KR102558239B1 - Door device for mast and its operation method - Google Patents

Abstract

The present invention relates to a door device for a mast and a method for operating the same, which is a door device installed on a mast, including a door movable in a vertical direction, and including a door unit installed on the mast; a driving unit generating power to move the door; a measuring unit installed on the door to measure the magnitude of force applied to the door; and a control unit capable of controlling the operation of the drive unit according to the magnitude of the measured force, and may suppress or prevent occurrence of a jamming accident when the door is moved to close the inner space of the mast.

Description

Door device for mast and its operation method {Door device for mast and its operation method}

The present invention relates to a door device for a mast and a method for operating the same, and more particularly, to a door device for a mast capable of preventing a risk of being caught in an accident and an operating method thereof.

In general, a mast is installed on a ship. A mast is a pole erected vertically on the deck of a ship. In addition, communication equipment such as signals, antennas, and radars are installed on the mast. A ship can acquire navigation information through communication equipment installed on a mast, and can search and track other ships or aircraft. Therefore, masts are indispensably installed in ships that need to search and track enemy ships or fighter jets. Recently, an integrated mast in which a transmitting antenna and a receiving antenna are integrated and installed on one mast is being used.

Meanwhile, a door is installed on the integrated mast to reduce the reflection area of the radar, and the door is remotely opened and closed. The door is opened and closed by the operator operating the opening and closing device remotely when operating equipment installed on the integrated mast or servicing equipment. However, since the door is not equipped with a safety device to prevent a jamming accident, when an operator accidentally closes the door while servicing equipment on the integrated mast, a safety accident occurs in which the operator gets caught in the door.

KR10-2129503 B

The present invention provides a door device for a mast capable of preventing a jamming accident and a method of operating the same.

A door device for a mast according to an embodiment of the present invention is a door device installed on a mast, includes a door movable in a vertical direction, and includes a door unit installed on the mast; a driving unit generating power to move the door; a measuring unit installed on the door to measure the magnitude of force applied to the door; and a control unit capable of controlling the operation of the drive unit according to the magnitude of the measured force.

The measuring unit may be installed at a lower end of the door.

The measuring unit may include at least one measuring member capable of measuring a magnitude of force acting in a direction opposite to a moving direction of the door.

The measurement unit may include a contact member disposed below the at least one measurement member; and a force transmission member capable of extending in the vertical direction and connecting the contact member to the at least one measuring member.

It may include a protective case installed on the mast to accommodate the measurement unit when the door is closed and having an accommodation space with an open top.

An inner depth of the protective case may be longer than a vertical length of the measuring unit, and a width of the protective case may be smaller than a width of the door.

The control unit may stop the operation of the driving unit when the magnitude of the measured force is greater than the magnitude of the preset force.

The door may include a first door; a second door disposed under the first door; and a moving member for connecting the second door to the first door in a vertical direction.

A guide groove may be formed on one surface of the first door facing the second door, extending in a vertical direction and into which the movable member may be inserted and moved, and the guide groove may be formed to restrain the movable member.

The door may include a first door; a second door disposed below the first door; a connection member capable of detachably connecting the second door to the first door and installed on at least one of the first door and the second door; and a support member capable of supporting the second door to the first door.

The second door includes a seating groove in which the connecting member can be seated, and the connecting member can be separated from the seating groove when a reaction force is applied to the second door.

The supporting member may include a wire, and the wire may support the second door to the first door when the connecting member is separated from the seating groove.

A method of operating a door device for a mast according to an embodiment of the present invention is a method of operating a door device for a mast, comprising: installing a door on the mast to be movable in one direction in order to open and close an inner space of the mast; moving a door to close the inner space; measuring the magnitude of force applied to the door; and determining whether or not to stop moving the door according to the magnitude of the measured force.

The process of measuring the magnitude of the force may include a process of measuring a force acting in a direction opposite to the movement direction of the door.

The process of installing the door may include installing a part of the door on the mast so as to be movable in a direction to open and close the inner space; And a step of connecting the rest of the door to a part of the door so as to be movable in a direction of opening and closing the inner space, wherein the step of measuring the magnitude of the force may include a step of stopping the movement by supporting the rest of the door to an obstacle in the direction of movement of the door.

The process of providing the door may include installing a part of the door on the mast so as to be movable in a direction to open and close the inner space; and connecting the rest of the door to a part of the door so as to be detachably connected to the part of the door, and supporting the rest of the door to the part of the door.

In the process of determining whether to stop the movement of the door, if the magnitude of the measured force is greater than the magnitude of the preset force, it is determined to stop the movement of the door, and if the magnitude of the measured magnitude is smaller than the magnitude of the preset force, it can be determined not to stop the movement of the door.

In the process of determining whether to stop the movement of the door, when the force applied to the door is measured, it is determined to stop the movement of the door, and when the force applied to the door is not measured, it is determined not to stop the movement of the door.

According to an embodiment of the present invention, in order to close the inner space of the mast, it is possible to suppress or prevent the occurrence of a jamming accident when moving the door. That is, when the door contacts or collides with an obstacle or worker in the moving direction of the door, the movement of the door is automatically stopped, thereby preventing a safety accident in which the obstacle or the worker gets caught in the door. In particular, when an obstacle or an operator collides with the door, the impact applied to the obstacle or the operator can be alleviated by dividing the door to block transmission of the driving force of the door to the obstacle or the operator.

1 is a view schematically showing the structure of a mast.
2 is a block diagram schematically showing a door device for a mast according to an embodiment of the present invention.
3 is a front view and a cross-sectional view showing a door device for a mast according to an embodiment of the present invention.
4 is a view showing an example of a measuring unit of a door device for a mast according to an embodiment of the present invention.
5 is a front view and a cross-sectional view showing a door device for a mast according to a modified example of the present invention.
6 is a cross-sectional view showing an operating state of a door device for a mast according to a modified example of the present invention.
7 is a cross-sectional view showing an operating state of a door device for a mast according to another modified example of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments of the present invention make the disclosure of the present invention complete and those skilled in the art It is provided to fully inform the scope of the invention. In order to explain the invention in detail, the drawings may be exaggerated, and like reference numerals refer to like elements in the drawings.

1 is a view schematically showing the structure of a mast.

Referring to FIG. 1, the mast 10 serves as a high-tech sensor and communication antenna of a ship, and may include an Interated Mast (I) in which detection sensors such as Infra-Red Search and Track (IRST) and Identification, Friend or Foe (IFF), and communication antennas such as VHF (Very High Frequency) and UHF (Ultra-High Frequency) are integrated into one. This integrated mast can improve the interference problem between the detection sensor and the communication antenna, thereby enhancing the survivability of the battleship and maximizing its combat capability.

The mast 10 may have an internal space capable of storing various equipment for operating a detection sensor, a communication antenna, and the like, and this internal space may be divided into a plurality of floors. In addition, hatches may be installed between each floor so that workers can move between the floors. For example, the inside of the mast 10 is divided into five layers, and hatches that can be opened and closed may be installed between each layer. Accordingly, a worker may enter the inner space of the body and access and repair or repair equipment located on different floors while moving between floors. However, the structure and shape of the mast and the number of layers provided therein are not limited thereto and may be variously changed.

In addition, a door device 100 capable of opening and closing the inner space may be installed in the mast 10 . The door device 100 may open or close the internal space in order to operate, repair, or maintain equipment stored inside the mast 10 .

2 is a block diagram schematically showing a door device for a mast according to an embodiment of the present invention, FIG. 3 is a front view and a cross-sectional view showing a door device for a mast according to an embodiment of the present invention, and FIG.

2 and 3, the mast door device 100 according to an embodiment of the present invention includes a door 111 movable in a vertical direction, a door unit 110 installed on the mast 10, a driving unit 130 generating power for moving the door 111, a measuring unit 120 installed on the door 111 to measure the magnitude of force applied to the door 111, and measuring It may include a control unit 140 capable of controlling the operation of the driving unit according to the magnitude of the applied force. Hereinafter, the direction in which the door 111 moves is referred to as a vertical direction (y), and a direction crossing the vertical direction (y) is referred to as a horizontal direction (x). At this time, depending on the shape of the mast 10, the vertical direction (y) may be a direction extending perpendicular to the horizontal direction (x), or may be a direction extending obliquely to one side. In addition, the vertical direction (y) may correspond to the height direction of the door 111, and the horizontal direction (x) may correspond to the width direction of the door 111.

The door unit 110 may include a door 111 and a support frame 112 installed to form a movement path of the door 111 and support the door 111 . In addition, the door unit 110 may include a friction preventing member 113 for preventing friction between the door 111 and the support frame 112 .

The door 111 may be formed in a plate shape larger than an opening (not shown) formed to expose the inner space of the mast 10 .

The support frame 112 may be installed to extend in the vertical direction (y) on at least one side of the opening. For example, the support frame 112 may be installed side by side on both sides of the opening. In addition, the support frame 112 may be formed such that the anti-friction member 113 can be inserted.

At least two anti-friction members 113 may be respectively connected to both sides of the door 111 . At this time, the anti-friction member 113 allows the door 111 to move along the direction in which the support frame 112 extends so that at least one of the anti-friction members 113 can be separated from the support frame 112, and can reduce friction occurring between the door 111 and the support frame 112. For example, the support frame 112 may include a rail, and the anti-friction member 113 may include a roller, a wheel, a ball, and the like that may rotate in engagement with the rail.

The driving unit 130 may generate power to move the door 111 . The driving unit 130 may be installed on one surface, for example, the rear surface of the door 111 to move the door 111 in the vertical direction (y), and may be fixed to the mast 10 .

The measuring unit 120 may include a measuring member 121 installed at a lower end of the door 111 to measure the magnitude of force applied to the door 111 when the door 111 is closed. The measuring member 121 is installed at the lower end of the door 111 to contact or collide with an obstacle O or an operator in the direction in which the door 111 is closed, and thus measure the magnitude of force applied to the door 111. This measuring member 121 may be provided with a sensor capable of measuring the magnitude of force, such as a load cell. One measuring member 121 may be installed in the door 111 or a plurality of measuring members 121 may be installed. When one measuring member 121 is installed, it may be installed at the center in the width direction of the door 111 where an obstacle or a worker's jamming usually occurs. Alternatively, when a plurality of measuring members 121 are installed, they may be installed at regular intervals or preset intervals in the width direction of the door 111 .

4, the measuring unit 120 may further include a contact member 122 disposed under the measuring member 121, and a force transmission member 123 that is stretchable in the vertical direction and connects the contact member 122 to the measuring member 121. The contact member 122 serves as a cover protecting the measuring member 121 and at the same time serves to contact and sense obstacles O of various sizes that may be located in the width direction of the door 111 . The contact member 122 may be formed to have a bar shape extending in the width direction of the door 111, that is, in the horizontal direction (x), and may be formed to have a length shorter than the width of the door 111. This is to insert the measurement unit 120 into the protective case 150 to be described later. That is, when the door 111 is closed and the measurement unit 120 contacts or collides with the mast 10, the magnitude of force is measured and the magnitude of the measured force can be transmitted to the control unit 140. In this case, it is because the control unit 140 may determine that a jamming accident has occurred and may malfunction. The contact member 122 may be directly connected to the measuring member 121, but in order to secure a space between the measuring member 121 and the obstacle O or between the door 111 and the obstacle O, the force transmission member 123 may be installed between the contact member 122 and the measuring member 121. The force transmission member 123 may secure a space between the contact member 122 and the measurement member 121 and may be provided as a structure capable of transmitting the force applied to the contact member 122 to the measurement member 121. In addition, when the contact member 122 collides with the obstacle O or the operator, the force transmission member 123 may be provided as a structure that is flexible in the vertical direction y so as to prevent damage to the obstacle O or the measuring member 121 and to prevent the operator from being injured. For example, the force transmission member 123 may be provided with a spring, an air tube, or the like.

A protective case 150 having an accommodation space for accommodating the measuring unit 120 when the door 111 is closed may be installed in the mast 10 . The protective case 150 may be installed to face the door 111 or the measuring unit 120 in a direction in which the door 111 is closed. In addition, the protective case 150 may be formed in a hollow shape with an open top to accommodate the measuring unit 120 and may be installed to be buried in the mast 10 . At this time, in order to prevent the measuring unit 120 from contacting the inner bottom of the protective case 150 , the inner depth of the protective case 150 may be longer than the vertical length of the measuring unit 120 . In addition, when the door 111 is inserted into the protective case 150, the measuring unit 120 may come into contact with the inner bottom of the protective case 150, so that the door 111 is prevented from being inserted. The width of the protective case 150 may be smaller than that of the door 111.

The controller 140 may control the operation of the driving unit 130 to open and close the door 111 . Also, the control unit 140 may control the operation of the driving unit 130 according to the magnitude of the force measured by the measuring unit 120 . For example, the control unit 140 may control the operation of the driving unit 130 to close the door 111, and if force is applied to the door 111 in the process of closing the door 111, the operation of the driving unit 130 may be controlled to stop the closing operation of the door 111. At this time, the control unit 140 may control the operation of the driving unit 130 to continue the operation of closing the door 111 when the magnitude of the force measured by the measurement unit 120, for example, the measurement member 121, is smaller than the preset magnitude of force. Alternatively, the control unit 140 may control the operation of the driving unit 130 to stop closing the door 111 when the magnitude of the force measured by the measuring member 121 is greater than the magnitude of the preset force. Here, the magnitude of the preset force means a magnitude capable of preventing a jamming accident.

In addition, the control unit 140 may control the operation of the driving unit 130 according to the change in the magnitude of the measured force. That is, the control unit 140 measures the magnitude of the force applied to the door 111 in the process of closing the door 111, and if the magnitude of the measured force is maintained or increased for a preset time, the operation of the driving unit 130 can be controlled to stop the closing operation of the door 111. On the other hand, in the process of closing the door 111, the control unit 140 measures the magnitude of the force applied to the door 111, and if the magnitude of the force measured for a preset time gradually decreases or the magnitude of force is not measured, the control unit 140 may control the operation of the driving unit 130 to continue the operation of closing the door 111.

Through this configuration, it is possible to suppress or prevent an accident of being caught in a door.

On the other hand, in the process of closing the door 111, a time difference may occur between the process of measuring the magnitude of the force applied to the door 111 due to contact or collision with an obstacle O in the direction in which the door 111 is closed or a worker, and the process of stopping the closing operation of the door 111 using this. Due to the time difference generated in this way, the obstruction O or the door 111 may be damaged, and in particular, a safety accident in which a worker may be injured may occur. Therefore, it is possible to prevent a safety accident from occurring by additionally providing a safety device. In this case, the door 111 may be configured to be divided so as to block transmission of power generated by the driving unit 130, for example, driving force to the obstruction O or the operator. Accordingly, it is possible to mitigate the impact of the obstacle O or the operator, particularly the operator, by the driving force of the driving unit 130 .

5 is a front view and a cross-sectional view showing a door device for a mast according to a modified example of the present invention, FIG. 6 is a cross-sectional view showing an operating state of a door device for a mast according to a modified example of the present invention, and FIG. 7 is a cross-sectional view showing an operating state of a door device for a mast according to another modified example of the present invention. Hereinafter, overlapping descriptions of the mast door device according to the above-described embodiment will be omitted.

Referring to FIG. 5 , a door device for a mast according to a modified example of the present invention may include a first door 111a and a second door 111b movably installed below the first door 111a. That is, the door 111 may be formed to be divided in the vertical direction. The second door 111b may be disposed to overlap a portion of the first door 111a and may be installed to hang from the lower portion of the first door 111a by its own weight. At this time, a guide groove 114 extending in the vertical direction (y) is formed on one side of the first door 111a facing the second door 111b, for example, on the front surface of the first door 111a, and a movable member 115 movable along the guide groove 114 may be installed on the rear surface of the second door 111b facing the front surface of the first door 111a. At this time, the movable member 115 may be provided as a roller, wheel, ball, or the like, and may be rotatably connected to the second door 111b. Alternatively, a guide groove extending in the vertical direction (y) is formed on one side of the second door 111b facing the first door 111a, for example, on the rear surface of the second door 111b, and the second door 111b. A movable member movable along the guide groove may be installed on the front surface of the first door 111a facing the rear surface.

As shown in (a) of FIG. 6 , when the door 111 moves in the closing direction, there may be an obstacle O in the closing direction of the door 111 . In this case, as shown in (b) of FIG. 6, the second door 111b is supported by the obstruction O or the worker to stop descending, and the first door 111a can continue to descend. At this time, since the moving member 115 is inserted into the guide groove 114 formed in the first door 111a, the first door 111a moves along the second door 111b in a sliding manner.

As such, when the descent of the second door 111b is stopped due to being supported by the obstruction O or the worker, the measuring unit 120 measures a force equivalent to at least the weight of the second door 111b, and the control unit 140 can stop the movement of the door 111, that is, the first door 111a. Accordingly, safety accidents due to a time difference occurring between the time of measuring the magnitude of the force applied to the door 111 and the time of stopping the movement of the door 111 after the magnitude of the force applied to the door 111 is measured can be suppressed or prevented.

Referring to (a) of FIG. 7 , a door device for a mast according to another modified example of the present invention may include a first door 111a and a second door 111b movably installed below the first door 111a. That is, the door 111 may be formed to be divided in the vertical direction. At this time, the second door 111b may be connected to the first door 111a by a connecting member 117 formed to be detachable, and supported by the first door 111a by a support member 114. The second door 111b may be disposed to overlap a part of the first door 111a and supported by the first door 111a by the support member 114 . That is, a seating groove 116 in which the connecting member 117 can be seated is formed on one side of the first door 111a facing the second door 111b, and the connecting member 117 is seated. Accordingly, the connecting member 117 may be connected to the first door 111a so that the second door 111b does not shake. When a reaction force is applied to the second door 111b, the connecting member 117 may be separated from the seating groove 116. That is, when the door 111 is moved to close, when the second door 111b collides with an obstacle O or an operator in the closing direction and receives force, the connecting member 117 may be separated from the seating groove 116. In addition, the connecting member 117 may be provided with such a support member 114 as a wire, and even when the connecting member 117 is cut, the second door 111b is connected to the first door 111a. It can be formed with a length that can support it so that it does not descend any further. Accordingly, power and driving force from the driving unit 130 are not directly applied to the second door 111b until the operation of the door 111 is stopped, so that the occurrence of a jamming accident can be suppressed or prevented. In particular, it is possible to prevent a safety accident in which a worker is injured by the driving force.

In this way, when the connecting member 117 is separated from the seating groove 116, the upper part of the second door 111b is suspended from the first door 111a by the support member 114, and the lower part is an obstruction (O). It is possible to maintain contact with the operator. In this case, the measurement unit 120 measures the magnitude of force equivalent to at least the weight of the second door 111b, and the controller 140 can stop the movement of the door 111, that is, the first door 111a. Accordingly, safety accidents due to a time difference occurring between the time of measuring the magnitude of the force applied to the door 111 and the time of stopping the movement of the door 111 after the magnitude of the force applied to the door 111 is measured can be suppressed or prevented.

Hereinafter, a method of operating a door device for a mast according to an embodiment of the present invention will be described. A method of operating a door device for a mast according to an embodiment of the present invention may be performed using the above-described door device for a mast.

A method of operating a door device for a mast according to an embodiment of the present invention is a method of operating a door device for a mast, which includes a process of installing a door 111 on the mast 10 so as to be movable in one direction to open and close the inner space of the mast, a process of moving the door 111 to close the inner space, a process of measuring the magnitude of force applied to the door 111, and a process of determining whether to stop moving the door 111 according to the magnitude of the measured force. can

First, a door 111 may be installed on the mast 10 to open and close the inner space of the mast 10 . At this time, the door 111 may be installed to be movable in various directions such as a vertical direction (y) or a horizontal direction (x). However, here, the door 111 is installed to be movable in the vertical direction (y), closes the inner space when descending, and opens the inner space when ascending.

For example, by raising the door 111 to open the inner space of the mast 10, mounted equipment can be inspected. When the inspection of the equipment is completed, the inner space may be closed by lowering the door 111 to protect the equipment.

It is possible to lower the door 111 and measure the magnitude of force applied to the door 111 using the measuring unit 120 installed on the door 111 . This is because a jamming accident may occur when there is an obstacle O or a worker in the direction in which the door 111 is closed. Accordingly, the measurement unit 120 may measure the magnitude of force applied in the opposite direction to the direction in which the door 111 moves.

If the force is not measured by the measuring unit 120 while the door 111 is descending, it is determined that the movement of the door 111 is not stopped, and the door 111 is continuously descended to close the internal space.

On the other hand, if the force is measured by the measuring unit 120 while the door 111 is descending, the obstacle O or the operator is located in the direction in which the door 111 moves, so that the door 111 contacts or collides with the obstacle O or the operator. Therefore, it can be determined that the movement of the door 111 is stopped.

Accordingly, the control unit 140 may stop the movement of the door 111 by controlling the operation of the driving unit 130 .

Meanwhile, a time difference may occur until the control unit 140 controls the operation of the driving unit 130 using the result measured by the measuring unit 120 . Accordingly, in the process of preparing the door 111, the second door 111b is movably installed on a part of the door 111, for example, the first door 111a, or the second door 111b is detachably installed on the first door 111a. Through this configuration, in the process of moving the door 111, that is, the first door 111a and the second door 111b, in order to close the inner space of the mast 10, the second door 111b is an obstruction (O). It is possible to stop the movement as soon as it collides with the operator. Therefore, it is possible to prevent power generated from the driving unit 130 from being transmitted to the obstacle O or the worker, thereby more effectively preventing the obstacle O or the door 111 from being damaged or the worker being injured.

Thereafter, the control unit 140 may stop the movement of the door 111, that is, the first door 111a, by using the result measured by the measurement unit 120.

In the above, although preferred embodiments of the present invention have been described and illustrated using specific terms, such terms are only used to clearly explain the present invention, and the embodiments and described terms of the present invention are the following claims. It is obvious that various changes and changes can be made without departing from the spirit and scope. Such modified embodiments should not be individually understood from the spirit and scope of the present invention, and should be said to fall within the scope of the claims of the present invention.

10: mast 100: door device
110: door part 120: measuring part
130: drive unit 140: control unit

Claims (18)

As a door device installed on the mast,
a door unit including a door movable in a vertical direction and installed on the mast;
a driving unit generating power to move the door;
a measuring unit installed on the door to measure the magnitude of force applied to the door; and
Including; a control unit capable of controlling the operation of the drive unit according to the magnitude of the measured force;
the door,
first door;
a second door disposed below the first door;
a connection member capable of detachably connecting the second door to the first door and installed on at least one of the first door and the second door; and
A door device for a mast comprising a support member capable of supporting the second door to the first door. The method of claim 1,
The measuring unit is a door device for a mast installed at a lower end of the door. The method of claim 2,
The measuring unit includes at least one measuring member capable of measuring a magnitude of force acting in an opposite direction to a moving direction of the door. The method of claim 3,
The measuring unit,
a contact member disposed under the at least one measuring member; and
A door device for a mast comprising: a force transmission member capable of extending in a vertical direction and configured to connect the contact member to the at least one measurement member. The method of claim 1,
A door device for a mast comprising a protective case installed on the mast to accommodate the measuring unit when the door is closed and having a receiving space with an open top. The method of claim 5,
The inner depth of the protective case is longer than the vertical length of the measuring unit,
A door device for a mast in which the width of the protective case is smaller than the width of the door. The method of claim 1,
The control unit is capable of stopping the operation of the driving unit when the measured force is greater than the preset force. delete delete delete The method of claim 1,
The second door includes a seating groove in which the connecting member can be seated,
The connecting member is a door device for a mast that can be separated from the seating groove when a reaction force is applied to the second door. The method of claim 11,
The support member includes a wire,
The wire is a door device for a mast capable of supporting the second door to the first door when the connecting member is separated from the seating groove. A method of operating the door device for a mast according to any one of claims 1 to 7, 11 and 12,
Installing a door on the mast to be movable in one direction in order to open and close the inner space of the mast;
moving a door to close the inner space;
measuring the magnitude of force applied to the door; and
Including; determining whether to stop the movement of the door according to the magnitude of the measured force;
The process of preparing the door,
installing a part of the door to the mast so as to be movable in a direction of opening and closing the inner space; and
A step of detachably connecting a part of the door and supporting the rest of the door to a part of the door;
The process of measuring the magnitude of the force includes the step of colliding the rest of the door with an obstacle in the moving direction of the door to separate the rest of the door from a part of the door, and supporting the part of the door. Method of operating a door device for a mast. The method of claim 13,
The process of measuring the magnitude of the force includes the process of measuring a force acting in an opposite direction to the moving direction of the door. delete delete The method of claim 14,
The process of determining whether to stop the movement of the door,
If the magnitude of the measured force is greater than the magnitude of the preset force, determining to stop the movement of the door;
A method of operating a door device for a mast that determines that the movement of the door is not stopped when the measured magnitude is smaller than the preset force magnitude. The method of claim 14,
The process of determining whether to stop the movement of the door,
When the force applied to the door is measured, it is determined to stop the movement of the door;
If the force applied to the door is not measured, it is determined that the movement of the door is not stopped.

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