KR102494815B1 - Marking system for predicted dropping position of lifted objects on tower crane - Google Patents

Abstract

The present invention discloses a system for marking an expected fall position of a lifting object of a tower crane. The system for marking the expected fall position of a tower crane lifting object according to an aspect of the present invention is mounted on a trolley that moves horizontally along the jib of a tower crane and lifts and lowers cargo, and the lifting object fixed to the hook connected to the trolley falls a falling predicted position marking device for displaying an expected falling position of a lifted object based on wind (wind direction) information on a surface of the ground using light such as lighting; and a control unit installed in the cab of the tower crane, receiving information for predicting the expected fall position of the lifting object from the predicted fall position marking device, and controlling the predicted fall position marking device after calculation based on the received information. do.

Description

Marking system for predicted dropping position of lifted objects on tower crane}

The present invention relates to a system for marking the predicted fall position of a tower crane lifted object, and more particularly, by displaying lifting information and a moving radius of a lifted object on the surface of the ground according to the wind (wind direction) during the operation of a tower crane to ensure the safety of workers on the ground. It relates to a system for marking the predicted fall position of a tower crane lifting object that can prevent the occurrence.

A tower crane is a type of tower-like fixed crane that is installed and used for loading and unloading at ports, or is installed and used at shipyards and quay walls, and is particularly widely used at high-rise buildings or apartment construction sites.

A tower crane, which is essentially used to raise a building structure at a high-rise building or apartment construction site, is generally as shown in FIG.

1 is a schematic configuration diagram of a general tower crane. Referring to FIG. 1, a typical tower crane is installed upright on the ground in a vertical direction, and a tower mast (1) supporting a jib to be described later, an upper tower (2) installed on top of the tower mast (1), and an upper tower (2) A jib (3) coupled to one side of the tower and rotating around an axis on the tower, a trolley (4) mounted on the jib (3) and moving forward and backward along the jib (3), a hoist (4) installed on the trolley and moving up and down ( (not shown), a cab 5 for adjusting the operation of the tower crane, a counterweight 6 installed on one side of the jib on the opposite side of the trolley to maintain the center of the jib, and a hook 7 for hanging a lifting object. In the tower crane according to the prior art, a downward camera is installed on the hook for work efficiency and safety accident management and prevention during loading and unloading work, and the tower crane operator visually monitors safety in the operator's room of the tower crane. management is running.

However, the method as described above is performed by the driver of the tower crane, and there is a limit to perfect safety management. That is, if the driver's skill is insufficient, there is a high risk of safety accidents, and when the lifting object falls, the safety of ground workers cannot be guaranteed because the exact drop position of the lifting object cannot be known.

Korean Patent Publication No. 2013-0022577 (published on March 7, 2013)

The present invention has been proposed to solve the above problems, and when a lifting object connected to a hook falls during tower crane operation, the lifting information and the moving radius of the lifting object are displayed on the surface of the ground according to the wind (wind direction). The purpose is to provide a system for marking the expected fall position of a tower crane salvage object that can prevent serious accidents caused by colliding with a falling object in advance as the worker can move to a safe zone based on this information.

Other objects and advantages of the present invention may be understood from the following description, and will be more clearly understood by an embodiment of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations thereof set forth in the claims.

In order to achieve the above object, the system for marking the expected fall position of a tower crane lifting object according to an aspect of the present invention is mounted on a trolley that moves horizontally along a jib of a tower crane and lifts and lowers cargo, and a hook connected to the trolley. If the lifting object fixed to the fall, based on wind (wind direction) information, the expected fall position marking device for displaying the expected fall position of the lifted object on the surface of the ground using light such as lighting; and a control unit installed in the cab of the tower crane, receiving information for predicting the expected fall position of the lifting object from the predicted fall position marking device, and controlling the predicted fall position marking device after calculation based on the received information. do.

The predicted fall position of the lifted object displayed on the surface of the ground by the predicted fall position marking device is displayed in an elliptical shape using light such as lighting, and in the elliptical display, wind (wind direction) information, The distance information and the weight information of the lifted object are displayed on the ground to be identifiable, and the light indicating the danger radius emits a dark color of light or emits a fast blink in the case of a high risk. do.

The weight information of the lifting object may be rated load information of the lifting object connectable to the hook connected to the trolley.

A battery pack for checking a battery state of the device for marking the expected fall position is installed on the trolley, and the battery pack transmits battery state information of the device for marking the expected fall position to the control unit in real time.

The battery pack is composed of a solar panel and a wind turbine generator, and is characterized in that the battery is charged using sunlight and wind power.

The control unit receives battery state information of the device for marking the predicted fall position from the battery pack, and when the battery state information of the device for marking the expected fall position is below a preset threshold, the trolley is moved to the tower crane operator's room for rapid charging. It is characterized in that the battery pack is charged by docking with the device.

The hook is characterized in that a speaker capable of transmitting a warning broadcast is installed when the lifting object falls.

The predicted fall position marking device further includes an infrared camera for detecting a moving object and a thermal camera for detecting heat, and the device for marking the expected fall position predicts the fall of a salvaged object displayed on the surface of the ground using light. A moving object within the location is detected using the infrared camera, heat of the moving object is detected, and a danger warning broadcast is transmitted when the detected object is recognized as a person.

The speaker is characterized in that it transmits a danger warning broadcast only when a moving object within the expected fall position of the lifted object is recognized as a person by the marking device for the expected fall position.

The predicted fall position of the lifting object displayed on the surface of the ground by the predicted fall position marking device is characterized in that it is displayed as concentric circles drawing a plurality of circles having different radii.

The concentric circles are characterized in that they are displayed as concentric circles drawing circles having different radii by displaying a boundary line divided into a high-risk area, an area of interest, and a safety area, respectively, according to the radius of the circle centered on the salvaged object.

According to one aspect of the present invention, when a lifting object connected to a hook falls during tower crane operation, the lifting information and the moving radius of the lifting object are displayed on the surface of the ground according to the wind (wind direction) so that the ground worker can As it is possible to actively move to a safe zone, there is an effect of preventing a serious accident caused by a ground worker colliding with a falling object in advance.

The effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. .

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with specific details for carrying out the invention. It should not be construed as being limited to the matters described.
1 is a schematic configuration diagram of a general tower crane;
2 is a schematic functional block diagram of a system for marking an expected fall position of a lifting object according to an embodiment of the present invention;
Figure 3 is an example of the expected fall position marking of the lifting object in the tower crane according to an embodiment of the present invention,
4 is an example of an expected fall position marking displayed on the ground according to an embodiment of the present invention;
5 is an example of marking an expected fall position displayed on the ground according to various embodiments of the present disclosure.

The above objects, features and advantages will become more apparent through the following detailed description in conjunction with the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs can easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. In addition, as described in the specification, "... Terms such as “unit” refer to a unit that processes at least one function or operation, which may be implemented as hardware, software, or a combination of hardware and software.

Figure 2 is a schematic functional block diagram of a system for marking an expected drop position of a lifting object according to an embodiment of the present invention, Figure 3 is an example of marking an expected drop position of a lifted object in a tower crane according to an embodiment of the present invention, 4 is an example of marking an expected fall position displayed on the ground according to an embodiment of the present invention, and FIG. 5 is an example of a marking of an expected fall position displayed on the ground according to various embodiments of the present invention.

In describing this embodiment, communication may be performed by connecting each component wirelessly and/or wired.

Referring to FIG. 2 , the system for marking the expected fall position of the lifted object in the tower crane according to the present embodiment includes an estimated fall position marking device 110 and a control unit 210.

The expected falling position marking device 110 is installed on the tower crane to mark the expected falling position when the salvaged object in operation falls. In more detail, the drop prediction position marking device 110 is mounted on the trolley 100 that horizontally moves along the jib of the tower crane and lifts and lowers the cargo. The expected fall position marking device 110 displays the expected fall position of the lifted object on the surface of the ground when the lifted object in operation falls. More specifically, as shown in FIG. 3, the expected fall position of the lifted object is displayed on the ground. Mark (A) on the surface using light such as lighting or laser. At this time, the drop expected position marking device 110 predicts the fall of the lifted object such as various information, for example, wind (wind direction), weight information of the lifted object, height (distance from the lifted object to the ground), and the position of the hook 300 of the tower crane. After collecting information for position prediction and transmitting it to the control unit 210, the control unit 210 receives the estimated fall position calculated by a preset algorithm and displays it on the surface of the ground. At this time, the fall prediction position marking device 110 is provided with various sensors capable of recognizing the wind (wind direction), the weight information of the lifted object, the height, and the position of the hook 300 of the tower crane, and the above-described information through the provided sensors. can collect them.

On the other hand, the expected fall position marking device 110 marks the expected fall position of the salvaged object on the surface of the ground, but, as shown in FIGS. can be displayed At this time, a worker on the ground can prevent safety accidents that may occur when a salvaged object falls by moving outside the area indicated by the danger radius. At this time, within the elliptical danger radius display area, wind (wind direction) information, height information that is the distance information from the lifting object to the ground, and weight information of the lifting object may be displayed in character form on the ground so that workers on the ground can identify it. . Meanwhile, the weight information of the lifting object may mean rated load information of the lifting object connectable to the hook connected to the trolley. Here, the rated load refers to a load excluding the weight of a lifting component such as a hook when lifting a lifting object by a crane. At this time, the expected fall position marking device 110 may display the expected fall position in the form of a general light, but if it is determined that the fall position corresponds to a high risk, the color of the emitted light is emitted more intensely or a fast blinking effect is given to the ground worker. has the effect of raising awareness of The predicted fall position marking device 110 may determine high risk by setting a high-risk determination criterion in advance and comparing the preset reference information with information for predicting the fall position of the salvaged object collected in advance. For example, the drop prediction position marking device 110 illuminates the fall prediction position when the wind (wind direction) is 5 m/s and the collected wind (wind direction) information is 6 m/s, and the preset high risk determination criterion information is / Or, it is possible to indicate the danger radius using light such as a laser, but give a flickering effect so that ground workers can recognize dangerous situations more quickly and efficiently. By emitting light to increase the alertness of ground workers, there is an effect of more effectively preventing safety accidents that may occur when a salvage object falls.

In addition, the fall prediction position marking device 110 may further include an illuminance sensor, a distance sensor, and the like, and may adjust the brightness, size, and position of the marking area displayed on the surface of the ground using collected information.

Control unit 210 overall controls each component installed in the tower crane. According to one embodiment of the present invention, the control unit 210 is installed in the operator's cab of the tower crane to control the drop prediction position marking device 110 according to this embodiment. The control unit 210 receives information for predicting the expected fall position of the lifting object from the predicted fall position marking device 110, calculates the predicted fall position according to a preset algorithm based on the received information, and then calculates the calculated fall estimate. The position information may be transmitted to and controlled by the above-described drop predicted position marking device 110 .

On the other hand, according to an embodiment of the present invention, the system for marking the predicted fall position of the lifting object of the tower crane may further include a battery pack 120.

The battery pack 120 may be installed in the trolley 100 to check the battery state of the device 110 for marking the expected fall position. The battery pack 120 may transmit battery state information of the device for marking the predicted fall position 110 to the controller 210 in real time. On the other hand, when receiving battery state information of the expected fall position marking device 110 from the battery pack 120, the control unit 210 sets the received battery state information of the expected fall position marking device 110 as preset threshold information. can be compared with At this time, the control unit 210 moves the trolley 100 to the tower crane operator's cab 200 when the battery state information of the drop expected position marking device 110 is below a preset threshold, installed in the trolley 100, and the battery pack ( The battery pack 120 may be charged by docking a rapid charging fixing spring (not shown) connected to 120) with the rapid charging device 220. In addition, when charging of the battery pack 120 is completed, the controller 210 may move the trolley 100 to the last working position. On the other hand, since the drop expected position marking device 110 requires high power when marking the expected fall position, the battery pack 120 is composed of a solar panel and/or a wind turbine generator to provide natural light such as sunlight and/or wind power. The battery can also be charged at all times through an external energy source.

Meanwhile, in the present embodiment, the battery pack 120 is described as checking only the battery state of the device 110 for marking the expected fall position, but the present embodiment is not limited thereto, and battery state information of the speaker 310 described later may be checked.

In addition, according to an embodiment of the present invention, the system for marking the expected fall position of a tower crane lifting object may further include a speaker 310.

The speaker 310 is installed on the hook 300 and can transmit a warning broadcast when the lifting object falls. At this time, the speaker 310 may be operated by the operator of the tower crane operator's cab 200 to send out a warning broadcast, but according to the present embodiment, the operation can be performed in conjunction with the falling predicted position marking device 110 there is. In order to perform the above-described operation, the fall prediction position marking device 110 may further include an infrared camera for detecting a moving object and a thermal camera for detecting heat. At this time, the expected fall position marking device 110 detects an object moving within the expected fall position of the lifting object displayed on the surface of the ground using light using the infrared camera, and detects the heat of the moving object so that the detected object is a person. When recognized as , a danger warning broadcast may be transmitted through the speaker 310 . At this time, the speaker 310 transmits a hazard warning broadcast only when a moving object within the expected fall position of the lifting object is recognized as a person by the falling position marking device 110, thereby increasing the work efficiency of ground workers due to unnecessary broadcast transmission. This degradation can be prevented.

On the other hand, according to another embodiment of the present invention, the expected fall position of the lifted object displayed on the surface of the ground by the expected fall position marking device 110 draws a plurality of circles with different radii as shown in FIG. It can be displayed as concentric circles. At this time, the concentric circles may be displayed as concentric circles drawing circles having different radii by displaying the salvaged object as a boundary line divided into a high-risk area, an area of interest, and a safe area according to the radius of the circle. For example, as shown in FIG. 4, area A-1 is a high-risk area, area A-2 is an area of interest, and area A-3 is a safe area. can be indicated by light.

In addition, according to an embodiment of the present invention, the expected fall position marking device 110 displays the expected fall position of the lifted object displayed on the surface of the ground as an area, but it has been described that it is displayed in an elliptical shape, but is not limited thereto, and the wind ( Wind direction) The shape can be different according to the size of the information. For example, when there is no wind (wind direction) (0 m/s), as shown in (a) of FIG. If there is (2 m / s), as shown in (b) of Figure 5, the area of the expected fall position of the salvaged object can be displayed in a slightly distorted oval shape, and when the wind (wind direction) is strong (4 m / s) As shown in (c) of FIG. 5, it is possible to display the area of the expected fall position of the lifted object in an oval shape that is greatly distorted.

Meanwhile, although not shown in the embodiments of FIGS. 4 and 5, the direction of the wind (wind direction) may be further displayed using symbols such as arrows.

According to the present invention as described above, the lifting information and the moving radius of the lifting object are displayed on the surface of the ground according to the wind (wind direction), so that the ground worker can actively move to a safe zone based on this information, so that the ground worker can There is an effect of preventing serious accidents caused by collision with falling objects in advance.

Methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means, and may be recorded on a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, etc. alone or in combination. The computer-readable recording medium may include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., implemented in the form of a carrier wave (for example, transmission through the Internet) Also includes In addition, computer-readable recording media may be distributed to computer systems connected through a network to store and execute computer-readable codes in a distributed manner.

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, features described in separate embodiments of this specification may be implemented in combination in a single embodiment. Conversely, various features that are described in a single embodiment herein may be implemented in various embodiments individually or in combination as appropriate.

Although actions are described in a particular order in the figures, it should not be understood that such acts are performed in the particular order as shown, or that a series of sequential orders, or that all described acts are performed to achieve a desired result. Multitasking and parallel processing can be advantageous in certain circumstances. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. App components and systems described above may generally be implemented as packages in a single software product or multiple software products.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention to those skilled in the art to which the present invention belongs, and thus the above-described embodiments and It is not limited by drawings.

100: trolley
110: drop expected position marking device
120: battery pack
200: tower crane cab
210: control unit
220: rapid charging device
300: hook
310: speaker

Claims (11)

When a salvaged object mounted on a trolley that moves horizontally along the jib of a tower crane and lifts and lowers cargo and is fixed to a hook connected to the trolley falls, the expected drop position of the salvaged object is determined based on wind (wind direction) information on the surface of the ground. A drop prediction position marking device that displays using light such as lighting on; and
A control unit installed in the cab of the tower crane, receiving information for predicting the expected fall position of the lifting object from the predicted fall position marking device, and controlling the predicted fall position marking device after calculation based on the received information; And ,
The expected fall position of the lifted object displayed on the surface of the ground by the expected fall position marking device,
The danger radius is displayed in an elliptical shape using light such as lighting, and within the elliptical display, wind (wind direction) information, distance information to the lifting object, and weight information of the lifting object are displayed on the ground so as to be identifiable,
The light indicating the danger radius,
In the case of high risk, a system for marking the expected fall position of a tower crane lift, characterized in that it emits a darker color of light or emits by adding a quick blink. delete According to claim 1,
The weight information of the lifting object,
A system for marking the expected fall position of a tower crane lifting object, characterized in that the rated load information of the lifting object that can be connected to the hook connected to the trolley. According to claim 1,
A battery pack is installed on the trolley to check the battery state of the device for marking the predicted fall position,
The battery pack,
The expected fall position marking system of the lifting object of the tower crane, characterized in that for transmitting the battery status information of the expected fall position marking device to the control unit in real time. According to claim 4,
The battery pack,
A system for marking the expected fall position of a tower crane lifting object, which is composed of a solar panel and a wind turbine generator and charges the battery using solar and wind power. According to claim 4,
The control unit,
Receiving battery state information of the expected fall position marking device from the battery pack;
When the battery state information of the expected fall position marking device is less than a preset threshold, the trolley is moved to a tower crane operator's room and docked with a rapid charging device to charge the battery pack. system. According to claim 1,
The hook,
A system for marking the expected fall position of a tower crane lifting object, characterized in that a speaker is installed to transmit a warning broadcast when the lifting object falls. According to claim 7,
The drop expected position marking device,
Further comprising an infrared camera for detecting a moving object and a thermal camera for detecting heat,
The drop expected position marking device,
An object moving within the expected fall position of the lifted object displayed on the surface of the ground using light is detected using the infrared camera, and the heat of the moving object is detected, and when the sensed object is recognized as a person, a danger warning is provided through the speaker. A system for marking the expected fall position of a tower crane lifting object, characterized in that for transmitting a broadcast. According to claim 8,
the speaker,
Tower crane salvage expected fall position marking system, characterized in that for transmitting a danger warning broadcast only when a moving object within the expected fall position of the lifting object is recognized as a person by the expected fall position marking device. According to claim 1,
The expected fall position of the lifted object displayed on the surface of the ground by the expected fall position marking device,
A system for marking the expected fall position of a tower crane lifting object, characterized in that it is displayed as concentric circles drawing a plurality of circles with different radii. According to claim 10,
The concentric circle,
A system for marking the expected fall position of a tower crane salvaged object, characterized in that it is displayed as concentric circles drawing circles with different radii by displaying it as a boundary line divided into a high-risk area, an area of interest, and a safety area according to the radius of the circle centered on the salvaged object. .

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