KR20220123855A - Helipad of drone operating system for construction and mine site management - Google Patents

Abstract

Disclosed in the present invention is a helipad for a drone, which comprises: a main platform for inducing horizontal take-off and landing of the drone; a tilt sensor for measuring an inclination of the main platform; and a controller for controlling the operation of a tilt adjusting means for making the main platform level by using sensing data of the tilt sensor. According to the present invention, stable operation of the drone is possible in mining and construction sites in mountainous terrain with many slopes.

Description

Helipad of drone operation system for construction and mine site management

The present invention relates to a helipad of a drone operation system for construction and mine site management, and more particularly, to a helipad for a drone that is mounted on the roof of a drone control vehicle to induce horizontal take-off and landing of the drone.

A drone operation system for construction/mine site management refers to a system that collects image data on the topography of a construction or mine site using a drone. The collected image data of construction/mining sites can be used for construction of precise topographic models, slope stability analysis process, and drainage analysis through various processing and analysis.

If the construction/mining site is located in a mountainous area with a large difference in elevation above sea level, it is necessary to manage drone flight smoothly, including stable take-off and landing of drones. Smooth drone flight management is related to securing high-quality drone data.

According to the prior art, the pad for drones has an effect of reducing the impact applied to the drone by using a cushion during takeoff and landing of the drone, but there is no place for the drone to take off and land, such as a dense forest, or the difference in elevation above sea level It did not lead to reliable take-off and landing of the drone on many sloped terrain.

The helipad for a drone according to an embodiment of the present invention is for the smooth take-off and landing of the drone and furthermore, the management of the drone flight.

In order to solve the above problems, as a related technology, Korean Patent Registration No. 10-1640199 relates to a safe landing guidance device for a drone. The drone is equipped with an infrared sensor and an infrared receiving means is provided in the landing area, so that infrared rays are received There is a difference in configuration and effect from the present invention that directly provides a stable take-off and landing point for a drone in that it discloses a technology for guiding a drone to a place where it is used.

As another related technology, domestic registered patent No. 10-2189033 relates to a drone hangar for a pickup truck equipped with a take-off and landing guide function and a drone operation system including the same. There is a difference in the configuration and effect of the present invention that directly provides a stable take-off and landing point of a drone in that it does not include a configuration for stable take-off and landing in an area with many slopes, such as a mountainous terrain.

Korea Registered Patent No. 10-1640199 (2016.07.15 Announcement) Korean Registered Patent No. 10-2189033 (Announced on Dec. 10, 2020)

One problem to be solved by the present invention is to enable stable take-off and landing of a drone in a terrain where it is difficult to secure a space, such as a slope or a construction or mining site.

One problem to be solved by the present invention is to provide a device capable of stably taking off and landing of a drone while also serving as a control center for the general operation of the drone.

A helipad for a drone according to an embodiment of the present invention for achieving the above object includes: a platform for inducing horizontal take-off and landing of the drone; a tilt sensor that measures the tilt of the platform; And by using the sensing data of the inclination sensor may be configured to include a controller (controller) for controlling the operation of the tilt adjustment means to make the platform horizontal.

In addition, the helipad may be configured to further include a left wing and a right wing, which extend the width of the platform.

In addition, the helipad further includes a left wing and a right wing, which extend the width of the platform, and the controller controls an actuator that drives the folding/unfolding of the left wing and the right wing can be configured to

In addition, the helipad may be configured to further include a base connected to the vehicle so that the helipad is installed on a roof or loading box of the vehicle.

In addition, the helipad may be configured to further include a housing in which the helipad installed on the roof or loading box of the vehicle is accommodated.

In addition, the inclination adjustment means may be configured to include a lift for adjusting at least one of the inclination of the platform in the X-axis direction and the inclination in the Y-axis direction.

In addition, the inclination adjusting means includes a lift that adjusts any one of the inclination in the X-axis direction and the inclination in the Y-axis direction of the platform, and the other inclination is adjusted through a shock absorber of the vehicle. do it with

In addition, the inclination adjustment means includes a lift that adjusts any one of the inclinations with a large width of change among the inclination in the X-axis direction and the inclination in the Y-axis direction of the platform, and the other inclination with a small width of change among the inclinations is It is characterized in that it is controlled through the shock absorber of the vehicle.

In addition, the lift, the first lift installed on one side of the platform; and a second lift installed on the other side of the platform, wherein the platform is connected to the first lift and a first shaft through a first shaft, and is connected to the second lift and a second shaft, so that the height of the first lift and the second lift is The inclination of the main platform may be adjusted according to a rotation angle between the platform and the lift on the first axis and the second axis according to control.

In addition, the lift, the first axis and the second axis may be configured to be movable to enable vertical up/down of the lift.

In addition, the first axis or the second axis is characterized in that it is configured to move parallel to the platform in proportion to the length change amount of the first lift or the second lift.

In addition, the controller is characterized in that the up/down of the first lift and the second lift is controlled within a range of a maximum difference in height between the first lift and the second lift that does not interfere with the platform.

In addition, the helipad, the first shaft housing for guiding the movement of the first axis; and a second shaft housing for guiding the movement of the second shaft, wherein the controller controls up/down of the first lift or the second lift within a movable range of the first shaft or the second shaft within each shaft housing. characterized by controlling.

In addition, the helipad, the first shaft housing includes a first rail, the second shaft housing includes a second rail, the first shaft moves along the first rail, and the second shaft moves along the second rail. characterized in that

In addition, the controller is characterized in that according to the operation of the inclination control means to output a warning alarm when the inclination measurement value in the X-axis or Y-axis direction by the inclination sensor corresponds to a threshold value.

Specific details of other embodiments are included in "Details for carrying out the invention" and attached "drawings".

Advantages and/or features of the present invention, and methods for achieving them, will become apparent with reference to various embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may also be implemented in a variety of different forms, and each embodiment disclosed herein only makes the disclosure of the present invention complete, It is provided to fully inform those of ordinary skill in the art to which the scope of the present invention belongs, and it should be understood that the present invention is only defined by the scope of each of the claims.

According to the present invention, stable operation of the drone is possible in mines and construction sites in mountainous terrain with many slopes.

In addition, it is possible to horizontally control the helipad where the drone takes off and land.

1 is a front view of a helipad for a drone according to an embodiment of the present invention.
2 is a left side view of a helipad for a drone according to an embodiment of the present invention.
3 is a right side view of a helipad for a drone according to an embodiment of the present invention.
4 is a plan view of a helipad for a drone according to an embodiment of the present invention.
5 is a bottom view of a helipad for a drone according to an embodiment of the present invention.
6 is a rear view of a helipad for a drone according to an embodiment of the present invention.
7 is a perspective view of a helipad for a drone according to an embodiment of the present invention.
8 is an exemplary view of a tilt sensor according to an embodiment of the present invention.
9 is a block diagram of a controller for controlling a helipad for a drone according to an embodiment of the present invention.
10 is an exemplary diagram for explaining a lift operation of a helipad for a drone according to an embodiment of the present invention.
11 is an exemplary view of a vehicle roof equipped with a helipad for a drone according to an embodiment of the present invention.

Before describing the present invention in detail, the terms or words used herein should not be construed as being unconditionally limited to their ordinary or dictionary meanings, and in order for the inventor of the present invention to describe his invention in the best way It should be understood that the concepts of various terms can be appropriately defined and used, and further, these terms or words should be interpreted as meanings and concepts consistent with the technical idea of the present invention.

That is, the terms used in this specification are only used to describe preferred embodiments of the present invention, and are not used for the purpose of specifically limiting the content of the present invention, and these terms represent various possibilities of the present invention. It should be noted that the term has been defined with consideration in mind.

Also, in this specification, it should be understood that, unless the context clearly indicates otherwise, the expression in the singular may include a plurality of expressions, and even if it is similarly expressed in plural, it should be understood that the meaning of the singular may be included. .

In the case where it is stated throughout this specification that a component "includes" another component, it does not exclude any other component, but further includes any other component unless otherwise indicated. It could mean that you can.

Furthermore, when it is described that a component is "exists in or is connected to" of another component, this component may be directly connected or installed in contact with another component, and a certain It may be installed spaced apart by a distance, and in the case of being installed spaced apart by a certain distance, a third component or means for fixing or connecting the corresponding component to another component may exist, and now It should be noted that the description of the components or means of 3 may be omitted.

On the other hand, when it is described that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the third element or means does not exist.

Likewise, other expressions describing the relationship between components, such as "between" and "immediately between", or "adjacent to" and "directly adjacent to", have the same meaning. should be interpreted as

In addition, if terms such as "one side", "other side", "one side", "other side", "first", "second" are used in this specification, with respect to one component, this one component is It is used to be clearly distinguished from other components, and it should be understood that the meaning of the component is not limitedly used by such terms.

In addition, in this specification, terms related to positions such as "upper", "lower", "left", "right", etc., if used, should be understood as indicating a relative position in the drawing with respect to the corresponding component, Unless an absolute position is specified for their position, these position-related terms should not be construed as referring to an absolute position.

In addition, in this specification, in specifying the reference numerals for each component of each drawing, the same component has the same reference number even if the component is indicated in different drawings, that is, the same reference is made throughout the specification. The symbols indicate the same components.

In the drawings attached to this specification, the size, position, coupling relationship, etc. of each component constituting the present invention are partially exaggerated, reduced, or omitted for convenience of explanation or in order to sufficiently clearly convey the spirit of the present invention. may be described, and thus the proportion or scale may not be exact.

In addition, in the following, in describing the present invention, a detailed description of a configuration determined that may unnecessarily obscure the subject matter of the present invention, for example, a detailed description of a known technology including the prior art may be omitted.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the related drawings.

A helipad for a drone according to an embodiment of the present invention is one of the components included in a control system for a drone used for terrain observation at construction and mining sites. The control system for the drone may include a first subsystem for managing drone flight and a second subsystem for processing data collected through the drone. The drone helipad may be a component of the first subsystem for drone flight management.

A control system for a drone may be implemented in the form of a drone control vehicle. A helipad for drones may be provided in the roof or loading box of the drone control vehicle. A controller for controlling the helipad for a drone may be provided inside and outside the drone control vehicle. Hereinafter, the physical configuration and operation mechanism of the helipad for a drone will be described.

1 is a front view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 1 , the helipad 100 is depicted along with the XY coordinate side so that the plane on which the drone actually takes off and land is the front. Specifically, the helipad 100 includes a central platform 111 , a left wing 112 , a right wing 113 and a base 120 are depicted. .

The platform 111 corresponds to a plane on which the drone actually takes off and land. The platform 111 may be made of a single material such as wood, metal, plastic, or a combination thereof. For example, the surface of the platform 111 may be coated using a film, paint, etc. on a flat panel. On one side of the platform 111, a mark indicating that it is the take-off and landing place of the drone is displayed, and a buffer, for example, a mat, a silicone pad, etc. for alleviating the shock that may be transmitted during take-off and landing of the drone may be provided. have.

A tilt adjustment means for driving the platform 111 may be provided on the rear surface of the platform 111 to adjust the level of the platform. The inclination adjusting means may adjust the inclination of the platform 111 with respect to the base 120 while connecting the platform 111 and the base 120 . The tilt adjustment means may be driven manually or automatically. Manual tilt adjustment means, used in a camera tripod, may be implemented in the form of a ball head.

The automatic tilt adjustment means may be implemented in the form of a lift driven by motor power. The lift will be described later.

The left wing 112 corresponds to means for extending the area of the platform 111 to the left. The left wing 112 may be implemented with the same or a different material than that of the platform 111 . For a smooth folding/unfolding operation of the left wing 112 , a material lighter than the material of the platform 111 may be selected. The helipad 100 may be configured to include an actuator for driving the folding/unfolding operation of the left wing 112 . The actuator may use motor power and may be configured to include a hinge connecting the left wing 112 and the platform 111 .

The right wing 113 corresponds to a means for extending the area of the platform 111 to the right. The description of the left wing 111 above may be applied to the right wing 113 as it is.

The housing 120 is a component positioned at the bottom of the helipad 100 and serves to support the tilt adjustment means connected to the platform 111 . The inner bottom surface of the housing 120 may be connected to the inclination adjusting means, and the outer bottom surface may be connected to and fixed to the roof or loading box of the vehicle. The housing 120 may be accommodated inside the platform 111 of the helipad 100 . The housing 120 may be configured to include a base and a cover corresponding to the side walls, the bottom, and the like. The housing 120 will be described with reference to other drawings.

2 is a left side view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 2 , the left side on which the thickness of the helipad 100 is displayed is depicted along with the ZY coordinate side. Specifically, the platform 111 including both wings, the housing 120 , the base 121 , the lift 142 , the first shaft 151 , and the second shaft 152 including the helipad 100 includes the is described.

In order to help systematic understanding, the housing 120 , the platform 111 , the lift 142 , and the first shaft 151 and the second shaft 152 will be described in order.

The thickness of the housing 120 is depicted. The housing 120 has a platform 111 as an upper plate, and has a thickness necessary to accommodate a platform support structure including two side plates connected thereto and a lower connecting rod connecting the two side plates to each other therein. The platform support structure is a structure for preventing distortion of the platform 111 .

When the front lift 141 and the rear lift 142 are in the down position to a certain level, and the platform 111 is parallel to the base 121, the platform 111 is, together with the lifts 141 and 142, the housing ( 120) can be stored inside.

Among the four side walls of the housing 120 , the shapes of the left and right walls are symmetric to each other, but the front and rear walls are preferably designed differently. Since the front side wall is located at the front part of the vehicle roof and the rear side wall is located at the rear part of the vehicle roof, it is preferable that the front side wall is formed at an angle to reduce air resistance.

The inclination of the platform 111 may be adjusted using at least one or more inclination adjusting means, for example, a lift. The rear lift 142 is depicted in FIG. 2 and the front lift 141 is hidden inside the housing. Through the up/down operations of the front lift 141 and the rear lift 142 , the inclination of the front/rear direction of the platform 111 may be adjusted due to a relative height difference.

The first shaft 151 connects the front lift 141 (not shown) and the platform 111 to rotate in the front position. And the second shaft 152 is connected to rotate the rear lift 142 and the platform 111 in the rear position. The reason for the existence of the first shaft 151 and the second shaft 152 is to naturally incline the platform 111 according to a height difference between the front lift 141 and the rear lift 142 . If there is no rotation shaft, when there is a difference in height between the front lift 141 and the rear lift 142 , the platform 111 does not tilt. In order to induce a natural inclination of the platform 111 , one more necessary condition is the movement of the first axis 151 and the second axis 152 . The movement of the rotating shaft will be described later.

3 is a right side view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 3 , since the depicted right side view of the helipad 100 is difficult to lead beyond the description of the left side view of FIG. 2 , the description of the left side view is substituted for this.

4 is a plan view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 4 , the rear position of the helipad 100 is depicted together with the ZX coordinate side. Specifically, the components of the helipad 100, the platform 111 including both wings 112 and 113, the housing 120, the rear lift 142, the inclination sensor 160, the left actuator 132 and A light actuator 133 is depicted.

Both wings 112 and 113 are in an unfolded state, and are connected to the platform 111 through a coupler such as a hinge.

Since the rear lift 142 is at a higher position than the front lift 141 , the back surfaces of the platform 111 and wings 112 and 113 are depicted.

The inclination sensor 160 is attached to the rear surface of the platform 111 to measure the inclination in the X-axis direction and the inclination in the Y-axis direction of the platform 111 .

The left actuator 132 executes folding/unfolding driving of the left wing 112 . The light actuator 133 performs folding/unfolding driving of the light wing 113 . The actuators 132 and 133 may include a motor as a power source. A vehicle battery may be used as a power source for the motor.

5 is a bottom view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 5 , the front position of the helipad 100 is depicted together with the ZX coordinate side. Specifically, the components of the helipad 100, the platform 111 including both wings 112 and 113, the housing 120, the left actuator 132 and the light actuator 133 are depicted.

Since it is difficult to lead beyond the description of the plan view of FIG. 4 , the bottom view of the depicted helipad 100 is replaced with a description of the plan view.

6 is a rear view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 6 , the rear surface of the helipad 100 is depicted together with the ZX coordinate side. Specifically, the components of the helipad 100, the platform 111 including both wings 112 and 113, the housing 120, the left actuator 132, the light actuator 133, the front lift 141, A rear lift 142 and tilt sensor 160 are depicted.

7 is a perspective view of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 7 , the platform 111 is depicted with the rear lift 142 in a higher position than the front lift 141 , so that the front is inclined lower than the rear. A left actuator 132 driving the folding/unfolding of the left wing 112 and a light actuator 133 driving the folding/unfolding of the right wing 113 are depicted. The platform 111 connecting the left wing 112 and the right wing 113 is installed on the roof of the vehicle on the sloped terrain and is in equilibrium with the sea level, so it can induce the vertical take-off and landing of the drone. .

8 is an exemplary view of a tilt sensor according to an embodiment of the present invention.

Referring to FIG. 8 , the inclination sensor 160 installed on the baemyeong of the platform 110 is depicted. The inclination sensor 160 may be implemented as a gyro sensor or an acceleration sensor. The inclination sensor 160 functions to convert the inclination with respect to the gravitational direction in the X-axis and Y-axis directions into an electrical value and output the converted value. In the present invention, the inclination in the X-axis direction and the inclination in the Y-axis direction can be adjusted using two lifts and a shock absorber of a vehicle.

9 is a block diagram of a controller for controlling a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 9 , the helipad 100 according to an embodiment of the present invention may be configured to include a controller 190 for controlling each component. The controller 190 is communicatively connected to each component by wire, and a remote controller may be additionally provided for the controller.

The controller 190 may control folding/unfolding driving of the left wing 112 and the right wing 113 through motor control of the left actuator 132 and the right actuator 133 . The controller 190 may control the driving of at least one of the front lift 141 and the rear lift 142 to adjust the longitudinal inclination of the helipad 100 based on the value sensed by the inclination sensor 160 . .

A user may input a control command using the input unit 170 , and may check a control process, an error message, an output message, and the like, through the status display unit 180 .

In the helipad 100 according to an embodiment of the present invention, the platform 111 may interfere with the base 121 or the housing 120 depending on the degree of inclination formed by the platform 111 . Interference between components may cause damage to components, so this should be prevented in advance. Accordingly, when the inclination value in either direction reaches a threshold value, the controller 190 may be configured to output an alarm of caution to the user. That is, the controller 190 may notify that the slope measurement value has reached the threshold value through at least one alarm means among a visual alarm through the status display unit 180 and an audible alarm through a speaker.

In addition, in order to prevent damage to components constituting the helipad 100 and to prevent interference between components in advance, the controller 190 controls the first lift within the maximum height difference range between the first lift and the second lift. It may be configured to control the up/down of the lift and the second lift. That is, when the platform 111 reaches the limit inclination, when any one of the lifts 141 and 142 reaches the critical height, or when the critical height difference between the lifts occurs, the corresponding components do not proceed any further and It can be configured to stop.

10 is an exemplary diagram for explaining a lift operation of a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 10 , a state in which the platform 111 is connected to the front lift 141 and the rear lift 142, which are inclination adjustment means, through a first shaft 151 and a second shaft 152, respectively, is depicted. . Among various lift methods, a scissor lift may be used as shown in FIG. 10 . The process depicted in 10 composed of the upper road and the lower road is a process in which the front lift 141 is down. Initially, in a state where the platform 111 is horizontal by the front lift 141 and the rear lift 142, the rear lift 142 is fixed, and only the front lift 141 is adjusted down. As the front lift 141 descends, the distance between the first shaft 151 and the second shaft 152 inevitably increases, and the first shaft 151 moves within the first shaft housing 153 in proportion to the increased length. It moves from the inside to the outside. Therefore, the distance between the axes of the lifts 141 and 142 is adjusted while maintaining the vertical position, and the platform 111 naturally forms an inclination. In this case, the front lift 141 and the rear lift 142 maintain verticality.

The first shaft housing 153 corresponds to a housing surrounding the first shaft 151 . The first shaft housing 153 may be configured to include a first rail. The first shaft 151 is movable along the first rail.

The second shaft housing 154 corresponds to a housing surrounding the second shaft 152 . The second chukwoojik 154 may be configured to include a second rail. The second shaft 152 is movable along the second rail.

11 is an exemplary view of a vehicle roof equipped with a helipad for a drone according to an embodiment of the present invention.

Referring to FIG. 11 , the helipad 100 according to an embodiment of the present invention may be installed on a roof of a vehicle or a loading box of a truck. The direction in which the helipad 100 is installed is a direction in which the front of the helipad 100 coincides with the front of the vehicle. By controlling at least one of the front lift 141 and the rear lift 142 of the helipad 100 in a state in which the vehicle is parked in the longitudinal direction of the mountainous terrain, the vertical direction is maintained horizontally, and the horizontal The level can be guided through the vehicle's pickup shock control.

As described above, according to an embodiment of the present invention, according to the present invention, it is possible to stably operate a drone in a mine or a construction site in a mountainous terrain with many slopes.

In addition, it is possible to horizontally control the helipad where the drone takes off and land.

In the above, although several preferred embodiments of the present invention have been described with some examples, the descriptions of various various embodiments described in the "Specific Contents for Carrying Out the Invention" item are merely exemplary, and the present invention Those of ordinary skill in the art will understand well that the present invention can be practiced with various modifications or equivalents to the present invention from the above description.

In addition, since the present invention can be implemented in various other forms, the present invention is not limited by the above description, and the above description is intended to complete the disclosure of the present invention, and is generally It should be understood that this is only provided to fully inform those with knowledge of the scope of the present invention, and that the present invention is only defined by each of the claims.

100: helipad
111: platform
112: left wing
113: light wing
120: housing
121: base
132: left actuator
133: light actuator
141: front lift
142: rear lift
151: first axis
152: second axis
153: first congratulations
154: second congratulations
160: tilt sensor
200: vehicle
210: loop
132: left actuator
133: light actuator
141: front lift
142: rear lift
160: tilt sensor
170: controller
180: status display unit

Claims (15)

a platform for guiding the horizontal take-off and landing of the drone;
a tilt sensor for measuring the tilt of the platform; and
It is configured to include a controller (controller) for controlling the operation of the inclination adjustment means to make the platform horizontal by using the sensing data of the inclination sensor,
helipad.
The method of claim 1,
configured to further include a left wing and a right wing that extend the width of the platform,
helipad.
The method of claim 1,
Expanding the width of the platform, further comprising a left wing (left wing) and a right wing (right wing),
The controller is
configured to control an actuator that drives the folding/unfolding of the left wing and right wing,
helipad.
The method of claim 1,
configured to further include a base connected to the vehicle so that the helipad is installed on the roof or loading box of the vehicle,
helipad.
The method of claim 1,
configured to further include a housing in which the helipad installed on the roof or loading box of the vehicle is accommodated,
helipad.
The method of claim 1,
The tilt adjustment means,
configured to include a lift that adjusts at least one of the inclination of the platform in the X-axis direction and the inclination in the Y-axis direction,
helipad.
The method of claim 1,
The tilt adjustment means,
A lift for adjusting any one of the inclination in the X-axis direction and the inclination in the Y-axis direction of the platform,
The other slope is characterized in that it is adjusted through a shock absorber of the vehicle,
helipad.
The method of claim 1,
The tilt adjustment means,
It includes a lift that adjusts the slope of any one of the inclination in the X-axis direction and the inclination in the Y-axis direction of the platform with a large width of change,
Another inclination with a small width of change among the inclinations is characterized in that it is controlled through a shock absorber of the vehicle,
helipad. 9. The method according to any one of claims 6 to 8,
The lift is
a first lift installed on one side of the platform; and
and a second lift installed on the other side of the platform,
The platform is connected through the first lift and a first shaft, and is connected through the second lift and a second shaft,
configured to adjust the inclination of the main platform according to the rotation angle between the platform and the lift in the first axis and the second axis according to the height control of the first lift and the second lift,
helipad.
10. The method of claim 9,
The lift is
The first axis and the second axis are configured to be movable to enable vertical up/down of the lift,
helipad.
10. The method of claim 9,
The first axis or the second axis is,
characterized in that it is configured to move parallel to the platform in proportion to the length change of the first lift or the second lift,
helipad.
10. The method of claim 9,
The controller is
Controlling the up/down of the first lift and the second lift within the range of the maximum difference in height between the first lift and the second lift, wherein no interference occurs on the platform,
helipad.
11. The method of claim 10,
a first shaft housing for guiding the movement of the first shaft; and
Further comprising a second shaft housing for guiding the movement of the second shaft,
The controller is
characterized in that the first shaft or the second shaft controls up/down of the first lift or the second lift in a movable range within each shaft housing,
helipad.
10. The method of claim 9,
The first shaft housing includes a first rail, the second shaft housing includes a second rail,
the first axis moves along the first rail;
The second axis is characterized in that it moves along the second rail,
helipad.
The method of claim 1,
The controller is
Characterized in that according to the operation of the inclination adjustment means, outputting a warning alarm when the inclination measurement value in the X-axis or Y-axis direction by the inclination sensor corresponds to a threshold value,
helipad.

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