Strength monitoring equipment based on bridge safety detection

Abstract

The utility model provides strength monitoring equipment based on bridge safety detection, which comprises two mounting racks fixed at the bottom of a bridge, a movable table is connected between the two mounting racks in a sliding manner, a first motor is fixedly connected on the movable table, the output end of the first motor is fixedly connected with a first gear, and the output end of the first gear is fixedly connected with a second gear. The bottom of any one of the two mounting frames is fixedly connected with a rack, the first gear is connected with the rack in a meshed mode, and a mounting block is arranged on the movable table in a sliding mode. According to the strength monitoring equipment based on bridge safety detection, through a sliding fit structure of the mounting frame and the movable table and in combination with meshing transmission of a motor driving gear and a rack, transverse large-range movement of the monitoring device along the bottom of a bridge is achieved, the position limitation of traditional fixed equipment is broken through, and the safety of the bridge is improved. Key areas such as a bridge girder and a joint can be continuously scanned, and the comprehensiveness and the reliability of detection data are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge monitoring devices, specifically to a strength monitoring device based on bridge safety detection. Background Technology

[0002] As a core component of transportation infrastructure, the structural safety of bridges directly affects the stable operation of the social economy. In recent years, with the rapid development of the Internet of Things and intelligent sensing technology, bridge health monitoring has gradually evolved towards automation and high precision. Dynamic and multi-dimensional data collection has become an important means of assessing the strength and reliability of bridges.

[0003] However, most bridge inspection devices are still deployed at fixed points. These devices are usually installed directly at specific locations on the bridge using bolts or brackets. Although they can achieve continuous local data acquisition, their detection range is limited by the installation location and it is difficult to cover key stress points in the large span area at the bottom of the bridge. In addition, the fixed devices have insufficient angle adjustment capability and are prone to monitoring blind spots under complex bridge structures. This results in incomplete acquisition of key parameters such as stress distribution and vibration frequency, which seriously restricts the need for accurate assessment of the overall safety status of the bridge.

[0004] In view of this, a strength monitoring device based on bridge safety detection is proposed. Utility Model Content

[0005] The purpose of this invention is to address the limitation of existing strength monitoring devices based on bridge safety detection due to their limited monitoring range, and to provide a strength monitoring device based on bridge safety detection.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a strength monitoring device based on bridge safety detection, comprising two mounting frames fixed to the bottom of the bridge, a movable platform slidably connected between the two mounting frames, a first motor fixedly connected to the movable platform, a first gear fixedly connected to the output end of the first motor, a rack fixedly connected to the bottom of either of the two mounting frames, the first gear meshing with the rack, a mounting block slidably disposed on the movable platform, a rotating seat rotatably connected to the mounting block, and a monitoring device body with adjustable pitch angle disposed on the rotating seat.

[0007] Preferably, the mounting frame has multiple mounting holes for fixing the mounting frame to the bottom of the bridge, and movable blocks are fixedly connected to both ends of the movable platform. The mounting frame has movable slots that are adapted to the size of the movable blocks.

[0008] Preferably, a second motor is fixedly connected to the movable platform, a screw is fixedly connected to the output end of the second motor, the other end of the screw is rotatably connected to the movable platform, a screw sleeve is connected to the screw through a ball screw thread, the screw sleeve is fixedly connected to the mounting block, a slider is fixedly connected to the mounting block, and a groove adapted to the size of the slider is provided on the movable platform.

[0009] Preferably, a third motor is fixedly connected to the mounting block, a second gear is fixedly connected to the output end of the third motor, and a third gear is rotatably connected to the mounting block, the third gear meshing with the second gear.

[0010] Preferably, a fourth motor is fixedly connected to the rotating base, a fourth gear is fixedly connected to the output end of the fourth motor, a rotating rod is rotatably connected to the rotating base, the rotating rod is fixedly connected to the monitoring device body, a fifth gear is fixedly connected to the rotating rod, and the fifth gear meshes with the fourth gear.

[0011] Preferably, the length of the screw allows the monitoring device body to move from one end of the movable platform to the other along with the mounting block.

[0012] Preferably, the length of the movable platform is the same as the distance between the two mounting brackets.

[0013] Compared with the prior art, this utility model has the following beneficial effects:

[0014] The strength monitoring device based on bridge safety detection provided by this utility model uses a sliding fit structure between the mounting frame and the movable platform, combined with the meshing transmission of the motor-driven gear and rack, to realize the monitoring device to move a large range laterally along the bottom of the bridge. This breaks through the position limitations of traditional fixed equipment and can continuously scan key areas such as the main beam and joints of the bridge, significantly improving the comprehensiveness and reliability of the detection data.

[0015] The strength monitoring device based on bridge safety detection provided by this utility model utilizes a multi-level linkage structure that controls longitudinal movement by screw transmission, drives horizontal rotation by gear set, and adjusts pitch angle by gear meshing. This enables the monitoring device to achieve multi-dimensional precise positioning in space, effectively solves the monitoring blind spot problem under complex structures, and improves the accuracy of parameter acquisition.

[0016] The movable platform of the strength monitoring device based on bridge safety detection provided by this utility model has each transmission unit independently packaged and can be quickly disassembled and assembled, which greatly simplifies the maintenance process, extends the service life of the equipment and reduces the operation and maintenance cost. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0019] Figure 2 This is another three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 This is a three-dimensional structural diagram of a movable platform according to an embodiment of the present invention.

[0022] Figure 5 This is an exploded view of the mounting block and screw according to an embodiment of the present invention.

[0023] Figure 6 This is an exploded view of the fourth motor and mounting block according to an embodiment of the present invention.

[0024] In the picture:

[0025] 1. Mounting bracket; 11. Mounting hole; 12. Movable groove; 2. Movable platform; 21. Movable block; 3. First motor; 4. First gear; 5. Rack; 6. Second motor; 7. Screw; 8. Screw sleeve; 9. Mounting block; 10. Slider; 101. Slide groove; 102. Third motor; 13. Second gear; 14. Third gear; 15. Rotating seat; 16. Fourth motor; 17. Fourth gear; 18. Fifth gear; 19. Rotating rod; 20. Monitoring device body. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Please see Figure 1-6 .

[0028] This utility model relates to a strength monitoring device for bridge safety testing, comprising two mounting frames 1 fixed to the bottom of the bridge, a movable platform 2 slidably connected between the two mounting frames 1, a first motor 3 fixedly connected to the movable platform 2, a first gear 4 fixedly connected to the output end of the first motor 3, a rack 5 fixedly connected to the bottom of either mounting frame 1, the first gear 4 meshing with the rack 5, a mounting block 9 slidably disposed on the movable platform 2, a rotating seat 15 rotatably connected to the mounting block 9, and a monitoring device body 20 with adjustable pitch angle disposed on the rotating seat 15. This configuration enables the monitoring device to be precisely positioned with multiple degrees of freedom in three-dimensional space, breaking through the limitations of traditional fixed or single-degree-of-freedom mobile devices. It can not only adapt to the detection needs of complex curved surfaces at the bottom of the bridge, but also achieve efficient and blind-spot-free data acquisition through automated control, significantly improving the monitoring accuracy and efficiency of key stress areas of the bridge.

[0029] The mounting frame 1 has multiple mounting holes 11 for fixing the mounting frame 1 to the bottom of the bridge. Both ends of the movable platform 2 are fixedly connected to movable blocks 21. The mounting frame 1 has movable grooves 12 that are adapted to the size of the movable blocks 21. This arrangement can achieve rigid fixation between the mounting frame 1 and the bottom of the bridge through the mounting holes 11, ensuring the overall stability of the equipment. The sliding fit design of the movable blocks 21 and the movable grooves 12 allows the movable platform 2 to move smoothly laterally along the mounting frame 1, avoiding deviation or jamming, thereby providing a reliable movement path for the continuous scanning of the subsequent monitoring device.

[0030] In addition, a second motor 6 is fixedly connected to the movable platform 2. A screw 7 is fixedly connected to the output end of the second motor 6. The other end of the screw 7 is rotatably connected to the movable platform 2. A screw sleeve 8 is threadedly connected to the screw 7 through a ball screw pair. The screw sleeve 8 is fixedly connected to the mounting block 9. A slider 10 is fixedly connected to the mounting block 9. A groove 101 adapted to the size of the slider 10 is provided on the movable platform 2. With this configuration, the second motor 6 drives the screw 7 to rotate, so that the ball screw pair converts the rotational motion into the linear motion of the screw sleeve 8, realizing high-precision longitudinal displacement adjustment of the mounting block 9 along the movable platform 2. The cooperation between the slider 10 and the groove 101 further restricts the movement direction of the mounting block 9, prevents deflection, ensures the stability of the monitoring device during movement, and improves the repeatability and reliability of data acquisition.

[0031] Secondly, a third motor 102 is fixedly connected to the mounting block 9, and a second gear 13 is fixedly connected to the output end of the third motor 102. A third gear 14 is rotatably connected to the mounting block 9. The third gear 14 meshes with the second gear 13. The third motor 102 drives the rotating seat 15 to rotate horizontally through the meshing transmission of the second gear 13 and the third gear 14. The gear transmission has high meshing accuracy and stable transmission efficiency, which can accurately control the horizontal angle adjustment of the monitoring device, so that it can adapt to the structural characteristics of different directions at the bottom of the bridge and eliminate the angle deviation problem of traditional manual adjustment.

[0032] Furthermore, a fourth motor 16 is fixedly connected to the rotating base 15, and a fourth gear 17 is fixedly connected to the output end of the fourth motor 16. A rotating rod 19 is rotatably connected to the rotating base 15, and the rotating rod 19 is fixedly connected to the monitoring device body 20. A fifth gear 18 is fixedly connected to the rotating rod 19, and the fifth gear 18 meshes with the fourth gear 17. The fourth motor 16 drives the rotating rod 19 to pitch through the meshing of the fourth gear 17 and the fifth gear 18. The gear meshing structure has self-locking properties, which can accurately position the monitoring device at any angle, avoiding tilt deviation caused by gravity or vibration, thereby improving the measurement accuracy of parameters such as strain and vibration.

[0033] Specifically, the length of the screw 7 allows the monitoring device body 20 to move from one end of the movable platform 2 to the other along with the mounting block 9. By limiting the matching relationship between the length of the screw 7 and the stroke of the movable groove 12, it can be ensured that the longitudinal movement range of the mounting block 9 completely covers the effective working area of ​​the movable platform 2, avoiding monitoring blind spots caused by insufficient stroke, and realizing full coverage scanning of the detection path at the bottom of the bridge.

[0034] Furthermore, the length of the movable platform 2 is the same as the distance between the two mounting frames 1. The strict matching design of the distance between the movable platform 2 and the mounting frame 1 ensures that the two ends of the movable platform 2 are always closely matched with the mounting frame 1 when the platform moves laterally, avoiding the risk of shaking or disengagement due to length errors. It also ensures that the overall structure of the equipment is compact and can adapt to the installation requirements of bridges with different spans.

[0035] Working principle:

[0036] This strength monitoring device achieves automated detection in three-dimensional space through multi-stage transmission and linkage control. First, the first motor 3 drives the first gear 4 to mesh with the rack 5 at the bottom of the mounting frame 1, moving the movable platform 2 laterally along the bridge to cover the full-span detection area at the bottom of the bridge. Simultaneously, the second motor 6 drives the screw 7 to rotate, pushing the mounting block 9 longitudinally along the movable platform 2 through the ball screw pair. Combined with the limiting guidance of the slider 10 and the slide groove 101, the linear accuracy of the longitudinal displacement is ensured. During this process, the third motor 102 drives the rotating seat 15 to rotate horizontally through the meshing of the second gear 13 and the third gear 14, synchronously adjusting the horizontal detection angle of the monitoring device. The fourth motor 16 drives the rotating rod 19 to pitch through the meshing of the fourth gear 17 and the fifth gear 18, precisely adjusting the vertical tilt angle of the monitoring device. With this setup, through multi-dimensional linkage of lateral and longitudinal movement, horizontal rotation, and pitch adjustment, the monitoring device can adapt to the structural surfaces of the bridge bottom with different curvatures and orientations, completing continuous scanning without blind spots, and achieving efficient acquisition and accurate analysis of parameters in the key stress areas of the bridge.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A strength monitoring device based on bridge safety detection, characterized in that: It includes two mounting brackets (1) fixed to the bottom of the bridge, and a movable platform (2) is slidably connected between the two mounting brackets (1). A first motor (3) is fixedly connected to the movable platform (2), and a first gear (4) is fixedly connected to the output end of the first motor (3). A rack (5) is fixedly connected to the bottom of either of the two mounting brackets (1). The first gear (4) meshes with the rack (5). A mounting block (9) is slidably arranged on the movable platform (2). A rotating seat (15) is rotatably connected to the mounting block (9). A monitoring device body (20) with adjustable pitch angle is arranged on the rotating seat (15).

2. The strength monitoring device based on bridge safety detection as described in claim 1, characterized in that: The mounting frame (1) has multiple mounting holes (11) for fixing the mounting frame (1) to the bottom of the bridge. Both ends of the movable platform (2) are fixedly connected to movable blocks (21). The mounting frame (1) has movable slots (12) that are adapted to the size of the movable blocks (21).

3. The strength monitoring device based on bridge safety detection as described in claim 1, characterized in that: A second motor (6) is fixedly connected to the movable platform (2). A screw (7) is fixedly connected to the output end of the second motor (6). The other end of the screw (7) is rotatably connected to the movable platform (2). A screw sleeve (8) is connected to the screw (7) through a ball screw thread. The screw sleeve (8) is fixedly connected to the mounting block (9). A slider (10) is fixedly connected to the mounting block (9). A groove (101) adapted to the size of the slider (10) is provided on the movable platform (2).

4. The strength monitoring device based on bridge safety detection as described in claim 1, characterized in that: A third motor (102) is fixedly connected to the mounting block (9). A second gear (13) is fixedly connected to the output end of the third motor (102). A third gear (14) is rotatably connected to the mounting block (9). The third gear (14) meshes with the second gear (13).

5. The strength monitoring device based on bridge safety detection as described in claim 1, characterized in that: A fourth motor (16) is fixedly connected to the rotating base (15). A fourth gear (17) is fixedly connected to the output end of the fourth motor (16). A rotating rod (19) is rotatably connected to the rotating base (15). The rotating rod (19) is fixedly connected to the monitoring device body (20). A fifth gear (18) is fixedly connected to the rotating rod (19). The fifth gear (18) meshes with the fourth gear (17).

6. The strength monitoring device based on bridge safety detection as described in claim 3, characterized in that: The length of the screw (7) allows the monitoring device body (20) to move from one end of the movable platform (2) to the other end along with the mounting block (9).

7. The strength monitoring device based on bridge safety detection as described in claim 1, characterized in that: The length of the movable platform (2) is the same as the distance between the two mounting brackets (1).

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