking rod (8) has a regular hexagonal groove.

Images