KR102501768B1 - abnormal state detection device for stage equipment wire - Google Patents

Abstract

An apparatus for detecting an abnormal state of a wire for stage equipment is disclosed. The device for detecting an abnormal state of wire for stage equipment of the present invention is provided on the support frame so as to raise and lower the kinetic part while supporting the kinetic part with respect to the support frame, and is connected to the kinetic part to support the kinetic part. A drum is wound, but one end of the wire rope is fixed, and rotates in a forward and reverse direction by a motor to wind or unwind the wire rope; A wire rope fixing bush provided on the support frame so that the other end of the wire rope extending downward from the drum, connected to the kinetic part, and then turned and extending upward is wound and fixed; A current applying connection unit that connects one end and the other end of the wire rope to form a closed loop together with the wire rope and includes an electrically conductive material so that the current is energized along the closed loop; and an abnormal state detection unit for applying a current to the wire rope or the current applying connection unit, detecting a current value passing through the wire rope, and controlling the driving of the motor according to a detection result. According to the present invention, safety accidents can be prevented by predicting disconnection or the possibility of disconnection of the wire rope in advance by comparing the detected current value with the set value after applying the current to the wire rope side used in the stage lifting device.

Description

Abnormal state detection device for stage equipment wire}

The present invention relates to a device for detecting an abnormal state of a wire for a stage device capable of preventing a safety accident by predicting wire disconnection in advance.

In general, various devices are installed on the stage, such as lighting fixtures for lighting the stage, effect fixtures for producing effects necessary for performance contents, and curtain lifting fixtures for variably compartmentalizing the stage with the audience.

These devices are usually mounted on elevating stage facilities for reasons of management, maintenance, and performance production, and are installed so as to be able to move up and down.

The stage equipment elevating device is fixed to the ceiling and has a main body having a predetermined installation space, a lifting body connected to the main body with wires and coupled with stage equipment such as lighting at the bottom, a drum installed in the installation space and wire unwinded and wound, and a wire and a driving means axially coupled to the drum to automatically raise and lower the elevator body by unwinding and winding operations.

In such a conventional stage equipment elevating device, there is a high risk of equipment stoppage and drive motor damage due to wire deviating from the drum, as well as a high risk of device damage and accidents due to the fall of stage equipment such as lights due to wire cutting. there is a problem.

As an example to solve this problem, a brake for a stage equipment elevating device for preventing a fall of a stage equipment has been developed and applied, but the structure is complicated, so the cost increases significantly and the installation process is complicated.

Republic of Korea Patent Registration No. 10-1942867 (2019.01.28 announcement)

The present invention has been made to solve the above-mentioned conventional problems, and after connecting additional components to the wire rope to form a closed loop structure, applying a current, detecting the current value passing through the wire rope, and comparing the wire with the set value An object of the present invention is to provide an abnormal state detection device for wire for stage equipment that can predict in advance the possibility of disconnection or disconnection of a rope.

In addition, the present invention has a simple structure, so it is easy to install, does not cause a significant increase in cost, and is a wire for stage equipment that can be easily applied to the winch drum side currently used without the need to newly design the current winch drum. It is an object of the present invention to provide an abnormal state detection device.

According to one aspect of the present invention, it is provided on the support frame so as to raise and lower while supporting the kinetic part with respect to the support frame, and a wire rope made of an electrically conductive material connected to the kinetic part and supporting the kinetic part is wound around the wire rope One end of the drum is fixed and rotates in the forward and reverse directions by a motor drive to wind or unwind the wire rope; A wire rope fixing bush provided on the support frame so that the other end of the wire rope extending downward from the drum, connected to the kinetic part, and then turned and extending upward is wound and fixed; A current applying connection unit that connects one end and the other end of the wire rope to form a closed loop together with the wire rope and includes an electrically conductive material so that the current is energized along the closed loop; and an abnormal state detection unit for applying a current to the closed loop, detecting a current value passing through the wire rope, and controlling the driving of the motor according to a detection result.

The current applying connection unit may include a drum rotating body coupled to the rotating shaft of the drum to be rotatable simultaneously and made of an electrically conductive material; A first electric wire connecting one end of the wire rope and the drum rotating body; And it may include a second wire portion connecting between the drum rotating body and the other end of the wire rope.

The second electric wire unit, one end of the torsion spring provided in the support frame so as to always elastically contact the drum rotating body; And it may include a second wire connecting between the other end of the torsion spring and the other end of the wire rope.

The torsion spring may be made of an electrically conductive material.

One end of the torsion spring may maintain a state of elastically pressing the outer surface of the drum rotating body at all times when the drum and the drum rotating body are rotated by the driving of the motor.

A spring disposition groove may be provided on an outer circumferential surface of the drum rotating body so that one end of the torsion spring is disposed inside along the circumferential direction.

The spring arrangement groove may have a V-shaped cross-sectional shape.

According to another aspect of the present invention, provided on the first and second support frames to support the kinetic unit with respect to the first and second support frames, provided on the first and second support frames, respectively, and the kinetic unit First and second wire ropes made of electrically conductive material connected to the other end to support the kinetic part are wound, respectively, and ends of the first and second wire ropes are fixed, respectively, and rotated in a forward and reverse direction by a motor drive to form a first and second wire ropes. and first and second drums for winding or unwinding the second wire rope. a current applying connection portion connecting ends of the first and second wire ropes to each other to form a closed loop together with the kinetic portion, and including an electrically conductive material so as to be energized along the closed loop; and an abnormal state detection unit for applying a current to the closed loop, detecting a current value passing through the first and second wire ropes, and controlling the driving of the motor according to the detection result. is provided.

The current applying connection unit may include first and second drum rotating bodies coupled to the rotating shafts of the first and second drums to be rotatable simultaneously and made of an electrically conductive material; first and second wires respectively connecting between one end of the first wire rope and the first drum rotating body and between one end of the second wire rope and the second drum rotating body; And it may include a third electric wire connecting between the first drum rotating body and the second drum rotating body.

A pair of torsion springs provided on the first and second support frames, respectively, so that one end of the third electric wire unit always elastically contacts the first drum rotating body and the second drum rotating body; and a third wire connecting the other ends of the pair of torsion springs.

The torsion spring may be made of an electrically conductive material.

One end of the torsion spring maintains a state of elastically pressing the outer surfaces of the first and second drum rotating bodies at all times when the first and second drums and the first and second drum rotating bodies are rotated. can

Spring arrangement grooves may be provided on outer circumferential surfaces of the first and second drum rotators, respectively, so that one end of the torsion spring is disposed in the circumferential direction.

The spring arrangement groove may have a V-shaped cross-sectional shape.

The kinetic part may be made of an electrically conductive material, or the kinetic part may be made of an electrically non-conductive material and an electrically conductive wire connecting the other ends of the first and second wire ropes may be further provided.

According to the above-described device for detecting an abnormal state of wire for stage equipment of the present invention, after applying current to the wire rope side used in the stage lifting device, the detected current value is compared with the set value, so that the wire rope is disconnected or the possibility of disconnection occurs. Accidents can be prevented by predicting in advance.

In addition, as the current application connection unit has a simple structure including a drum rotation body, a first wire, and a second wire portion (torsion spring, second wire), it is currently used without the need to newly design the current winch drum side. It can be used by easily applying it to the side of the winch drum.

1 and 2 are perspective views showing a state in which an abnormal state detection device for a wire for stage equipment according to a first embodiment of the present invention is installed;
3 is a perspective view showing an apparatus for detecting an abnormal state of a wire for stage equipment according to a first embodiment of the present invention;
Figure 4 is a front view of Figure 3;
5 and 6 are views showing the contact relationship between the torsion spring and the drum rotating body in the abnormal state detection device for the wire for stage equipment according to the first embodiment of the present invention;
7 is a perspective view showing a state in which an abnormal state detection device for a wire for stage equipment according to a second embodiment of the present invention is installed;
8 is a view showing how the kinetic part moves through the abnormal state detection device of the wire for stage equipment according to the second embodiment of the present invention;
9 is a view showing the structure of the first drum side of the abnormal state detection device of the wire for stage equipment according to the second embodiment of the present invention;
10 is a view showing the structure of the second drum side of the device for detecting an abnormal state of a wire for stage equipment according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments will complete the disclosure of the present invention, and will fully cover the scope of the invention to those skilled in the art. It is provided to inform you. Like reference numerals designate like elements in the drawings.

An apparatus for detecting an abnormal state of a wire for stage equipment according to a preferred embodiment of the present invention detects the disconnection state of a plurality of wires constituting the wire at the beginning when the wire used in the stage lifting apparatus is damaged, predicts disconnection of all wires, Safety accidents can be prevented.

Hereinafter, the present invention will be described in detail with reference to various embodiments.

As shown in FIGS. 1 and 2, the apparatus 100 for detecting an abnormal state of a wire for stage equipment according to the first embodiment of the present invention moves up and down while supporting the kinetic part 10 with respect to the support frame 110. It is provided on the support frame 110 so as to

The support frame 110 may be fixed to the kinetic installation frame 11 installed near the ceiling so as to be supported on the ceiling of the building.

The kinetic unit 10 is substantially disposed below the support frame 110 to substantially generate various kinetic motions, and may be formed in various forms such as a frame shape and an object shape. The kinetic unit 10 is connected through a drum 120 and a wire rope 12, which will be described later, and can generate a kinetic motion while moving up and down with respect to the support frame 110 by driving a motor 130. The kinetic unit 10 may be provided with LEDs for providing light of various colors to the surrounding area.

On the other hand, the related drawings show a state in which the kinetic part 10 and the wire rope 12 are connected through a pulley structure, but it is not limited thereto, and the kinetic part may have a simple hook for connecting the wire rope. . However, it is preferable to apply the former pulley structure in order to reduce the frictional force between the wire rope 12 and the kinetic part 10 according to the elevation of the kinetic part 10 .

As shown in FIGS. 2 and 3, the apparatus 100 for detecting an abnormal state of a wire for stage equipment according to an embodiment of the present invention includes a drum 120, a motor 130, a wire rope fixing bush 140, an electric current It includes an application connection unit 150 and an abnormal state detection unit 170.

The drum 120 is connected to the kinetic unit 10 and is wound with a wire rope 12 supporting the kinetic unit 10, and is rotatably provided on the support frame 110.

In the embodiment of the present invention, as shown in FIG. 3, one end of the wire rope 12 is fixed to the drum 120, and the wire rope 12 is made of an electrically conductive material. In other words, the wire rope 12 may be applied as a steel wire formed by twisting a plurality of wires of electrically conductive material.

The drum 120 is formed in a cylindrical shape, and a spiral wire winding groove is provided on the outer circumferential surface so that the wire rope 12 can be continuously wound. One end of the wire rope 12 is fixed to one outer surface of the drum 120 through a separate fixing member, and is wound around a wire winding groove to extend below the drum 120 for connection with the kinetic unit 10. In an embodiment of the present invention, the drum 120 is made of an electrically non-conductive material that does not conduct electricity when current is applied.

The motor 130 moves the kinetic unit 10 up and down while winding or unwinding the wire rope 12 by rotating the drum 120 in the forward and reverse directions. Here, the motor is preferably applied as a servo motor capable of facilitating normal and reverse rotation control of the drum.

Next, as shown in FIGS. 2 and 3, the wire rope fixing bush 140 is fixed to the support frame 110 so that the other end of the wire rope 12 is wound and fixed, and is made of an electrically non-conductive material together with the drum. It is done.

In other words, the wire rope 12 extends downward from the drum 120 and is connected to the kinetic part 10 through a pulley, etc., and then the direction is changed so that the other end extends upward, and the wire rope fixing bush 140 has such a The other end of the wire rope 12 is fixed.

Next, as shown in FIGS. 2 to 4, the current applying connection unit 150 connects one end and the other end of the wire rope 12 to form a closed loop together with the wire rope 12, which will be described later. Likewise, when a current is applied to the wire rope 12 or the current applying connection unit 150, an electrically conductive material is included so that the entirety is energized along the closed loop.

Specifically, as shown in FIG. 3 , the current applying connection unit 150 includes a drum rotating body 151 , a first wire 153 and a second wire unit 155 .

The drum rotating body 151 is rotatably coupled to the rotating shaft of the drum 120 at the same time as the drum 120 and is made of an electrically conductive material. Here, the drum rotating body 151 is fixed to one side of the drum 120 or is integrally coupled to the rotating shaft of the drum 120 and rotates at the same time as the drum rotates.

As shown in FIG. 3, the first wire 153 is made of an electrically conductive material, connects one end of the wire rope 12 and the drum rotating body 151, and as described above, when current is applied from the outside, the wire Electricity is energized between the rope 12 and the drum rotating body 151. The first electric wire 153 may be made of any coupling method as long as it can conduct electricity between one end of the wire rope 12 and the drum rotating body 151.

The second wire part 155 connects the drum rotating body 151 and the other end of the wire rope located in the wire rope fixing bush 140, and similarly, when current is applied from the outside, the drum rotating body 151 and the wire rope (12) Conduct electricity between the other ends. Accordingly, one end and the other end of the wire rope 12 can be energized by the first wire 153 and the second wire part 155.

On the other hand, in order to electrically connect the drum rotating body 151 and the second wire portion 155, regardless of the normal and reverse rotation of the drum 120, the drum rotating body 151 and the second wire portion 155 are always electrically connected. It should have a connected state.

To this end, as shown in FIGS. 3 to 6 , the second wire unit 155 includes a torsion spring 156 and a second wire 157 .

The torsion spring 156 is fixed to the support frame 110 with the torsion spring base 158 interposed therebetween, and coupled to the torsion spring base 158 fixed to the support frame 110 . Here, the torsion spring base 158 is made of an electrically non-conductive material, and the torsion spring 156 is made of an electrically conductive material.

Here, it is preferable that one end of the torsion spring 156 always elastically contacts the drum rotator 151 regardless of forward and reverse rotation of the drum 120 .

In the embodiment of the present invention, as shown in FIG. 6, the torsion spring base 158 contacts the other end of the torsion spring 156 so that one end of the torsion spring 156 is in contact with the drum rotating body 151. A spring support 159 is provided so that the elastic restoring force always acts in the direction.

Therefore, it is possible to stably energize between the drum rotation body 151 and the other end of the wire rope 12 regardless of the normal and reverse rotation of the drum 120.

The second electric wire 157 is made of an electrically conductive material, connects the other end of the torsion spring 156 and the other end of the wire rope 12, and as described above, when current is applied from the outside, the torsion spring 156 and the wire rope (12) Conduct electricity between the other ends. The second wire 157 may be made of any coupling method as long as it can conduct electricity between the torsion spring 156 and the other end of the wire rope 12.

Therefore, when a current is applied to the wire rope 12 or the current applying connection unit 150 through the abnormal state detection unit 170 described later, the applied current is applied to the wire rope 12 forming a closed loop structure, the first wire ( 153), the drum rotating body 151, the torsion spring 156, and the second electric wire 157 have a state of being energized.

On the other hand, the present invention predicts in advance the abnormal state of the wire rope 12 during the continuous kinetic motion of the kinetic part 10, specifically the possibility of disconnection, and the drum 120 and the drum rotating body 151 During continuous forward and reverse rotation, contact is always made between the drum rotating body 151 and the torsion spring 156 to maintain a mutually energized state.

To this end, in the embodiment of the present invention, one end of the torsion spring 156 is always the outer surface of the drum rotating body 151 when the drum 120 and the drum rotating body 151 rotate by driving the motor 130. is elastically pressed to maintain the contact state.

Specifically, as shown in FIG. 6, the torsion spring 156 is mounted on the torsion spring base 158, and the other end of the torsion spring 156 is contacted and supported on the torsion spring base 158 as described above to generate torsion. A spring support 159 is provided at one end of the spring 156 so that an elastic restoring force always acts in a direction in contact with the drum rotating body 151 . Accordingly, while the drum 120 and the drum rotating body 151 continuously rotate forward and backward, the drum rotating body 151 and the torsion spring 156 can always stably maintain an energized state.

The present invention proposes an additional structure for maintaining a stable contact state between the torsion spring 156 and the drum rotating body 151.

Specifically, as shown in FIGS. 3 and 4, a spring arrangement groove 152 is provided on the outer circumferential surface of the drum rotating body 151 so that one end of the torsion spring 156 is disposed inside along the circumferential direction. Here, the depth of the spring disposition groove 152 is preferably greater than a predetermined thickness than the spring wire thickness of the torsion spring 156, and accordingly, one end of the torsion spring 156 is separated from the spring disposition groove 152 to rotate the drum. It is possible to prevent the contact state with (151) from being released.

In addition, in the embodiment of the present invention, the spring arrangement groove 152 is made to have a V-shaped cross-sectional shape, and one end of the torsion spring 156 is provided to contact the pointed bottom portion of the V-shaped spring arrangement groove, so that the torsion spring ( 156) is detached from the spring disposition groove 152 and the contact state with the drum rotation body 151 is released can be more stably prevented.

Next, as shown in FIGS. 2 to 4, the abnormal state detection unit 170 applies a current of a certain intensity or more in a closed loop (closed loop including a wire rope and a current applying connection) and connects the wire rope 12. The rough current value is sensed, and the driving of the motor 130 is controlled according to the detection result.

The abnormal state detection unit 170 includes a current application unit (not shown) for applying current, a current detection unit (not shown) for detecting the intensity of current flowing in a closed loop structure composed of a wire rope and a current application connection unit, and a current detection unit ( It includes a control unit (not shown) that receives the detected value of the motor 130 and controls driving of the motor 130 .

Here, the wire rope 12 and the current applying connection unit 150 form a closed loop structure, and the abnormal state detection unit 170 applies a microcurrent in a closed loop structure to detect the cut state of the wire rope 12 in advance. Prediction can be detected.

In addition, when the wire rope 12 is in a normal state, a current of a set value flows along the closed loop structure, so the abnormal state detection unit 170 detects this current value to detect that the wire rope 12 is in a normal state. can On the other hand, since the wire rope 12 is not continuously energized along the closed loop structure in the state in which it is cut, the abnormal state detection unit 170 cannot detect the current value, so that the wire rope 12 is cut or the possibility of cutting is It is possible to stop driving the motor by detecting that there is a

As described above, the present invention transmits a control signal so that the abnormal state detection unit 170 immediately stops driving the motor 130 when the wire rope 12 is completely cut and the current value is not detected. In addition to the case, the abnormal state detection unit 170 may also detect whether or not the wire rope 12 is in a partially cut state than the initial state.

Specifically, the wire rope 12 is made of a structure in which a plurality of wires are twisted with each other, and generally, the wires are gradually disconnected one by one, and then the load acting on the wire rope 12 is the allowable load (load capable of supporting the kinetic part). ) is exceeded, a disconnection occurs as a whole.

On the other hand, when the wires of the wire rope 12 are gradually disconnected one by one, the current value detected by the abnormal state detection unit 170 changes due to the change in the resistance value of the closed loop structure.

When the wire is disconnected, the abnormal state detection unit 170 detects a current value that is lower than a certain level than in the normal state due to the increase in resistance value. ) It can be determined that the disconnection of the wire of the wire rope 12 is in progress (a state in which the disconnection of the wire rope is in progress).

In an embodiment of the present invention, the abnormal state detection unit 170 classifies the set range of the current value into a plurality of groups and stores them in a separate memory (not shown), and determines whether the actual detected current value is within the range of the corresponding group. After determining whether or not, the states of "high risk of wire rope disconnection", "medium risk of wire rope disconnection", and "low risk of wire rope disconnection" may be determined.

The wire rope disconnection risk determined in this way can be transmitted to a separate management monitor (not shown) monitored by the manager or transmitted to a mobile device, and the manager can check the possibility of wire rope disconnection in real time, thereby preventing disconnection of the wire rope. It is possible to prevent the occurrence of safety accidents in advance by predicting in advance and predicting the replacement time of the wire rope.

Hereinafter, a device for detecting an abnormal state of a wire for a stage setting according to a second embodiment of the present invention will be described. use.

Although the apparatus for detecting an abnormal state of wire for stage equipment according to the first embodiment of the present invention has one drum and a motor to move one kinetic part, the abnormal state of wire for stage equipment according to the second embodiment of the present invention is provided. There is a basic difference between the state sensing device in that two drums and a motor are provided to move one kinetic part.

As shown in FIGS. 7 and 8, the apparatus 200 for detecting an abnormal state of a wire for stage equipment according to the second embodiment of the present invention has a kinetic unit 20 for the first and second support frames 210 and 211 It is provided on the first and second support frames 210 and 211 to support.

The first and second support frames 210 and 211 may be fixed to a kinetic installation frame installed near the ceiling so as to be supported on the ceiling of a building (refer to the first embodiment).

The kinetic unit 20 is substantially disposed below the first and second support frames 210 and 211 to substantially generate various kinetic motions, and may be formed in various forms such as a frame shape and an object shape. The kinetic unit 20 is connected through first and second drums 220 and 221 and first and second wire ropes 22 and 23 to be described later, and first and second support frames ( 210 and 211), kinetic motion can be generated while moving up and down, left and right reciprocating (pendulum motion). The kinetic unit 20 may be provided with LEDs for providing light of various colors to the surrounding area.

In the embodiment of the present invention, 1) the kinetic part 20 is made of an electrically conductive material, or 2) the kinetic part 20 is made of a non-conductive material and the first and second wire ropes 22 and 23 are An electrically conductive wire (not shown) connecting the other ends to each other may be further provided. The related contents are described later.

As shown in FIGS. 7 to 10, the apparatus 200 for detecting an abnormal state of a wire for stage equipment according to a second embodiment of the present invention is applied to first and second drums 220 and 221, a motor 230, and current It includes a connection unit 250 and an abnormal state detection unit 270.

The first drum 220 and the second drum 221 are connected to the kinetic part 20 and the first and second wire ropes 22 and 23 supporting the kinetic part 20 are wound, respectively. It is rotatably provided to the first and second support frames 210 and 211, respectively.

In the embodiment of the present invention, as shown in FIGS. 7, 9 and 10, one end of the first wire rope 22 is fixed to the first drum 220 and one end of the second wire rope 23 is It is fixed to the second drum 221, the other end of the first wire rope 22 is connected to the kinetic part 20, and the other end of the second wire rope 23 is similarly connected to the kinetic part 20.

In the embodiment of the present invention, the kinetic part 20 is made of an electrically conductive material, and in this case, the kinetic part 20, the first wire rope 22, the second wire rope 23 and the current applying connection part 250 One closed loop can be formed. A process of predicting whether or not a wire is disconnected in advance through this closed loop structure is the same as that of the first embodiment.

In addition, the kinetic part 20 is made of an electrically non-conductive material, and in this case, electrically conductive wires (not shown) connecting the other ends of the first and second wire ropes 22 and 23 to each other may be further provided. Therefore, when the kinetic part is made of an electrically non-conductive material in this way, the electrically conductive wire (not shown), the first wire rope 22, the second wire rope 23, and the current applying connection part 250 form one closed loop. can form Hereinafter, for convenience of description and illustration, the former case will be illustrated and described.

In an embodiment of the present invention, the first and second wire ropes 22 and 23 are made of an electrically conductive material. In other words, the first and second wire ropes 22 and 23 may be applied as steel wires formed by twisting a plurality of wires of electrically conductive material.

Separate motors 230 are installed on the first and second support frames 210 and 211, so that the first and second drums 220 and 221 can individually rotate forward and backward, and the first and second drums 220 and 221 It is made of an electrically non-conductive material that does not conduct electricity when current is applied.

The motor 230 rotates the first and second drums 220 and 221 in forward and reverse directions to wind or unwind the first and second wire ropes 22 and 23 while moving the kinetic part 20 up and down, left and right sideways. reciprocating (pendulum motion).

Next, as shown in FIGS. 7, 9 and 10, the current applying connection unit 250 connects the respective ends of the first and second wire ropes 22 and 23 to each other to form a kinetic unit (made of an electrically conductive material). As described later, when a current is applied to the current applying connection unit 250, an electrically conductive material is included so that the entire closed loop is in an energized state.

Specifically, the current applying connection unit 250 includes first and second drum rotating bodies 251 and 252, first and second wires 253 and 254, and third wire parts 255.

The first and second drum rotating bodies 251 and 252 are coupled to the rotating shafts of the first and second drums 220 and 221 to be rotatable at the same time, and are made of an electrically conductive material. Here, the first and second drum rotating bodies 251 and 252 are fixed to one side of the first and second drums 220 and 221 or integrally coupled to the rotating shaft of the first and second drums 220 and 221 to rotate simultaneously when the drum rotates. this is done

As shown in FIGS. 9 and 10, the first and second wires 253 and 254 are made of an electrically conductive material, and the first wire 253 includes one end of the first wire rope 22 and the first drum rotating body. 251, and the second electric wire 254 connects between one end of the second wire rope 23 and the second drum rotating body 252. Therefore, as described above, when current is applied from the outside, the first wire rope 22 and the first drum rotating body 251, the second wire rope 23 and the second drum rotating body 252 can be energized with each other. there is.

As shown in FIGS. 7, 9 and 10, the third wire portion 255 connects the first drum rotating body 251 and the second drum rotating body 252, and similarly applies current from the outside. When the current is applied between the first drum rotating body 251 and the second drum rotating body 252. Accordingly, one end of the first wire rope 22 and one end of the second wire rope 23 are the first and second wires 253 and 254, the first and second drum rotating bodies 251 and 252 and the third wire portion ( 255) can be energized.

Meanwhile, in order to electrically connect the first and second drum rotating bodies 251 and 252 and the third wire portion 255, the first and second drum rotating bodies 251 and 252 and the third wire portion regardless of forward and reverse rotation of the drum. (255) should always be electrically connected.

To this end, as shown in FIGS. 9 and 10 , the third wire unit 255 includes a pair of torsion springs 256 and a third wire 257 .

In the embodiment of the present invention, the pair of torsion springs 256 are first and second supports so as to always elastically contact the first drum rotating body 251 and the second drum rotating body 252, respectively. It is provided on the frames 210 and 211, respectively.

The torsion spring 256 is fixed to the first and second support frames 210 and 211 with the torsion spring base 258 interposed therebetween, and the torsion spring base 258 fixed to the first and second support frames 210 and 211 is bound to Here, the torsion spring base 258 is made of an electrically non-conductive material, and the torsion spring 256 is made of an electrically conductive material.

Here, the torsion spring 256 is provided so that one end of the first and second drums 220 and 221 always elastically contacts the first and second drum rotating bodies 251 and 252 regardless of forward and reverse rotation. desirable.

In the embodiment of the present invention, as shown in FIGS. 9 and 10, the other end of the torsion spring 256 is supported in contact with the torsion spring base 258 so that one end of the torsion spring 256 has first and second drums. A spring support 259 is provided so that elastic restoring force always acts in a direction in contact with the rotating bodies 251 and 252 (same structure as the first embodiment).

Therefore, it is possible to stably conduct electricity between the first and second drum rotating bodies 251 and 252 and the ends of the first and second wire ropes 22 and 23 regardless of forward and reverse rotation of the first and second drums 220 and 221. there is.

The third electric wire 257 is made of an electrically conductive material, connects the other ends of the pair of torsion springs 256, and as described above, when current is applied from the outside, the first and second wire ropes 22 and 23 energize between them once.

Therefore, when current is applied to the current application connection unit 250 through the abnormal state detection unit 270 described later, the applied current is transmitted through the first wire rope 22, the kinetic unit 20, and the first wire rope 22 forming a closed loop structure. Wire 253, first drum rotation body 251, torsion spring 256 provided on the first drum side, third wire 257, torsion spring 256 provided on the second drum side, second drum rotation body 252, the second electric wire 254 and the second wire rope 23 have a state of being energized along.

On the other hand, the present invention predicts in advance the abnormal state of the first and second wire ropes 22 and 23 during the continuous kinetic motion of the kinetic part 20, specifically the possibility of disconnection, 2 While the drums 220 and 221 and the first and second drum rotating bodies 251 and 252 are continuously forward and reversely rotated, contact is always made between the first and second drum rotating bodies 251 and 252 and the torsion spring 256 to conduct electricity between them. state must be maintained.

To this end, in an embodiment of the present invention, one end of the torsion spring always elastically presses the outer surface of the drum rotating body when the first and second drums and the first and second drum rotating bodies are rotated by a motor drive. to maintain contact. Since the contact structure between the torsion spring and the drum rotating body for this purpose, the structure of the drum rotating body, etc. are the same as those of the first embodiment, a redundant description thereof will be omitted.

Next, as shown in FIGS. 7 and 9, the abnormal state detection unit 270 applies a current of a certain intensity or more in a closed loop (a closed loop including the first and second wire ropes and the current applying connection) and controls the The current value passed through the first and second wire ropes 22 and 23 is sensed, and motor driving is controlled according to the sensing result.

Here, the first and second wire ropes 22 and 23 and the current applying connection unit 250 form a closed loop structure, and the abnormal state detection unit 270 applies a microcurrent in a closed loop structure to the first and second wire ropes 22 and 23. The cutting state of the second wire ropes 22 and 23 can be detected in advance.

Since the contents related to predicting disconnection of the wire rope in advance through the application of current are the same as those of the first embodiment, redundant description will be omitted. However, in the second embodiment of the present invention, the abnormal state detection unit 270 does not predict disconnection or the possibility of disconnection by individually specifying the first wire rope 22 and the second wire rope 23, but It can be predicted that there is a possibility of disconnection or disconnection in the first wire rope 22 or the second wire rope 23.

In the above, the present invention has been shown and described in relation to preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the configuration and operation as shown and described. Rather, it will be appreciated by those skilled in the art that many changes and modifications may be made to the present invention without departing from the spirit and scope of the appended claims.

10: kinetic part 12: wire rope
100: abnormal state detection device 110: support frame
120: drum 130: motor
140: wire rope fixing bush 150: current applying connection
151: drum rotating body 152: spring arrangement groove
153: first wire 155: second wire
156: torsion spring 157: second wire
158: torsion spring base 159: spring support
170: abnormal state detection unit 20: kinetic unit
22: first wire rope 23: second wire rope
200: abnormal state detection device 210: first support frame
211: second support frame 220: first drum
221: second drum 230: motor
250: current applying connection part 251: first drum rotating body
252: second drum rotating body 253: first wire
254: second wire 255: third wire
256: torsion spring 257: third wire
258: torsion spring base 259: spring support
270: abnormal state detection unit

Claims (15)

It is provided on the support frame to raise and lower while supporting the kinetic unit with respect to the support frame,
A drum for winding or unwinding the wire rope connected to the kinetic unit and supporting the kinetic unit by winding a wire rope made of an electrically conductive material, one end of the wire rope being fixed, and rotating in a forward and reverse direction by a motor drive;
A wire rope fixing bush provided on the support frame so that the other end of the wire rope extending downward from the drum, connected to the kinetic part, and then turned and extending upward is wound and fixed;
A current applying connection unit that connects one end and the other end of the wire rope to form a closed loop together with the wire rope and includes an electrically conductive material so that the current is energized along the closed loop; and
An abnormal state detection device of a wire for stage equipment including an abnormal state detection unit for applying current to the closed loop, detecting a current value passing through the wire rope, and controlling the driving of the motor according to the detection result. According to claim 1,
The current applying connection part,
a drum rotating body coupled to the rotating shaft of the drum to be rotatable simultaneously and made of an electrically conductive material;
A first electric wire connecting one end of the wire rope and the drum rotating body; and
An abnormal state detection device of a wire for stage equipment, characterized in that it comprises a second wire portion connecting between the drum rotating body and the other end of the wire rope. According to claim 2,
The second wire part,
a torsion spring provided on the support frame so that one end always elastically contacts the drum rotating body; and
An abnormal state detection device of a wire for stage equipment, characterized in that it comprises a second wire connecting between the other end of the torsion spring and the other end of the wire rope. According to claim 3,
The torsion spring is an abnormal state detection device of a wire for stage equipment, characterized in that made of an electrically conductive material. According to claim 3,
One end of the torsion spring, when the drum and the drum rotating body are rotated by the motor drive, the ideal of the wire for stage equipment, characterized in that always maintaining a state of elastically pressing the outer surface of the drum rotating body condition sensor. According to claim 3,
An abnormal state detection device of a wire for stage equipment, characterized in that a spring arrangement groove is provided on the outer circumferential surface of the drum rotating body so that one end of the torsion spring is disposed inside along the circumferential direction. According to claim 6,
The spring arrangement groove is an abnormal state detection device of a wire for stage equipment, characterized in that it has a V-shaped cross-sectional shape. It is provided on the first and second support frames to support the kinetic unit with respect to the first and second support frames,
First and second wire ropes made of an electrically conductive material are respectively provided on the first and second support frames, and the kinetic part and the other end are connected to support the kinetic part. first and second drums which are respectively fixed and rotate in forward and reverse directions by a motor drive to wind or unwind the first and second wire ropes;
a current applying connection portion connecting ends of the first and second wire ropes to each other to form a closed loop together with the kinetic portion, and including an electrically conductive material so as to be energized along the closed loop; and
An abnormal state detection device for wire for stage equipment including an abnormal state detection unit for applying current to the closed loop, detecting a current value passing through the first and second wire ropes, and controlling the driving of the motor according to the detection result. According to claim 8,
The current applying connection part,
first and second drum rotating bodies coupled to the rotating shafts of the first and second drums to be rotatable simultaneously and made of an electrically conductive material;
first and second wires respectively connecting between one end of the first wire rope and the first drum rotating body and between one end of the second wire rope and the second drum rotating body; and
An abnormal state detection device for wires for stage equipment, characterized in that it comprises a third wire portion connecting between the first drum rotating body and the second drum rotating body. According to claim 9,
The third wire part,
a pair of torsion springs provided on the first and second support frames, respectively, so that one end always elastically contacts the first drum rotating body and the second drum rotating body; and
An abnormal state detection device of a wire for stage equipment, characterized in that it comprises a third wire connecting between the other ends of the pair of torsion springs. According to claim 10,
The torsion spring is an abnormal state detection device of a wire for stage equipment, characterized in that made of an electrically conductive material. According to claim 10,
One end of the torsion spring maintains a state of elastically pressing the outer surfaces of the first and second drum rotating bodies at all times when the first and second drums and the first and second drum rotating bodies are rotated. An abnormal state detection device of a wire for a stage device, characterized in that for. According to claim 10,
The abnormal state detection device of the wire for stage equipment, characterized in that the spring disposition groove is provided on the outer circumferential surface of the first and second drum rotating bodies so that one end of the torsion spring is disposed inside along the circumferential direction. According to claim 13,
The spring arrangement groove is an abnormal state detection device of a wire for stage equipment, characterized in that it has a V-shaped cross-sectional shape. According to claim 8,
The kinetic part is made of an electrically conductive material,
The kinetic part is made of an electrically non-conductive material and an abnormal state detection device of a wire for stage equipment, characterized in that further provided with an electrically conductive wire connecting the other ends of the first and second wire ropes to each other.

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