KR20130126561A - Safety equipment of train platform - Google Patents

Abstract

According to the present invention, provided is a safety apparatus for a motor car platform in ascending and descending mode, which comprises a first post and a second post which are perpendicularly arranged on a platform to be separated from each other; a horizontal frame which connects the upper parts of the first and the second posts with each other; at least one screen which ascends and descends along the first and the second posts; a first pulley which is placed in the upper part of the first post; a first rope whose one side is wound on the first pulley and the other side connects to one end of the at least one screen; a second pulley which is placed in the upper part of the second post; a second rope whose one side is wound on the second pulley and the other side connects to the other end of the at least one screen; and a driving member which is mounted on the horizontal frame in order to lift or lower the screen by rotating the first and second pulleys at the same time.

Description

Safety equipment of train platform

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to safety equipment for a train, and more particularly, to a safety device installed in a train platform.

Generally, the platform of a subway or railway is open to the line so that passengers can board the train. Therefore, safety accidents such as falling accident that passengers fall into the railway line, collision with an incoming train and a passenger are frequently occurred.

In order to prepare for such a safety accident, a yellow safety line is displayed on the ground of the platform to encourage passengers to sit back behind the safety line.

However, the safety line can only raise awareness so that passengers can move back to the safety line. Actually, passengers are not actively preventing safety accidents that fall into the track or collide with the train.

Recently, as a platform safety device, a fixed screen and a movable door are installed between platform lines to provide a screen door that can be opened and closed by interlocking with a door of a train when a train stops, thereby positively preventing And the like.

However, since the conventional screen door is provided with a plurality of doors so as to correspond to the positions of the doors of the electric vehicle, the manufacturing and installation costs increase, and when the position of the stop of the electric vehicle and the position of the screen door do not coincide with each other, There is a problem in that the time of getting on and off the train is delayed and inconveniences of the passengers are incurred.

In addition, the conventional screen door type platform stabilizing device of the train is controlled by a train and an ATO (Automatic Train Operating) system. Since the ATO system can be applied only to a platform of a currently installed or recently constructed subway, There is a problem that the screen door can not be used for the line.

Korean Patent No. 0601112 discloses a configuration for relieving the problems of such a left and right side screen door in a " railway platform safety device ".

The rope lifting / lowering means includes a plurality of main bodies installed upright on a selected portion of the exit from the entrance of the platform on which the train enters, a rope installed to be moved up and down along the main body, And a moving means for moving the moving bodies.

In other words, the safety device of the train platform is designed to prevent safety accidents such as falling down of the passengers falling into the railway through a rope connected to a moving object vertically ascending and descending, collision of an incoming train and a passenger.

However, the "railway platform safety device " having the structure of Korean Patent Registration No. 0601112 described above is different from the conventional art in that rope-mounted moving objects are different in the vertical center position in the ascending and descending directions and the load tends to converge in one direction, have.

In addition, since a driver needs to be separately mounted on the main body in order to raise and lower the moving body, there is a problem that not only the amount of power used increases, but also the overall structure of the apparatus such as electric wiring becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to provide a railway platform safety device of a lifting / lowering type which can perform a motion of moving objects in a balanced manner and stably, The purpose is to provide. However, these problems are exemplary and do not limit the scope of the present invention.

According to one aspect of the present invention, there are provided a first post and a second post vertically disposed to be spaced apart from each other on a platform; A horizontal frame horizontally connecting the upper portions of the first and second posts to each other; At least one screen that ascends and descends along the first post and the second post; A first sheave disposed above the first post; A first rope having one side wound on the first pulley and the other side connecting one end of the at least one screen; A second sheave disposed above the second post; A second rope having one side wound on the second pulley and the other side connecting the other end of the at least one screen; And a driving member mounted on the horizontal frame so as to move the first and second sheaves upward and downward by simultaneously rotating the first sheave and the second sheave; And a control unit for controlling the safety of the train platform.

The pair of screens may comprise a first screen disposed at an upper portion and a second screen disposed at a lower portion of the first screen and overlapping with the first screen, have.

Wherein the first rope and the second rope have mutually corresponding configurations, the first rope comprises a first screen connecting rope connecting the first screen and a second screen connecting rope connecting the second screen, .

Wherein the first pulley and the second pulley have a configuration corresponding to each other, wherein the first pulley includes a small-sized car wound around the first screen-connecting rope, and a small screen disposed on the same rotation axis as the small- And may include a large pulley in which the rope is wound.

Wherein the driving member comprises: a motor mounted in a central region of the horizontal frame; A rotating pulley installed on a rotating shaft of the motor; And a first driving rope and a second driving rope wound around the rotating pulley in a direction crossing each other and each connected to the first pulley and the second pulley; . ≪ / RTI >

The driving member may include a pair of motors mounted in a central region of the horizontal frame; A rotating pulley installed on the rotating shafts of the pair of motors, respectively; And a first drive rope and a second drive rope wound on the respective rotation pulleys, each of the first drive rope and the second drive rope being connected to the first pulley and the second pulley; . ≪ / RTI >

The driving member may include a linear motor mounted on a central region of the horizontal frame; And a driving rope connecting the first pulley and the second pulley and moving in the first pulley or the second pulley by the linear motor.

The first pulley and the second pulley may each further include the first driving rope and the second driving rope, or a pulley during which the driving rope is wound.

The first pulley and the second pulley may further include a balance pulley on which a balancing connection rope is wound, the balance further connected to reduce the load of the driving member.

Meanwhile, according to another aspect of the present invention, there are provided first and second posts vertically arranged to be spaced apart from each other on a platform; A horizontal frame horizontally connecting the upper portions of the first and second posts to each other; At least one screen that ascends and descends along the first post and the second post; A first sheave disposed above the first post; A first rope having one side wound on the first pulley and the other side connecting one end of the at least one screen; A second sheave disposed above the second post; A second rope having one side wound on the second pulley and the other side connecting the other end of the at least one screen; A balance weight disposed below the first pulley and the second pulley, respectively; A counterbalance connecting rope having one end connected to the first pulley and the second pulley respectively and the other end wound on the balance weight; And a pair of driving members mounted on the first and second posts, respectively, for moving the first and second pulleys to move up and down the screen, and moving the balance rope connecting rope; And a control device for controlling the platform of the train.

Meanwhile, according to another aspect of the present invention, there are provided first and second posts vertically arranged to be spaced apart from each other on a platform; A horizontal frame horizontally connecting the upper portions of the first and second posts to each other; At least one screen that ascends and descends along the first post and the second post; A first sheave disposed above the first post; A first rope having one side wound on the first pulley and the other side connecting one end of the at least one screen; A second sheave disposed above the second post; A second rope having one side wound on the second pulley and the other side connecting the other end of the at least one screen; A balance weight disposed below the first pulley and the second pulley, respectively; A counterbalance connecting rope having one end connected to the first pulley and the second pulley respectively and the other end wound on the balance weight; A drive rope interconnecting the first pulley and the second pulley within the horizontal frame; And a drive member installed in at least one of the first post and the second post so as to move up and down the screen and move the balance rope to move the drive rope in the first pulley or the second pulley direction; And a control device for controlling the platform of the train.

According to an embodiment of the present invention as described above, it is possible to implement a safety device for a platform of a train, which can perform a rising and falling operation of the screen in a balanced manner and stably, thereby reducing a torsion phenomenon and a wear caused by an offset load.

In addition, since the screen can be moved up and down through one driving unit, the power consumption is reduced, and the structure of the device such as electric wiring is generally simplified. Of course, the scope of the present invention is not limited by these effects.

1 is a front view of a railway platform safety device according to a first embodiment of the present invention.
Figure 2 is a side view of the upright post of Figure 1;
3 is a plan view of the upright post of Fig.
4 is an operation diagram of Fig.
5 is a front view of a safety device for a train vehicle according to a second embodiment of the present invention.
FIG. 6 is a front view of a train vehicle platform safety apparatus according to a third embodiment of the present invention.
7 is an operation diagram of FIG. 6.
FIG. 8 is a front view of a train vehicle platform safety device according to a fourth embodiment of the present invention. FIG.
Figure 9 is a top view of the upright post of Figure 8;
10 is a front view of a safety device for a train platform according to a fifth embodiment of the present invention.
11 is a plan view of the upright post of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

2 is a side view of the first post 110 and the second post 120 of FIG. 1, and FIG. 3 is a side view of the first post 110 and the second post 120 of FIG. 1, 1 is a plan view of the first post 110 and the second post 120, and Fig. 4 is an operation diagram of Fig.

As shown in FIGS. 1 to 4, the railway platform safety device 1 according to the first embodiment of the present invention includes a first post 110, a second post 120, a horizontal frame 130, A screen 140 and 150 for moving up and down along the first post 110 and the second post 120 and one driving member 200 for moving the screens 140 and 150, .

The first post 110 and the second post 120 may be vertically disposed to be spaced apart from each other on a platform (not shown). The horizontal frame 130 may be disposed horizontally connecting the upper portions of the first and second posts 110 and 120 to each other.

The first post 110, the second post 120, and the horizontal frame 130 have a space therein, and the body 100 may be integrally formed so that the spaces communicate with each other. Of course, the main body 100 may be installed in a selected portion of the exit from the entrance of the platform on which the train enters, after each post is separately manufactured and assembled together.

The screen may have at least one number to move up and down along the first post 110 and the second post 120. For example, the screens may comprise a pair of first and second screens 140 and 140 disposed on an upper portion of the first screen 140 and a second screen 150 ).

Guide rails 111 and 112 may be formed on the first post 110 and the second post 120 so that the first screen 140 and the second screen 150 can smoothly ascend and descend. The first roller 141 and the second roller 151 can be mounted on the screens 140 and 150 so as to be able to move along the rails 111 and 112 while rotating. For example, the first roller 141 and the second roller 151 may use a linear motion member such as an LM block and an LM guide that can slide along the rails 111 and 112.

The screens 140 and 150 are installed on a safe line of a subway or a railroad waiting for a passenger to ride a train and ascend when the train reaches the riding position so that a passenger waiting on the platform can board the train, And when the train wants to start, it descends to secure the safety of passengers.

The screens 140 and 150 may be formed of metal plates or a plurality of ropes may be connected. Thus, the screens 140 and 150 may be referred to as a Rope Screen Door ("RSD"). Of course, the screens 140 and 150 may be of any of a variety of other shapes and materials. For example, the screens 140 and 150 may be provided in the form of a plate provided with a plurality of ropes connected to each other and covered with the ropes as a skeleton. At this time, the material of the cover can be variously selected.

The first pulley 160 is disposed on the upper portion of the first post 110 and the second pulley 160 is disposed on the upper portion of the second post 120 so that the screens 140 and 150 can be moved up and down. have. The first pulley 160 and the second pulley 160 may be connected to a first rope and a second rope that connect one end and the other end of the screens 140 and 150, respectively.

The first rope and the second rope may have mutually corresponding configurations, and the first pulley 160 and the second pulley 160 may have mutually corresponding configurations. Therefore, the first pulley 160 and the first rope mounted inside the first post 110 will be described in order to avoid redundant description.

The first pulley 160 may include a plurality of pulleys disposed on the first post 110 and disposed on one rotation axis. The first pulley 160 may be referred to as a sheave or pulley.

For example, as shown in FIGS. 2 and 3, the first pulley 160 may include a small-sized car 161, a large pulley 162, a middle pulley 163, and a balance pulley 164, as shown in FIGS. Each pulley can be used with the first rope wound.

The first rope may include a first screen connecting rope 142 connecting one side of the first screen 140 and a second screen connecting rope 152 connecting one side of the second screen 150. The length of the first screen connecting rope 142 may be shorter than the length of the second screen rope since the first screen 140 is positioned above the second screen 150. [ That is, the first screen connecting rope 142 may be a single rope, and the second screen rope 142 may be an elder rope.

The first screen connecting rope 142 may be wound on the small-sized car 161 described above and the second screen connecting rope 152 may be wound on the large- Here, the diameter of the large-diameter wheel 162 may be larger than the diameter of the small-sized car 161. Accordingly, the first screen 140 slowly rises and the second screen 150 rapidly rises while moving up and down the screen.

The driving member 200 is installed inside the horizontal frame 130 and rotates the first pulley 160 and the second pulley 160 simultaneously to move up and down the first and second screens 140 and 150 . For example, the driving member 200 includes a motor 201 mounted in a central region of the horizontal frame 130, a rotary pulley 205 installed on the rotary shaft of the motor 201, And may include a first driving rope 171 and a second driving rope 173 which are wound in a staggered direction and connected to the first pulley 160 and the second pulley 160, respectively.

The first driving rope 171 and the second driving rope 173 are wound or unwound and the first pulley 160 and the second driving rope 173 are rotated in the forward or reverse direction The second pulley 160 rotates and unwinds the first screen connecting rope 142 and the second screen connecting rope 152 connected to the respective small-sized car 161 and the large pulley 162 while rotating.

Accordingly, the first screen 140 and the second screen 150, which are respectively connected to the first screen connecting rope 142 and the second screen connecting rope 152, are lowered as shown in FIG. 1, As shown in FIG.

At this time, when the small-diameter vehicle 161 and the large-diameter pulley 162, which is larger than the diameter of the small-sized vehicle 161, rotate simultaneously due to the operation of the driving member 200, the rotation distances are different from each other. The rising and falling distance of the first screen 140 and the second screen 150 can be adjusted differently from each other.

1, the first driving rope 171 and the second driving rope 173 are connected to a rotary pulley (not shown) 205 in a direction crossing each other. However, in order to achieve this object, the first driving rope 171 and the second driving rope 173 are not necessarily wound around the rotating pulley 205 in the direction in which the first driving rope 171 and the second driving rope 173 are staggered, And a first driving rope 171 is connected to the auxiliary pulley so that the auxiliary pulley is rotated in the opposite direction to the rotating direction of the first pulley 160 It is easy to understand that it can be used. The structure in which the other end can rise when one end of the first screen 140 and the second end of the second screen 150 are raised can be variously suggested.

The small-sized car 161 and the large-sized car 162 are formed so as to have the same number according to the number of screens formed, and at the same time, the diameter of the small-sized car 161 can be made different from each other, For example, if there are two screens, two pulleys of different diameters may be provided, or three pulleys of different diameters may be provided if the number of screens is three. Or a single pulley may be provided if the number of screens is one.

The small-sized car 161 and the large-sized pulley 162 may be, for example, gears or pulleys capable of rotating smoothly. The first screen-connecting rope 142 and the second screen- A flexible belt or a rope or the like may be used so as to be wound or unwound around the outside diameter of the small-sized car 161 and the large-sized pulley 162. [

Meanwhile, the first pulley 160 and the second pulley 160 may be connected to the balance weight 180 as a weight for reducing the load of the driving member 200. The first pulley 160 and the second pulley 160 are provided with a balance pulley 164 that can be wound while being connected to the balance weight 180. The balance pulley 164 is connected to the balance pulley 180 connected to the balance pulley 180, The rope 181 may be wound.

The balance weights 180 may be configured to allow the operator to assemble or disassemble as a plurality of weights having a constant weight to control the weight.

As described above, according to the first embodiment of the present invention, the upward / downward movement of the screen can be balanced and stably performed through one driving member 200, so that the occurrence of twisting and wear caused by the offset load can be reduced.

In addition, since the screen can be moved up and down through one driving member 200, the power consumption is reduced, and the structure of the device such as electric wiring is generally simplified.

5 is a front view of a safety device for a train vehicle according to a second embodiment of the present invention. The present embodiment will be described with reference to FIG. 5, which is different from the above-described embodiment.

The railway platform safety device 1a of the present embodiment differs from the above-described embodiment in that the two driving members 210 and 220 comprise the driving portion 200a. That is, the driving member 200a includes a pair of motors 201 mounted on the central region of the horizontal frame 130, a rotating pulley 205 mounted on the rotating shafts of the pair of motors 201, And a first driving rope 171 and a second driving rope 173 wound on the pulley 205 and connected to the first pulley 160 and the second pulley 160, respectively.

Here, the pair of motors 201 move up the first screen 140 and the second screen 150 when they are rotated in a square direction, and lower the first screen 140 and the second screen 150 when they rotate in a reverse direction . Of course, the first screen 140 and the second screen 150 may be configured to rise when one motor 201 rotates in the forward direction and the other motor 201 rotates in the reverse direction.

FIG. 6 is a front view of a train vehicle platform safety apparatus according to a third embodiment of the present invention, and FIG. 7 is an operation diagram of FIG. In the present embodiment, portions different from the above-described embodiment will be described with reference to FIGS. 6 and 7. FIG.

The electric motor vehicle platform safety device 1b of this embodiment is similar to the first embodiment described above in that one driving member 200 is used, but a linear motor 200b is used in the central area of the horizontal frame 130, The drive rope 177 connecting the first pulley 160 and the second pulley 160 to move in the direction of the first pulley 160 or the second pulley 160 by the motor 200b is used, . One of the individual ropes may be connected to the left side of the linear motor 200b and the other individual rope may be provided to the linear motor 200b, As shown in FIG.

The linear motor 200b may include a moving block 230 to which the driving rope 177 is connected and a guide rail 240 for guiding the moving of the moving block 230 in the horizontal direction.

6, the first screen 140 and the second screen 150 are lowered when the mobile block 230 is positioned on the left side of the central region of the horizontal frame 130, The first screen 140 and the second screen 150 may be operated to move up to the right of the central region of the horizontal frame 130.

FIG. 8 is a front view of a train vehicle platform safety device according to a fourth embodiment of the present invention. FIG. The present embodiment will be described with reference to FIG. 8, which is different from the above-described embodiment.

The electric vehicle platform safety device 1c of this embodiment is similar to the second embodiment described above in that two driving members 300 are used, but the driving member 300 is made of a linear motor as in the third embodiment . However, in the third embodiment, one linear motor 200b is mounted in the central region of the horizontal frame 130, whereas the linear motor 300 of the present embodiment includes the first post 110 and the second post 120 And a balance weight connecting rope 181 provided on the weight balance connecting rope 181, respectively. The linear motor 300 can linearly move between the linear motor stator 301. The linear motor stator 301 may be fixed to the first post 110. At this time, the linear motor 300 can be regarded as a concept of the linear motor mover corresponding to the linear motor stator 301. The linear motor can consist of a stator and a mover, which is disclosed by the prior art. Each linear motor 300 moves the first pulley 160 and the second pulley 160 by forcibly moving the counterweight connecting rope 181 in the vertical direction to move the first screen 140 and the second screen 150 ). In this case, since a space is secured in the horizontal frame 130, various electric wirings and the like can be efficiently installed.

The driving member 300 shown in Fig. 8 may be replaced with a driving member in the form of a hydraulic cylinder.

9 is a plan view of the first post 110 of FIG.

The structure shown in FIG. 9 is almost the same as the structure shown in FIG. 3 except that the first driving rope 171 does not extend out of the first post 110, 300).

10 is a front view of a safety device for a train platform according to a fifth embodiment of the present invention. 11 is a plan view of the first post 110 of Fig. The present embodiment will be described with reference to FIGS. 10 and 11, which are different from the above-described embodiments.

The linear motor 300 is used as the driving member 200 as in the fourth embodiment described above but installed only in one of the first post 110 and the second post 120, The pulley 160 and the second pulley 160 are interconnected within the horizontal frame 130 by a drive rope 177. When the linear motor 300 moves up and down, the first driving rope 171 moves up and down. The small pulley 161, the large pulley 162, the intermediate pulley 261, the middle pulley 163, and the balance pulley 164 on the side of the first pulley 160 are rotated (rotated) by the movement of the first driving rope 171, . The driving rope 177 can be moved in the lateral direction by the rotation of the intermediate pulley 261. By this operation, the first screen 140 and the second screen 150 can be moved up and down.

As described above, according to the embodiments of the present invention, the lifting and lowering operation of the screen can be performed in a balanced manner and stably through the driving member, and the occurrence of torsion and abrasion due to the offset load can be reduced.

In addition, since the driving members can be arranged efficiently and the screen can be moved up and down, the amount of electric power used is reduced, and the structure of the device such as electric wiring is generally simplified.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: main body 110: first post
111, 112: guide rail 120: second post
130: horizontal frame 140: first screen
141: first roller 142: first screen connecting rope
150: second screen 151: second roller
152: second screen connecting rope 160: first pulley (second pulley)
161: Small car 162: Large pulley
163: heavy pulley 164: balanced pulley
171: first driving rope 173: second driving rope
175: driving rope 177: driving rope
180: balance weight 181: balance weight connecting rope
200, 200a, 200b, 300: driving member 201: motor
205: rotating pulley 210: first driving member
220: second driving member 230: moving block
240: Guide rail 261: Parameter pulley
300: Linear motor

Claims (11)

A first post and a second post vertically disposed to be spaced apart from each other on the platform;
A horizontal frame horizontally connecting the upper portions of the first and second posts to each other;
At least one screen that descends along the first post and the second post;
A first sheave disposed above the first post;
A first rope having one side wound on the first pulley and the other side connecting one end of the at least one screen;
A second sheave disposed above the second post;
A second rope having one side wound on the second pulley and the other side connecting the other end of the at least one screen; And
A driving member mounted to the horizontal frame to simultaneously rotate the first pulley and the second pulley to raise and lower the screen; Including, elevating electric vehicle platform safety device. The method of claim 1,
The screen is made in pairs,
The pair of screens includes a first screen disposed on an upper portion, and a second screen disposed on a lower portion of the first screen while being raised and overlapping with the first screen. 3. The method of claim 2,
Wherein the first rope and the second rope have mutually corresponding configurations,
The first rope includes a first screen connection rope for connecting the first screen, and a second screen connection rope for connecting the second screen, elevating type electric vehicle platform safety device. The method of claim 3,
Wherein the first pulley and the second pulley have a configuration corresponding to each other,
The first pulley, the vehicle pulley platform safety of the elevating method including a small vehicle, the first screen connection rope is wound, and a large carriage disposed on the same axis of rotation and the second screen connection rope is wound. Device. 5. The method of claim 4,
The drive member is
A motor mounted on the horizontal frame;
A rotating pulley installed on a rotating shaft of the motor; And
A first driving rope and a second driving rope wound on the rotating pulley in mutually staggered directions and each connected to the first pulley and the second pulley; Including, elevating electric vehicle platform safety device. 5. The method of claim 4,
The drive member is
A pair of motors mounted on the horizontal frame;
A rotating pulley installed on the rotating shafts of the pair of motors, respectively; And
A first driving rope and a second driving rope wound on the respective rotation pulleys and each connected to the first pulley and the second pulley; Including, elevating electric vehicle platform safety device. The method of claim 1,
The drive member is
A linear motor mounted on a central region of the horizontal frame; And
And a driving rope connecting the first pulley and the second pulley and moving in the direction of the first pulley or the second pulley by the linear motor. 8. The method according to any one of claims 5 to 7,
Wherein the first pulley and the second pulley further comprise a pulley on which the first drive rope and the second drive rope, or the drive rope is wound, respectively. 9. The method of claim 8,
Wherein the first pulley and the second pulley further comprise a balance pulley to which a balancing connection rope connected with a balance additionally connected to reduce the load of the driving member is wound. A first post and a second post vertically disposed to be spaced apart from each other on the platform;
A horizontal frame horizontally connecting the upper portions of the first and second posts to each other;
At least one screen that descends along the first post and the second post;
A first sheave disposed above the first post;
A first rope having one side wound on the first pulley and the other side connecting one end of the at least one screen;
A second sheave disposed above the second post;
A second rope having one side wound on the second pulley and the other side connecting the other end of the at least one screen;
A balance weight disposed under each of the first pulley and the second pulley;
A balance weight connecting rope having one end connected to each of the first pulley and the second pulley and the other end wound around the balance weight; And
A pair of driving members installed on the first post and the second post to respectively move the first pulley and the second pulley to move the screen up and down to move the balance weight connecting ropes; Including, elevating electric vehicle platform safety device. A first post and a second post vertically disposed to be spaced apart from each other on the platform;
A horizontal frame horizontally connecting the upper portions of the first and second posts to each other;
At least one screen that descends along the first post and the second post;
A first sheave disposed above the first post;
A first rope having one side wound on the first pulley and the other side connecting one end of the at least one screen;
A second sheave disposed above the second post;
A second rope having one side wound on the second pulley and the other side connecting the other end of the at least one screen;
A balance weight disposed under each of the first pulley and the second pulley;
A balance weight connecting rope having one end connected to each of the first pulley and the second pulley and the other end wound around the balance weight;
A drive rope interconnecting the first pulley and the second pulley within the horizontal frame; And
A driving member installed in at least one of the first post and the second post to move the screen up and down to move the counterweight connection rope to move the driving rope in the first pulley or the second pulley direction;
Including, elevating electric vehicle platform safety device.

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