KR20190041444A - overhead crane having proximity sensor and visual alarm apparatus - Google Patents

Abstract

Disclosed is a movement warning device for an overhead crane. According to the present invention, the movement warning device for an overhead crane comprises: a crane beacon attached to the lower side of a crane body moving forward and backward along a driving rail; a visual warning device for the overhead crane installed in the crane body to design a warning phrase toward the lower side of the overhead crane; and a control unit to control the visual warning device in accordance with forward and backward movements of the crane body and to transmit a warning signal to a smartphone through the crane beacon when the smartphone of a worker is detected through the crane beacon. Accordingly, a worker can easily recognize an operation state and a moving direction of an overhead crane through vision and various warning signals, thereby providing an effect of securing safety during operation of the overhead crane.

Description

[0001] The present invention relates to an overhead crane having a proximity sensor and a visual alarm apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for warning the movement of an overhead crane, and more particularly to an overhead crane movement warning apparatus including a proximity sensor and a visual warning apparatus.

In general, a ceiling crane is a facility installed on a ceiling such as a factory or a warehouse, and transports objects within a factory or a warehouse.

Such a ceiling crane includes a running rail installed on an upper portion of a wall facing each other such as a factory or a warehouse, a transverse rail extending over the traveling rail and moving forward and backward along the traveling rail, And a hoisting device installed on the trolley.

Since the ceiling crane carries the object on the ceiling, it is difficult for the worker working under the ceiling crane to recognize the moving direction of the object, and there are risks such as falling objects or bumping into the worker.

Therefore, there is a need for a technique that informs the worker who is working at the bottom of the ceiling crane, that the operation status of the ceiling crane is known, so that the operator can pay attention.

To this end, a warning is issued when a ceiling crane is operated, and an operator is notified of the operation state of the ceiling crane so that the operator can pay attention.

However, since the ceiling crane according to the related art is only audibly displayed as a warning, in a noisy environment such as a factory, the operator may not recognize the warning indication, and the moving direction of the ceiling crane can be accurately recognized There is a drawback that it is difficult.

Korean Patent Publication No. 10-2015-0100172

An object of the present invention is to provide a movement warning device for a ceiling crane capable of warning a worker so that an operator can reliably recognize the operating state of a ceiling crane.

The solutions described herein are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

According to one aspect of the present invention for achieving at least part of the above objects, the present invention provides a laser processing apparatus comprising: a housing having a laser emitting opening at one side; Laser emitting means provided inside the housing and emitting a warning indication laser through the laser emitting opening; At least one heat dissipating unit provided in the housing and discharging the heat inside the housing to the outside; And an ultrasonic sensor provided inside the housing and sensing an object existing in a direction of emission of the laser emitted by the laser emitting means. The ultrasonic sensor is installed in the ceiling crane and is driven in conjunction with the operation of the ceiling crane, Provides a visual warning device for a ceiling crane that displays warning signs on the ground and structures below the ceiling crane.

In one embodiment, the heat dissipating means includes an inner radiating fin provided inside the rear surface of the housing; An inner radiating fan provided inside the housing and blowing air inside the housing toward the inner radiating fin; An outer radiating fin provided outside the rear surface of the housing and performing heat exchange with the inner radiating fin; And an outer heat dissipating fan disposed behind the outer heat dissipating fin and blowing air to the outer heat dissipating fin side.

Here, the laser emitting means may comprise at least one of a SD (Secure Digital) card mounted on the laser emitting means body, a controller for controlling the ceiling crane, a factory equipped with a ceiling crane, And may be configured to emit a warning indication based on the pattern data.

Further, in one embodiment, the laser emitting means may be operated in accordance with the ON / OFF operation of the magnet switch for sensing the forward and backward movement of the ceiling crane.

Further, in one embodiment, when the ultrasonic sensor senses an object, the laser emitting means may interlock with the ultrasonic sensor so as to emit a laser.

Further, in one embodiment, it is possible to further include a heat-insulating filler provided at an interval between the housing and the laser emitting unit to insulate the housing and the laser emitting unit.

According to another aspect of the present invention, there is provided a crane comprising: a crane main body for advancing and retracting along a running rail; At least one visual warning device installed on the crane main body and displaying a warning sign on the ground and the structure under the crane main body; And a control unit for controlling the visual warning device according to a forward operation and a backward operation of the crane body.

In one embodiment, the visual warning device includes a downward visual alert device provided at a lower end of the crane main body and displaying a warning indication toward the lower right of the crane main body; A front sight warning device provided at a front end of the crane main body to display a warning display toward the front of the crane main body; And a rear view warning device provided at a rear end of the crane body and displaying a warning indication toward the rear of the crane body.

Further, in one embodiment, the control unit operates the downward-view warning device and the front-view warning device when the crane main body advances, and when the crane main body is backward, As shown in FIG.

Further, in one embodiment, when the crane main body is reversed in the on-state of the front-side visual warning device, the control unit turns on the rear-side visual warning device and keeps the frontal visual warning device on for a predetermined time When the crane main body advances in the ON state of the rear sight warning device, the front sight warning device is turned on and the rear sight warning device is kept on for a predetermined time and then turned off have.

Further, in one embodiment, when the running of the crane body is stopped, the control unit may maintain the on-state for a predetermined period of time and then turn off the down-time visual warning apparatus, the front-time visual warning apparatus, .

In one embodiment, the front ultrasound sensor is provided in the front-side visual warning device and emits ultrasound waves to the front of the front-side visual warning device to sense an object. And a rear ultrasound sensor provided in the rear-view warning device for sensing an object by emitting ultrasound to the front of the rear-side visual warning device.

In addition, in one embodiment, when the crane body advances and the front ultrasonic sensor senses an object, the control unit causes the warning light to blink to emit, the crane body to move backward, and the rear ultrasonic sensor When the object is sensed, the front vision warning device and the rear vision warning device can be controlled so that the rear vision warning device flashes the warning indication.

According to another aspect of the present invention, there is provided a crane body including a crane main body for advancing and retreating along a running rail, a downward-view warning device provided at a lower end of the crane main body for displaying a warning sign directly below the crane main body, A front sight warning device provided at a front end of the crane main body for displaying a warning indication toward the front of the crane main body, and a rear sight warning device provided at a rear end of the crane main body for displaying a warning display toward the rear of the crane main body And an ultrasonic sensor for sensing an object by emitting ultrasonic waves in a running direction of the crane main body, the method comprising the steps of: detecting whether the crane main body is in operation; Controlling the downward visual alert device; Sensing a moving direction of the crane main body; And operating the front vision warning device and the rear vision warning device in accordance with the moving direction of the crane main body.

In one embodiment, the step of operating the front-view warning device and the back-side visual warning device may further include sensing an ON / OFF state of the visual warning device on the opposite side of the moving direction of the crane main body.

Further, in one embodiment, the on / off state sensing step of the opposite side visual warning device may include a step of, when the opposite side visual warning device is ON when the moving direction of the crane body is switched, And an off-delay step of keeping the on-state for a period of time and then turning off the transistor.

Further, in one embodiment, when an object is detected by the ultrasonic sensor, it may further include a step of blinking a warning indication of the front vision warning device and the rear vision warning device.

According to another embodiment of the present invention, a movement warning device for a ceiling crane includes a crane beacon attached to a lower portion of a crane body moving forward and backward along a running rail; A visual warning device for a ceiling crane installed in the crane main body and displaying warning phrases below the ceiling crane; A control unit for controlling the visual warning device according to a forward operation and a backward operation of the crane main body and transmitting a warning signal to the smartphone through the crane beacon when the operator's smartphone is detected through the crane beacon; . ≪ / RTI >

In this case, the warning signal may include a warning screen informing the movement of the crane beacon on the screen of the smartphone, a warning sound informing the movement of the crane beacon through the speaker of the smartphone, And a warning oscillation for informing the user of the warning.

The moving warning device for a ceiling crane may further include a plurality of rail beacons attached to both ends of the running rail. In this case, when the operator's smartphone is sensed through at least one of the rail beacons among the plurality of rail beacons, and when the crane main body moves to the detected position of the smartphone, The alarm beacon may be transmitted to the smartphone located in the mobile terminal.

In this case, the warning signal may be a warning screen informing the moving direction of the crane beacon on the screen of the smartphone or a warning screen informing the screen of the smartphone of the avoidance direction.

Meanwhile, when the operator's smartphone is detected through at least one of the plurality of rail beacons, the control unit determines whether the detected smartphone of the operator is a smartphone of the existing operator, It is possible to identify the smartphone of the entered worker.

Furthermore, the control unit may output a control signal for decelerating the movement of the crane body when the smartphone of the operator sensed in the moving direction of the crane body is detected for a predetermined time or longer.

INDUSTRIAL APPLICABILITY According to the present invention, an operator can easily recognize an operating state and a moving direction of a ceiling crane through visual and vibration sounds, and an operational safety of a ceiling crane can be secured.

The effects described in the present specification are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a front view of a ceiling crane according to an embodiment of the present invention.
2 is a bottom view of the ceiling crane shown in Fig.
3 is a front perspective view of a visual warning device according to an embodiment of the present invention.
4 is a rear perspective view of the visual warning device shown in Fig.
5 is a front view of the visual warning device shown in Fig.
6 is a side view of the visual warning device shown in Fig.
7 is a plan view of the visual warning device shown in Fig.
8 is a rear view of the visual warning device shown in Fig.
9 is a front view showing the interior of the housing of the visual warning device shown in Fig.
10 is an exploded perspective view of the visual warning device shown in Fig.
11 is a rear perspective view of a lower vision warning device provided in a ceiling crane according to an embodiment of the present invention.
12A, 12B and 12C are photographs of warning signs displayed by the visual warning device according to an embodiment of the present invention.
13 is a flowchart illustrating a visual warning method according to an embodiment of the present invention.
14 is an exemplary view of a movement warning device for a ceiling crane according to another embodiment of the present invention.
15 is a plan view of a ceiling crane equipped with a movement warning device for a ceiling crane according to another embodiment of the present invention.
16 is a flowchart showing a warning method according to still another embodiment of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Furthermore, the singular forms "a", "an," and "the" include plural referents unless the context clearly dictates otherwise.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First, a ceiling crane according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

1 and 2, a ceiling crane 100 according to an embodiment of the present invention includes a crane main body, a downward visual alert device 200a, a front visual alert device 200b, a rear visual alert device 200c A front ultrasound sensor 260a, a rear ultrasound sensor 260b, and a controller.

The crane main body includes a transverse rail 120 connected between traveling rails 110 installed on both sides of a factory or a warehouse and capable of moving forward and backward along the traveling rail 110, A trolley 130 movable transversely along the transverse rail 120 and a hoisting device 140 installed on the trolley 130. [

Further, the downward-sight warning device 200a may be provided at the lower end of the crane main body so as to display a warning indication directly below the crane main body.

The downward visual alert device 200a can display a warning sign (warning text, symbol, graphic, etc.) on the ground and the structure by irradiating the visible laser beam directly below the crane main body.

In one embodiment, the downward-view warning device 200a may be provided on both sides of each of the two traverse rails 120, but is not limited thereto.

In addition, the front sight warning device 200b may be provided at the front end of the crane body to display a warning display toward the front of the crane body.

The frontal view warning device 200b may be configured to display a warning indication by irradiating a visible laser similarly to the downward visual alert device 200a.

In one embodiment, the front vision warning device 200b may display a warning sign on the front side of the crane body.

Further, in one embodiment, the front vision warning device 200b may be provided at the front end of both sides of the transverse rail 120 of the crane body, but is not limited thereto.

The rear sight warning device 200c is provided at the rear end of the crane body and can display a warning display toward the rear of the crane body.

Such a rear-view warning device 200c can display a warning indication by irradiating a visible laser in the same manner as the above-mentioned lower-vision warning device 200a and the front-time warning device 200b.

In one embodiment, the rear vision warning device 200c can be configured to display a warning sign on the back side of the crane body.

Further, in one embodiment, the rear vision warning device 200c may be provided at the rear end of both sides of the transverse rail 120 of the crane body, but is not limited thereto.

The front ultrasonic sensor 260a is provided in the front sight warning device 200b and emits an ultrasonic wave in front of the front sight warning device 200b to detect an object existing in the front of the crane main body and the traveling rail 110 .

The rear ultrasonic sensor 260b is provided in the rear vision device 200c and emits ultrasound waves to the front of the rear vision device 200c to move the object behind the crane main body and the traveling rail 100 Can be detected.

In an embodiment, the front ultrasonic sensor 260a and the rear ultrasonic sensor 260b may be configured as a reflection type ultrasonic sensor having a transmitter and a water hammer as one unit.

The control unit (not shown) controls the operation of the crane main body according to the forward operation and the backward operation of the crane main body. The control unit (not shown) It is possible to control the rear ultrasonic sensor 260b.

In one embodiment, the control unit may be configured to operate the downward-sight warning device 200a and the front-view alarm device 200b when the crane main body is advanced. When the crane main body is backward, 200a and the rear view warning device 200c.

That is, when the crane main body is operated, the control unit can operate the downward visual alert device 200a, and when the crane main body moves along the running rail 110, the visual warning device 200 on the moving direction side can be operated .

Here, the control unit can turn off the visual warning device 200 disposed on the opposite side of the moving direction of the crane body.

Accordingly, the ceiling crane 100 according to an embodiment of the present invention includes a lower vision warning device 200a, a front view warning device 200b, and a rear view warning device 200b which are turned on / off in conjunction with the operation of the crane body, It is possible to visually inform the worker working under the ceiling crane 100 of the operating state and moving direction of the ceiling crane 100 through the visual warning device 200c.

Further, in one embodiment, when the running of the crane body is stopped, the control unit keeps the downward visual warning device 200a, the frontal visual warning device 200b, and the rear visual warning device 200c ON for a preset time And then turned off.

In other words, the control unit can set the off-delay so that the visual warning devices 200a, 200b, and 200c, which were in the on state before the crane main body is stopped, are maintained in the ON state for a predetermined time after the stopping of the main body of the crane main body, have.

In this way, when there is an off-delay time after the crane body stops running, it is possible to prevent an accident that may occur due to the operator entering the dangerous area and the traveling track of the crane when the crane immediately runs again after stopping.

In addition, the control unit can operate the front ultrasonic sensor 260a according to the operation of the front vision alarm device 200b and operate the rear ultrasonic sensor 260b according to the operation of the rear vision alarm device 200c.

In one embodiment, when an object is detected in front of the crane body by the front ultrasonic sensor 260a when the crane main body is advanced and the front sight warning device 200b is operated, the front sight warning device 200b, May cause the warning indication to flash off.

Similarly, when an object is detected on the rear side of the crane body by the rear ultrasonic sensor 260b in a case where the crane main body is backward and the rear vision warning device 200c is operated, the rear vision warning device 200c displays a warning To be blinked and emitted.

The ceiling crane 100 according to an embodiment of the present invention operates actively to alert a worker by flashing a warning indication when there is an operator or an obstacle in the traveling direction of the crane, There is an advantage to be able to do.

Meanwhile, in one embodiment, when the moving direction of the crane main body is changed, the control unit does not immediately turn off the visual warning device 200 disposed on the opposite side of the moving direction simultaneously with the movement direction of the crane main body, For a period of time and then turned off.

That is, when the crane main body is backed up in the ON state of the front sight warning device 200b, the controller turns on the rear sight warning device 200c and keeps the front sight warning device 200b on for a predetermined time And then turned off.

Conversely, when the crane main body advances in the ON state of the rear vision warning device 200c, the control unit turns on the front vision warning device 200b and keeps the rear vision warning device 200c ON for a predetermined period of time Can be turned off.

Here, the predetermined time may be set by a user.

In this way, when the delay time is set for the operation of turning off the front-side visual warning device 200b and the rear-side visual warning device 200c when switching the moving direction of the crane main body, the crane main body advances in a short time It is possible to prevent the user from causing confusion because the warning indication is flickered a number of times in front of and behind the crane body when the backward movement is repeated.

Referring to FIG. 13, a visual warning method of a ceiling crane according to an embodiment of the present invention will be described.

For reference, the visual warning method of a ceiling crane according to an embodiment of the present invention includes a downward visual alert device 200a (see FIG. 1) included in a ceiling crane 100 according to an embodiment of the present invention, An operation algorithm of a control unit for controlling the front vision warning device 200b, the rear vision warning device 200c, the front ultrasonic sensor 260a and the rear ultrasonic sensor 260b.

Accordingly, the ceiling crane in which the visual warning method according to an embodiment of the present invention is implemented includes the crane main body, the downward visual alert device 200a, the front visual alert device 200b, the rear visual alert device 200c, And a ceiling crane 100 including a sensor 260a and a rear ultrasonic sensor 260b.

As shown in FIG. 13, first, whether or not the crane main body is activated is detected (S110).

Here, the operation judged as the operation of the crane main body includes the forward and backward movement of the crane body, the operation of the trolley 130, and the operation of the hoisting device 140.

On the other hand, the on / off state of the downward-angle vision device 200a can be controlled depending on whether the crane main body is operated or not (S120).

If the crane main body is not operated, the downside visual warning device 200a is turned on. On the contrary, if the crane main body does not operate, the downside visual warning device 200a, the frontal visual warning device 200b, 200c may be turned off.

Thereafter, the moving direction of the crane main body can be sensed (S130).

In addition, the front vision alarm device 200b and the rear vision alarm device 200c may be operated according to the moving direction of the crane main body (S140).

Here, when the crane main body advances, the front vision alarm device 200b and the front ultrasonic sensor 260a are operated. When the crane main body is backward, the rear vision alarm device 200c and the rear ultrasonic sensor 260b operate .

When the front vision warning device 200b or the rear vision warning device 200c is operated, the on / off state of the visual warning device 200 on the opposite side of the moving direction of the crane main body can be sensed (S150).

Here, the opposite side vision warning device 200 corresponds to the rear vision warning device 200c when the crane main body advances, and the front side vision warning device 200b when the crane main body is backward.

On the other hand, in the on / off state sensing step of the opposite side vision warning device 200, when the opposite side vision warning device 200 is in the ON state when the moving direction of the crane body is switched, And may be turned off after the ON state is maintained for a predetermined time (S160).

That is, when the opposite side visual warning device 200 is turned on at the time when the moving direction of the crane body is switched, the opposite side visual warning device 200 is not turned off at the same time as the moving direction of the crane main body is switched, A delay time can be given for turning off the visual alert device 200. [

This makes it possible to prevent the warning indication from flickering a number of times in front of and behind the crane body when the crane main body repeats forward and backward in a short time for finely adjusting the position as described above.

Meanwhile, in the visual warning method according to an embodiment of the present invention, when an object is detected in the traveling direction of the crane body by the front ultrasonic sensor 260a and the rear ultrasonic sensor 260b while the crane main body is traveling, And flashing a warning indication of the visual warning devices 200b and 200c which emit warning signs in the traveling direction of the crane body among the device 200b and the rear visual warning device 200c.

Next, a visual warning device according to an embodiment of the present invention will be described with reference to FIGS. 3 to 10. FIG.

The visual warning device 200 according to an embodiment of the present invention can be installed in the ceiling crane 100 and driven in conjunction with the operation of the ceiling crane 100, Display can be displayed.

The ceiling crane 100 according to one embodiment of the present invention includes a lower vision warning device 200a included in the ceiling crane 100 according to an embodiment of the present invention described above with reference to FIGS. ), A front-view warning device 200b and a rear-view warning device 200c.

3 to 10, the visual warning device 200 according to an embodiment of the present invention includes a housing 210, a laser emitting unit 220, a heat dissipating unit, a coupling frame 240, and a heat insulating filler 250, and may further include an ultrasonic sensor 260.

The housing 210 constitutes an appearance of the visual warning device 200 according to an embodiment of the present invention and includes a laser emitting unit 220, an inner radiating fin 231, and an inner radiating fan 232 Shaped member having an inner space that can be opened or closed.

In one embodiment, the housing 210 may be configured as a box with front and rear openings, and may include a front cover 211 and a rear cover 215 mounted on the front and rear openings, respectively.

In one embodiment, the front cover 211 may include a discharge opening 213 through which a visible laser emitted from the laser emitting means 220, which will be described later, may exit the housing 210.

Also, in one embodiment, the prot cover may be provided around the emission opening 213 to protect the lens of the laser emitting means 220 from the external element and to prevent the visible laser from interfering with external light, 212 may be provided.

The rear cover 215 may be provided on the rear surface of the housing 210 to be openable and closable through a hinge member 216.

In addition, the housing 210 may be provided with a locking device 217 for locking the rear cover 215 when the rear cover 215 is closed.

Meanwhile, the laser emitting means 220 is provided inside the housing 210 and can emit a warning indication laser through the emitting opening 213.

The laser emitting means 220 may emit a warning indication of an image preset by the user to the visible laser.

For example, the laser emitting means 220 may include a SD (Secure Digital) card mounted on the main body of the laser emitting means 220, a controller for controlling the ceiling crane 100, Of the integrated disaster prevention system according to one embodiment of the present invention.

That is, the laser emitting means 220 may be one of a method of replacing the SD card directly mounted on the main body of the laser emitting means 220, a method of controlling through a ceiling crane controller, and a method of controlling through an integrated disaster prevention system of a factory or a warehouse Through the above method, the emitting laser pattern can be changed or controlled.

Also, in one embodiment, the laser emitting means 220 may be configured to automatically operate according to the ON / OFF operation of the magnet switch sensing the forward and backward movement of the ceiling crane 100, But may be remotely controlled by a user by wire or wirelessly.

The heat dissipating unit 230 may be disposed in the housing 210 to discharge the heat inside the housing 210 to the outside.

In one embodiment, the heat dissipating means 230 may include an inner radiating fin 231, an inner radiating fan 232, an outer radiating fin 235, and an outside radiating fan 236.

The inner radiating fin 231 may be coupled to the inside of the rear cover 215 to be provided on the inner side of the rear surface of the housing 210 as shown in FIG.

The inner heat dissipation fan 232 is coupled to the rear cover 215 and is provided inside the housing 210 so that the air inside the housing 210 can be blown toward the inner heat dissipation fin 231.

The heat inside the housing 210 can be transmitted to the inner radiating fin 231 through the inner radiating fin 231.

The outer radiating fin 235 may be coupled to the outer side of the rear cover 215 and may be provided outside the rear surface of the housing 210.

The outer radiating fins 235 can exchange heat with the inner radiating fins 231 through the rear cover 215. That is, the heat of the inner radiating fin 231 can be transmitted to the outer radiating fin 235 via the rear cover 215.

The outer heat-dissipating fan 236 may be provided on the outer side of the rear cover 215 and behind the outer heat-dissipating fin 235.

The outside radiating fan 236 can blow outside air to the outside radiating fin 235 side to cool the outside radiating fin 235.

Heat inside the housing 210 can be transferred to the inner heat dissipating fan 232, the inner heat dissipating fins 231 and the outer heat dissipating fins 235 through the heat dissipating means 230 and transmitted to the outer heat dissipating fins 235 The heat can be discharged to the outside of the housing 210 through the air blown by the outside heat-dissipating fan 236.

3 to 10, the visual warning device 200 shown in FIG. 11 is provided with only two heat radiation means 230. However, the visual alert device 200 shown in FIGS. .

The type having a plurality of heat dissipating means 230 can be applied to the case where the visual warning device 200 is exposed to high temperature depending on the installation environment.

For example, since the lower vision warning device 200a, which is installed below the ceiling crane 100 that carries a ladle at a steel mill and is disposed close to the ladle, is exposed to high temperature, A plurality of heat dissipating means 230 may be provided.

The coupling frame 240 is rotatably mounted on the housing 210 and can couple the housing 210 to the body of the ceiling crane 100.

In one embodiment, the coupling frame 240 may be rotatably mounted on a side surface of the housing 210 in a vertical direction, and may be rotatably coupled to the body of the ceiling crane 100 in a lateral direction.

Accordingly, the housing 210 can be vertically and horizontally adjustable.

In addition, in one embodiment, the coupling frame 240 is rotatably coupled to the coupling plate 218 provided on the side surface of the housing 210 with a rotation axis, and a plurality of fixing bolt holes 244).

In this coupling frame 240, the bolt is fastened to a part of the plurality of fixing bolt holes 244 and is fixed to the coupling plate 218, so that the rotation of the coupling frame 240 is limited and the rotation angle of the housing 210 can be fixed.

Also, the coupling frame 240 may have a fixing bolt hole 242 at a coupling portion with the body of the ceiling crane 100.

9 and 10, the heat insulating filler 250 may be provided at a distance between the housing 210 and the laser emitting unit 220 to insulate the housing 210 and the laser emitting unit 220 .

That is, the heat insulating filler 250 can prevent the heat of the housing 210 heated by the external environment from being transferred to the laser emitting unit 220, so that the laser emitting unit 220 is not damaged by the high temperature .

For example, the heat insulating filler 250 may be formed of glass fibers that surround the body of the laser emitting unit 220 and fill the inside of the housing 210, but the present invention is not limited thereto.

The ultrasonic sensor 260 is provided inside the housing 210 and can sense an object existing in a direction of emission of the laser emitted by the laser emitting means.

In one embodiment, the ultrasonic sensor 260 may be a reflective ultrasonic sensor having a transmitter and a water hammer as one unit as described above.

The ultrasonic sensor 260 may be configured to be operated in response to the operation of the laser emitting means in conjunction with the laser emitting means.

Also, in one embodiment, the laser emitting means may be configured to flash the laser when the ultrasonic sensor 260 senses an object ahead.

Accordingly, each warning device 200 according to an embodiment of the present invention can detect workers and obstacles existing in the direction of travel of the ceiling crane 100 when installed in the ceiling crane 100, It has the advantage of flashing the warning indication and positively displaying the risk to the operator.

12A, 12B and 12C, the visual warning device 200 according to an embodiment of the present invention displays the operating state and moving direction of the ceiling crane 100 in a visible warning display on the ground and the structure So that the ceiling crane 100 can be safely operated when the ceiling crane 100 is operated.

14 is an exemplary view of a movement warning device for a ceiling crane according to another embodiment of the present invention.

The moving warning device for a ceiling crane according to another embodiment of the present invention includes a crane beacon 300 attached to a lower portion of a crane body moving forward and backward along a traveling rail, the above-mentioned visual warning device for a ceiling crane 200, A control unit for controlling the visual warning device in accordance with a forward operation and a backward operation of the main body and transmitting a warning signal to the smartphone via the crane beacon when the operator's smartphone is detected through the crane beacon Time).

In the movement warning device for a ceiling crane according to another embodiment of the present invention, since the ceiling crane and the related components, the visual warning device 200 have already been described above, a repetitive description will be omitted and the crane beacon 300 and the control unit will be described.

The crane beacon 300 is a device capable of transmitting and receiving data wirelessly with a smartphone. Therefore, the crane beacon 300 can recognize whether there is a smartphone in its wireless communication range, and can transmit / receive data through wireless communication when the smartphone exists within its wireless communication range. The crane beacon 300 is attached to the underside of the crane body that moves forward and backward along the running rail. Therefore, the wireless communication range of the crane beacon 300 overlaps the moving radius of the overhead crane.

The control unit may control the warning signal to be transmitted to the smartphone through the crane beacon when the smartphone of the operator is detected through the crane beacon. As described above, since the radio communication range of the crane beacon 300 overlaps with the moving radius of the overhead crane, when the operator's smartphone is detected within the radio communication range of the crane beacon, the operator is located within the moving radius of the crane It can be judged. Therefore, the control unit can control the warning signal to be transmitted to the smartphone through the crane beacon.

At this time, the warning signal includes a warning screen informing the movement of the crane beacon on the screen of the smartphone, a warning sound informing the movement of the crane beacon through the speaker of the smartphone, And a warning oscillation for informing the user of the warning.

15 is a plan view of a ceiling crane equipped with a movement warning device for a ceiling crane according to another embodiment of the present invention.

According to another embodiment of the present invention, the moving warning device for a ceiling crane may further include a plurality of rail beacons (300a to 300d) attached to both ends of the running rail. The technical features of the plurality of rail beacons 300a to 300d are the same as those of the crane beacon 300 described above.

In this case, when the operator's smartphone is sensed through at least one of the plurality of rail beacons 300a to 300d, and the crane body moves to the detected position of the smartphone, The beacon can be controlled to be transmitted to the smartphone located in the direction of movement of the beacon.

The control unit can access the memory in which the information on the location where the plurality of rail beacons 300a to 300d are installed is stored in advance. Therefore, when the crane main body moves, the relationship between the moving direction of the crane main body and the direction in which the rain beacon is located can be known. That is, it is possible to know which lane beacon of the plurality of lane beacons 300a to 300d is approaching the moving direction of the crane main body. Therefore, if the smart phone is within the communication radius of the rain beacon in the direction in which the crane main body moves, it can be determined that there is an operator in the moving direction of the main body of the crane. Therefore, the control unit can control the smart beacon located in the moving direction of the crane main body to transmit a warning signal through the rail beacon.

In this case, the warning signal may be a warning screen informing the moving direction of the crane beacon on the screen of the smartphone or a warning screen informing the screen of the smartphone of the avoidance direction. The avoidance direction will naturally be opposite to the direction of movement of the crane.

Meanwhile, when the operator's smartphone is detected through at least one of the plurality of rail beacons, the control unit determines whether the detected smartphone of the operator is a smartphone of the existing operator, It is possible to identify the smartphone of the entered worker. At this time, when the crane moves, the control unit can recognize that the existing worker and the new entrant are recognized and transmit different warning signals. That is, if the controller recognizes a new entrant, it is determined whether the accessor is a crawler traveling direction. If the controller is an accessor in the crane traveling direction, the controller controls the deceleration of the crane and gives attention to the crane risk warning and the crane coordinator. On the other hand, if the controller recognizes the existing operator, the control unit recognizes the position of the existing operator and controls the deceleration of the crane and issues a crane risk warning if the position is in the crane traveling direction.

At this time, the control unit may output a control signal for decelerating the movement of the crane main body when the smartphone of the operator sensed in the moving direction of the crane main body is detected for a predetermined time or longer. It is obvious that the predetermined time may be set in various ways.

16 is a flowchart showing a warning method according to still another embodiment of the present invention.

In step S210, the control unit detects whether the crane is operating. Next, in step S220, the controller detects that a smartphone exists in a communication radius of the crane beacon. Since the crane beacon is attached directly under the crane, it is necessary to judge the existence of the operator for safety first. Next, in step S230, a warning signal may be sent when a smartphone exists within the communication radius of the crane beacon. Next, in step S240, the control unit may sense the moving direction of the crane. In step S250, the controller may detect whether a smartphone exists within a communication radius of the rail beacon. In step S260, the controller can detect whether the smartphones existing within the communication radius of the crane moving direction and the rail beacon are in the same direction. That is, whether the operator is located in the direction in which the crane moves. Next, in step S270, the control unit may send an alert and escape signal to the smartphone of the operator.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims I would like to make it clear.

100: Ceiling crane
110: Running rail
120: transverse rail
130: trolley
140: hoisting device
200: Visual warning device
200a: Downward visual warning device
200b: forward vision warning device
200c: rear vision warning device
210: Housing
211: Front cover
212:
213: discharge opening
215: rear cover
216: hinge member
217: Locking device
218:
220: laser emitting means
230: Heat dissipation means
231: inner radiating fin
232: Inner heat-dissipating fan
235: outer radiating fin
236: Outside heat dissipation fan
240: Coupling frame
250: Insulating filler
260: Ultrasonic sensor
260a: front ultrasonic sensor
260b: rear ultrasound sensor
300: Crane beacon
300a to 300d: rail beacon

Claims (4)

A crane beacon attached to the underside of the crane body that advances and retracts along the running rail;
A visual warning device for a ceiling crane installed in the crane main body and displaying warning phrases below the ceiling crane;
A control unit for controlling the visual warning device according to a forward operation and a backward operation of the crane main body and transmitting a warning signal to the smartphone through the crane beacon when the operator's smartphone is detected through the crane beacon; The moving warning device for a ceiling crane. The method according to claim 1,
And a plurality of rail beacons attached to both ends of the running rail,
Wherein,
The smartphone of the worker is detected through at least one of the plurality of rail beacons, and when the crane body moves to the detected position of the smartphone, And to transmit a warning signal via the rail beacon. The method of claim 2,
Wherein,
When a smartphone of an operator is detected through at least one of the rail beacons of the plurality of rail beacons, it is determined whether the detected smartphone of the operator is a smartphone of an existing operator, And the mobile phone is identified as a mobile phone. The method of claim 3,
Wherein,
And outputs a control signal for decelerating the movement of the crane body when the smartphone of the operator sensed in the moving direction of the crane body is detected for a predetermined time or longer.

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