Multi-point bridge monitoring device

Abstract

The utility model provides a multi-point type bridge monitoring device which comprises a plurality of monitoring mechanisms distributed along the length of a bridge, each monitoring mechanism comprises a supporting rod, a supporting table is arranged on the outer side of the upper end of each supporting rod, an outer tooth type slewing bearing is arranged on each supporting table, and an inner ring of each outer tooth type slewing bearing is fixed on each supporting table. An outer ring of the external tooth type slewing bearing is connected with a rotating ring, the outer side of the rotating ring is connected with a three-dimensional laser scanner through a connecting mechanism, a motor support is arranged on the outer side of the supporting table, a motor is arranged on the motor support, a driving gear is arranged at the output end of the motor, and the driving gear is meshed with external teeth of the external tooth type slewing bearing. Through multi-point arrangement, the device is used for scanning the surface of the bridge periodically or in real time, information such as the geometric morphology, crack distribution and surface damage of the bridge is obtained, and dynamic monitoring of the macrostructure condition of the bridge is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of bridge monitoring equipment, in particular to a multi-point bridge monitoring device. Background Art

[0002] As an important transportation infrastructure, the safety and stability of bridges directly affect the efficiency of transportation and the safety of people's lives and property. However, during the long-term service of bridges, they may be affected by various factors such as wind loads, vehicle loads, temperature changes, foundation settlement, etc., which may lead to structural performance degradation, such as cracks, increased strain, abnormal vibration, bearing deformation, etc. The traditional regular manual inspection method is difficult to monitor the health status of bridges in real time and comprehensively, and consumes a lot of manpower and material resources.

[0003] IN202211022626A discloses a bridge monitoring system, which is based on an artificial intelligence camera unit and is used to record data related to movement along the bridge. The camera unit can only record relevant data of movement along the bridge, and cannot record cracks, deformations, etc. generated on the bridge deck. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a multi-point bridge monitoring device, which is used to periodically or in real time scan the bridge surface through a multi-point arrangement to obtain information such as bridge geometry, crack distribution, surface damage, etc., which is conducive to dynamic monitoring of the macroscopic structural condition of the bridge.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a multi-point bridge monitoring device, including several monitoring mechanisms distributed along the length of the bridge, the monitoring mechanism including a support rod, a support platform is provided on the outer side of the upper end of the support rod, an external gear slewing bearing is provided on the support platform, the inner ring of the external gear slewing bearing is fixed on the support platform, the outer ring of the external gear slewing bearing is connected to the rotating ring, the outer side of the rotating ring is connected to the three-dimensional laser scanner through a connecting mechanism, a motor bracket is provided on the outer side of the support platform, a motor is provided on the motor bracket, a driving gear is provided at the output end of the motor, and the driving gear is meshed with the outer teeth of the external gear slewing bearing.

[0006] In a preferred solution, the connection mechanism includes an electric push rod, which is connected to the rotating ring. The telescopic end of the electric push rod is provided with a support seat, and the three-dimensional laser scanner is installed on the support seat.

[0007] In a preferred embodiment, a mounting seat is provided at the tail of the electric push rod, and a mounting hole is provided on the mounting seat for the straight ends of two sets of "U"-shaped rods to pass through. The straight ends of the "U"-shaped rods are provided with external threads. After the "U"-shaped rods are sleeved on the outside of the rotating ring, they are inserted into the mounting holes of the mounting seat and fixed by nuts.

[0008] In a preferred solution, a mounting groove is provided on the outer side of the rotating ring, and the "U"-shaped rod is clamped in the mounting groove.

[0009] In a preferred solution, a photovoltaic power generation component is provided at the top of the support rod to power the three-dimensional laser scanner.

[0010] The utility model provides a multi-point bridge monitoring device, which arranges multiple monitoring mechanisms at multiple points along the bridge to periodically or in real time scan the bridge surface to obtain information such as bridge geometry, crack distribution, surface damage, etc., replacing manual inspections and improving monitoring efficiency. At the same time, the rotation of the rotating ring can drive the three-dimensional laser scanner to change the scanning position and increase the monitoring range. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0012] Figure 1 It is a schematic diagram of the structure of the monitoring mechanism of the utility model;

[0013] Figure 2 It is a structural schematic diagram of an external gear slewing bearing;

[0014] Figure 3 It is the installation diagram of the connection mechanism;

[0015] Figure 4 is a schematic diagram of the structure of the rotating ring;

[0016] Figure 5 It is a structural schematic diagram of a U”-shaped rod;

[0017] In the figure: support rod 1, support platform 2, external gear slewing bearing 3, rotating ring 4, three-dimensional laser scanner 5, motor bracket 6, motor 7, drive gear 8, electric push rod 9, support seat 10, mounting seat 11, "U"-shaped rod 12, nut 13, photovoltaic power generation component 14, mounting groove 401. DETAILED DESCRIPTION

[0018] Embodiment 1:

[0019] like Figure 1~2 As shown, a multi-point bridge monitoring device includes a plurality of monitoring mechanisms distributed along the length of the bridge, which are arranged at multiple points and set at the edge of the bridge. The monitoring mechanism includes a support rod 1, the lower end of the support rod 1 is fixed on the bridge, and the upper end of the support rod 1 is provided with a support platform 2, the support platform 2 is a cylindrical structure, the support rod 1 is arranged in sections, the support platform 2 is arranged between two sections of the support rod 1 and is fixedly connected to the support rod 1, and an external gear slewing bearing 3 is provided on the support platform 2, and the structure of the external gear slewing bearing 3 is Figure 2 shown.

[0020] The inner ring of the external gear slewing bearing 3 is fixed on the support platform 2, and the outer ring of the external gear slewing bearing 3 is connected to the rotating ring 4 through bolt connection. The rotating ring 4 is arranged on the upper side of the external gear slewing bearing 3 and is driven to rotate around the support rod 1 through the external gear slewing bearing 3.

[0021] The outer side of the rotating ring 4 is connected to the three-dimensional laser scanner 5 through a connecting mechanism. The connecting structure is an inclined connecting frame. A motor bracket 6 is provided on the outer side of the support platform 2. A motor 7 is provided on the motor bracket 6. A driving gear 8 is provided at the output end of the motor 7. The driving gear 8 is meshed with the external teeth of the externally-toothed slewing support 3.

[0022] The three-dimensional laser scanner 5 scans and records the geometric shape, crack distribution and surface damage of the bridge deck around the monitoring mechanism. The three-dimensional laser scanner 5 transmits the collected signals to the remote monitoring center for processing through a wired or wireless communication module. Driven by the motor 7, the rotating ring 4 rotates or swings around the support rod 1, thereby changing the position of the three-dimensional laser scanner 5 and expanding the scanning range of the three-dimensional laser scanner 5.

[0023] Embodiment 2: Different from embodiment 1, as Figure 3 As shown, the connecting mechanism includes an electric push rod 9, which is tilted. The tail end of the electric push rod 9 is connected to the rotating ring 4. The telescopic end of the electric push rod 9 is provided with a support seat 10. The three-dimensional laser scanner 5 is installed on the support seat 10 by welding or bolting. Specifically, a connecting tube is provided on the support seat 10, and the mounting end of the three-dimensional laser scanner 5 is threadedly connected to the connecting tube.

[0024] Preferably, Figures 4 and 5 As shown, a mounting seat 11 is provided at the tail of the electric push rod 9, and a mounting hole is provided on the mounting seat 11 for the straight ends of two groups of "U"-shaped rods 12 to pass through. The straight ends of the "U"-shaped rods 12 are provided with external threads. After the "U"-shaped rods 12 are sleeved on the outside of the rotating ring 4, they are inserted into the mounting holes of the mounting seat 11 and fixed by nuts 13.

[0025] Specifically, the outer side of the rotating ring 4 is provided with a mounting groove 401, which is arranged in an annular shape, and the "U"-shaped rod 12 is clamped in the mounting groove 401. By providing the mounting groove 401, the "U"-shaped rod 12 can be limited up and down to prevent the "U"-shaped rod 12 from sliding up and down, thereby improving the installation stability.

[0026] Embodiment 3:

[0027] Different from the first or second embodiment, a photovoltaic power generation assembly 14 is provided at the top of the support rod 1 to supply power to the three-dimensional laser scanner 5 .

[0028] The photovoltaic power generation component 14 uses a photovoltaic power generation component from D-Link, with a photovoltaic panel of 300W and a lithium battery of 12V, which is convenient for powering the three-dimensional laser scanner 5.

Claims

1. A multi-point bridge monitoring device, characterized in that: The invention comprises a plurality of monitoring mechanisms distributed along the length of the bridge, wherein the monitoring mechanisms comprise a support rod (1), a support platform (2) being provided at the upper end of the support rod (1), an external gear slewing bearing (3) being provided on the support platform (2), an inner ring of the external gear slewing bearing (3) being fixed on the support platform (2), an outer ring of the external gear slewing bearing (3) being connected to a rotating ring (4), an outer side of the rotating ring (4) being connected to a three-dimensional laser scanner (5) via a connecting mechanism, a motor bracket (6) being provided on the outer side of the support platform (2), a motor (7) being provided on the motor bracket (6), a driving gear (8) being provided at the output end of the motor (7), and the driving gear (8) being meshed with the outer teeth of the external gear slewing bearing (3).

2. A multi-point bridge monitoring device according to claim 1, characterized in that: The connection mechanism comprises an electric push rod (9), the electric push rod (9) being connected to the rotating ring (4), a support seat (10) being provided at the telescopic end of the electric push rod (9), and the three-dimensional laser scanner (5) being mounted on the support seat (10).

3. A multi-point bridge monitoring device according to claim 2, characterized in that: The rear end of the electric push rod (9) is provided with a mounting seat (11), and the mounting seat (11) is provided with mounting holes for the straight ends of two sets of "U"-shaped rods (12) to pass through, and the straight ends of the "U"-shaped rods (12) are provided with external threads. The "U"-shaped rods (12) are inserted into the mounting holes of the mounting seat (11) after being sleeved on the outside of the rotating ring (4) and fixed by nuts (13).

4. A multi-point bridge monitoring device according to claim 3, characterized in that: The outer side of the rotating ring (4) is provided with a mounting groove (401), and the "U"-shaped rod (12) is clamped in the mounting groove (401).

5. The multi-point bridge monitoring device according to claim 1, characterized in that: A photovoltaic power generation assembly (14) is provided at the top end of the support rod (1) to supply power to the three-dimensional laser scanner (5).

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