An early warning device for hoisting attitude and dynamic response of irregularly shaped structures

Abstract

This utility model discloses an early warning device for the attitude and dynamic response of irregularly shaped structures during hoisting, comprising an attitude acquisition component, a local dynamic response acquisition component, a data acquisition terminal, a data analysis terminal, and an early warning output terminal. The attitude acquisition component includes at least four inertial measurement units, respectively installed at four preset positions on the irregularly shaped structure being hoisted. The local dynamic response acquisition component includes a vibration acceleration sensor, a strain sensor, and a displacement sensor, installed at key stress-bearing parts of the irregularly shaped structure being hoisted. The data acquisition terminal is communicatively connected to both the attitude acquisition component and the local dynamic response acquisition component. The data analysis terminal is communicatively connected to the data acquisition terminal. The early warning output terminal is communicatively connected to the data analysis terminal. This device can simultaneously acquire multi-angle attitude, local vibration, strain, and displacement information during the hoisting of irregularly shaped structures and output signals through the early warning output terminal, facilitating timely hoisting adjustments and safety procedures by on-site personnel.

Description

Technical Field

[0001] This utility model belongs to the field of safety monitoring technology for hoisting construction of large components and irregular structures, and relates to an early warning device for hoisting posture and dynamic response of irregular structures. Background Technology

[0002] Large bridge segments, building steel structures, equipment shells, and irregularly shaped components of hydropower projects often exhibit irregular geometry, off-center center of gravity, complex lifting point arrangements, and significant local stiffness differences during hoisting. Excessive tilting, amplified local vibrations, excessive strain, abnormal displacement, or uncoordinated stress on the lifting points during hoisting can lead to component collisions, cable slippage, local buckling, or even falls.

[0003] Existing hoisting monitoring devices mostly rely on single-point displacement, cable tension, or manual observation, making it difficult to simultaneously obtain information on the attitude coordination of the four corners of irregular structures and local dynamic response. Furthermore, on-site sensors may become loose, detach, or experience communication interruptions. Existing devices also lack a structural configuration that centrally displays and triggers early warnings for the attitude status, local vibration, strain, displacement, and measurement point status of multiple measurement points. Therefore, it is necessary to provide an attitude and dynamic response early warning device suitable for the entire hoisting process of irregular structures. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to solve the problems of existing hoisting monitoring devices, such as single measuring points, insufficient expression of structural posture, incomplete acquisition of local dynamic response, unintuitive early warning output, and easy sensor detachment, and to provide a hoisting posture and dynamic response early warning device for irregular structures.

[0005] Technical solution: This utility model provides an early warning device for the hoisting attitude and dynamic response of irregular structures, including an attitude acquisition component, a local dynamic response acquisition component, a data acquisition terminal, a data analysis terminal, and an early warning output terminal;

[0006] The attitude acquisition component includes at least four inertial measurement units, which are respectively installed at the four corners, lifting points, or boundary representative positions of the suspended irregular structure.

[0007] The local dynamic response acquisition component includes a vibration acceleration sensor, a strain sensor, and a displacement sensor, which are installed at key stress-bearing parts, connection parts, or deformation-sensitive parts of the suspended irregular structure.

[0008] The data acquisition terminal is communicatively connected to the attitude acquisition component and the local dynamic response acquisition component, respectively; the data analysis terminal is communicatively connected to the data acquisition terminal; and the early warning output terminal is communicatively connected to the data analysis terminal.

[0009] Furthermore, the inertial measurement unit is a nine-axis inertial measurement unit, which includes a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer.

[0010] Furthermore, each of the inertial measurement units is connected to the suspended irregular structure via a fixed base, an anti-loosening pressure plate, and an anti-detachment safety rope. The fixed base is detachably connected to the suspended irregular structure, the anti-loosening pressure plate presses the inertial measurement unit tightly, and one end of the anti-detachment safety rope is connected to the inertial measurement unit, while the other end is connected to the suspended irregular structure.

[0011] Furthermore, the data acquisition terminal includes a multi-channel acquisition interface, a clock synchronization unit, a buffer unit, and a communication unit. The multi-channel acquisition interface is connected to the inertial measurement unit, the vibration acceleration sensor, the strain sensor, and the displacement sensor, respectively. The clock synchronization unit is connected to the multi-channel acquisition interface. The buffer unit is connected to both the multi-channel acquisition interface and the communication unit. The communication unit is communicatively connected to the data analysis terminal.

[0012] Furthermore, the communication unit includes a wireless communication module and a wired communication interface. The wireless communication module is one or more of a Bluetooth module, a WiFi module, a LoRa module, a 4G module, or a 5G module. The wired communication interface is one or more of a serial port, a CAN interface, an RS485 interface, or an industrial Ethernet interface.

[0013] Furthermore, the early warning output terminal includes a control center display screen, an audible and visual alarm, and a mobile terminal communication module, which are respectively connected to the data analysis terminal.

[0014] Furthermore, the suspended irregular structure is provided with lifting points, the inertial measurement units are arranged adjacent to the lifting points, the vibration acceleration sensor is set in the vibration sensitive area of ​​the suspended irregular structure, the strain sensor is set in the lifting lug, web, flange or stress concentration area, and the displacement sensor is set in the large displacement sensitive area or support transition part.

[0015] Beneficial effects: (1) By distributing at least four inertial measurement units at the four corners or representative boundary positions of the suspended irregular structure, the overall attitude and four-corner coordination state of the structure can be obtained;

[0016] (2) By combining vibration acceleration sensors, strain sensors and displacement sensors, local dynamic response, stress state and deformation state can be acquired simultaneously;

[0017] (3) The early warning output terminal includes a control center display screen, an audible and visual alarm and a mobile terminal communication module, which simultaneously meet the needs of on-site duty, area warning and remote reception of early warnings;

[0018] (4) The installation structure of fixed base, anti-loosening pressure plate and anti-detachment safety rope can improve the installation reliability of inertial measurement unit in hoisting vibration environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the early warning device. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, this embodiment provides an early warning device for the hoisting attitude and dynamic response of irregular structures, including an attitude acquisition component, a local dynamic response acquisition component, a data acquisition terminal 40, a data analysis terminal 50, and an early warning output terminal 60.

[0022] The attitude acquisition component includes a first inertial measurement unit 21, a second inertial measurement unit 22, a third inertial measurement unit 23, and a fourth inertial measurement unit 24. These four units are respectively installed at the four corners, lifting points, or boundary representative positions of the suspended irregular structure 10. The boundary representative positions refer to key points located on the edge of the suspended irregular structure that reflect the spatial position and motion attitude of that area. For irregular structures without obvious corners, four feature points representing the overall attitude can be selected at the edge based on the structure's geometry. In other embodiments, the number of inertial measurement units can be greater than four to accommodate more complex irregular structures.

[0023] The local dynamic response acquisition component includes a vibration acceleration sensor 31, a strain sensor 32, and a displacement sensor 33. The vibration acceleration sensor 31 is installed in the vibration-sensitive area of ​​the suspended irregular structure 10; the strain sensor 32 is installed in the lifting lug, web, flange, or stress concentration area; and the displacement sensor 33 is installed in the large displacement-sensitive area or the support transition part.

[0024] Each inertial measurement unit (IMU) is equipped with a fixed base, an anti-loosening pressure plate, and an anti-detachment safety rope. The IMU is connected to the fixed base by bolts, magnets, or clamps. The fixed base can be detachably connected to the suspended irregular structure 10 by bolts, magnetic bases, clamps, or adhesives. The anti-loosening pressure plate presses the IMU tightly to reduce installation loosening caused by hoisting vibrations. One end of the anti-detachment safety rope is connected to the IMU, and the other end is connected to the suspended irregular structure 10 to prevent the IMU from falling after it detaches.

[0025] The data acquisition terminal 40 includes a multi-channel acquisition interface, a clock synchronization unit, a buffer unit, a communication unit, and a power supply unit. The multi-channel acquisition interface is connected to the inertial measurement unit, vibration acceleration sensor 31, strain sensor 32, and displacement sensor 33, respectively. The clock synchronization unit provides a unified time reference for the multi-channel data. The buffer unit temporarily stores the acquired data in case of communication failure. The communication unit may include a wireless communication module and a wired communication interface, and the power supply unit may include a battery, a power adapter, or a field power supply interface.

[0026] The data analysis terminal 50 is communicatively connected to the data acquisition terminal 40. In this embodiment, the data analysis terminal 50 can be implemented using conventional data processing hardware and algorithms in the field. Its core function is to process the multi-source sensor data transmitted by the data acquisition terminal 40 and output the analysis results through the early warning output terminal 60.

[0027] The early warning output terminal 60 includes a control center display screen, an audible and visual alarm, and a mobile terminal communication module. The control center display screen is used to display analysis results, the audible and visual alarm is used to output on-site audible and visual warnings in abnormal situations, and the mobile terminal communication module is used to send early warning information to the mobile terminals of construction supervisors, monitoring personnel, or safety management personnel.

[0028] In use, four inertial measurement units are installed at the four corners, near the lifting points, or at the boundary representative positions of the irregular structure 10 being lifted. Vibration acceleration sensors 31, strain sensors 32, and displacement sensors 33 are installed at the corresponding key locations. The data collected by each sensor enters the data acquisition terminal 40, is processed by the data analysis terminal 50, and then the early warning output terminal 60 outputs an early warning. When an abnormality is detected at the measuring point or a structural risk is detected, the control center display screen, the audible and visual alarm, and the mobile terminal communication module simultaneously output a prompt, thereby improving the safety monitoring capability of the irregular structure lifting process.

Claims

1. A hoisting posture and dynamic response early warning device for irregularly shaped structures, characterized in that, It includes attitude acquisition components, local dynamic response acquisition components, data acquisition terminals, data analysis terminals, and early warning output terminals; The attitude acquisition component includes at least four inertial measurement units, which are respectively installed at the four corners, lifting points, or boundary representative positions of the suspended irregular structure. The local dynamic response acquisition component includes a vibration acceleration sensor, a strain sensor, and a displacement sensor, which are installed at key stress-bearing parts, connection parts, or deformation-sensitive parts of the suspended irregular structure. The data acquisition terminal is communicatively connected to the attitude acquisition component and the local dynamic response acquisition component, respectively; the data analysis terminal is communicatively connected to the data acquisition terminal; and the early warning output terminal is communicatively connected to the data analysis terminal.

2. The early warning device for hoisting posture and dynamic response of irregular structures according to claim 1, characterized in that, The inertial measurement unit is a nine-axis inertial measurement unit, which includes a three-axis accelerometer, a three-axis gyroscope, and a three-axis magnetometer.

3. The early warning device for hoisting posture and dynamic response of irregular structures according to claim 1, characterized in that, Each of the inertial measurement units is connected to the suspended irregular structure via a fixed base, an anti-loosening pressure plate, and an anti-detachment safety rope. The fixed base is detachably connected to the suspended irregular structure. The anti-loosening pressure plate presses the inertial measurement unit tightly. One end of the anti-detachment safety rope is connected to the inertial measurement unit, and the other end is connected to the suspended irregular structure.

4. The early warning device for hoisting posture and dynamic response of irregular structures according to claim 1, characterized in that, The data acquisition terminal includes a multi-channel acquisition interface, a clock synchronization unit, a buffer unit, and a communication unit. The multi-channel acquisition interface is connected to the inertial measurement unit, the vibration acceleration sensor, the strain sensor, and the displacement sensor, respectively. The clock synchronization unit is connected to the multi-channel acquisition interface. The buffer unit is connected to both the multi-channel acquisition interface and the communication unit. The communication unit is communicatively connected to the data analysis terminal.

5. The early warning device for hoisting posture and dynamic response of irregular structures according to claim 4, characterized in that, The communication unit includes a wireless communication module and a wired communication interface. The wireless communication module is one or more of a Bluetooth module, a WiFi module, a LoRa module, a 4G module, or a 5G module. The wired communication interface is one or more of a serial port, a CAN interface, an RS485 interface, or an industrial Ethernet interface.

6. The early warning device for hoisting posture and dynamic response of irregular structures according to claim 1, characterized in that, The early warning output terminal includes a control center display screen, an audible and visual alarm, and a mobile terminal communication module, which are respectively connected to the data analysis terminal.

7. The early warning device for hoisting posture and dynamic response of irregular structures according to claim 1, characterized in that, The suspended irregular structure is provided with lifting points, and the inertial measurement units are arranged adjacent to the lifting points. The vibration acceleration sensor is set in the vibration-sensitive area of ​​the suspended irregular structure, the strain sensor is set in the lifting lug, web, flange or stress concentration area, and the displacement sensor is set in the large displacement-sensitive area or support transition part.

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