KR102349192B1 - Safety Management System for Tower Crane - Google Patents

Abstract

A safety management system for a tower crane according to an embodiment of the present invention is proposed, the system comprising: a data collection device for collecting information related to the tower crane; an IoT gateway for transmitting information collected by the data collection device to a server device or for receiving data from the server device; and an integrated control and analysis device that diagnoses and analyzes the collected information, and generates a danger alarm or message when it is diagnosed as having a high degree of risk, wherein the data collection device includes weather information for an area where the tower crane is located; Collects the operation information of the tower crane, the structure fastening state information of the tower crane, and worker data information around the tower crane, and the integrated control and analysis device is the state of the tower crane according to at least one of the collected information Based on the risk determination result may be configured to be displayed on the display.

Description

IoT-based tower crane safety management system {Safety Management System for Tower Crane}

Recently, the introduction of tower cranes is continuously expanding and serious accidents are increasing, and 75% of the causes of serious accidents are due to insufficient work management and safety measures. Accordingly, a management system and an integrated management system for preventing tower crane accidents are required.

The present invention aims to propose a tower crane information management, tower crane risk analysis, and integrated monitoring operation management system at a construction site.

Thousands of casualties continue to occur due to tower crane accidents at construction sites. As a result of repeated large-scale casualties due to tower crane accidents, the Ministry of Employment and Labor announced "Tower Crane Serious Disaster Prevention Measures" that strengthens the responsibility for safety management by each subject, while also discussing all tower crane installation, dismantling, and lifting work nationwide. The local employment and labor office labor inspectorate directly inspects the entire work site and implements “close management of tower crane work”, and this year, there have been no major accidents caused by tower cranes, achieving the expected results.

Nevertheless, it is necessary to develop active preventive measures to prevent tower crane accidents. Therefore, we analyzed safety accidents related to tower cranes in order to prepare the most effective active prevention measures. As a result of analyzing the types of recent tower crane-related safety accidents, it was confirmed that about half occurred in the tower crane telescoping work. Tower crane telescoping work is to raise the telescoping cage to the required height by inserting a new mast into the empty space created by hydraulically lifting the telescoping cage during the installation stage.

Even in telescoping work, if we look at the major work stages, the detailed work that causes the most accidents is 48.2% (14 cases) of the mast upper bolt tightening work, followed by the telescoping cage lifting work 20.7% (6 cases), and the mast After assembly and hoisting, 13.8% (4 cases) of moving rail mounting work, 10.3% (3 cases) of pushing the mast seated on the moving rail, and 6.9% (2 cases) of tightening bolts under the mast were in that order (Table 1). As can be seen in Table 1, if these main work steps are further divided into detailed work steps, 31.0% (9 cases) of guide section pin removal work, 20.7% (6 cases) of telescoping cage lifting work using hydraulic device, and upper mast It was analyzed that disaster accidents occurred in the order of 17.2% (5 cases) of bolt work. In conclusion, among the six major tasks in Table 1, especially, the mast upper bolt fastening work and telescoping cage lifting work accounted for 68.9% of the total accident cases, and detailed tasks include removing guide section pins and hydraulic system. It was investigated and analyzed that the highest number of disaster cases occurred in the telescoping cage lifting operation using

main job title Detailed job name number of disasters Accident ratio (%) After mast assembly and hoisting, moving rail mounting work 1.1 Mast salvage 0 0 13.8 1.2 After installing the roller in the lower part of the mast, the bogie rail is seated 4 13.8 2. Balancing tower cranes with additional mast lift 2.1 Additional Mast Lifting 0 0 0 2.2 Balancing the Tower Crane 0 0 3. Telescoping cage lifting operation 3.1 Lifting the telescoping cage using hydraulics 6 20.7 20.7 4. Pushing the mast seated on the moving rail 4.1 Mast Push 3 10.3 10.3 4.2 Remove the lower part of the mast roller 0 0 5. Mast lower bolt tightening work 5.1 Temporary bolt assembly 0 0 6.9 5.2 Bolting with bolt fasteners 2 6.9 6. Mast upper bolt tightening operation 6.1 Mast upper bolt operation 5 17.2 48.2 6.2 Guide section pin removal 9 31.0 Sum 29 100.0 100

We would like to propose a method to solve the above problems. More specifically, it is intended to propose a safety management system for preventing safety accidents that may occur in the mast upper bolt fastening work and telescoping cage lifting work, and more generally, to prevent or manage tower crane related safety accidents. We would like to propose a safety management system.

The problems to be solved to be achieved in the present invention are not limited to the problems to be solved, and other problems not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

A safety management system for a tower crane according to an embodiment of the present invention is proposed, the system comprising: a data collection device for collecting information related to the tower crane; an IoT gateway for transmitting information collected by the data collection device to a server device or for receiving data from the server device; and an integrated control and analysis device that diagnoses and analyzes the collected information, and generates a danger alarm or message when it is diagnosed as having a high degree of risk, wherein the data collection device includes weather information for an area where the tower crane is located; Collects the operation information of the tower crane, the structure fastening state information of the tower crane, and worker data information around the tower crane, and the integrated control and analysis device is the state of the tower crane according to at least one of the collected information Based on the risk determination result may be configured to be displayed on the display.

Additionally or alternatively, it further comprises a sensor device for obtaining information on the fastening state of the structure of the tower crane, wherein the sensor device is for detecting the length or fastening shape of a pin or bolt for supporting the structure of the tower crane It may include a sensor, a controller for receiving the information obtained from the sensor and transmitting it to the data collection device, and a fixing bracket for fixing the sensor device to the tower crane.

Additionally or alternatively, the sensor device may be installed in a telescoping cage of the tower crane.

Additionally or alternatively, the controller may receive power from a power supply device of the driver's seat of the tower crane to supply power to the sensor, and may receive a detection value from the sensor and transmit it to the data collection device.

Additionally or alternatively, the sensor device may detect a fastening state between a mast and a mast of the tower crane, a fastening between a support shoe and a mast, or a fastening state between a turntable and a mast.

Additionally or alternatively, the integrated control and analysis device may generate a push alarm message including the risk determination result.

Additionally or alternatively, the driving information of the tower crane includes GPS-based location information, the inclination of the tower crane, altitude information of the tower crane, operation detection information of the driver's seat of the tower crane, and a power input state input to the tower crane and short circuit conditions.

The above problem solving methods are only some of the embodiments of the present invention, and various embodiments in which the technical features of the present invention are reflected are based on the detailed description of the present invention to be described below by those of ordinary skill in the art can be derived and understood as

According to the present invention, there is an effect of preventing accidents by monitoring the current state of the tower crane at the construction site in detail and generating an alarm, message, etc. when the risk of an accident increases, so that follow-up measures can be taken.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included as a part of the detailed description to help understand the present invention, provide embodiments of the present invention, and together with the detailed description, explain the technical spirit of the present invention.
1 shows a block diagram of a safety management system for a tower crane according to an embodiment of the present invention.
2 to 4 show an example in which the tower crane structure fastening state monitoring means according to the present invention is installed.
5 is a block diagram of a sensor device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be implemented in various other forms. The terminology used herein is for the purpose of helping the understanding of the embodiments, and is not intended to limit the scope of the present invention. Also, singular forms used hereinafter include plural forms unless the phrases clearly indicate the opposite.

1 shows a block diagram of a safety management system for a tower crane according to an embodiment of the present invention.

Various data 10 for the system may be collected by the data collection device 20 . The various data includes weather information 11 of the location where the tower crane is installed, operation information 12 of the tower crane, information on the structure fastening state of the tower crane 13, and/or information about workers around the tower crane ( 14) and the like. The data collection device may be connected to a server device such as a cloud server through the IoT gateway 30 , and may be connected to an integrated control and analysis device 40 of a field office or central integrated control room connected to the server device. Through this, the collected various data may be transmitted to the device 40 in real time or output by an output means such as displayed on the device 40 or a separate display.

In addition, the integrated control and analysis device 40 may be wirelessly connected to a mobile terminal or the like, and an alarm or push alarm message generated from the device 40 may be transmitted to the mobile terminal or the like. For example, according to the collected weather information, when the wind speed exceeds a preset reference value, the device 40 may generate a warning alarm or message informing that there is a risk in the operation, and display it on the display or may be transmitted to another terminal. The warning alarm or message may be set to be transmitted to the driver's seat side of the tower crane and output through an output means such as a display or speaker installed in the driver's seat.

In addition, separately from the warning alarm or message, a warning light connected to the integrated control and analysis device 40 or a warning light installed in the tower crane may be operated in response to a warning alarm indicating that there is a danger in the operation.

The weather information may include temperature, humidity, wind speed or direction, fine dust concentration information of the area where the tower crane is installed, and the driving information includes GPS location information (latitude and longitude) where the tower crane is installed, the tower crane It may include information on inclination or altitude of the driver's seat, motion detection of the driver's seat, external power input status and short circuit status, trolley movement, jib turning, hook block descent information, and the like. The structure fastening state information may include monitoring information on the fastening state of the mast of the tower crane, support shoes, etc., and the surrounding worker information may include location information of workers around the tower crane.

The data collection device and the integrated control and analysis device can interact through an IoT gateway, and the IoT gateway is connected to an IoT platform (server device) through a wireless communication network to transmit and receive the various data 10 and the It is possible to transmit/receive analysis results based on various data. The integrated control and analysis device may be connected to a big data platform (not shown) for diagnosis and analysis in order to derive analysis results based on the various data to derive the analysis results.

The big data platform can derive analysis results including various information from the various data, but in the present invention, the tower crane-related risk analysis is mainly considered.

The integrated control and analysis device may classify the risk of the tower crane into a plurality and output a risk warning corresponding to the risk analysis result. The degree of risk is based on the state of the tower crane using one or more of the various collection data collected by the data collection device described above, and may be derived according to a big data-based intelligent risk factor derivation algorithm.

In addition, the integrated control and analysis device may output and store the analysis result in the form of a report, or output and store the analysis result as a file of a specific format such as an Excel file.

2 to 4 show an example in which the tower crane structure fastening state monitoring means according to the present invention is installed.

FIG. 2 shows an example in which the sensor device 20 is installed in the telescoping cage part to check whether the support shoe and the mast are properly coupled to each other. The sensor device may be fixed to the upper four sides of the telescoping cage with fixing brackets.

The sensor device may be made of one of various types, and preferably includes a laser or ultrasonic sensor. In order to determine the connection state between the support shoe and the mast, the sensor device may detect a fastening shape, and transmit the detected value to the controller to determine whether the support shoe and the mast are properly fastened. let it be

3 shows an example in which the sensor devices 301, 302, 303, 304, 305, 306, 307, and 308 are installed in the telescoping cage part to check whether the mast and the mast are well coupled to each other. do. The sensor device may be fixed to the upper four sides of the telescoping cage with fixing brackets.

The sensor device may be formed of one of various types, and even in this case, it is preferable to include a laser or ultrasonic sensor. In order to determine the connection state between the mast and the mast, the sensor device may detect the fastening shape and the length of the pin or bolt, and transmit the detected value to the control unit to determine whether the mast is properly coupled to each other. make it possible

4 shows an example in which the sensor devices 401, 402, 403, and 404 are installed in the telescoping cage to check whether the turntable and the mast are properly coupled to each other. The sensor device may be fixed to the upper four sides of the telescoping cage with fixing brackets.

The sensor device may be made of one of various types, and preferably includes a laser or ultrasonic sensor. In order to determine the connection state between the turntable and the mast, the sensor device may detect the fastening shape and the length of the pin or bolt, and transmit the detected value to the controller to determine whether the turntable and the mast are properly coupled to be able to judge

5 shows a block diagram of the configuration of a sensor device applied to the present invention. The sensor device 500 includes a sensor unit 510 , a control unit 520 , and a communication unit 530 . The sensor unit may transmit a detection value to the control unit, and the control unit may receive power from the outside (eg, a power supply device for a driver's seat of the tower crane, etc.) and supply power to the sensor unit and the communication unit. The detection value may be transmitted to the data collection device through the communication unit. On the other hand, the sensor device may be mounted on the case, attached or fixed to the telescoping cage of the tower crane, etc. through a separate fixing bracket.

In the above specification, the "system" has been described as performing the corresponding method or procedure, but the "system" is only a name and the scope of rights is not subordinated thereto. That is, the method or procedure may be performed not only as a system but also as an apparatus, and the method or method may be performed by software for video metadata editing or code readable by a computer or other machine, device, etc. .

In addition, as another aspect of the present invention, the above-described proposal or operation of the invention is performed by a "computer" (a comprehensive concept including a system on chip (SoC) or (micro) processor, etc.) Code that can be implemented, implemented or executed, or a computer-readable storage medium storing or including the code, or a computer program product, etc. a computer-readable storage medium including a computer-readable storage medium or a computer program product.

Claims (7)

As a safety management system for a tower crane,
a data collection device for collecting information related to the tower crane;
an IoT gateway for transmitting the information collected by the data collection device to a server device or for receiving data from the server device; and
Including an integrated control and analysis device that diagnoses and analyzes the collected information, and generates a danger alarm or message when it is diagnosed as having a high risk,
The data collection device collects location information of workers around the tower crane,
The integrated control and analysis device is configured to derive a risk determination result based on the status of the tower crane according to the collected information and display it on the display,
The risk determination result is one of the plurality of pre-classified risks of the tower crane, and the tower crane safety management system, characterized in that it is derived according to a big data-based intelligent risk factor derivation algorithm. According to claim 1, further comprising a sensor device for acquiring information on the structure fastening state of the tower crane,
The sensor device includes a sensor for detecting a length or a fastening shape of a pin or bolt for supporting the structure of the tower crane, a controller for receiving information obtained from the sensor and transmitting it to the data collection device, and the sensor device Tower crane safety management system, characterized in that it comprises a fixing bracket for fixing to the tower crane. The tower crane safety management system according to claim 2, wherein the sensor device is installed in a telescoping cage of the tower crane. The tower according to claim 2, wherein the controller receives power from a power supply device in the driver's seat of the tower crane to supply power to the sensor, and receives a detection value from the sensor and transmits it to the data collection device. Crane safety management system. The tower crane safety management system according to claim 2, wherein the sensor device detects the fastening between the mast and the mast of the tower crane, the fastening between the support shoe and the mast, or the fastening between the turntable and the mast. The tower crane safety management system according to claim 1, wherein the integrated control and analysis device generates a push alarm message including the risk determination result. According to claim 1, wherein the information related to the tower crane further comprises driving information of the tower crane, the driving information of the tower crane is GPS-based location information, the inclination of the tower crane, altitude information of the tower crane, the tower Tower crane safety management system, characterized in that it includes the operation detection information of the driver's seat of the crane, and the power input state and the short circuit state input to the tower crane.

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