KR20190090124A - Safety monitoring device of crane - Google Patents

Abstract

The present invention relates to a safety monitoring device for a crane, which can detect a dangerous region at a lower portion of a crane and, more specifically, to a safety monitoring device for a crane comprising: a crane main body; a trolley movably installed at the crane main body; a region display unit installed at the trolley to project light of a predetermined range to a lower portion of the trolley to display a safe area; and an image filming unit installed at the crane main body while filming the lower portion of the trolley. Here, the region display unit is characterized by comprising: a driving means coupled to a side surface of the trolley; a bracket rotatably coupled to the driving means; an opening unit coupled to the bracket and having a lower portion formed to be opened; an upper body having a height adjustment member provided on the outer circumferential surface of the opening unit; a light-emitting element installed in the upper body and projecting light; a lower body having a rotating member at an upper portion and coupled to the height adjustment member to be vertically movable; and an elongated groove which is formed to be recessed with a predetermined length at a lower portion of the lower body wherein the light projected by the light-emitting element passes through the elongated groove to form a safe area at the lower portion of the trolley.

Description

[0001] Safety monitoring device of crane [0002]

The present invention relates to a crane safety monitoring apparatus, and more particularly, to a crane safety monitoring apparatus capable of visually grasping a dangerous area under a crane.

Generally, in a manufacturing industry for the apparatus industry, in order to easily carry large-sized molds and semi-finished products and heavy materials containing raw materials or finished products at work sites, rails are installed in a workplace having a certain copper wire, So that various heavy objects can be easily transferred to a designated place by using a crane.

That is, the crane moves along a pair of rails installed in parallel in a work site. The crane includes a pair of support members mounted with wheels at the lower end, a beam connecting the upper ends of the two support members, And a hook which is vertically and vertically installed at the center of the bottom of the hoist. The hoist is moved along the rail while the hoist and the hook are moved to adjust the position of the hoist.

Such a crane is a facility as a collection of mechanical elements, mechanical devices, and electrical equipment, and it is important to ensure stability by carrying heavy objects, which leads to a major disaster when an accident occurs.

In order to solve the above-mentioned problem, in the conventional 'Cranes' 10-2015-0110884, a crane body, a trolley installed on the upper structure of the crane body to hoist and wind the hoist, An image projector that displays the expected position of the hoist on the ground so that the operator can visually grasp the expected position of the hoist hoisted and tuged by the trolley allows the operator to visually grasp the expected position of the hoist, So that the operator located can transport the hoist while securing the safety distance.

The conventional crane simply displays an expected position on the ground in the lower part of the trolley and can not accurately display the expected position of the heavy object depending on the size or type of the object to be hoisted. And other workers who are working or moving in the vicinity of the recommended position can not accurately recognize the safe area and are exposed to safety accidents.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a crane capable of visually grasping an area on the ground according to the size or type of a crane, And to provide a safety monitoring apparatus for a crane that can prevent the occurrence of a safety accident.

A safety monitoring apparatus for a crane according to the present invention comprises a crane main body, a trolley movably installed on the crane main body, an area display unit installed on the trolley, for illuminating a certain range of light to a lower portion of the trolley, And a video image capturing unit mounted on the crane main body and photographing a lower portion of the trolley, wherein the area display unit includes driving means coupled to a side surface of the trolley, And an upper body coupled to the bracket and having an opening at a lower portion thereof and a height adjusting member at an outer circumferential surface of the opening portion, a light emitting element provided inside the upper body, And the upper portion is provided with a rotating member, and the height adjusting member The lower body and is formed recessed at a predetermined length to the lower portion of the lower body, it is characterized in that the light passes through to be emitted by the light emitter comprises a elongated groove to form a safety zone in a lower portion of the trolley.

In addition, a plurality of the area display portions are formed at regular intervals on the side surface of the trolley, and each of the area display portions illuminates a lower portion of the trolley to display a safe area of a polygonal shape.

The driving means includes a driving motor coupled to a side surface of the trolley, a driving pulley axially coupled to the driving motor and rotated by a driving force of the driving motor, a driving pulley disposed at a predetermined distance from the driving pulley, And a driven pulley which is axially coupled to the driving pulley through one end thereof and is coupled to the bracket at one side thereof.

And a display unit connected to the image capturing unit for capturing the safe area formed from the area display unit and displaying an image transmitted from the image capturing unit.

The area display unit may further include a sensor for detecting a person or object in the safe area and a warning display unit installed at one side of the crane body for transmitting and receiving wirelessly with the detection sensor to emit a warning light or a warning sound .

The apparatus for monitoring safety of a crane according to the present invention is characterized in that the area display unit comprises a bracket, an upper body, a lower body and a light emitting element, and an elongated groove is formed in the lower part, It is possible to prevent a safety accident of a worker by displaying a reliable safe area on the ground below the trolley according to the size of the weight hoisted on the trolley by adjusting the distance and direction.

In addition, a plurality of area display sections are formed at regular intervals on the side surface of the trolley, and the light irradiated in the form of a line in each of them can be displayed in the shape of a section having the same cross section as that of the heavy article hoisted on the trolley. It is possible to visually inform the estimated position of the heavy object.

In addition, a crane operator or a neighboring worker is provided with a warning indicator for emitting a warning light or a warning sound in accordance with a detection sensor for detecting an obstacle such as a person or an object in a safe area indicated by an area display portion below the trolley, It is possible to prevent a safety accident in advance by providing a danger signal.

1 is a conceptual diagram showing a crane safety monitoring apparatus according to a preferred embodiment of the present invention.
2 is a perspective view illustrating an area display unit according to an exemplary embodiment of the present invention.
3 is a front view showing a region display unit according to a preferred embodiment of the present invention.
4 is a conceptual diagram illustrating an image capturing unit, a display unit, and a warning display unit according to an exemplary embodiment of the present invention.

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

In the following description of the present invention, however, the well-known functions or constructions will not be described in order to simplify the gist of the present invention.

1 is a conceptual diagram showing a crane safety monitoring apparatus according to a preferred embodiment of the present invention.

1, the crane safety monitoring apparatus according to the present invention includes a crane body 100, a trolley 200, a region display unit 300, and a photographing unit 400.

The crane safety monitoring apparatus of the present invention can repeatedly carry out a work of transporting a heavy object such as a container to a target point through hoisting and jacking operations within a certain work area.

In addition, the crane body 100 includes not only a gantry crane capable of moving along the ground but also a stationary tower crane, a house crane, an overhead crane, a tower crane, an engine room crane It is also possible to apply various types of cranes. Such a crane typically has a jib, a trolley, a hoist, etc. to carry heavy objects.

The trolley 200 is installed horizontally along a guide rail of the crane main body 100, and the rope and the hook are engaged with each other in the direction of the ground, that is, in the vertical direction, so that the heavy goods can be hoisted or unwound.

Next, the area display unit 300 displays a safe area SA by irradiating light of a certain range to the lower part of the trolley 200. When the heavy object hoisted by the trolley 200 is lifted at a predetermined interval So that light can be irradiated to a dangerous area such as a point where a heavy object falls due to breakage of a rope or a hook, thereby visually grasping the worker who is working on the ground.

The image capturing unit 400 captures a lower portion of the trolley 200 mounted on the crane main body 100 and preferably photographs the safe area SA displayed by the area display unit 300 do.

2 to 3, the area display unit 300 will be described in detail.

FIG. 2 is a perspective view illustrating an area display unit according to an exemplary embodiment of the present invention, FIG. 3 is a front view illustrating a region display unit according to an exemplary embodiment of the present invention, and FIG. The area display unit 300 includes a driving unit 310, a bracket 320, an upper body 330, a light emitting device 340, a lower body 350, and an elongated groove 360.

First, the driving means 310 is coupled to the side surface of the trolley, and drives the bracket 320 to rotate.

The driving unit 310 includes a driving motor 311 coupled to a side surface of the trolley, a driving pulley 312 coupled to the driving motor 311 and rotated by a driving force of the driving motor 311, And a driven pulley 314 disposed at a predetermined distance from the driving pulley 312 and axially coupled to the driving pulley 312 via a driving belt 313 and having one side coupled to the bracket 320, .

The driving motor 311 is coupled to a side surface of the trolley 200 and can be accommodated in a driving box 311a having a shape for protecting the driving motor 311 from foreign matter such as dust have.

The driving pulley 312 is axially coupled to the driving motor 311 and rotated by the driving force of the driving motor 311. A through hole is formed at one side of the driving box 311a and the driving motor 311 is coupled to the driving pulley 312 through the through hole and outside the driving box 311a.

The driven pulley 314 is spaced apart from the driving pulley 312 by a predetermined distance and is axially coupled to the driving pulley 312 through the driving belt 313. [ The drive belt 313 may be a timing belt or a chain belt and is wound around the drive pulley 312 and the driven pulley 314 and rotates by the power of the drive pulley 312 to rotate the driven pulley 314, .

The driven pulley 314 is engaged with the bracket 320 so that when the driven pulley 314 is rotated, the bracket 320 is rotated in the left and right directions with reference to FIG.

When the upper body 330 and the lower body 350 are pivoted by the driven pulley 314, the upper body 330 and the lower body 350 are rotated by the brackets 320 in the same direction.

The bracket 320 is rotatably coupled to the side of the trolley 200 so that the upper body 330 and the lower body 350 can be moved in the vertical direction of the trolley 200, It is possible to form the safety area SA.

Next, the bracket 320 is rotatably coupled to the driving means 310, and coupling holes 321 are formed on both sides. The bracket 320 is formed in a 'C' shape in cross section, and the upper body 330 and the lower body 350 are accommodated inside.

The upper body 330 is coupled to the bracket 320 via a coupling bolt 322 passing through the coupling hole 321 and has an opening (not shown) A height adjusting member (not shown) is provided.

At this time, the upper body 330 has a second coupling hole (not shown) corresponding to the coupling hole 321 formed on both sides thereof, and the coupling bolt 322 Is fastened to the bracket 320.

The light emitting device 340 is installed inside the upper body 330 and emits light. The light emitting device 340 may include a laser point, an illumination light, an LED, and the like. The light emitting device 340 may be mounted on the trolley 200 to be irradiated with light.

Next, the lower body 350 is provided with a rotary member (not shown) on the upper portion thereof and is coupled to the height adjusting member so as to be movable up and down.

The height adjusting member is formed of male threads on the outer circumferential surface of the opening, and the rotating member is formed of a female thread corresponding to the male thread to be engaged with the upper body 330.

The lower body 350 is coupled to the upper body 330 through the male thread and the female thread so that the lower body 350 is rotated to the left or right so as to move the lower body 350 toward the upper body 330. [ The lower body 350 can be moved upward in the direction of the upper body 330 and can be rotated to the right or left so as to move the lower body 350 downward in the direction opposite to the upper body 330.

The elongated groove 360 is formed at a lower portion of the lower body 350 with a predetermined length so that the light emitted from the light emitting device 340 passes therethrough to form a safety region SA at a lower portion of the trolley .

Accordingly, when the distance between the light emitting device 340 and the elongated groove 360 is reduced by moving the lower body 350 upward according to the movement of the height adjusting member, the distance between the light emitting device 340 The longer the laser line can be formed under the trolley 200. When the distance between the light emitting device 340 and the elongated groove 360 is shortened, It is possible to form the short laser line.

That is, the lower body 350 can be moved up and down according to the size of the heavy object to be trolled to the trolley 200, so that the safety area SA having the same size as the heavy object can be formed on the ground.

The elongated groove 360 formed in the lower portion of the lower body 350 may be rotated along the elongated groove 360 as the lower body 350 is rotated and irradiated by the light emitting element 340 The laser line formed by the light is also rotatable.

A plurality of the area display units 300 are formed at regular intervals on the side surface of the trolley 200. Each of the plurality of the area display units 300 irradiates the lower portion of the trolley 200 with light, The safety area SA of the shape is displayed.

The area display unit 300 includes four trolleys 200 on four sides and four lines are formed on the ground as shown in FIG. 1 to form a rectangular safe area SA Can be displayed.

However, the present invention is not limited to this, and the area display unit 300 may be provided at three or more sides of the trolley 200, so that various types of safe areas can be displayed according to the number.

As described above, the crane stability monitoring apparatus of the present invention is wirelessly connected to the image capturing unit 400 that captures the safe area SA formed under the trolley 200 from the area display unit 300, And a display unit 500 for displaying the image transmitted from the image capturing unit 400.

The display unit 500 receives the image signal of the image capturing unit 400 and displays it in a three-dimensional graphic form to an operator. The display unit 500 may be provided on the control terminal, and may be provided on the monitor of the operation room.

4, the image capturing unit 400 includes an image capturing module 410 for capturing the bottom of the trolley 200, a storage module 420 for storing images captured by the image capturing module 410, A transmission module 430 for transmitting the image stored in the storage module 420 to the display unit 500 and a reception module 440 for receiving the information of the display unit 500.

The display unit 500 includes a receiving unit 510 for receiving image information transmitted from the transmitting module 430, a display unit 520 for displaying an image received from the receiving unit 510, A control unit 530 for controlling an image displayed on the display unit 520 and a transmission unit 540 for transmitting a control signal of the control unit 530 to the image capturing unit 400.

Accordingly, the operator can grasp the current state of the lower portion of the trolley 200 through the display unit 500, analyze the image information stored in the storage module 420 to identify the cause of the accident .

In addition, the crane safety monitoring apparatus of the present invention includes a warning display unit 600, the area display unit 300 includes a detection sensor (not shown) for detecting a person or object in the safe area SA, The warning display unit 600 is installed at one side of the crane body 100 and transmits / receives wirelessly with the detection sensor to emit a warning lamp or a warning sound.

When the difference in the height of the light irradiated by the plurality of the area display units 300 occurs, the detection sensor is provided in each of the plurality of the area display units 300, Or an object has entered.

The detection sensor transmits an intrusion signal to the display area 500 and the warning display part 600 in the safe area SA. When the intrusion signal is received from the detection sensor 600, And informs the operator around the crane main body 100 of a warning sound or a warning light. The display unit 500 informs the operator operating the crane that the person or the object has entered the safe area SA, Provides a possible effect.

In addition, the crane safety monitoring apparatus according to the preferred embodiment of the present invention further includes a thermal image measurement unit 700 for measuring infrared rays inside the safe area SA formed through the area display unit 300. [

The thermal image measuring unit 700 senses a body temperature of a person approaching the safe area SA and transmits the measured body temperature information to the receiving unit 510. The control unit 530 controls the image capturing The image synthesized by the display unit 520 is displayed by synthesizing the image captured by the imaging unit 400 and the body temperature sensed by the thermal image measurement unit 700. [

Accordingly, the infrared image of the inside of the safe area SA is measured by the thermal image measuring unit 700 and compared with the detection sensor of the area display unit 300, thereby preventing malfunction of the intrusion signal.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Crane body
200: Trolley
300:
310: driving means
311: Driving motor
311a: drive box
312: Driving pulley
313: Drive belt
314: driven pulley
320: Bracket
321: Coupling ball
322: coupling bolt
330: upper body
340: Light emitting element
350: lower body
360: Long Sleeve Home
400:
410: photographing module
420: storage module
430: Transmission module
440: receiving module
500:
510: Receiving unit
520: display unit
530: control unit
540: Transmitting unit
600: Warning indicator
700: thermal image measuring unit
SA: safety zone

Claims (5)

A trolley mounted on the crane main body, an area display unit installed on the trolley, for displaying a safe area by irradiating light of a predetermined range to a lower portion of the trolley, And an image capturing unit for capturing an image of a lower portion of the crane,
The area display unit displays,
Driving means coupled to a side surface of the trolley;
A bracket rotatably coupled to the driving means;
An upper body coupled to the bracket, the upper body having an opening formed by opening the lower portion, and a height adjusting member provided on the outer peripheral surface of the opening;
A light emitting element provided inside the upper body and emitting light;
A lower body having a rotation member at an upper portion thereof and being vertically movably coupled with the height adjustment member; And
And an elongated groove formed in a lower portion of the lower body to have a predetermined length and to allow a light emitted from the light emitting device to pass therethrough to form a safety region under the trolley.
The method according to claim 1,
The area display unit displays,
Wherein a plurality of trenches are formed at regular intervals on side surfaces of the trolleys, and each of the trolleys illuminates a lower portion of the trolley to display a polygonal safe zone.
The method according to claim 1,
The driving means includes:
A driving pulley which is axially coupled to the driving motor and is rotated by the driving force of the driving motor; a driving pulley which is disposed at a predetermined distance from the driving pulley, And one side of which is coupled to the bracket.
The method according to claim 1,
And a display unit connected wirelessly with the image capturing unit capturing the safe area formed from the area display unit and displaying an image transmitted from the image capturing unit.
The method according to claim 1,
The area display unit displays,
Further comprising a detection sensor for detecting a person or an object in the safe area,
And a warning display unit installed at one side of the crane main body and transmitting / receiving radio waves to / from the detection sensor to emit a warning light or a warning sound.

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