Method for using a positioning auxiliary device for steel truss hoisting

Abstract

The present invention is specifically a positioning auxiliary device for steel truss hoisting; the device is characterized by: an acoustic laser composite rangefinder transmitting device (1), a laser rangefinder receiving device (2), a three-dimensional scanner (3) and a computer (4); wherein the acoustic laser composite rangefinder transmitting device (1) is installed on the truss column foot, the laser rangefinder receiving device (2) is installed on the truss support, and the three-dimensional scanner (3) and the computer (4) are handheld. The present invention can control the relative position relationship between the truss and surrounding obstacles in real time during the hoisting process of a large truss, and realize real-time position detection of the truss and surrounding obstacles. Even if the truss column foot is in a blind spot, through the present invention and actual on-site operation, it can still prevent it from colliding or scraping with the surrounding obstacles, thereby ensuring the safety and stability of the hoisting process.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure installation, in particular to a method for using a positioning auxiliary device for steel truss hoisting. Background Art

[0002] In the engineering field, the hoisting and installation accuracy of large trusses affects the installation accuracy and stability of the entire structure. However, during actual installation, large trusses are difficult to position due to their large spans and heavy weight. Furthermore, the large truss column bases block a wide range of sightlines, making positioning even more difficult. Furthermore, due to their large size, large trusses are often difficult to adjust visually to avoid obstacles during the hoisting process, making them prone to scrapes, collisions, and other accidents.

[0003] Currently, the most common positioning method involves manually visually aligning the trusses by marking a cross. This results in large errors and difficulty in adjustment, requiring only the construction workers' experience to determine the correct alignment. Furthermore, positioning is time-consuming and inefficient. Once misalignment or deviation occurs, it cannot be corrected later, impacting the subsequent installation of all connected secondary components. This significantly prolongs the construction period, reduces construction quality, and poses safety risks to the trusses' subsequent use. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects and to provide a positioning auxiliary device for steel truss hoisting and a method for using the same.

[0005] In order to achieve the above object, the present invention is achieved as follows:

[0006] A positioning auxiliary device for steel truss hoisting, comprising an acoustic laser composite rangefinder transmitting device (1), a laser rangefinder receiving device (2), a three-dimensional scanner, and a computer (4); wherein the acoustic laser composite rangefinder transmitting device (1) is mounted on a truss column foot, the laser rangefinder receiving device (2) is mounted on a truss support, and the three-dimensional scanner and computer (4) are handheld for use.

[0007] The positioning auxiliary device for steel truss hoisting is characterized in that the acoustic wave laser composite rangefinder transmitting device (1) has a built-in acoustic wave rangefinder (5), a laser rangefinder (6), a power supply (7), a transmitting device data signal transmitter (8), and a transmitting device data signal receiver (9); the laser rangefinder receiving device (2) includes a laser rangefinder receiver (10), a power supply (11), a receiving device data signal transmitter (12), and a receiving device data signal receiver (13).

[0008] The method for using the positioning auxiliary device for steel truss hoisting includes:

[0009] Step 1: Connect the acoustic laser composite rangefinder transmitting device (1), the laser rangefinder receiving device (2), the three-dimensional scanner, and the computer (4) to a power source and confirm that they are operating normally and have sufficient power;

[0010] Step 2: Connect the three-dimensional scanner, the transmitting device data signal receiver (9), and the receiving device data signal receiver (13) to the computer (4), and check whether the data transmission is correct;

[0011] Step 3: Install the acoustic laser composite rangefinder transmitter (1) to the base of the truss column, with the installation position being around the base of the column;

[0012] Step 4: Install the laser rangefinder receiving device (2) to the truss support, with the installation position being around the support;

[0013] Step 5: Use a 3D scanner to scan the overall shape of the truss column foot and the truss support, and transmit the data to the computer (4), and form a solid 3D model of the truss column foot and the truss support in the computer (4);

[0014] Step 6, start hoisting, first activate the sonic rangefinder (5) inside the sonic laser composite rangefinder transmitter (1), the sonic rangefinder (5) generates ultrasonic waves, and the ultrasonic waves are reflected back to the rangefinder after encountering an obstacle, thereby obtaining the distance between the obstacle and the rangefinder, and the sonic rangefinder (5) obtains the distance between the obstacle and the truss column foot and transmits it to the computer (4), and the computer (4) model displays the surrounding environment of the truss column foot in real time. There are four sonic laser composite rangefinder transmitters (1) installed on the four sides of the truss column foot, and the environment on all four sides of the truss is detected; if the truss is too close to the surrounding obstacles, it will be displayed in real time in the computer (4), and the hoisting state will be adjusted accordingly to prevent the truss from colliding with the obstacles;

[0015] Step 7: After the truss column foot moves to the top of the support, the laser rangefinder (6) inside the acoustic laser composite rangefinder transmitting device (1) is activated, and the position of the truss column foot is preliminarily adjusted so that the laser emitted by the laser rangefinder (6) is irradiated on the laser rangefinder receiving device (2). The acoustic laser composite rangefinder transmitting device (1) transmits the laser emission time to the computer (4), and the laser rangefinder receiving device (2) transmits the laser arrival time to the computer (4). The accurate distance between the four sides of the truss support and the four sides of the truss column foot is calculated based on the time difference. When the distance between the four sides is within the error allowable range, the truss slowly falls, otherwise the truss inclination angle is adjusted;

[0016] Step 8: The laser rangefinder receiving device (2) transmits the position of the laser landing point to the computer (4), compares the laser landing point position with the truss column foot and the truss support model, and obtains the size of the horizontal deviation distance between the truss column foot and the truss support; when the horizontal deviation is within the error allowable range, the truss slowly falls, otherwise the truss position is adjusted;

[0017] Step 9: The truss is slowly lowered. During the lowering process, the vertical distance and the horizontal distance between the acoustic laser composite rangefinder transmitting device (1) and the laser rangefinder receiving device (2) are monitored in real time by the computer (4). When the difference between the four distances is too large, the truss is stopped from falling and adjusted in time. After the adjustment is completed, the truss is continued to fall.

[0018] Step 10: When the truss column foot and truss support fit together, the truss hoisting is completed.

[0019] During the large-scale truss hoisting process, the present invention can monitor the relative position of the truss and surrounding obstacles in real time, enabling real-time position detection of the truss and surrounding obstacles. Even if the truss column foot is in a blind spot, the present invention and on-site operation can prevent it from colliding or scraping with surrounding obstacles, thus ensuring the safety and stability of the hoisting process. During the installation process, the relative position of the truss column foot and truss support can also be controlled in real time to ensure the accuracy of the connection between the two, laying a solid foundation for the smooth progress of subsequent construction. The present invention is also simple to operate and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : Laser ranging working mode.

[0021] Figure 2 : Acoustic wave detection working mode.

[0022] Figure 3 : Acoustic laser composite rangefinder launching device.

[0023] Figure 4 : Laser rangefinder receiving device.

[0024] Figure 5 : Truss hoisting, positioning and installation flow chart. DETAILED DESCRIPTION

[0025] The present invention is further illustrated below by means of specific examples.

[0026] like Figures 1 to 5As shown, a positioning auxiliary device for steel truss hoisting, an acoustic laser composite rangefinder transmitting device (1), a laser rangefinder receiving device (2), a three-dimensional scanner and a computer (4); wherein the acoustic laser composite rangefinder transmitting device (1) is installed on the truss column foot, the laser rangefinder receiving device (2) is installed on the truss support, and the three-dimensional scanner and computer (4) are handheld.

[0027] The positioning auxiliary device for steel truss hoisting is characterized in that the acoustic wave laser composite rangefinder transmitting device (1) has a built-in acoustic wave rangefinder (5), a laser rangefinder (6), a power supply (7), a transmitting device data signal transmitter (8), and a transmitting device data signal receiver (9); the laser rangefinder receiving device (2) includes a laser rangefinder receiver (10), a power supply (11), a receiving device data signal transmitter (12), and a receiving device data signal receiver (13).

[0028] The functions of the components of the above auxiliary devices are as follows:

[0029] The ultrasonic rangefinder (5) can emit ultrasonic waves of about 20kHz. When the ultrasonic waves it emits touch an obstacle, they are reflected back to itself and the distance between the obstacle and the truss is calculated. When the truss column foot is far away from the truss support, it can provide early warning information of truss collision, thereby preventing the truss from colliding with other obstacles such as concrete foundations and scaffolding during the hoisting process, thereby improving the safety of hoisting.

[0030] The laser rangefinder (6) is used to finely adjust the position of the truss when the truss column foot has been moved to the top of the support, and is used in conjunction with the laser rangefinder receiving device (2) to improve the installation accuracy of the truss and ensure the accuracy of the truss installation.

[0031] The power supply (7) provides power support for the sonic rangefinder (5), the laser rangefinder (6) and the data signal transmitter (8) of the transmitting device (1) to ensure stable operation of the device.

[0032] The transmitting device data signal transmitter (8) and the transmitting device data signal receiver (9) are used in conjunction with each other. The transmitting device data signal transmitter (8) is located inside the acoustic laser composite rangefinder transmitting device (1) and is used to transmit data generated by the acoustic rangefinder (5) and the laser rangefinder (6) to the outside.

[0033] The transmitting device data signal receiver (9) is inserted into the computer (4) via a USB interface, and is used to receive the data signal transmitted outward by the transmitting device data signal transmitter (8) and transmit it to the computer (4).

[0034] The laser rangefinder receiver (10) is a device for receiving the laser signal emitted by the laser rangefinder (6), and can calculate the distance between the truss column foot and the truss support based on the time when the laser signal is emitted and arrives.

[0035] The power supply (11) provides power support for the laser rangefinder receiver (10) and the receiving device data signal transmitter (12) inside the laser rangefinder receiving device (2).

[0036] The receiving device data signal transmitter (12) is used in conjunction with the receiving device data signal receiver (13). The receiving device data signal transmitter (12) is located inside the laser rangefinder receiving device (2) and is used to transmit data generated by the laser rangefinder receiver (10) to the outside.

[0037] The receiving device data signal receiver (13) is inserted into the computer (4) via a USB interface, and is used to receive the signal emitted outward by the receiving device data signal transmitter (12) and transmit it to the computer (4).

[0038] The three-dimensional scanner is used to input the overall model of the truss column foot and truss support into the computer (4), so as to facilitate the real-time calculation of the offset of the column foot and support and ensure the accuracy of the installation.

[0039] The computer (4) is used to receive information transmitted by the acoustic laser composite rangefinder transmitting device (1), the laser rangefinder receiving device (2), and the three-dimensional scanner, to form a three-dimensional model of the column foot and the support, and to detect the hoisting position of the truss in real time during the hoisting process.

[0040] The positioning auxiliary device for steel truss hoisting can achieve the following functions:

[0041] A. Provide collision warning for truss hoisting;

[0042] B. Obtain the relative position relationship between the truss and surrounding obstacles during the truss lifting process;

[0043] C. Achieve precise connection between truss column foot and truss support;

[0044] The specific usage methods include:

[0045] Step 1: Connect the acoustic laser composite rangefinder transmitting device (1), the laser rangefinder receiving device (2), the three-dimensional scanner, and the computer (4) to a power source and confirm that they are operating normally and have sufficient power;

[0046] Step 2: Connect the three-dimensional scanner, the transmitting device data signal receiver (9), and the receiving device data signal receiver (13) to the computer (4), and check whether the data transmission is correct;

[0047] Step 3: Install the acoustic laser composite rangefinder transmitter (1) to the base of the truss column, with the installation position being around the base of the column;

[0048] Step 4: Install the laser rangefinder receiving device (2) to the truss support, with the installation position being around the support;

[0049] Step 5: Use a three-dimensional scanner (3) to scan the overall shape of the truss column foot and the truss support, and transmit the data to a computer (4), and form a solid three-dimensional model of the truss column foot and the truss support in the computer (4);

[0050] Step 6, start hoisting, first activate the sonic rangefinder (5) inside the sonic laser composite rangefinder transmitter (1), the sonic rangefinder generates ultrasonic waves, and the ultrasonic waves are reflected back to the rangefinder after encountering an obstacle, thereby obtaining the distance between the obstacle and the rangefinder, and the sonic rangefinder (5) obtains the distance between the obstacle and the truss column foot and transmits it to the computer (4), and the computer (4) model displays the surrounding environment of the truss column foot in real time. There are four sonic laser composite rangefinder transmitters (1) installed on the four sides of the truss column foot, and the environment on all four sides of the truss is detected; if the truss is too close to the surrounding obstacles, it will be displayed in real time on the computer (4), and the hoisting state will be adjusted accordingly to prevent the truss from colliding with the obstacles;

[0051] Step 7: After the truss column foot moves to the top of the support, the laser rangefinder (6) inside the acoustic laser composite rangefinder transmitting device (1) is activated, and the position of the truss column foot is preliminarily adjusted so that the laser emitted by the laser rangefinder (6) is irradiated on the laser rangefinder receiving device (2). The acoustic laser composite rangefinder transmitting device (1) transmits the laser emission time to the computer (4), and the laser rangefinder receiving device (2) transmits the laser arrival time to the computer (4). The accurate distance between the four sides of the truss support and the four sides of the truss column foot is calculated based on the time difference. When the distance between the four sides is within the error allowable range, the truss slowly falls, otherwise the truss inclination angle is adjusted;

[0052] Step 8: The laser rangefinder receiving device (2) transmits the position of the laser landing point to the computer (4), compares the laser landing point position with the truss column foot and the truss support model, and obtains the size of the horizontal deviation distance between the truss column foot and the truss support; when the horizontal deviation is within the error allowable range, the truss slowly falls, otherwise the truss position is adjusted;

[0053] Step 9: The truss is slowly lowered. During the lowering process, the vertical distance and the horizontal distance between the acoustic laser composite rangefinder transmitting device (1) and the laser rangefinder receiving device (2) are monitored in real time by the computer (4). When the difference between the four distances is too large, the truss is stopped from falling and adjusted in time. After the adjustment is completed, the truss is continued to fall.

[0054] Step 10: When the truss column foot and truss support fit together, the truss hoisting is completed.

[0055] During the large-scale truss hoisting process, the present invention can monitor the relative position of the truss and surrounding obstacles in real time, enabling real-time position detection of the truss and surrounding obstacles. Even if the truss column foot is in a blind spot, the present invention and on-site operation can prevent it from colliding or scraping with surrounding obstacles, thus ensuring the safety and stability of the hoisting process. During the installation process, the relative position of the truss column foot and truss support can also be controlled in real time to ensure the accuracy of the connection between the two, laying a solid foundation for the smooth progress of subsequent construction. The present invention is also simple to operate and easy to install.

Claims

1. A method for using a positioning auxiliary device for steel truss hoisting, the positioning auxiliary device for steel truss hoisting comprising an acoustic laser composite rangefinder transmitting device (1), a laser rangefinder receiving device (2), a three-dimensional scanner, and a computer (4); wherein: The acoustic wave laser composite rangefinder transmitting device (1) is installed on the truss column foot, the laser rangefinder receiving device (2) is installed on the truss support, and the three-dimensional scanner and the computer (4) are handheld for use. The acoustic wave laser composite rangefinder transmitting device (1) has a built-in acoustic wave rangefinder (5), a laser rangefinder (6), a power supply (7), a transmitting device data signal transmitter (8), and a transmitting device data signal receiver (9); the laser rangefinder receiving device (2) includes a laser rangefinder receiver (10), a power supply (11), a receiving device data signal transmitter (12), and a receiving device data signal receiver (13); and the method of use includes: Step 1: Connect the acoustic laser composite rangefinder transmitting device (1), the laser rangefinder receiving device (2), the three-dimensional scanner, and the computer (4) to a power source and confirm that they are operating normally and have sufficient power; Step 2: Connect the three-dimensional scanner, the transmitting device data signal receiver (9), and the receiving device data signal receiver (13) to the computer (4), and check whether the data transmission is correct; Step 3: Install the acoustic laser composite rangefinder transmitter (1) to the base of the truss column, with the installation position being around the base of the column; Step 4: Install the laser rangefinder receiving device (2) to the truss support, with the installation position being around the support; Step 5: Use a 3D scanner to scan the overall shape of the truss column foot and the truss support, and transmit the data to the computer (4), and form a solid 3D model of the truss column foot and the truss support in the computer (4); Step 6, start hoisting, first activate the sonic rangefinder (5) inside the sonic laser composite rangefinder transmitter (1), the sonic rangefinder (5) generates ultrasonic waves, and the ultrasonic waves are reflected back to the sonic rangefinder (5) after encountering an obstacle, thereby obtaining the distance between the obstacle and the sonic rangefinder (5), and the sonic rangefinder (5) obtains the distance between the obstacle and the truss column foot and transmits it to the computer (4), and the computer (4) model displays the surrounding environment of the truss column foot in real time. There are four sonic laser composite rangefinder transmitters (1) installed on the four sides of the truss column foot, and the environment on all four sides of the truss is detected; if the truss is too close to the surrounding obstacles, it will be displayed in real time in the computer (4), and the hoisting state will be adjusted accordingly to prevent the truss from colliding with the obstacles; Step 7: After the truss column foot moves to the top of the support, the laser rangefinder (6) inside the acoustic laser composite rangefinder transmitting device (1) is activated, and the position of the truss column foot is preliminarily adjusted so that the laser emitted by the laser rangefinder (6) is irradiated on the laser rangefinder receiving device (2). The acoustic laser composite rangefinder transmitting device (1) transmits the laser emission time to the computer (4), and the laser rangefinder receiving device (2) transmits the laser arrival time to the computer (4). The accurate distance between the four sides of the truss support and the four sides of the truss column foot is calculated based on the time difference. When the distance between the four sides is within the error allowable range, the truss slowly falls, otherwise the truss inclination angle is adjusted; Step 8: The laser rangefinder receiving device (2) transmits the position of the laser landing point to the computer (4), compares the laser landing point position with the truss column foot and the truss support model, and obtains the size of the horizontal deviation distance between the truss column foot and the truss support; when the horizontal deviation is within the error allowable range, the truss slowly falls, otherwise the truss position is adjusted; Step 9: The truss is slowly lowered. During the lowering process, the vertical distance and the horizontal distance between the acoustic laser composite rangefinder transmitting device (1) and the laser rangefinder receiving device (2) are monitored in real time by the computer (4). When the difference between the four distances is too large, the truss is stopped from falling and adjusted in time. After the adjustment is completed, the truss is continued to fall. Step 10: When the truss column foot and truss support fit together, the truss hoisting is completed.

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