KR102089730B1 - Wire rope damage position detecting appratus, crane having the same, and wire rope damage position detecting method - Google Patents

Abstract

The present invention provides a wire rope defect position detection device, a crane including the same, and a wire rope defect position detection method capable of easily measuring a defect position of a wire rope.
Wire rope defect position detection device according to an aspect of the present invention, in the wire rope defect position detection device of a crane including a drum on which the wire rope is wound, a defect detector for detecting whether the wire rope is defective, the drum It includes a rotation speed measuring device for measuring the rotation speed, and a control display unit for calculating and displaying a defect position of the wire rope according to the rotation speed of the drum.

Description

Wire rope defect position detection device, crane including the same, and wire rope defect position detection method {WIRE ROPE DAMAGE POSITION DETECTING APPRATUS, CRANE HAVING THE SAME, AND WIRE ROPE DAMAGE POSITION DETECTING METHOD}

The present invention relates to a device for detecting a defective position of a wire rope installed in a drum of an overhead traveling crane, a method of detecting the defective position of a crane and a wire rope including the same.

In general, the ceiling crane is the most widely used crane, and is installed and used on the ceiling of a large factory or warehouse, such as a steel mill, and a hook made from a trolley that freely moves to a required position on a rail attached to the ceiling. ) Or, by lifting an object to be wound with a weight such as a coil through an electromagnet, it is designed to be transferred to a target point.

Among the trolleys of overhead cranes that move the objects to be moved to any location while moving around along the rails installed on the ceiling, trolleys equipped with hoisting and traversing devices, in particular, crab or winch winch ), And a drum for winding a wire rope on which the wound is hung is installed in this crave. The wire rope wound around the drum moves up and down as the drum rotates and unloads. A hook for supporting the cargo is installed on the wire rope, and the hook may be installed on the wire rope through a pulley.

Since a large load is applied to the wire rope, it is very important to determine whether the wire rope is defective. To this end, various types of sensors for determining wire defects have been installed in the wire rope.

However, such a conventional sensor can determine whether or not a defect is present in the wire, but has a problem in that it is difficult to accurately locate the defect. When a defect is detected, a wire rope must be visually inspected, which is time-consuming and costly.

Republic of Korea Utility Model Publication No. 1997--0006676 (1997.07.01)

The present invention provides a wire rope defect position detection device, a crane including the same, and a wire rope defect position detection method capable of easily measuring a defect position of a wire rope.

Wire rope defect position detection device of a crane including a drum in which the wire rope is wound according to an aspect of the present invention, a defect detector for detecting whether the wire rope is defective, a rotation speed meter for measuring the rotation speed of the drum, And a control display unit that calculates and displays a defective position of the wire rope according to the number of revolutions of the drum.

Here, the rotation speed meter may be made of an encoder.

In addition, the defect detector may include a magnet surrounding the wire rope and a magnetic flux sensor for measuring the leakage magnetic flux of the defect site.

In addition, the defect detector may include a repair location transfer unit that receives the location information of the defect from the control display unit and moves the defective portion of the wire rope to a repairable location.

In addition, the repair position transfer unit includes a repair location search module for searching for a repair location closest to a defective location, a distance calculation module for calculating a distance between a defective portion and a repair location, and a transfer communication module for transmitting a transfer signal of the wire rope. It can contain.

In addition, the wire rope defect position detecting device may further include a marking member to form a mark on the wire rope when a defect signal is generated.

In addition, the marking member may be formed of a nozzle for spraying a marking material having a color.

In addition, the marking member may include a case in which paint is stored and a driving part that is rotatably coupled to one side surface of the case and moves the protruding roller and the case.

In addition, two marking members are installed on the defect detector, and the marking members may be disposed on upper and lower portions of the magnetic flux sensor, respectively.

The crane installed on the ceiling according to another aspect of the present invention, a drum installed rotatably, a wire rope wound on the drum, and a defect detector detecting whether the wire rope is defective and a rotation measuring the number of revolutions of the drum And a defect position detection device including a water meter and a control display unit for calculating a defect position of the wire rope according to the number of revolutions of the drum.

Here, the rotation speed meter may be made of an encoder.

In addition, the defect detector may include a repair location transfer unit that receives the location information of the defect from the control display unit and moves the defective portion of the wire rope to a repairable location.

According to another aspect of the present invention, a wire rope defect position detecting method including a drum in which a wire rope is wound is detected, while detecting whether the wire rope is defective, a sensing step of measuring the number of revolutions of the drum, and rotating the drum. It includes a calculating step of calculating the defective position of the wire rope according to the number, and a displaying step of displaying the defective position of the wire rope on the control display unit.

Here, the sensing step may measure the number of revolutions of the drum using an encoder.

In addition, the wire rope defect location detection method is carried out after the display step, and further comprising a transfer step of transferring the wire rope so that the defective portion of the wire rope is transferred to a repairable location by receiving information on the defective portion of the wire rope. can do.

As described above, according to an aspect of the present invention, a defect detector and a rotation speed meter are provided to easily measure whether a wire rope is defective and where the defect is.

1 is a view schematically showing a crane according to a first embodiment of the present invention.
2 is a longitudinal sectional view showing a defect detector according to a first embodiment of the present invention.
3 is a cross-sectional view showing a defect detector according to a first embodiment of the present invention.
4 is a flow chart for explaining a method for detecting a defective position of a wire rope according to a first embodiment of the present invention.
5 is a view schematically showing a crane according to a second embodiment of the present invention.
6 is a flowchart illustrating a method for detecting a defective position of a wire rope according to a second embodiment of the present invention.
7 is a longitudinal sectional view showing a defect detector according to a third embodiment of the present invention.
8 is a flowchart illustrating a method for detecting a defective position of a wire rope according to a third embodiment of the present invention.
9 is a longitudinal sectional view showing a defect detector according to a fourth embodiment of the present invention.
10 is a flowchart illustrating a method for detecting a defective position of a wire rope according to a fourth embodiment of the present invention.

The present invention can be applied to various transformations and can have various embodiments, and thus, specific embodiments will be illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present invention, terms such as 'include' or 'have' are intended to indicate that there are features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in this case, in the accompanying drawings, the same components are denoted by the same reference numerals as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the subject matter of the present invention will be omitted. For the same reason, some components in the accompanying drawings are exaggerated, omitted, or schematically illustrated.

Hereinafter, a crane according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 is a view schematically showing a crane according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a defect detector according to a first embodiment of the present invention, and FIG. 3 is a first view of the present invention It is a cross-sectional view showing a defect detector according to an embodiment.

1 to 3, the crane 10 according to the first embodiment of the drum 120, a wire rope 130, a rotating member 141, a support bracket 142, a defect position detection device (110). Meanwhile, the defect location detecting device 110 includes a defect detector 150, a rotation speed meter 160, and a control display unit 170.

The drum 120 is formed in a circular shape, and the wire rope 130 is wound on the outer circumferential surface of the drum 120. The drum 120 may be mounted on a support beam 145 installed on the ceiling of the workshop, and may be transported inside the workshop by the support beam 145. The support beam 145 may be installed to be movable along a rail (not shown) installed at the edge of the ceiling.

The rotating member 141 includes a motor and a reduction gear connected to the motor, and rotates the drum 120. The rotating member 141 may be connected to the drum 120 in series. However, the present invention is not limited to this, and the rotating member may be installed inside the drum.

The support bracket 142 is provided with a bearing therein to support the drum 120 so that the drum 120 can rotate easily and is fixedly installed on the support beam 145. The rotation speed meter 160 is installed in connection with the drum 120 to measure the rotation speed of the drum 120. The rotation speed meter 160 measures the number of rotations and the rotation angle of the drum 120 and transmits it to the control display unit 170. The rotation speed meter 160 may be made of a rotary type encoder, but the present invention is not limited thereto. The rotation speed meter 160 may be wirelessly connected to the control display unit 170 or may be connected by wire.

The wire rope 130 may be made of a steel wire, and is wound around the drum 120. A rotatable pulley 131 is installed on the wire rope 130, and a hook 132 for mounting the cargo is installed on the pulley 131.

On the other hand, the wire rope 130 is provided with a defect detector 150 for detecting a defect of the wire rope 130, two defect detectors 150 are respectively installed on the wire rope 130 supporting the pulley 131 do.

The defect detector 150 is formed in a circular shape, and a hole 150a into which the wire rope 130 is inserted is formed in the center. The wire rope 130 is installed to penetrate the defect detector 150. The defect detector 150 is installed inside the casing 151 and the casing 151 of a cylindrical shape, and radially arranged in the magnet 156 and the insertion tube 158 and the insertion tube 158 installed inside the casing 151. It is attached and includes a magnetic flux sensor 157 for detecting a leak magnetic flux, and a communication unit 159 for transmitting a signal of the magnetic flux sensor 157.

A bottom plate 153 in which a hole is formed is formed under the casing 151, and a top plate 152 in which a hole is formed is installed in the upper portion of the casing 151. Rollers 154 for reducing friction with the wire rope are installed in the holes of the upper and lower plates.

The insertion tube 158 is disposed at the center of the casing 151 and the wire rope 130 is fitted in the insertion tube 158.

The magnets 156 are respectively installed on the upper and lower portions of the casing 151, and are arranged radially. The upper and lower magnets 156 are assembled with polarities corresponding to each other in the vertical direction. That is, when the 'S' pole is fixed so that the 'S' pole is in contact with the insertion tube 158 around the insertion tube 158, the 'N' pole can be assembled to be in contact with the insertion tube 158 at the bottom. have. In addition, each magnet 156 is spaced appropriately to generate magnetic force up and down, and a magnetic flux sensor 157 is attached between the magnets 156 spaced up and down.

The magnetic flux sensor 157 may be attached to the outer surface of the insertion tube 158 in the center of the height direction of the insertion tube 158. The magnetic flux sensor 157 is a sensor that detects the leakage of the magnetic flux after magnetizing the wire rope 130, and a detailed description thereof will be omitted. The communication unit 159 is attached to the outside or inside of the casing 151, and transmits a signal to the control display unit 170 by wireless communication.

The control display unit 170 may be formed of a wireless terminal or a computer having a processor, and has a display indicating a defective location of the wire rope. The control display unit 170 calculates the position of the wire rope 130 where the defect is detected based on the signal transmitted from the rotation speed meter 160.

The defect position of the wire rope 130 may be calculated according to the diameter of the drum 120 and the number of revolutions of the drum 120. The defect position may be detected by calculating the length of the wire rope 130 increased or decreased according to the rotation of the drum 120 to the length of the wire rope 130 at the initial position (zero point) of the drum 120. In addition, the control display unit 170 displays the signal transmitted from the magnetic flux sensor 157 on the screen and determines whether a defect has occurred.

When a defect occurs in the wire rope 130, the magnetic flux sensor 157 generates an abnormal signal, and the signal is transmitted to the control display unit 170. The control display unit 170 determines whether the signal transmitted from the magnetic flux sensor 157 is abnormal. In addition, when it is determined that there is an abnormality, the control display unit 170 calculates the length of the wire according to the number of revolutions of the drum 120 and displays the location of the wire rope 130 where the defect has occurred. Accordingly, the operator can easily grasp the presence or absence of a defect in the wire rope 130 and the location of the wire rope 130 in which the defect occurred.

As described above, the crane 10 according to the first embodiment is provided with a defect detector 150 and a rotation speed meter 160 to easily grasp whether the wire rope 130 is defective or not.

Hereinafter, a method of detecting a wire rope defect position according to a first embodiment of the present invention will be described. 4 is a flow chart for explaining a method for detecting a defective position of a wire rope according to a first embodiment of the present invention.

Referring to FIGS. 1 to 4, the wire rope defect position detection method according to the first embodiment detects whether the wire rope 130 is defective, and detects the number of revolutions of the drum 120 (S101) ), A calculating step (S102) of calculating the defective position of the wire rope 130 according to the number of revolutions of the drum 120, and a displaying step of displaying the defective position of the wire rope 130 on the control display (S103). do.

In the sensing step (S101), when the wire rope 130 is raised or lowered by the rotation of the drum 120, the defect detector 150 detects whether the wire rope 130 is defective, and the rotation speed meter 160 The drum 120 measures the number of revolutions. The sensing step (S101) is a signal generation step for generating a signal from the magnetic flux sensor 157 and the rotational speed meter, and a signal generated from the magnetic flux sensor 157 and a signal generated from the rotational speed meter 160, the control display 170 It may include a transmission step for transmitting to and a defect determination step for analyzing the signal transmitted from the control display unit 170 to determine whether a defect has occurred.

In the calculating step (S102), when it is sensed that a defect has occurred in the wire rope 130, the defect location of the wire rope 130 according to the number of revolutions of the drum 120 is calculated. In the display step S103, the defect location of the wire rope 130 is displayed on the control display unit 170 to inform the operator.

As described above, since the method for detecting a defect location according to the first embodiment includes a detection step and a calculation step, it is possible to easily determine whether the wire rope 130 is defective or not.

Hereinafter, a crane according to a second embodiment of the present invention will be described.

5 is a view schematically showing a crane according to a second embodiment of the present invention.

Referring to FIG. 5, the crane according to the second embodiment has the same structure as the crane according to the first embodiment, except for the repair position transfer unit, and duplicate description of the same configuration will be omitted.

The crane 20 according to the second embodiment includes a drum 220, a wire rope 230, a rotating member 241, a support bracket 242, and a defect position detecting device 210. On the other hand, the defect position detection device 210 includes a defect detector 250, a rotation speed meter 260, a control display 270, a repair position transfer unit 280.

The drum 220 is formed in a circular shape, and the wire rope 230 is wound on the outer circumferential surface of the drum 220. The drum 220 may be mounted on a support beam 245 installed on the ceiling of the workshop.

The rotating member 241 includes a motor and a reduction gear connected to the motor, and rotates the drum 220. The support bracket 242 is provided with a bearing therein to support the drum 220 so that the drum 220 is easily rotated and fixedly installed on the support beam 245.

The rotation speed meter 260 is installed in connection with the drum 220 to measure the rotation speed of the drum 220. The rotation speed meter 260 measures the rotation number and rotation angle of the drum 220 and transmits it to the control display unit 270. The rotation speed meter 260 may be formed of a rotary encoder, and may be wirelessly connected to the control display unit 270.

The wire rope 230 may be made of a steel wire, and is wound around the drum 220. A rotatable pulley 231 is installed on the wire rope 230, and a hook 232 for mounting the cargo is installed on the pulley 231. Meanwhile, two defect detectors 250 are respectively installed on the wire rope 230 supporting the pulley 231.

The control display unit 270 may be formed of a wireless terminal or a computer having a processor, and has a display indicating a defective location of the wire rope. The control display unit 270 calculates the position of the wire rope 230 where the defect is detected based on the signal transmitted from the rotation speed meter 260.

The repair location transfer unit 280 is connected to the control display unit 270 by wire or wirelessly to receive information from the control display unit 270. The repair position transfer unit 280 transfers the wire rope 230 to move the defective portion to a repairable location by receiving the location information where the defect occurred from the control display unit 270.

In addition, the repair location transfer unit 280 determines the location of the defect and determines whether it is dangerous according to the location of the defect, and determines whether to operate. Stop, and if the defect location is out of a certain distance from the pulley, it can be operated, but it can inform whether the repair is prompt. Here, a certain distance can be calculated in consideration of the size of the pulley, the weight, and the load on the hook.

To this end, the repair position transfer unit 280 includes a repair position search module 281 that searches for a repair position closest to a defect position, a distance calculation module 282 that calculates a distance between a defective part and a repair position, and a control display unit 270. And a transfer communication module 283 that receives defect location information and transmits a transfer signal to the rotating member 241.

The repair location search module 281 searches for the repair location closest to the defective portion and sets the repair location. The distance calculation module 282 calculates the distance between the set repair position and the defective part. For example, when the defective portion is close to the floor, the repair location search module 281 may set the floor of the workplace as a repair location, and the distance calculation module 282 calculates a distance between the floor of the workplace and the defective portion.

On the other hand, when the defect portion is close to the beam, the repair location search module 281 may set a workable place on the beam 245 as a repair location, and the distance calculation module 282 may include a location and defect portion on the beam 245 Calculate the distance between.

As described above, the crane 20 according to the second embodiment may perform repair work more quickly by transferring the defective wire rope 230, including the repair position transfer unit 280, to the optimal repair position. have.

Hereinafter, a method of detecting a wire rope defect location according to a second embodiment of the present invention will be described. 6 is a flowchart illustrating a method for detecting a defective position of a wire rope according to a second embodiment of the present invention.

5 and 6, the wire rope defect position detection method according to the second embodiment detects whether the wire rope 230 is defective and detects the number of revolutions of the drum. (S201), a calculation step (S202) of calculating the defect position of the wire rope 230 according to the number of revolutions of the drum 220, and a display step of displaying the defect position of the wire rope 230 on the control display unit 270 ( S203), and a transfer step (S204) of moving the defective position to the repaired position.

In the sensing step (S201), when the wire rope 230 is raised or lowered due to the rotation of the drum 220, the defect detector 250 detects whether the wire rope 230 is defective, and the rotational speed meter detects the drum ( 220) is measured. In the calculating step S202, when it is sensed that a defect has occurred in the wire rope 230, the defect location of the wire rope 230 according to the number of revolutions of the drum 220 is calculated. In the display step S203, the defect location of the wire rope 230 is displayed on the control display unit 270 to inform the operator.

The transfer step (S204) is performed after the display step and transfers the wire rope 230 so that the defective portion of the wire rope 230 is transmitted to a repairable location by receiving information of the defective portion.

In addition, the transfer step (S204) determines the location of the defect and determines whether it is dangerous according to the location of the defect and determines whether to operate. When the defect location is out of a certain distance from the pulley, it can be operated, but it can be notified as soon as possible. Here, a certain distance can be calculated in consideration of the size of the pulley, the weight, and the load on the hook.

To this end, the transport step (S204) is a repair position search step of searching for a repair position closest to a defect position, a distance calculation step of calculating a distance between a defect position and a repair position, and transport for transferring a transfer signal to the rotating member 241 It may include an information transmission step.

As described above, the wire rope defect location detection method according to the second embodiment includes a transfer step (S204) to transfer the defective wire rope 230 to an optimal repair position to perform repair work more quickly. You can.

Hereinafter, a crane according to a third embodiment of the present invention will be described. 7 is a longitudinal sectional view showing a defect detector according to a third embodiment of the present invention.

Referring to FIG. 7, the crane according to the third embodiment has the same structure as the crane according to the first embodiment, except for the marking member 370, and duplicate description of the same configuration is omitted. do.

The defect position detecting apparatus according to the third embodiment includes a defect detector 350, a rotation speed meter, a control display, and a marking member 370.

The defect detector 350 is formed in a cylindrical shape, and a hole 350a into which the wire rope 330 is inserted is formed in the center. The wire rope 330 is installed to penetrate the defect detector 350. The defect detector 350 is installed inside the cylindrical casing 351 and the casing 351 and is attached to the radially arranged magnets 356 and the insertion tube 358 and the insertion tube 358 installed inside the casing, and leak leakage magnetic flux. It includes a sensing magnetic flux sensor 357, and a communication unit 359 for transmitting the signal of the magnetic flux sensor 357.

A bottom plate 353 having a hole is formed at a lower portion of the casing 351, and a top plate 352 having a hole is installed at a top portion of the casing 351. Rollers 354 for reducing friction with wire ropes are installed in the holes of the upper and lower plates.

In addition, two marking members 370 are installed inside the defect detector 350, and the marking members 370 may be formed of nozzles spraying a marking material having a color. The marking member 370 is made of liquid or gas and can spray a marking material having a color. The marking members 370 are spaced apart in the height direction with the magnetic flux sensor 357 interposed therebetween, and are respectively disposed at the bottom of the magnetic flux sensor 357.

When a defect occurs in the wire rope 330, an abnormal signal is generated by the magnetic flux sensor 357, and the signal is transmitted to the control display. The control display unit determines whether there is an abnormality in the signal transmitted from the magnetic flux sensor 357, and when it is determined that there is an abnormality, the control display unit calculates the length of the wire rope 330 according to the number of revolutions of the drum, thereby causing a defective wire. The position of the rope 330 is displayed. In addition, the control display unit transmits a signal to the marking member 370 by wireless communication, and the two marking members 370 spray the marking material to display the portion where the wire rope 330 has a defect. The marking member 370 sprays the marking material on the upper and lower portions of the defect location, so that the user can more easily find the defect location.

As described above, in the crane according to the third embodiment, the marking member 370 is installed to easily grasp whether the wire rope 330 is defective or not.

Hereinafter, a method of detecting a wire rope defect location according to a third embodiment of the present invention will be described. 8 is a flowchart illustrating a method for detecting a defective position of a wire rope according to a third embodiment of the present invention.

Referring to FIGS. 7 and 8, the wire rope defect position detection method according to the third embodiment detects whether the wire rope 330 is defective or not, and detects the number of revolutions of the drum (S301). ), A marking step (S302) for forming a mark on the wire rope 330, a calculating step (S303) for calculating a defect position of the wire rope 330 according to the number of revolutions of the drum, and a defect position of the wire rope 330 It includes a display step (S304) for displaying on the control display.

In the sensing step (S301), when the wire rope 330 rises or falls due to the rotation of the drum, the defect detector 350 detects whether the wire rope 330 is defective, and the rotational speed meter measures the rotational speed of the drum. Measure.

In the marking step S302, when a defect is detected in the wire rope 330, a marking material is sprayed from the marking member 370 to form a mark on the wire rope 330. Here, the marking step S302 may form markings on the upper and lower portions of the defective area, respectively, by using the two marking members 370 spaced apart vertically.

In the calculating step S303, when it is sensed that a defect has occurred in the wire rope 330, the defect location of the wire rope 330 according to the number of revolutions of the drum is calculated. In the display step (S304), the defect location of the wire rope 330 is displayed on the control display unit () to inform the operator.

As described above, the method for detecting a defect location according to the third exemplary embodiment includes a detection step (S301), a marking step (S302), and a calculation step (S303) to facilitate the defect location and location of the wire rope 330. I can grasp it.

Hereinafter, a crane according to a fourth embodiment of the present invention will be described. 9 is a longitudinal sectional view showing a defect detector according to a fourth embodiment of the present invention.

9, the crane according to the fourth embodiment has the same structure as the crane according to the first embodiment, except for the marking member 470, and duplicate description of the same configuration is omitted. do.

The defect position detecting device according to the fourth embodiment includes a defect detector 450, a rotation speed meter, a control display, and a marking member 470.

The defect detector 450 is formed in a cylindrical shape, and a hole 450a into which the wire rope 430 is inserted is formed in the center. The wire rope 430 is installed to penetrate the defect detector 450. The defect detector 450 is installed inside the cylindrical casing 451 and the casing 451 and is attached to the radially arranged magnets 456 and the insertion tube 458 and the insertion tube 458 installed inside the casing, and leak leakage magnetic flux. It includes a magnetic flux sensor 457 to detect, and a communication unit 459 for transmitting the signal of the magnetic flux sensor 457.

A bottom plate 453 in which a hole is formed is formed in a lower portion of the casing 451, and a top plate 452 in which a hole is formed in the upper portion of the casing 451 is defectively installed. Rollers 454 for reducing friction with the wire rope are installed in the holes of the upper and lower plates.

In addition, two marking members 470 are installed outside the defect detector 450, one marking member 470 is fixedly installed on the bottom plate 453, and the other marking member 470 is the top plate 452. It is fixedly installed on.

Here, the marking member 470 includes a case 471 in which the paint is stored and a driving part 473 rotatably coupled to one side of the case 471 to move the protruding roller 472 and the case 471. Here, the driving unit 473 may be formed of an actuator.

When it is confirmed that a defect occurs in the wire rope 430, the driving unit 473 moves the case 471 toward the wire rope 430, and the roller 472 rotates in contact with the wire rope 430 and rotates. 430).

As described above, in the crane according to the fourth embodiment, a marking member 470 having a roller 472 is installed to easily grasp whether the wire rope 430 is defective or not.

Hereinafter, a method of detecting a wire rope defect position according to a fourth embodiment of the present invention will be described. 10 is a flowchart illustrating a method for detecting a defective position of a wire rope according to a fourth embodiment of the present invention.

9 and 10, the wire rope defect position detection method according to the fourth embodiment detects whether the wire rope 430 is defective or not, and detects the number of revolutions of the drum (S401). ), A marking step (S402) for forming a mark on the wire rope 430, a calculating step (S403) for calculating a defect position of the wire rope 430 according to the number of revolutions of the drum, and a defect position of the wire rope 430 It includes a display step (S404) for displaying on the control display.

In the sensing step (S401), when the wire rope 430 is raised or lowered due to the rotation of the drum, the defect detector 450 detects whether the wire rope 430 is defective, and the rotation speed meter determines the number of revolutions of the drum. Measure.

In the marking step (S402), when it is sensed that a defect occurs in the wire rope 430, the driving unit 473 moves the case 471 so that the roller 472 contacts the wire rope 430 to the wire rope 430. Form a marker. Here, in the marking step S402, markings may be formed on the upper and lower portions of the defective portion, respectively, by using two marking members 470 spaced vertically.

In operation S403, if it is sensed that a defect has occurred in the wire rope 430, the defect location of the wire rope 430 according to the number of revolutions of the drum is calculated. In the display step S404, the defect location of the wire rope 430 is displayed on the control display unit to notify the operator.

As described above, the method for detecting a defect location according to the fourth embodiment determines whether a defect is present in the detection step (S401) and marks it using the roller 472 in the marking step (S402), and is defective in the calculation step (S403). Since the position is calculated, it is possible to easily determine whether the wire rope 330 is defective or not.

As described above, one embodiment of the present invention has been described, but those skilled in the art can add, change, delete, or add elements within the scope of the present invention as described in the claims. The present invention may be variously modified and changed by the like, and it will be said that this is also included within the scope of the present invention.

10, 20: crane 110, 210: fault location detection device
120, 220: drum 130, 230: wire rope
131, 231: pulley 132, 232: hook
141, 241: rotating member 142, 242: support bracket
145, 245: support beam 150, 250, 350, 450: defect detector
151, 351, 451: casing 156, 356, 456: magnet
157, 357, 457: flux sensor 158, 358, 458: insertion tube
159, 359, 459: communication unit 160: speed meter
170: control display unit 280: repair position transfer unit
281: repair location search module 282: distance calculation module
283: transport communication module 370, 470: marking member
471: Case 472: Roller
473: drive unit

Claims (15)

delete delete delete In the wire rope defect position detection device of a crane comprising a drum in which the wire rope is wound,
A defect detector detecting whether the wire rope is defective;
A rotation speed meter for measuring the rotation speed of the drum; And
A control display unit for calculating and displaying a defective position of the wire rope according to the number of revolutions of the drum;
It includes,
The defect detector includes a magnet surrounding the wire rope and a magnetic flux sensor that measures leakage magnetic flux in the defect area,
The defect detector includes a repair location transfer unit that receives the location information of the defect from the control display unit and moves the defective portion of the wire rope to a repairable location,
The repair position conveying unit is connected to the drum and the distance calculation module for calculating the distance between the defective part and the repair position, and the repair position search module for searching for the repair position on the beam or the floor, while searching for the repair position closest to the defect position. Wire rope defect position detection device comprising a transfer communication module for transmitting a transfer signal to a rotating member for rotating the drum. delete delete delete delete delete delete delete In the crane installed on the ceiling,
A drum rotatably installed;
A wire rope wound around the drum; And
A defect position detecting device including a defect detector detecting whether the wire rope is defective, a rotation speed meter measuring the number of revolutions of the drum, and a control display unit calculating a defect position of the wire rope according to the number of revolutions of the drum;
It includes,
The defect detector includes a repair location transfer unit that receives the location information of the defect from the control display unit and moves the defective portion of the wire rope to a repairable location,
The repair position conveying unit is connected to the drum and the distance calculation module for calculating the distance between the defective part and the repair position, and the repair position search module for searching for the repair position on the beam or the floor, while searching for the repair position closest to the defect position. Crane comprising a transfer communication module for transmitting a transfer signal to a rotating member for rotating the drum. delete delete In the method of detecting the location of a wire rope defect of a crane comprising a drum in which the wire rope is wound,
A sensing step of measuring the number of revolutions of the drum while detecting whether the wire rope is defective;
A calculating step of calculating a defect position of the wire rope according to the number of revolutions of the drum; And
A display step of displaying a defective position of the wire rope on a control display;
It includes,
It is carried out after the display step, and further comprising a transfer step of transferring the wire rope so that the defective portion is moved to a repairable location by receiving information on the defective portion of the wire rope,
The transfer step is a repair position search step of searching for a repair position closest to a defect position but searching for a repair position on a beam or floor, and a distance calculation step of calculating a distance between a defective part and a repair position, and the drum connected to the drum. A method of detecting a defective position of a wire rope comprising a step of transmitting a transfer information to transmit a transfer signal to a rotating member that rotates.

Images