Steel arch bridge sling tension monitoring device

Abstract

This utility model relates to the field of bridge monitoring technology, specifically a tension monitoring device for steel arch bridge suspension cables, including a pressure sensor, a mounting frame, and a connecting frame. The pressure sensor is disposed inside the mounting frame and contacts its inner top. The bottom of the pressure sensor has a mounting plate for fixing the pressure sensor during use. The connecting frame is sleeved on the outside of the mounting frame and connected to the mounting plate. This utility model, by sleeved on the outside of the mounting frame and using the mounting plate to limit the connection frame from the inside of the mounting frame while placing the pressure sensor inside the mounting frame, allows the connecting frame to move up and down relative to the mounting frame along the outside of the suspension cable when the cable tension changes, sharing the shear stress and bending moment, significantly improving the stability and reliability of the connection.

Description

Technical Field

[0001] This utility model relates to the field of bridge monitoring technology, specifically to a tension monitoring device for the suspension cables of a steel arch bridge. Background Technology

[0002] Arch bridge suspension cables (steel cables or steel rods) are tension members that connect the arch and the bridge deck system. They are installed vertically or obliquely between the bridge deck system and the arch above, transferring the weight of the bridge deck to the arch, and finally the arch transmits the force to the piers and foundations at both ends.

[0003] Chinese patent document CN222561180U discloses a lug-type suspension rod cable force testing device, including a force-bearing frame with a hollow pressure groove. The pressure groove includes a pressure testing surface and a carrier plate inside the pressure groove. The carrier plate can move along the cable direction within the pressure groove. A pressure sensor is connected to the side of the carrier plate facing the pressure testing surface, and the pressure sensor abuts against the pressure testing surface. The force-bearing frame is connected to the lower half of the cable, and the carrier plate is connected to the upper half of the cable.

[0004] In the above scheme, the pressure sensor is brought into contact with the top inner side of the load-bearing frame through the cooperation of the screw, nut and carrier plate, so that the double ear plate connector is connected to the load-bearing frame through the pressure sensor. In use, since there is no contact point between the double ear plate connector and the load-bearing frame, the screw may be subjected to excessive shear stress and bending moment, which may cause it to deform, loosen or even break, causing safety hazards. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a tension monitoring device for steel arch bridge suspension cables.

[0006] The technical solution of this utility model is: a tension monitoring device for steel arch bridge suspension cables, including a pressure sensor, a mounting frame, and a connecting frame;

[0007] The pressure sensor is set inside the mounting frame and contacts its inner top. The bottom of the pressure sensor is provided with a mounting plate for fixing the pressure sensor in use.

[0008] The connecting frame is fitted onto the outside of the mounting frame and connected to the mounting plate.

[0009] Preferably, the mounting frame includes a first frame and a connecting plate;

[0010] The first frame is U-shaped;

[0011] The connecting plate is fixedly connected to the opening of the first frame.

[0012] Preferably, the connecting frame includes an extension plate, bolts, and a second frame.

[0013] The second frame has a cavity with an opening at the bottom in the middle;

[0014] There are two extension plates, which are respectively set at the bottom of one side of the second frame and connected to the mounting plate by bolts.

[0015] Preferably, the inner walls of the second frame are provided with limiting blocks extending into the inner side of the first frame.

[0016] Preferably, the thickness of the limiting block is less than the height of the pressure sensor.

[0017] Preferably, the cavity opening size of the second frame is adapted to the outer side size of the first frame, and the second frame is slidably connected to the first frame.

[0018] Preferably, the cavity depth of the second frame is greater than the height of the first frame.

[0019] Preferably, ear plates are provided at the top of the second frame and the bottom of the connecting plate.

[0020] Preferably, a wire hole is provided in the middle of the mounting plate and below the pressure sensor.

[0021] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0022] This invention connects the connecting frame to the outside of the mounting frame. The mounting plate limits the connecting frame from the inside of the mounting frame while placing the pressure sensor inside the mounting frame. When the tension of the sling changes, the connecting frame can move up and down relative to the mounting frame along the outside of the mounting frame and jointly bear the shear stress and bending moment, which significantly improves the stability and reliability of the connection. Attached Figure Description

[0023] Figure 1 This is a perspective view of one embodiment of the present invention.

[0024] Figure 2 This is a cross-sectional schematic diagram of the frame structure in one embodiment of the present invention.

[0025] Figure 3 In one embodiment of this utility model Figure 1 A schematic diagram of the structure exploded.

[0026] Reference numerals: 1. First frame; 2. Connecting plate; 3. Mounting plate; 4. Extension plate; 5. Bolt; 6. Second frame; 7. Ear plate; 8. Limiting block; 9. Pressure sensor; 10. Wire hole. Detailed Implementation

[0027] Example 1

[0028] like Figure 1-3 As shown, the present invention proposes a tension monitoring device for steel arch bridge suspension cables, which includes a pressure sensor 9, a mounting frame, and a connecting frame.

[0029] The pressure sensor 9 is located inside the mounting frame and contacts its inner top. The bottom of the pressure sensor 9 is provided with a mounting plate 3 for fixing the pressure sensor 9 in use.

[0030] The connecting frame is fitted onto the outside of the mounting frame and connected to the mounting plate 3. It is used to wrap around the outside of the mounting frame in use, allowing the connecting frame and the mounting frame to move vertically relative to each other, thereby improving the stability of the connection.

[0031] In an optional embodiment, a wiring hole 10 is provided in the middle of the mounting plate 3 and below the pressure sensor 9 for wiring the mounting plate 3 during use.

[0032] In this embodiment, by fitting the connecting frame outside the mounting frame, the mounting plate 3 limits the connecting frame from the inside of the mounting frame, and the mounting plate 3 makes the pressure sensor 9 contact the top of the inner side of the mounting frame to detect the tension of the sling. When the tension of the sling changes, the connecting frame can move up and down relative to the mounting frame along the outside of the mounting frame. At the same time, the connecting frame and the mounting frame share the shear stress and bending moment, which significantly improves the stability and reliability of the connection and avoids structural damage or failure caused by stress concentration.

[0033] Example 2

[0034] like Figure 3 As shown, the present invention proposes a steel arch bridge cable tension monitoring device. Compared with the first embodiment, the difference in this embodiment is that the mounting frame includes a first frame 1 and a connecting plate 2.

[0035] The first frame 1 is U-shaped;

[0036] The connecting plate 2 is fixedly connected to the opening of the first frame 1;

[0037] In this embodiment, a connecting plate 2 is provided at the opening of the first frame 1. After the first frame 1 is connected to the connecting frame, the connecting plate 2 is welded to the first frame 1 at the opening. This makes the installation of the connecting frame more convenient and effectively enhances the overall strength and durability of the mounting frame, thereby further improving the stability and reliability of the sling tension monitoring device under complex working conditions.

[0038] Example 3

[0039] like Figure 2-3 As shown, the present invention proposes a steel arch bridge cable tension monitoring device. Compared with the first embodiment, the difference in this embodiment is that the connecting frame includes an extension plate 4, a bolt 5, and a second frame 6.

[0040] The second frame 6 has a cavity with an opening at the bottom in the middle;

[0041] There are two extension plates 4, which are respectively set at the bottom of one side of the second frame 6 and connected to the mounting plate 3 by bolts 5.

[0042] In an optional embodiment, the inner two walls of the second frame 6 are provided with limiting blocks 8 extending to the inner side of the first frame 1, in order to prevent the second frame 6 from separating from the first frame 1 when the bolt 5 becomes loose, thereby improving the connection stability.

[0043] In an optional embodiment, the thickness of the limiting block 8 is less than the height of the pressure sensor 9, so as to avoid the limiting block 8 from obstructing the use of the pressure sensor 9 during use.

[0044] In an optional embodiment, the cavity opening size of the second frame 6 is adapted to the outer dimension of the first frame 1, and the cavity depth of the second frame 6 is greater than the height of the first frame 1, so that the first frame 1 is slidably connected to the second frame 6 inside the second frame 6, and the second frame 6 limits the movement of the first frame 1, making the connection between the second frame 6 and the first frame 1 more stable. The pressure sensor 9 is located inside the second frame 6 and is sealed by the mounting plate 3, thereby effectively preventing interference from the external environment to the pressure sensor 9, and further ensuring the detection accuracy and long-term stability of the device.

[0045] In an optional embodiment, ear plates 7 are provided at the top of the second frame 6 and the bottom of the connecting plate 2, which are used to install the second frame 6 and the first frame 1 through the ear plates 7 during use, making the installation more convenient.

[0046] In this embodiment, by attaching the extension plate 4 to the outside of the first frame 1 and placing the pressure sensor 9 inside the first frame 1 with the mounting plate 3, and connecting the extension plate 4 to the mounting plate 3 with bolts 5, the mounting plate 3 limits the second frame 6, thereby ensuring the connection stability between the first frame 1 and the second frame 6, and further improving the reliability and anti-interference capability of the entire device under complex working conditions.

[0047] In this invention, the second frame 6 is fitted onto the outer side of the first frame 1, and the limiting block 8 is placed inside the first frame 1. Simultaneously, the connecting plate 2 is welded to the first frame 1 at its opening, and the pressure sensor 9 is mounted on the mounting plate 3. The mounting plate 3 then moves the pressure sensor 9 to the inner side of the first frame 1. The mounting plate 3 is connected to the second frame 6 via the cooperation of the extension plate 4 and bolts 5, thus limiting the position of the second frame 6. This allows the pressure sensor 9 to contact the inner top of the first frame 1 to detect the tension of the sling. When the tension of the sling changes, the second frame 6 can move up and down relative to the first frame 1 along its outer side. Both the second frame 6 and the first frame 1 share the shear stress and bending moment, significantly improving the stability and reliability of the connection and preventing structural damage or failure due to stress concentration.

[0048] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A steel arch bridge cable tension monitoring device, characterized in that, Includes a pressure sensor (9), a mounting frame, and a connection frame; The pressure sensor (9) is set inside the mounting frame and contacts its inner top. The bottom of the pressure sensor (9) is provided with a mounting plate (3) for fixing the pressure sensor (9) in use. The connecting frame is fitted onto the outside of the mounting frame and connected to the mounting plate (3).

2. The steel arch bridge sling tension monitoring device according to claim 1, characterized in that, The mounting frame includes a first frame (1) and a connecting plate (2); The first frame (1) is U-shaped; The connecting plate (2) is fixedly connected to the opening of the first frame (1).

3. The steel arch bridge sling tension monitoring device according to claim 2, characterized in that, The connecting frame includes an extension plate (4), bolts (5), and a second frame (6); The second frame (6) has a cavity with an opening at the bottom in the middle; There are two extension plates (4), which are respectively set at the bottom of one side of the second frame (6) and connected to the mounting plate (3) by bolts (5).

4. The steel arch bridge sling tension monitoring device according to claim 3, characterized in that, The inner walls of the second frame (6) are provided with limiting blocks (8) that extend to the inner side of the first frame (1).

5. The steel arch bridge sling tension monitoring device according to claim 4, characterized in that, The thickness of the limiting block (8) is less than the height of the pressure sensor (9).

6. The device for monitoring the tension of a steel arch bridge cable according to claim 3, characterized in that, The cavity opening size of the second frame (6) is adapted to the outer dimensions of the first frame (1), and the second frame (6) is slidably connected to the first frame (1).

7. The device for monitoring the tension of a steel arch bridge cable according to claim 3, characterized in that, The cavity depth of the second frame (6) is greater than the height of the first frame (1).

8. The device for monitoring the tension of a steel arch bridge cable according to claim 3, characterized in that, Ear plates (7) are provided at the top of the second frame (6) and the bottom of the connecting plate (2).

9. The device for monitoring the tension of a steel arch bridge cable according to claim 1, characterized in that, A wire hole (10) is provided in the middle of the mounting plate (3) and below the pressure sensor (9).

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