Prestressed concrete small box girder intelligent girder falling monitoring device based on binocular vision
By using the adjustment and dustproof components of the binocular vision intelligent beam-dropping monitoring device, the problems of pier adaptability and dust coverage during the erection of prestressed concrete small box girders were solved, improving erection efficiency and monitoring accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI COMM CONSTR ENG GRP CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-17
AI Technical Summary
Existing automated equipment cannot adapt to different viaduct pier sizes during the erection of prestressed concrete small box girders, and there is a problem that dust cover affects the monitoring effect.
The device employs a binocular vision-based intelligent beam drop monitoring system, equipped with an adjustment component and a dustproof component. The adjustment component uses a clamping motor and a limit motor to adjust the clamping plate to adapt to the bridge pier, while the dustproof component uses a ring-shaped air duct and an exhaust fan to prevent dust from covering the lens.
It enables automatic adjustment based on the size of the bridge piers, improving erection efficiency and safety, and ensuring the clarity and accuracy of monitoring data.
Smart Images
Figure CN224135516U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevated construction monitoring technology, specifically to an intelligent beam-dropping monitoring device for prestressed concrete small box girders based on binocular vision. Background Technology
[0002] With the continuous development of bridge construction technology, prestressed concrete small box girders, as a commonly used bridge component, have increasingly higher requirements for construction accuracy, efficiency, and safety during their erection process. Traditional girder lowering equipment mostly relies on manual operation or semi-automatic control, which not only results in long erection cycles but also poses safety hazards and error risks due to improper human operation. In recent years, intelligent control algorithms and sensing technologies have developed rapidly.
[0003] In existing technologies, most automated equipment uses laser ranging or a single sensor, lacking the ability to dynamically correct three-dimensional posture. Furthermore, it has not been specifically optimized to take into account the structural characteristics of prestressed concrete small box girders (such as pre-camber and time-varying deflection characteristics). Therefore, a new technical means has been developed to automate and intelligentize the erection process of prestressed concrete small box girders. This has become an important direction for improving erection efficiency and safety. However, there is a problem that the binocular vision equipment cannot adapt to different sizes of viaduct piers. Utility Model Content
[0004] The purpose of this invention is to provide an intelligent beam-dropping monitoring device for prestressed concrete small box girders based on binocular vision, in order to solve the problem in the background technology that the binocular vision equipment cannot adapt to different sizes of viaduct piers. By setting up an adjustment component, the width can be flexibly adjusted, and the distance from the side of the pier can be adjusted accordingly, which facilitates subsequent data monitoring.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] The intelligent beam dropping monitoring device for prestressed concrete small box girder based on binocular vision includes a main plate. An adjustment component is provided on the inner side of the main plate, which is used to adjust to adapt to the width of different bridge piers. A dustproof component is provided on the top of the main plate, which is used to prevent dust from covering the girder.
[0007] The adjustment assembly includes a clamping motor located in the middle of the main body plate. An adjustment screw is provided at the output end of the clamping motor. Three sets of limiting guide plates are provided on the inner sides of both ends of the main body plate, and the limiting guide plates are located on the outer side of the adjustment screw. A clamping plate is installed at the end of the limiting guide plate. The adjustment assembly includes a limiting motor, and a limiting screw is provided at the output end of the limiting motor. An adjustment slider is provided on the outer side of the limiting screw, and two sets of limiting plates are installed on the right side of the adjusting slider. A drive rod is provided on the inner side of the limiting plate, and a limiting baffle is provided on the outer side of the end of the drive rod.
[0008] The dustproof assembly includes an industrial camera, with a lens mounted on the top of the industrial camera. The top of the lens is fitted with an annular air duct, and exhaust fans are connected to the bottom of both ends of the annular air duct. A flip mount is fixedly connected to the bottom of the industrial camera.
[0009] Preferably, two sets of controllers are embedded in the inner side of the main body plate, and the controllers have built-in remote transmitters and are connected to each set of motors.
[0010] Preferably, a fixing sleeve is installed on the outer side of the limiting motor, and the fixing sleeve is located on the right side of the main body plate. The end of the limiting screw is mounted with a fixing plate through a bearing, and the fixing plate is located on the right side of the main body plate.
[0011] Preferably, a limiting slide is provided between the fixing plate and the fixing sleeve, and the limiting slide is located on the left side of the adjusting slider.
[0012] Preferably, a rotating shaft is provided on the inner side of the end of the drive rod, and an auxiliary guide rod is installed on the right side of the fixed sleeve, with the auxiliary guide rod passing through the middle of the upper end of the limiting baffle.
[0013] Preferably, four sets of support rods are installed on the top of the main body plate, and a support frame is installed on the top of the support rods. Arc-shaped grooves are opened on both sides of the support frame. A fixing screw is installed in the middle of the support frame, and a screw motor is provided on the outside of the fixing screw. A sliding seat is installed on the outside of the screw motor, and the sliding seat is located on the outside of the support frame. A bearing column is provided in the middle of the left end of the sliding seat, and a rotating motor is provided in the middle of the right end of the sliding seat. A square shaft is provided at the output end of the rotating motor.
[0014] Preferably, splicing grooves are provided on both sides of the lower end of the flip seat, and the splicing grooves are located on the outside of the bearing column and the square shaft, and several sets of inclined exhaust ports are provided on the inner side of the annular air duct.
[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0016] 1. This utility model, by installing an adjustment component, uses a clamping motor to drive the adjustment screw to rotate. During the rotation, the limiting guide plate and the clamping plate at the end are adjusted in interval for clamping and restriction. Then, the limiting motor drives the limiting screw to rotate, which in turn drives the adjustment slider to adjust its position. Since the length of the drive rod is fixed, the adjustment will push the limiting baffle to adjust laterally along the limiting auxiliary guide rod, thereby controlling the distance between it and the main plate. The adjustment component can achieve the effect of adjustment and restriction, so as to achieve the setting according to different elevated bridge pier sizes and monitoring position requirements.
[0017] 2. This utility model incorporates a dustproof component. Currently, high-precision industrial cameras often experience dust accumulation on the lens surface during data monitoring due to the construction environment. By installing a ring-shaped air duct that contacts the outermost ring of the lens, the airflow is drawn in from the outside by the motor and blades of the exhaust fan and then evenly blown out through the exhaust vents on the ring-shaped air duct. This method effectively prevents dust from settling on the lens, thus solving the problem of dust accumulation affecting monitoring results during existing construction monitoring processes. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0019] Figure 2 This is a schematic diagram of the main body plate structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the limiting baffle structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the support frame structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the industrial camera of this utility model.
[0023] The components include: 1. Main body plate; 101. Controller; 102. Clamping motor; 103. Adjusting screw; 104. Limiting guide plate; 105. Clamping plate; 2. Limiting motor; 201. Fixing sleeve; 202. Limiting screw; 203. Fixing plate; 204. Limiting slide bar; 205. Auxiliary guide rod; 3. Limiting baffle; 301. Adjusting slider; 302. Limiting plate; 303. Drive rod; 4. Support frame; 401. Support rod; 402. Arc groove; 403. Fixing screw; 404. Screw motor; 405. Sliding seat; 406. Rotating motor; 407. Bearing column; 5. Industrial camera; 501. Flip seat; 502. Splicing groove; 503. Lens; 504. Annular air duct; 505. Exhaust vent; 506. Exhaust fan. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-5 The intelligent beam dropping monitoring device for prestressed concrete small box girder based on binocular vision includes a main plate 1. An adjustment component is provided on the inner side of the main plate 1, and the adjustment component is used to adjust to adapt to the width of different bridge piers. A dustproof component is provided on the top of the main plate 1, and the dustproof component is used to prevent dust from covering it.
[0026] The adjustment assembly includes a clamping motor 102, which is located in the middle of the main body plate 1. An adjustment screw 103 is provided at the output end of the clamping motor 102. Three sets of limiting guide plates 104 are provided on the inner sides of both ends of the main body plate 1. The limiting guide plates 104 are located on the outer side of the adjustment screw 103. A clamping plate 105 is installed at the end of the limiting guide plate 104. The adjustment assembly includes a limiting motor 2, which is provided at the output end of the limiting motor 2. A limiting screw 202 is provided on the outer side of the limiting screw 202. An adjustment slider 301 is provided on the right side of the adjustment slider 301. Two sets of limiting plates 302 are installed on the right side of the adjusting slider 301. A drive rod 303 is provided on the inner side of the limiting plate 302. A limiting baffle 3 is provided on the outer side of the end of the drive rod 303.
[0027] The dustproof assembly includes an industrial camera 5, and a lens 503 is mounted on the top of the industrial camera 5. An annular air duct 504 is fitted on the top of the lens 503, and exhaust fans 506 are connected to the bottom of both ends of the annular air duct 504 through the air duct. A flip seat 501 is fixedly connected to the bottom of the industrial camera 5.
[0028] Through the above technical solution, the clamping motor 102 can drive the adjusting screw 103 to rotate. During the rotation, the limiting guide plate 104 and the clamping plate 105 at the end will be adjusted in interval for clamping and restriction. Then, the limiting motor 2 drives the limiting screw 202 to rotate. During the rotation, the adjusting slider 301 will be adjusted in position. Since the length of the driving rod 303 is fixed, the limiting baffle 3 will be pushed to adjust laterally along the limiting auxiliary guide rod 205 during adjustment, thereby controlling the distance between it and the main plate 1. The adjustment component can achieve the effect of adjustment and restriction, so as to achieve the setting according to different elevated bridge pier sizes and monitoring position requirements.
[0029] Through the above technical solution, by setting an annular air duct 504 to contact the outermost ring of the lens 503, the motor and fan blades inside the exhaust fan 506 drive the airflow from the outside into the air duct and then blow it out evenly through the exhaust port 505 on the annular air duct 504. This method can prevent dust from falling on the lens 503, thus effectively solving the problem that dust cover is easy to cause and affect the monitoring effect in the existing construction monitoring process. A high-resolution industrial camera (20 million pixels, global shutter) and an infrared supplementary light device are symmetrically installed at both ends of the beam to collect the three-dimensional point cloud data of the beam and the support in real time. An adaptive calibration algorithm is designed to eliminate system errors caused by camera installation offset through feature point matching (SURF+RANSAC). Dynamic pose calculation: merging visual point cloud, IMU angular velocity, and laser ranging data to calculate the real-time position and attitude (6 degrees of freedom) of the beam; Intelligent decision control: generating the target pose based on the prestressed beam mechanical model (considering creep and pre-camber); A prestressed small box girder deformation prediction model is proposed to dynamically compare real-time binocular visual data with theoretical pre-camber and deflection prediction values under construction loads, automatically compensating for deformation errors; An improved particle swarm optimization (PSO) algorithm is used to plan the optimal adjustment path. Voice prompts are used to assist in beam erection operations.
[0030] Specifically, two sets of controllers 101 are embedded in the inner side of the main body plate 1, and the controllers 101 have built-in remote transmitters and are connected to each set of motors.
[0031] Through the above technical solution, the controller 101 is equipped with a control module for connecting and controlling each group of motors, and can also use a remote control structure for auxiliary adjustment.
[0032] Specifically, a fixing sleeve 201 is installed on the outside of the limit motor 2, and the fixing sleeve 201 is located on the right side of the main body plate 1. A fixing plate 203 is installed at the end of the limit screw 202 through a bearing, and the fixing plate 203 is located on the right side of the main body plate 1.
[0033] Through the above technical solution, the fixing sleeve 201 can fix the limiting motor 2 and maintain stability, while the fixing plate 203 can restrict the inner structure and keep the limiting screw 202 rotating stably.
[0034] Specifically, a limiting slide bar 204 is provided between the fixing plate 203 and the fixing sleeve 201, and the limiting slide bar 204 is located on the left side of the adjusting slider 301.
[0035] Through the above technical solution, the limiting slider 204 can increase the restriction on the adjusting slider 301.
[0036] Specifically, a rotating shaft is provided on the inner side of the end of the drive rod 303, and an auxiliary guide rod 205 is installed on the right side of the fixed sleeve 201. The auxiliary guide rod 205 is installed through the middle of the upper end of the limit baffle 3.
[0037] Through the above technical solution, the rotating shaft can assist the drive rod 303 in rotational adjustment, while the auxiliary guide rod 205 can restrict the limit baffle 3 to maintain lateral adjustment.
[0038] Specifically, four sets of support rods 401 are installed on the top of the main body plate 1, and a support frame 4 is installed on the top of the support rods 401. Arc grooves 402 are opened on both sides of the support frame 4. A fixing screw 403 is installed in the middle of the support frame 4, and a screw motor 404 is set on the outside of the fixing screw 403. A sliding seat 405 is installed on the outside of the screw motor 404, and the sliding seat 405 is located on the outside of the support frame 4. A bearing column 407 is set in the middle of the left end of the sliding seat 405, and a rotating motor 406 is set in the middle of the right end of the sliding seat 405. A square shaft is set at the output end of the rotating motor 406.
[0039] Through the above technical solution, the support rod 401 can provide support for the overall structure at the top. The support frame 4 can provide constraints for the inner and outer structures. The fixed screw 403 and the screw motor 404 can drive the sliding seat 405 to slide laterally. By adjusting, the position of the industrial camera 5 can be changed, so that after installing a single set of concrete box beams, only one set of devices needs to be disassembled and reinstalled. The dual monitoring structure can achieve the effect of binocular vision monitoring. The rotation of the rotating motor 406 will control the rotation of the flip seat 501, thereby achieving the effect of angle adjustment and control of the industrial camera 5.
[0040] Specifically, splicing grooves 502 are provided on both sides of the lower end of the flip seat 501, and the splicing grooves 502 are located on the outside of the bearing column 407 and the square shaft. Several sets of inclined exhaust ports 505 are provided on the inner side of the annular air duct 504.
[0041] Through the above technical solution, the splicing slot 502 can be spliced with the square shaft of the rotating motor 406. Rotation can drive the flip seat 501 to adjust the angle. The exhaust port 505 is tilted outward, and the air blowing will keep the dust outward, avoiding covering the surface of the lens 503.
[0042] In use, the limit motor 2 is first controlled by the control device to operate according to the requirements. The limit screw 202 drives the adjusting slider 301 to move, thereby pushing the limit baffle 3 at the end of the drive rod 303 to adjust the interval. After keeping it close to the side of the elevated bridge pier, the clamping motor 102 controls the clamping plate 105 to clamp and fix the bridge pier. Then, the lead screw motor 404 controls the sliding seat 405 to adjust laterally along the support frame 4 for calibration. The exhaust fan 506 can continuously blow air, and the dust is blown away from the lens 503 through the annular air duct 504 and the exhaust port 505. Finally, the binocular vision is used to monitor the stress to assist construction.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A prestressed concrete small box girder intelligent beam falling monitoring device based on binocular vision, comprising a main body plate (1), characterized in that: An adjustment component is provided on the inner side of the main plate (1), and the adjustment component is used to adjust the width to adapt to different bridge piers. A dustproof component is provided on the top of the main plate (1), and the dustproof component is used to prevent dust from covering it. The adjustment assembly includes a clamping motor (102), which is located in the middle of the main body plate (1). The output end of the clamping motor (102) is provided with an adjustment screw (103). Three sets of limiting guide plates (104) are provided on the inner sides of both ends of the main body plate (1), and the limiting guide plates (104) are located on the outer side of the adjustment screw (103). A clamping plate (105) is installed at the end of the limiting guide plate (104). The adjustment assembly includes a limiting motor (2), which is provided with a limiting screw (202) at the output end. An adjustment slider (301) is provided on the outer side of the limiting screw (202), and two sets of limiting plates (302) are installed on the right side of the adjusting slider (301). A drive rod (303) is provided on the inner side of the limiting plate (302), and a limiting baffle (3) is provided on the outer side of the end of the drive rod (303). The dustproof assembly includes an industrial camera (5), and a lens (503) is mounted on the top of the industrial camera (5). An annular air duct (504) is fitted on the top of the lens (503), and exhaust fans (506) are connected to the bottom of both ends of the annular air duct (504) through the air duct. A flip seat (501) is fixedly connected to the bottom of the industrial camera (5).
2. The binocular vision-based intelligent prestressed concrete small box girder falling beam monitoring device according to claim 1, characterized in that: Two sets of controllers (101) are embedded in the inner side of the main plate (1), and the controllers (101) have built-in remote transmitters and are connected to each set of motors.
3. The binocular vision-based intelligent prestressed concrete small box girder falling beam monitoring device according to claim 1, characterized in that: A fixing sleeve (201) is installed on the outside of the limiting motor (2), and the fixing sleeve (201) is located on the right side of the main body plate (1). A fixing plate (203) is installed at the end of the limiting screw (202) through a bearing, and the fixing plate (203) is located on the right side of the main body plate (1).
4. The binocular vision-based intelligent prestressed concrete small box girder falling beam monitoring device according to claim 3, characterized in that: A limiting slide bar (204) is provided between the fixing plate (203) and the fixing sleeve (201), and the limiting slide bar (204) is located to the left of the adjusting slider (301).
5. The intelligent beam-dropping monitoring device for prestressed concrete small box girders based on binocular vision according to claim 3, characterized in that: A rotating shaft is provided on the inner side of the end of the drive rod (303), and an auxiliary guide rod (205) is installed on the right side of the fixed sleeve (201), and the auxiliary guide rod (205) is provided through the middle of the upper end of the limiting baffle (3).
6. The binocular vision-based intelligent prestressed concrete small box girder falling beam monitoring device according to claim 1, characterized in that: The main body plate (1) is equipped with four sets of support rods (401) on the top, and a support frame (4) is installed on the top of the support rods (401). Arc grooves (402) are opened on both sides of the support frame (4). A fixed screw rod (403) is installed in the middle of the support frame (4), and a screw motor (404) is provided on the outside of the fixed screw rod (403). A sliding seat (405) is installed on the outside of the screw motor (404), and the sliding seat (405) is located on the outside of the support frame (4). A bearing column (407) is provided in the middle of the left end of the sliding seat (405), and a rotating motor (406) is provided in the middle of the right end of the sliding seat (405). A square shaft is provided at the output end of the rotating motor (406).
7. The binocular vision-based intelligent prestressed concrete small box girder falling beam monitoring device according to claim 1, characterized in that: The flip seat (501) has splicing grooves (502) on both sides of its lower end, and the splicing grooves (502) are located on the outside of the bearing column (407) and the square shaft. The inner side of the annular air duct (504) has several sets of inclined exhaust ports (505).