KR20130070306A - Vertical expandable apparatus and unmanned supervision system having the same - Google Patents

Abstract

PURPOSE: A perpendicular expansion device and an unmanned monitoring system including the same are provided to be expanded by relative motion of a screw, thereby overcoming structural restriction of a cable. CONSTITUTION: Screw units(240,250) are arranged in a hollow of a rotation shaft and surround a cable. The screw units are upwardly and downwardly moved with a first screw unit of the rotation shaft corresponding to rotation of the rotation shaft. Transfer units(200,210,220) surround the rotation shaft. An external device, which is connected to the cable, is fixed to a transfer unit. The transfer unit transfers the external device by using upward or downward motion which is generated by connection with the screw units.

Description

Vertical Expander and Unmanned Surveillance System Including It {VERTICAL EXPANDABLE APPARATUS AND UNMANNED SUPERVISION SYSTEM HAVING THE SAME}

The present invention relates to a vertical expansion device capable of position control in the vertical direction.

A vertical expansion device such as a telescoping mast is a device for mounting an application device such as a transmitting / receiving antenna of a broadcast relay vehicle, a photographing camera or an observation equipment, and raising or lowering it freely.

In general, a tube having a cylindrical tube overlapping with each other to operate in relation to each other is built in the drive device using the elasticity of the pneumatic cylinder, hydraulic cylinder, rack gear or coil spring to expand the tube to be raised or contracted by By lowering, the uppermost mounted application device is lifted.

Conventional pneumatic or hydraulic cylinder drive vertical expansion device is expensive to manufacture, heavy product load, frequent failure in the seal packing part of the mast drive unit, coil spring drive vertical expansion device is gear and spring assembly Due to the complicated structure, it is difficult to manufacture, and at the same time, it frequently maintains and shorten its lifespan.

On the other hand, the vertical expansion device is used to support the unmanned market value mounted on the unmanned vehicles used for military or police. However, the vertical expansion device supporting the unmanned market value due to the characteristics of the unmanned vehicle should have a low weight and position control, that is, the position of the unmanned surveillance device in the vertical direction accurately and quickly.

However, the conventional vertical expansion device of the pneumatic or hydraulic cylinder driving method or the coil spring driving method is large in weight, difficult to achieve accurate, fast and accurate position control, and there is a problem that the cable is exposed to the outside and is not protected. In addition, the conventional vertical expansion device using the spring spring operating device does not overcome the frictional force of the fixed tube-extension tube-moving tube when operating in inclined areas and poor conditions where a lot of dust occurs a problem that the vertical expansion device is not driven There is this.

In view of the above, the technical problem of the present invention is to provide a vertical expansion device with improved durability.

In order to achieve the above object of the present invention, the vertical expansion device according to the embodiment of the present invention includes a cable drum housing, a lifting unit, a screw unit and a transfer unit. The cable drum housing houses a power and signal supply cable. The lifting unit is installed in the cable drum housing, and includes a rotating shaft that rotates in one direction. The transfer unit is installed in the cable drum housing, is formed to surround the screw unit and connected to one end of the cable, in conjunction with the screw unit to raise or lower the cable.

As an embodiment related to the present invention, the screw unit is installed on the rotating shaft and interlocked with the rotating shaft and is disposed inside the screw inner mast, the screw inner mast and the inner screw is formed to interlock with the screw inner mast It is disposed inside the assembly interlocked with the heavy assembly, and comprises an upper assembly connected to the transfer unit.

In one embodiment related to the present invention, the screw inner mast, the heavy assembly and the phase assembly is formed in a cylindrical structure including a through hole. The screw inner mast includes a first threaded portion formed along an inner circumference at an upper end thereof, and the heavy assembly is formed along an inner circumference at an upper end of the heavy assembly and a second threaded portion formed along an outer circumference and engaged with the first threaded portion. And a third threaded portion. When the screw inner mast is rotated, the heavy assembly is raised or lowered due to the relative movement of the first screw portion and the second screw portion.

In one embodiment related to the present invention, the upper assembly includes a fourth threaded portion formed along an outer circumference and engaged with the third threaded portion. The upper assembly is raised or lowered due to the relative movement of the third and fourth threads by the rotation of the heavy assembly.

In one embodiment related to the present invention, the upper end of the upper assembly includes a coupling member including a protrusion protruding along an outer circumference. The protrusion is connected to the transfer unit to raise or lower the transfer unit.

In one embodiment related to the present invention, the transfer unit is a fixed tube which is fixed to the lifting unit to form the appearance of the transfer unit, an extension tube formed in the interior of the fixed tube, the cylindrical structure including a through hole And a movable tube formed inside the extension tube and having a cylindrical structure including a through hole and coupled to the screw unit to interlock with the screw unit.

In one embodiment related to the present invention, the movable tube includes a through hole formed to protrude the cable on the upper portion of the movable tube. It includes a flange formed so that the application device connected to the cable is installed on the upper portion of the movable tube.

In one embodiment related to the present invention, the movable tube has a stopper protruding from the movable tube at a lower portion thereof, and the extension tube includes a flange formed to be coupled to the stopper at an upper portion thereof. When the movable tube is lifted and lowered, the stopper and the flange are coupled to the extension tube.

As an embodiment related to the present invention, upper and lower limit sensors are installed at the upper end of the fixed tube, respectively, and upper and lower limit are respectively detected at the lower and upper ends of the movable tube and the lower and upper ends of the extension tube. The device is installed.

In one embodiment related to the present invention, the elevating unit includes a gear formed to be rotatable by a rotating motor, a worm gear that rotates in combination with the gear and rotates in a rotational direction, and the rotating shaft is interlocked with the worm gear.

In one embodiment of the present invention, the rotary motor is capable of forward and reverse rotation to rotate the rotary shafts in opposite directions to lift or lower the transfer unit.

In order to achieve the above object of the present invention, the unmanned monitoring system according to another embodiment of the present invention is a cable drum housing for receiving the power and signal supply cable, the rotary shaft is installed in the cable drum housing, rotates in one direction A lifting unit including a screw unit, which is interlocked with the rotary shaft and has a plurality of threads coupled to each other, and which is formed to ascend or descend by a relative movement of the screw, and installed in the cable drum housing and surrounding the screw unit. And a transfer unit connected to one end of the cable and interlocked with the screw unit to raise or lower the cable, the camera being mounted on the lifting unit and connected to the cable.

According to the present invention having the configuration described above, since the extension by the relative movement of the screw, there is no structural limitation of the cable is light weight and simple internal structure.

In addition, including a transfer unit and a screw unit extending in multiple stages, the driving is stable. Therefore, it can be driven stably even in places with a lot of pollutants and sloped.

1 is a perspective view showing the appearance of a vertical expansion device according to an embodiment of the present invention.
2 is a vertical sectional view showing a vertical expansion device according to the present invention.
3 is a partially enlarged perspective view of the vertical expansion device.
Figure 4 is a perspective view showing in detail the lifting unit.
5 is a cut perspective view of the fixing tube;
6 is a cutaway perspective view of the extension tube;
7 is a cutaway perspective view of the movable tube;
Fig. 8 is a cut perspective view showing the screw inner mast.
9 is a cut perspective view of the heavy assembly;
10 is a cutaway perspective view of the phase assembly;
11a to 11c is a conceptual diagram of the driving of the unmanned surveillance system including a vertical expansion device.

Hereinafter, a vertical expansion apparatus and an unmanned monitoring system including the same according to the present invention will be described in more detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

1 shows the appearance of a vertical expansion device according to an embodiment of the present invention.

Referring to FIG. 1, the vertical expansion device of the present invention includes a cable drum housing 100, a lifting unit 120 and 130, a control unit 110, and a transfer unit. The transfer unit includes a fixed tube 200, an extension tube 210, and a movable tube 220. The vertical expansion device may further include a rotatable inner screw mast 230 and a screw unit, wherein the screw unit includes a heavy assembly 240 and an upper assembly 250.

The Gi cable drum housing 100 houses a cable 225 (see FIGS. 2 and 3). The lifting units 120 and 130 are installed on the cable drum housing 100 to raise or lower the cable 225. The control unit 110 controls the driving of the lifting unit (120, 130).

The fixed tube 200 is fixed on the lifting unit 130, and the extension tube 210 is slidably fitted inside the fixed tube 200. The movable tube 220 is slidably fitted into the extension tube 210, the end of the spring rope 102 is fixed to one end, and the cable 225 extends through the inside to be fixed at the other end.

Here, the cable 225 has a flexible enough to be accommodated in the form of a barrel in the cable drum housing 100.

On the top of the movable tube 220, an application device (not shown), for example, a transmission and reception antenna, a photographing camera or an unmanned monitoring device, or the like is detachably installed, and the movable tube 220 is a lifting unit under control of the control unit 110 ( In accordance with the operation of the 120,130 is raised or lowered by the spring rope 102, the extension tube 210 is elevated in relation to the movable tube 220.

Here, the extension tube 210 refers to a tube for extending the extension length of the vertical expansion device, at least one may be installed. In addition, the term "in relation to" refers to performing an operation together by connecting or combining by any means.

When the screw unit is raised, the movable tube 220 and the extension tube 210 are raised, and the cable 225 stored in the cable drum housing 1400 in the shape of a screw connected to the movable tube 220. ) Is pulled up.

Hereinafter, the configuration of the vertical expansion device will be specifically discussed.

2 is a vertical sectional view showing a vertical expansion device according to the present invention. 3 is a partially enlarged perspective view of the vertical expansion device.

2 and 3, the cable drum housing 100 is, for example, a hermetically sealed container in which a connector 101 is formed at one side and a discharge hole 104 is formed at an upper center thereof. As shown in FIG. 1, the cable 225 is exposed from the connector 101 of the housing 100 and connected to the control unit 110.

One end of the spring rope 102 is fixed to the connector 101 and is laminated in the shape of a cable inside the cable drum housing 100 so that the other end is discharged through the discharge hole 104, and the other end thereof is movable by the bracket 222. It is fixed to the tube 220. At this time, the guide tube 138 is formed on the outside of the discharge hole 104, the spring rope 102 is discharged through the inside of the guide tube 138, which will be described later.

The spring rope 102, as described above, is fixed to the bracket 222 installed in the form of a plug on the lower end of the movable tube 220, and the function to lift the movable tube 220 in accordance with the lifting and lowering of the spring rope 102; In addition, a power supply and a signal line (not shown) extending from the control unit 110 therein serve as a part of a path that is connected to an application device installed on the upper portion of the movable tube 220.

Figure 4 is a perspective view showing in detail the lifting unit (120, 130).

Referring to Figure 4, the gear box 121 is coupled to the motor shaft of the rotary motor 120, the lifting unit 130 is installed on the gear box 121. For example, the rotary motor 120 may be formed of a brushless direct current (BLDC) motor capable of forward and reverse rotation. The gear box 121 converts the rotational force of the rotary motor 120 and transmits the screw to the screw inner mast 230, the heavy assembly 240, and the upper assembly 250.

The rotating shaft 134 is formed in the elevating unit 130, the discharge hole 104 is formed. The discharge hole 104 may be connected to the guide tube 138 so that the cable 225 may extend into the upper assembly 250. That is, the rotary shaft 134 is rotated by the lifting unit 130 and the cable 225 is to be moved up accordingly.

A gear 131, a worm gear 132, and a lifting gear 133 are provided inside the lifting unit 130. The gear 131 is rotated by the gear box 121. The worm gear 132 is combined with the gear 131 to convert the rotation direction of the gear 131. The worm gear 132 is rotated in combination with the rotation shaft 134.

The screw inner mast 230 is fixed to the rotation shaft 134. That is, when the rotating shaft 134 rotates, the screw inner mast 230 also rotates in the same direction.

5 is a cutaway perspective view of the fixing tube.

2, 3 and 5, the fixing tube 200 is fixed to the lower end is installed on the gear box 130. A support ring 201 is fitted along the bottom inner side of the fixed tube 200. In addition, a ring-shaped flange 203 is fitted to the upper end of the fixing tube 200. The upper surface of the fixed tube 200 is installed to protrude slightly from the inside of the fixed tube 200. The inside of the flange 203 is provided with a rubber packing 205 for sealing in contact with the surface of the extension tube 210 and a packing support ring 204 for fixing and supporting the rubber packing 205.

A plurality of guide grooves 208 are formed at regular intervals along the inner surface of the flange 203, the rubber packing 205, and the packing support ring 204. This serves to guide the guide rail of the extension tube 210 to be described later to slide.

In addition, a first detection sensor 206 and a second detection sensor 207 are installed on one side of the flange 203 surface. The first detection sensor 206 is paired with the first sensing element 227 (see FIGS. 2 and 8) installed on the rear surface of the flange 223 of the movable tube 220 of the extension tube 210. Detect the lower limit. The second detection sensor 207 is paired with a second sensing element 217 (see FIG. 7) installed at a lower end of the extension tube 210 to detect an upper limit of the extension tube 210.

Preferably, as the sensing sensors 206 and 207, a proximity sensor including a high frequency oscillation type, a capacitive type, or a magnetic lead type may be applied. In an exemplary embodiment of the present invention, a magnetic lead type is used as an example, and the first and second sensing sensors 206 and 207 may be conductor elements, and the first and second sensing elements 217 and 227 may be magnet elements. Can be.

In order to protect the conductive wires connected to the first and second detection sensors 206 and 207, a flat tube 202 may be installed in a height direction on an outer surface of the fixing tube 200.

6 is a cutaway perspective view of the extension tube;

2, 3 and 6, the extension tube 210 is fitted inside the fixing tube 200. Whether or not to apply the extension tube 210 is optional.

The extension tube 210 has a structure substantially similar to that of the fixed tube 200, and a support ring 211 is installed inside the lower end. The fixed tube 200 may protrude outward so that the support ring 211 may be disposed on the support ring 201 of the fixed tube 200.

A plurality of guide rails 219 extending vertically over the entire height direction are provided on the outer surface of the extension tube 210. As described above, the guide rail 219 prevents the extension tube 210 from being rotated at the time of lifting and lowering while being fitted in the guide groove 208 formed in the flange 203 of the fixed tube 200. It serves as a guide.

The upper end of the ring-shaped flange 213 is fitted, it is installed so as to protrude slightly than the inner side of the extension tube 210. Inside the flange 213, a rubber packing 215 for contacting and sealing the surface of the movable tube 220 therein and a packing support ring 214 for fixing the rubber packing 215 are installed.

In addition, as described above, a plurality of guide grooves 218 are formed at regular intervals along the inner surface of the flange 213, the rubber packing 215, and the entire packing support ring 214, which is a movable tube to be described later The guide rail of 220 serves to guide the slide.

On the other hand, as described above, when the sensing element 217 is installed on the outer surface near the lower end and the extension tube 210 reaches the upper limit during the rising, the sensing object approaching the sensing sensor 207 of the fixed tube 200 is approached. Device 217 is sensed to indicate that an upper limit has been reached.

7 is a cutaway perspective view of the movable tube;

2, 3 and 7, the movable tube 220 is fitted inside the extension tube 210. As described above, a support ring 221 is installed inside the lower end of the movable tube 220, and the support ring 221 slightly protrudes outward so as to rest on the support ring 211 of the extension tube 210. In addition, a bracket 222 having a through hole is installed at the center of the support ring 221 so that the end of the spring rope 102 is fitted into the bracket 222 to be fixed.

The outer side surface of the movable tube 220 is provided with a plurality of guide rails 228 extending vertically throughout the height direction. As described above, the guide rail 228 prevents the movable tube 220 from being rotated at the time of lifting and lowering while being fitted in the guide groove 218 formed in the flange 213 of the extension tube 210. It serves as a guide.

In addition, the stopper 229 protrudes along the circumferential direction between the guide rails 228 adjacent to the lower end of the outer surface of the movable tube 220. According to this configuration, the stopper 229 guides the flange 213 while the guide rail 228 is guided and slides by the guide groove 218 of the extension tube 210 when the movable tube 220 is raised. The portion between the grooves 218 is caught and thus the extension tube 210 is pulled up by the movable tube 220.

The upper end of the movable tube 220 is fitted with a disk-shaped flange 223 having a through hole in the center, the rear side is installed with a cable fixing bracket 224 for fixing the cable 225 accommodated in the movable tube 220 do. An end of the cable 225 fixed to the cable fixing bracket 224 is coupled to the connector 226 for connection with the application. The cable 225 extends through the rope 102 from the other end of the movable tube 220 and the rope 102 and is discharged through the connector 101 of the cable drum housing 100 to control the unit 110. Extend to (see FIG. 1).

Meanwhile, a first sensing element 227 is installed at an edge of the rear surface of the flange 223, and as described above, the first detection sensor 206 of the penis fixing tube 200 detects this and the movable tube. Notify that 220 has reached the lower limit.

The upper portion of the flange 223 may be equipped with a variety of applications, such as a transmission and reception antenna, a photographing camera or observation equipment.

Fig. 8 is a cut perspective view showing the screw inner mast.

2, 3 and 8, the screw inner mast 230 is formed to move the extension tube 210 and the movable tube 220 in the vertical direction. The screw inner mast 230 includes a through hole and has a cylindrical structure extending in a first direction. The screw inner mast 230 includes a coupling member 231 and a first threaded portion 232.

The coupling member 231 is formed at a lower end of the screw inner mast 230, and the coupling member 231 is fixed to the rotation shaft 134. Therefore, when the rotating shaft 134 rotates, the screw inner mast 230 also rotates.

 The first threaded portion 232 is formed along the inner circumference of the upper end of the screw inner mast 230. The first screw part 232 is assembled with the heavy assembly 240 to rotate the heavy assembly 240.

9 is a cutaway perspective view of the heavy assembly.

2, 3 and 9, the heavy assembly 240 is moved up and down by the screw inner mast 230, it is formed to move the upper assembly 250 in the vertical direction. The heavy assembly 240 is disposed in the through hole of the screw inner mast 230.

The heavy assembly 240 includes a through hole and is formed in a cylindrical structure extending in the first direction. The heavy assembly 240 includes a second threaded portion 241, a third threaded portion 242, and a first stopper 243.

The third screw portion 242 is formed along the inner circumference of the upper end of the heavy assembly 240. The first stopper 243 is formed along the outer circumference of the lower end of the heavy assembly 240. The second screw portion 241 is formed along the outer circumference of the heavy assembly 240 and is partially formed so as not to overlap the third screw portion 242 and the first stopper 243. The second threaded portion 241 may be formed of a 4-wire screw.

The second threaded portion 241 is coupled to the first threaded portion 232. That is, when the screw inner mast 230 rotates, the heavy assembly 240 moves up due to the relative movement of the first screw portion 232 and the second screw portion 241. (Move to movement)

The heavy assembly 240 ascends and gradually protrudes out of the screw inner mast 230. When the stopper 243 is in contact with the lower end of the first screw portion 242, the upward movement is stopped. That is, the first stopper 243 sets the highest rise point so that the heavy assembly 240 is not separated from the screw inner mast 230. However, the heavy assembly 240 rotates by the rotation of the screw inner mast 230 and rotates the upper assembly 250.

10 is a cutaway perspective view of the phase assembly.

2, 3 and 10, the upper assembly 250 is moved in the vertical direction by the rotational movement of the heavy assembly 240. The upper assembly 250 is disposed in the through hole of the heavy assembly 240.

The upper assembly 250 includes a through hole formed to penetrate the cable 225 and is formed in a cylindrical structure extending in the first direction. The upper assembly 250 includes a fourth threaded portion 251, a second stopper 253, and a coupling member 252.

The second stopper 253 is formed along the outer periphery of the lower end of the upper assembly 250. The fourth screw portion 251 is formed along the outer circumference of the upper assembly 250, which may be formed of a 4-wire screw. However, the second stopper 253 and the coupling member 252 are formed so as not to overlap.

The fourth threaded portion 251 is coupled to the third threaded portion 242. That is, when the heavy assembly 240 stops the lifting movement and rotates, the upper assembly 250 moves up and down due to the relative movement of the third and fourth threads 242 and 251.

The coupling member 252 is formed at the upper end of the upper assembly 250. The coupling member 252 includes a protrusion 252 ′ protruding along the outer circumference of the coupling member 252. The protrusion 252 ′ is formed to be fixed to the movable tube 220. That is, the movable tube 220 is interlocked by the movement of the upper assembly 250.

The upper assembly 250 moves upward to gradually protrude to the outside of the heavy assembly 240. When the stopper 253 is in contact with the lower end of the third screw portion 242, the upward movement is stopped. That is, the stopper 253 sets the highest point so that the upper assembly 250 is not separated from the heavy assembly 240.

Vertical expansion device according to an embodiment of the present invention because the plurality of structures in a multi-stage movement by the combination of gears and a plurality of screw parts, the structure is simple and can be manufactured at low cost, and the weight is light. In addition, the driving force is improved, which is advantageous for the operation in the inclined area and a lot of pollutants.

The operation of an unmanned surveillance system equipped with an unmanned camera in a vertical expansion device having such a structure will be described.

11A to 11C are conceptual diagrams of driving of the unmanned surveillance system including the vertical expansion device.

2 and 11A to 11C, a camera 10 connected to the cable 225 is installed on the movable tube 220 of the vertical expansion device. The camera 10 may use an unmanned surveillance camera formed to be driven even if a person does not operate. When the camera 10 is to be extended upward, when the power is applied to the rotation motor 120 to forward rotation, the rotational force of the rotation motor 120 is the gear 131 in the gearbox 130-a worm gear ( 132 is rotated. The rotation shaft 134 rotates by the rotation of the worm gear 134.

When the rotating shaft 134 rotates, the inner screw mast 230 installed on the upper portion of the rotating shaft 134 rotates. The second screw portion 241 of the heavy assembly 240 coupled with the first screw portion 232 formed on the upper portion of the inner screw mast 230 has a relative movement. That is, the heavy assembly 240 is moved up and down. When the first stopper 243 is in contact with the lower portion of the first threaded portion 232, the lifting motion of the heavy assembly 240 is stopped, and the heavy assembly 240 is together with the inner screw mast 230. It will rotate.

When the heavy assembly 240 rotates, the fourth screw portion 251 of the upper assembly 250 coupled to the third screw portion 242 of the heavy assembly 240 is relatively moved. That is, the upper assembly 250 is moved up and down. The lifting motion of the upper assembly 250 is driven until the second stopper 253 is in contact with the lower end of the third threaded portion 242.

As discussed above, the phase assembly 250 is coupled to the movable tube 220. Therefore, when the heavy assembly 240 moves up and down, the movable tube 220 moves up and down, and the cable 225 having one end fixed to the movable tube 220 is raised.

The lower end of the movable tube 220 reaches the upper end of the extension tube 210, the extension tube 210 is moved up and down. The second detection sensor 207 detects the second sensing element 217 to inform the control unit 110 that the extension tube 210 has approached the upper limit. The control unit 110 stops the rotation of the rotary motor 120.

When the camera 10 is to be transferred downward, the rotating shaft 120 is rotated in reverse to allow the rotating shaft 134 to rotate. The screw inner mast 230, the heavy assembly 240 and the upper assembly 250 by the rotating shaft 134 rotates and moves downward. When the upper assembly 250 is lowered, the extension tube 210 and the movable tube 220 is lowered.

When the extension tube 210 reaches the lower limit, the first detection sensor 206 of the fixed tube 200 detects the first sensing element 227 of the movable tube 220 and controls the control unit 110. Inform). The control unit 110 stops the rotation of the rotary motor 120.

Therefore, by installing the camera 10 in the vertical expansion device to adjust the position by a desired height, it is formed in the multi-stage inside of the vertical expansion device, to stably transfer the camera 10 even in inclined places Can be.

The vertical expansion device described above and the unmanned surveillance system including the same may not be limitedly applied to the configuration and method of the embodiments described above, but the embodiments may be modified in all or all of the embodiments so that various modifications may be made. Some may be optionally combined.

Claims (12)

A cable drum housing accommodating a power and signal supply cable;
A rotating shaft installed in the cable drum housing and including a hollow formed to allow the cable to pass therethrough, and having a first threaded portion formed on an inner surface thereof;
A screw unit disposed in the hollow of the rotary shaft and formed to surround the cable, and having a second screw portion coupled to the first screw portion on an outer surface thereof to move up or down with the first screw portion according to the rotation of the rotary shaft;
A vertical expansion device, characterized in that it is formed to surround the rotating shaft, the external device is connected to the cable is fixed, and is connected to the screw unit to move the external device by lifting or lowering movement. The method of claim 1, wherein the screw unit,
A heavy assembly disposed in the hollow of the rotating shaft, having a second threaded portion formed on an outer surface thereof, and a third threaded portion formed on an inner surface thereof; And
And a fourth screw portion formed on an inner surface of the heavy assembly and engaging with the third screw portion, wherein the third screw portion includes an upper assembly rotating and lifting or lowering. The vertical expansion apparatus of claim 2, wherein the heavy assembly rises by the length of the second screw portion and the upper assembly rises by the length of the fourth screw portion. The method of claim 3,
The first screw portion is formed on the upper end of the rotating shaft, the third screw portion is formed on the upper end of the heavy assembly,
The heavy assembly includes a first stopper formed at a lower end of the heavy assembly and hooked to the first threaded portion to block the rise of the heavy assembly.
The upper assembly includes a second stopper is formed on the lower end of the upper assembly and is caught by the third screw portion to block the rise of the upper assembly. The method of claim 2,
The upper end of the upper assembly includes a coupling member including a protrusion protruding along the outer periphery,
The protrusion is connected to the transfer unit vertical expansion device, characterized in that for lifting or lowering the transfer unit. The method of claim 1, wherein the transfer unit,
A fixed tube fixed to the elevating unit to form an appearance of the transfer unit;
An extension tube formed inside the fixed tube and formed into a cylindrical structure including a through hole; And
And a movable tube which is formed inside the extension tube and has a cylindrical structure including a through hole and is coupled to the screw unit and interlocks with the screw unit. The method of claim 6, wherein the movable tube,
It includes a through-hole formed to protrude the cable on the upper portion of the movable tube,
And a flange formed so that an application device connected to the cable can be installed on the upper portion of the movable tube. The method according to claim 6,
The movable tube has a stopper protruding from the movable tube at a lower portion thereof,
The extension tube includes a flange formed to be coupled to the stopper at the top,
And when the movable tube moves up and down, the stopper and the flange are coupled to each other so that the extension tube moves up and down. The method according to claim 6,
Upper and lower limit sensors are installed at the top of the fixed tube, respectively.
In response thereto, the upper and lower limit sensing elements are installed at the lower and upper ends of the movable tube and the lower and upper ends of the extension tube, respectively. The method of claim 1,
The elevating unit includes a gear formed to be rotatable by a rotating motor, and a worm gear coupled to the gear to rotate the rotation direction.
The rotating shaft is a vertical expansion device, characterized in that the interlock with the worm gear. The method of claim 10,
The rotary motor is a vertical expansion device, characterized in that the rotation motor is capable of forward and reverse rotation to rotate the rotating shaft in a direction opposite to each other to raise or lower the transfer unit. Vertical expansion device according to any one of claims 1 to 11; And
Unmanned surveillance system including a camera mounted on the lifting unit and connected to the cable.

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