KR101281142B1 - Flag raising apparatus and control method thereof - Google Patents

Abstract

The present invention relates to a device for hoisting a device and a control method thereof, the flagpole is provided with a rotating shaft that is stored in the inside of the storage box or drawn out to the outside of the storage box and hoisting and recovering the device therein, the center of the lower end of the flagpole is formed To a first driver for rotating the shaft, a second driver for hoisting or retrieving the machine by rotating the rotary shaft, a detector for detecting whether the receiving and drawing operations of the flagpole are completed when the first driver is driven, and a detection signal of the detector. A control unit for controlling driving of the first and second driving units based on the first detection unit, wherein the detection unit is installed on an inner surface of the storage box and detects a flagpole stored in the storage box and a bottom surface of the storage box; It is provided on the side and provides a configuration including a second sensor for sensing the flagpole drawn out of the storage box .
By using the above-mentioned device hoisting device and its control method, the present invention drives the first drive unit to store the flagpole inside the storage box or draws it out of the storage box, and drives the second drive unit to hoist the recovered flag on the flagpole. The flag can be recovered into the flagpole.

Description

Hoisting device and its control method {FLAG RAISING APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to a machine hoisting apparatus and a control method thereof, and more particularly, to a machine hoisting apparatus and a control method thereof for automatically hoisting and storing various machines installed horizontally on the side of a street light.

In general, the street lamps are hoisted horizontally with various kinds of flags used in various events such as national flags, national emblems, and local sports organizations, sports competitions and festivals.

In order to hoist a street lamp, the method of installing a rack mount on the street lamp requires a lot of time and manpower for hoisting and recovering the plane.

An example of an automatic hoisting device for solving this problem is Korean Patent Registration No. 10-0996182 (announced on November 23, 2011, hereinafter referred to as 'Patent Document 1'), and Patent Publication No. 10-2011-0105462 (September 27, 2011, hereinafter referred to as "Patent Document 2") and the like.

1 is an exploded perspective view of the automatic machine hoisting apparatus according to Patent Document 1, Figure 2 is a partial side view of the automatic machine hoisting apparatus according to Patent Document 2.

As shown in FIG. 1, the automatic automatic hoisting apparatus according to Patent Literature 1 is fixed and mounted by a separate bracket 1 at a predetermined height of an upper portion of a street lamp, The motor 3 which is forward-back-driven according to the application direction of an electric current is installed inside.

Inside the enclosure 2, a separate winding tube (4) is provided to be coupled to each other, the winding group 4 has a length determined according to the size of the group (5) to be hoisted, the inner end and the outside Rotating shafts 4a and 4b are coupled to the outside from the end, respectively, and the machine 5 is wound along the longitudinal direction of the outer circumferential surface.

The automatic automatic hoisting apparatus according to the patent document 1 hoistes or recovers the machine by rotating the mechanical winding tube according to the driving of the motor.

However, Patent Literature 1 has a problem in that even when the machine is collected, the machine winding tube is always installed horizontally on the street lamp, thereby impairing the aesthetics of the street when collecting the machine, and disturbing the running of the vehicle or the pedestrian walking.

In order to solve this problem, the automatic hoisting device according to Patent Document 2, as shown in Figure 2, by rotating the flagpole 6 about the lower end of the flagpole 6 connected to the housing portion 8 The flagpole rotating part 7 which accommodates in the enclosure part 8 is provided.

However, Patent Document 2 is not provided with a means for recognizing the rotation state during the rotational movement of the flagpole rotating portion 7, it was not possible to accurately control the rotational movement of the flagpole (6). Therefore, Patent Document 2, when the flagpole rotating portion 7 is incompletely rotated, the flagpole 6 is hoisted in an inclined state or incompletely housed inside the housing portion 8, so that the flag 9 ) Was easy and contaminated or damaged.

In addition, Patent Document 2 simply recovers the flag 9 by rotating the flagpole 6, thereby storing the folded device 9 in the enclosure 8 through a hole formed in the enclosure 8. In this case, there is a problem that the machine 9 is damaged due to friction generated while the machine 9 and the surface around the hole are in contact with each other.

Republic of Korea Patent Registration No. 10-0996182 (announced 23 November 2011) Republic of Korea Patent Publication No. 10-2011-0105462 (Published September 27, 2011)

The present invention is to solve the problems as described above, an object of the present invention is to provide a device hoisting device and a control method that can be stored inside the storage box hoisting and withdrawing the equipment installed horizontally on the street. .

Another object of the present invention is to provide a device hoisting device and a control method thereof, which can be configured with a simple structure to prevent the damage of the machine during hoisting and retrieval and storage operation of the machine.

Still another object of the present invention is to provide a device hoisting device and a control method thereof, which can accurately control the storage and withdrawal operations of the device in the storage box.

According to a feature of the present invention for achieving the object as described above, the present invention is provided with a rotating shaft which is housed in the inside of the storage box or drawn out of the storage box and provided with a rotating shaft for hoisting and recovering the inside of the flagpole, the flagpole is formed A first driver for rotating the shaft around the lower end of the flagpole, a second driver for hoisting or retrieving the rotating shaft by rotating the rotary shaft, a detector for detecting whether the receiving and drawing operations of the flagpole are completed when the first driver is driven; A control unit for controlling driving of the first and second driving units based on a sensing signal of the sensing unit, wherein the sensing unit is installed on one inner surface of the storage box and senses a flagpole stored in the storage box; It is installed on the bottom side of the storage box and includes a second sensor for sensing the flagpole drawn out of the storage box The.

The bottom surface of the storage box is provided with a first support on which the first driving part is installed, a second support on which the second driving part is installed, and a stopper for supporting the flagpole during the withdrawal operation of the flagpole to limit the rotation angle. The two sensors are characterized in that it is installed on the upper surface of the stopper.

The first driving unit is connected to the first motor for generating a rotational force to rotate the flagpole, the connecting shaft which is connected to the lower end of the flagpole to transfer the rotational movement of the motor to the flagpole and the motor shaft speed to reduce the connection shaft It includes a reducer for transmitting, wherein the second driving portion includes a second motor for generating a rotational force to rotate the rotary shaft and a worm gear installed on the shaft of the second motor, the lower end of the rotary shaft and the worm gear and An interlocking worm wheel is provided.

The control unit includes a memory for storing the first and second reference time for driving the first and second motor, respectively, the second motor if the second reference time elapses after driving the second motor Characterized in that the control to stop the drive.

The present invention provides an operation unit having a power switch for receiving a power supply command to supply power to drive the first and second driving units, a power display lamp for indicating whether power is supplied, and an abnormality display for displaying an abnormality when an abnormality occurs. The display unit may further include a display unit including a lamp, and the control unit may drive the first driving unit to generate the detection signals of the first and second detection sensors until the second reference time elapses after the start of the storage and withdrawal operation of the flagpole. If not, it is characterized in that the control to stop the driving of the first driving unit and to light the abnormal display lamp.

The operation unit may further include first and second driving switches that receive operation commands for driving the first and second driving units.

According to another feature of the present invention, (a) driving the first driving unit to draw power to the outside of the flag holder receiving power, (b) driving the second driving unit when the withdrawal operation of the first driving unit is completed; Hoisting the recovered device in the flagpole; (c) driving the second driving part in the reverse direction when a recovery operation command is input; recovering the hoisted device into the flagpole in step (b); and (d) the first driving part. And driving to receive the flagpole from which the group is recovered in step (c).

In step (a) and step (c), if the detection signal of the first or second detection signal is generated within a preset first reference time after driving the first driving unit, the driving of the first driving unit is stopped and the next ( Proceed to step b) and (d), and if the detection signal of the first or second detection sensor is not generated until the first reference time elapses, it is determined that the abnormality has occurred to drive the first drive unit. It is characterized by stopping and guiding facts.

Steps (b) and (d) respectively drive the second driver for a preset second reference time, and then stop driving the second driver after the second reference time elapses.

As described above, the present invention may drive the first drive unit to accommodate the flagpole inside the storage box or draw it out of the storage box, and drive the second drive unit to hoist the collected flag on the flagpole or recover the flag into the flagpole.

In addition, the present invention is the time, manpower and cost required to lift the flag as the drive of the first and the second driving unit in sequence by only operating the power switch to perform the take-out of the flag, the lifting of the flag and the recovery of the flag and the storage of the flagpole Can greatly reduce.

In addition, according to the present invention, the flagpole is incompletely received into the inside of the storage box or the flagpole is incompletely drawn out as the operation state is accurately determined during the storage and withdrawal operation of the flagpole using the first and second detection sensors installed inside the storage box. Can be solved.

Accordingly, it is possible to prevent damage to the flagpole and flag, to raise the machine at the correct angle to improve the aesthetics of the city, and to improve the psychological effects of the lift.

In particular, the present invention may determine whether an abnormality occurs during the storage and withdrawal operation of the first driving unit by using the first and second detection sensors, and when the abnormality occurs, the lamp of the display unit may be turned on to inform the administrator of the abnormality.

As a result, the present invention has the effect of improving the efficiency of the management work by reducing the economic and time costs required for the hoisting and recovery of the group.

1 is an exploded perspective view of the automatic hoisting device according to the prior art.
2 is a partial side view of an automatic hoisting device according to another prior art.
Figure 3 is a perspective view of the machine hoisting apparatus according to a preferred embodiment of the present invention.
Figure 4 is a perspective view showing the durable structure of the lifting device shown in FIG.
5 is a partial side view of the machine hoisting apparatus shown in FIG.
6 is an exemplary view of the control panel shown in FIG.
7 is a flowchart illustrating a step-by-step control method of the machine hoisting apparatus according to a preferred embodiment of the present invention.

Hereinafter, a device for hoisting and a control method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view of a machine hoisting apparatus according to a preferred embodiment of the present invention, FIG. 4 is a perspective view showing the durability structure of the machine hoisting apparatus shown in FIG. 3, and FIG. 5 is a part of the machine hoisting apparatus shown in FIG. 3. 6 is a side view, and FIG. 6 is an exemplary view of the control panel shown in FIG. 3.

3 and 4, the hoisting device according to a preferred embodiment of the present invention is formed in a rectangular parallelepiped shape and installed in the storage box 20 and the storage box 20 installed in the street lamp 11, and when hoisting. The flagpole 30 to be drawn out is rotated around the lower end of the flagpole 30 to be accommodated in the storage box 20 or installed in the first driving unit 40 to be drawn out of the storage box 20 or the flagpole 30. Sensing unit for detecting whether the second operation unit 50 for hoisting or recovering the machine 12 by rotating the rotating shaft 32, the storage operation of the flagpole 30 and the withdrawal operation is completed when the first driving unit 40 is driven ( 60 (see FIG. 5) and a controller 70 for controlling the driving of the first and second drivers 40 and 50 based on the detection signal of the detector 60.

As shown in FIGS. 3 and 4, the storage box 20 is made of a rectangular parallelepiped shape using a metal material having high corrosion resistance to prevent corrosion and contamination by rain, snow, dust, etc., such as aluminum and its alloy. One side of the 20 is formed with a receiving hole 21 for receiving and withdrawing the flagpole 30.

The storage box 20 is installed at a predetermined height on the same column as the streetlight 11, the support bracket 22 for supporting the storage box 20 is installed below the storage box 20.

As shown in FIG. 5, the first detection sensor 61 of the sensing unit 60 that detects whether the storage operation of the flagpole 30 is completed is installed on one side of the inner surface of the storage box 20, and As shown in FIG. 4, the angle of rotation of the first and second supporters 23 and 24 and the flagpole 30 for installing the first and second driving units 40 and 50 is limited to the bottom surface. The stopper 25 is installed

The first support 23 has first and second support plates 231 and 232 arranged side by side upward on the bottom surface of the storage box 20 so as to install the first driving part 40.

The first support plate 231 is provided with a first motor 41 of the first drive unit 40, the second support plate is connected to the shaft 43 of the first drive unit 40 to accommodate and withdraw the flagpole 30 Rotatably coupled.

The second support 24 is installed at a position spaced apart from the first support 23 by a predetermined interval, the second support 24 is a second generating power to rotate the rotary shaft provided in the flagpole 30 2 drive unit 50 is installed

The stopper 25 supports the flagpole 30 so that the flagpole 30 drawn out of the storage box 20 by the first driving unit 40 maintains a horizontal state with the ground so that the angle of rotation when the flagpole 30 is pulled out is operated. It plays a role of limiting.

The stopper 25 is formed in a substantially rectangular parallelepiped shape, and the top surface of the stopper 25 has a step so that the second detection sensor 62 of the detection unit 60 detects whether the drawing operation is completed when the flagpole 30 is hoisted. Is formed.

The flagpole 30 is formed in a cylindrical shape provided with a recovery space for recovering the machine 12 therein, the lower end of the flagpole 30 is coupled to the connecting shaft 43 of the first drive unit 40, the flagpole 30 On one side of the slit is formed a slit 31 extending in length equal to or slightly longer than the width of the group so that the group 12 is hoisted and recovered.

Inside the flagpole 30 is provided with a rotating shaft 32 for rotating and hoisting and recovering the machine 12, the lower end of the rotating shaft 32 is engaged with the worm gear 52 of the second drive unit 50 ( 33) is installed.

The worm wheel 33 is coupled to the lower end of the rotation shaft 32 serves to transmit the rotational force of the worm gear 52 to the rotation shaft 32.

On the other hand, a bearing (not shown) is installed between the rotation shaft 32 and the flagpole 30 to prevent the rotational force of the rotation shaft 32 from being transmitted to the flagpole 30.

The first driving unit 40 is connected to the first motor 41 generating the rotational force to receive and withdraw the flagpole 30, the speed reducer 42 and the speed reducer 42 which slow down the rotational speed of the first motor 41. And a connecting shaft 43 rotatably coupled to the second support plate 232.

The lower end of the flagpole 30 is coupled to the central portion of the connecting shaft 43.

The second driving unit 50 is installed on the shafts of the second motor 51 and the second motor 51 generating the rotational force so as to hoist and recover the flagpole 30 to flag the rotational movement of the second motor 52. And a worm gear 52 which transmits to the worm wheel 33 of 30.

The detection unit 60 is installed on one side of the inner surface of the storage box 20 of the first detection sensor 61 and the stopper 25 installed on the bottom surface of the storage box 30 to detect whether the storage operation of the flagpole 30 is completed. It is installed on the upper surface includes a second detection sensor 62 for detecting whether the extraction operation of the flagpole 30 is completed.

The first and second detection sensors 61 and 62 may be provided with various sensors such as a proximity sensor, an ultrasonic sensor, and a laser sensor for detecting an object within a predetermined distance.

In addition, as shown in FIG. 3, the control panel 26 in which the control unit 70 is installed inside the storage box 20 is separately installed.

Like the storage box 20, the control panel 26 is formed in a rectangular parallelepiped shape using a metal material having corrosion resistance, and the control panel 26 directly receives various operation commands from a manager as shown in 6. ) And a display unit 28 for displaying the operation state.

The operation unit 27 is a power switch for receiving a power supply command to supply the supply power supplied to the street light 11 to the control unit 70, the first and second drive unit (40, 50), the first drive unit (40) The first driving switch receives the driving command and the driving stop command, and the second driving switch receives the driving command and the driving stop command of the second driving unit 50.

The display unit 28 includes a power lamp indicating whether or not supply power is supplied, and an abnormality display lamp indicating whether or not an abnormality occurs during the rotational movement of the flag pole 30 by the first driving unit 40.

The control unit 70 is a command input through the power switch of the operation unit 27 and the first and second drive switch and the detection signal of the first and second detection sensors 61 and 62 during the rotational movement of the flag pole 30. On the basis of this, the driving of the first and second driving units 40 and 50 is controlled.

That is, the controller 70 determines whether the storing operation and the withdrawal operation are completed and whether an abnormality occurs according to the detection signals of the first and second detection sensors 61 and 62.

If, during the driving of the first drive unit 40 and storing or withdrawing the flagpole, the machine 12 is caught in the receiving hole 21 of the storage box 20 and the rotation of the flagpole 30 is stopped. When the abnormal operation occurs, the controller 70 stops driving the first driver 40 and controls the abnormal display lamp of the display unit 28 to light up.

Here, the controller 70 stores the first reference time required for the storing operation and the withdrawal operation of the first driving unit 40 in a memory (not shown) provided therein, and causes the first reference time to be abnormal. If exceeded, abnormality is determined.

In addition, the control unit 70 controls the second driving unit 50 to be driven during the hoisting and retrieving operation of the machine 12 for a preset second reference time in a memory provided therein.

The first and second reference time may be changed according to various conditions such as the rotation speed, the reduction ratio, the size of the machine and the rotation radius of the flagpole of the first and second motor.

For example, in the present embodiment, the first reference time is set to about 20 seconds and the second reference time is set to about 10 seconds.

Meanwhile, in the present exemplary embodiment, the control panel 26 is provided with the first and second driving switches, and the controller 70 controls the first and second driving units by operating the first and second driving switches. The present invention is not necessarily limited thereto.

For example, the present invention includes only a power switch in the control panel 26, the control unit 70 selectively drives the first and second driving units 40 and 50 as the power switch is turned on / off. The storage and withdrawal operations of 12) and the hoisting and retrieving operations can be changed according to a preset operation method.

That is, when the power switch is turned on and the power supply command is input, the control unit 70 drives the first driving unit 40 to draw the flagpole 30 out of the storage box 20, and then the second detection sensor 62. In accordance with the detection signal detected by the flagpole 30 in the control unit to drive the second driving unit 50 to hoist (12).

On the other hand, when the power switch is turned off, the control unit 70 drives the second driving unit 50 to recover the flag 12 into the flagpole 30, and drives the first driving unit 40 to store the flagpole ( 20) Control to be stored inside.

Subsequently, when the first detection sensor 61 detects the flagpole 30, the controller 70 stops the driving of the first driving unit 40 to stop the storing operation according to the detection signal of the first detection sensor 61. Control to stop.

Hereinafter, with reference to Figure 7 will be described in detail a control method of the machine hoisting apparatus according to a preferred embodiment of the present invention.

7 is a flowchart illustrating a step-by-step control method of the machine hoisting apparatus according to a preferred embodiment of the present invention.

In the present embodiment, only the power switch is provided in the control panel 26, and the drawing and hoisting operation and the retrieval and storing operation of the machine 12 are sequentially performed according to the power switch on / off operation.

However, the present invention includes a power switch and a first and second drive switch in the control panel 26 can be changed to perform the drawing operation, the hoisting operation, the retrieval operation and the storing operation according to the operation of each switch. Care must be taken.

As shown in FIG. 7, the control method of the air hoisting device according to the preferred embodiment of the present invention is started while the power switch of the control panel 26 is turned on to supply power to the air hoisting device 10 (S10). ).

The control unit 70 receiving the supply power controls the driving of the first driving unit 40 to draw out the flagpole 30 stored in the storage box 20 to the outside (S11).

Then, while the first motor 41 of the first driving unit 40 rotates in one direction, the flagpole 30 rotates about the lower end connected to the connecting shaft 43 by the rotational force of the first motor 41. Through the storage hole 21 of the storage box 20 is withdrawn to the outside of the storage box 20.

At this time, the second detection sensor 62 installed on the upper surface of the stopper 25 detects the flagpole 30 when the flagpole 30 rotates and is supported on the top surface of the stopper 25 (S12), and the control unit 70. The control to stop the driving of the first drive unit 40 in order to end the withdrawal operation of the flagpole 30 according to the detection signal of the second detection sensor 62 (S13).

However, if the detection signal of the second detection sensor 62 does not occur until after the preset first reference time, for example, about 20 seconds has elapsed after starting the withdrawal operation in step S12, the control unit 70 withdraws it. After determining that an abnormality has occurred during operation, the driving of the first driving unit 40 is stopped and the abnormal display lamp of the display unit 28 is turned on, and then the operation of the hoisting device 10 is terminated (S15). .

After performing step S13, the control unit 70 controls to rotate the second motor 51 of the second driving unit 50 in one direction to hoist the machine 12 recovered in the flagpole 30. do.

Thus, when the worm gear 52 is rotated by the driving of the second motor 51, the worm wheel 33 engaged with the worm gear 52 rotates while the rotating shaft 32 installed inside the flag pole 30 rotates. ) Is hoisted to the lower portion of the flagpole 30 through the slit 31 (S16).

Herein, the controller 70 drives the second motor 51 for a preset second reference time, for example, about 10 seconds, and stops driving the second motor 51 when the second reference time elapses.

In this way, the hoisted machine will remain hoisted until a recovery operation command is input from the administrator.

When the power switch of the operation unit 27 is turned off and a recovery operation command is input (S17), the control unit 70 rotates the second motor 51 of the second driving unit 50 during the hoisting operation of the machine 12. Control to rotate in the reverse direction.

Thus, as the worm gear 52 rotates in the reverse direction by the reverse driving of the second motor 51, the worm wheel 33 and the rotating shaft 32 engaged with the worm gear 52 rotate in the reverse direction and are hoisted out of the flagpole 30. The group 12 is wound around the rotating shaft 32 and recovered into the flagpole 30 (S18).

Here, the controller 70 drives the second motor 51 in the reverse direction for a preset second reference time, for example, about 10 seconds, and stops driving the second motor 51 when the second reference time elapses.

Subsequently, the control unit 70 controls the driving of the first driving unit 40 to accommodate the flagpole 30 from which the machine 12 is collected into the storage box 20 (S19).

Then, while the first motor 41 of the first driving unit 40 rotates in the reverse direction of the rotational direction during the withdrawal operation of the flagpole 30, the flagpole 30 is connected to the connecting shaft by the rotational force of the first motor 41 ( It is received into the storage box 20 through the receiving hole 21 of the storage box 20 by rotating upward toward the lower end connected to the 43.

At this time, the first detection sensor 61 installed on one inner surface of the storage box 20 detects an upper portion of the flagpole 30 received into the storage box 20 (S20), and the control unit 70 detects the first detection sensor 61. In order to end the storing operation of the flagpole 30 in accordance with the detection signal of the control to control to stop the driving of the first driving unit 40 (S21).

If the detection signal of the first detection sensor 61 does not occur until after a preset first reference time, for example, about 20 seconds has elapsed after starting the storing operation of the flagpole 30 in step S20, the controller 70 determines that an abnormality has occurred during the storing operation, stops the driving of the first driving unit 40 and controls the abnormal display lamp of the display unit 28 to light up, and then terminates the operation of the hoisting device 10. Control (S23).

After performing step S21, the control unit 70 terminates after controlling all operations of the hoisting device 10 to stop.

Through the above-described process, the present invention drives the first drive unit to accommodate the flagpole inside the storage box or withdraw it to the outside of the storage box, and drive the second drive unit to recover the flag collected on the flagpole or to recover the flag into the flagpole.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is used to store a variety of flags used on the flag, municipality, and various rows on a column such as a street lamp horizontally with the ground and stored in a storage box with a simple operation.

10: flag hoist 11: street light
12: week 20: locker
21: hole 22: support bracket
23: first support 231: first support plate
232: second support plate 24: second support
25: stopper 26: control panel
27: operation unit 28: display unit
30: Flagpole 31: Slit
32: axis of rotation 33: worm wheel
40: first drive part 41: first motor
42: reducer 43: connecting shaft
50: second drive unit 51: second motor
52: worm gear 60: detector
61: first detection sensor 62: second detection sensor
70:

Claims (9)

A flagpole which is accommodated in the storage box or drawn out to the outside of the storage box and is provided with a rotating shaft for hoisting and recovering the device therein, and a slit for hoisting the device is formed;
A first driving part including a first motor to rotate about the lower end of the flagpole;
A second driving part including a second motor to rotate or rotate the rotary shaft to hoist or retrieve the machine;
A detector configured to detect whether the receiving operation and the withdrawal operation of the flagpole are completed when the first driving unit is driven;
A controller configured to control driving of the first and second drivers based on a detection signal of the detector;
An operation unit including a power switch configured to receive a power supply command to supply power to drive the first and second drivers; And
And a display unit having a power display lamp for indicating whether power is supplied or an abnormality display lamp for displaying an abnormality when an abnormality occurs.
The detection unit is installed on the inner surface of the storage box and the first detection sensor for detecting the flagpole accommodated into the storage box, and the second detection sensor for detecting the flagpole is installed on the bottom surface side of the storage box and drawn out of the storage box; Including,
The control unit includes a memory for storing the first and second reference time for driving the first and second motor, respectively,
The controller drives the first driver if the detection signals of the first and second detection sensors are not generated until the second reference time elapses after the storage and withdrawal operation of the flagpole begins. Stopping and controlling to turn on the abnormality display lamp. The method of claim 1,
A first support on the bottom surface of the storage box in which the first driving unit is installed;
A second support on which the second driving part is installed;
The stopper is provided to support the flagpole during the extraction operation of the flagpole to limit the rotation angle,
The second sensor is a hoisting device, characterized in that installed on the upper surface of the stopper. 3. The method according to claim 1 or 2,
The first driving unit further includes a connecting shaft connected to the lower end of the flagpole to transmit the rotational motion of the first motor to the flagpole, and a reducer to reduce the rotational speed of the first motor to the connecting shaft. ,
And the second driving part further comprises a worm gear installed at the shaft of the second motor, and a worm wheel installed at a lower end of the rotating shaft and engaged with the worm gear. The method of claim 1,
And driving the second motor to stop the driving of the second motor when the second reference time elapses after driving the second motor. delete The method of claim 1,
And the operation unit further comprises first and second drive switches for receiving operation commands for driving the first and second drive units. (a) driving the first driving unit to receive power and draw the flagpole out of the storage box;
(b) driving the second drive unit to lift the recovered unit inside the flag pole when the withdrawal operation of the first drive unit is completed;
(c) driving a second driving unit in a reverse direction when a recovery operation command is input to recover the group hoisted in step (b) into the flagpole; And
(d) driving the first driving unit to store the flagpole from which the group is recovered in step (c) into the storage box,
Steps (a) and (c) are respectively
If the detection signal of the first or second detection signal is generated within a preset first reference time after driving the first driving unit, the driving of the first driving unit is stopped, and then proceeds to the next steps (b) and (d),
When the detection signal of the first or second detection sensor is not generated until the first reference time has elapsed, it is determined that the abnormality occurs and stops driving of the first driving unit and guides the fact that the abnormality occurs. Control method of air hoisting device. delete 8. The method of claim 7,
Step (b) and step (d) is a hoisting device, characterized in that each drive the second drive for a predetermined second reference time after the second reference time elapses to stop the driving of the second drive unit Control method.

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