KR100485448B1 - a safety device for taking and getting off of electric rail car - Google Patents

Abstract

The present invention relates to a safety device for getting on and off an electric vehicle, wherein the safety device (10) has a fixed shaft provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2). 20; It is rotatably coupled to the outer circumferential surface of the fixed shaft 20, a plurality of ports 31, 32 are drilled on the outer circumferential surface and spaced apart between the electric vehicle 2 and the platform 1 on one side of the outer circumferential surface A hollow journal 30 in which a safety scaffold 36 having a width that can be covered and a width greater than at least the door 3 is formed; A distributor (47) connected to the ports (31) (32) of the journal (30) via respective hoses (45) (46) so as to branch and supply hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; Control unit 40 for controlling the drive motor 41 to drive as the door 3 of the electric vehicle 2 is opened and closed; including, the door 3 and the boarding station (1) of the electric vehicle (2) By eliminating the space between the rotating footrest 36, there is an effect that the safety of the passenger at the time of getting on and off the train 2 can be prevented in advance, so as to maximize the safety of the passenger.

Description

Safety device for taking and getting off of electric rail car}

The present invention relates to a safety device for getting on and off a train, and more particularly, a safety footrest is provided between a platform facing a door of an electric vehicle at the time of getting on and off, and is generated due to a spaced distance between the vehicle and the platform. The present invention relates to safety devices for getting on and off trains to prevent accidents.

In general, when a train arrives, a yellow safety line is drawn, which means a boundary that allows passengers in the platform to safely wait and board the train.

This safety line is designed to allow passengers to get on and off the line more safely when the train arrives, after leaving the line.

However, such a platform forms a constant spaced distance from the electric vehicle. Since the space between the spaced electric vehicle and the platform does not have a separate safety device, it only depends on announcements, alarm lights, and alarm sounds. Many accidents such as falling out of the passenger's foot due to carelessness of the passenger during the rush hour of commuting and going to work often occur, and there are many inconveniences when getting on and off the disabled, children and the elderly. There was a problem brought about.

Accordingly, the present invention has been made in order to solve the above-described problems, the safety accident of passengers to get on and off by providing a safety step by rotating the safety step from the electric vehicle at the time of opening the door on the spaced part spaced between the electric car and the platform. The purpose is to provide safety devices for getting on and off electric trains to prevent passengers and ensure maximum passenger safety.

The electric vehicle loading / unloading safety device of the present invention for achieving the above object is provided at the lower end of the door of the electric vehicle facing the platform, and is rotated as the door is opened and closed to solve the space spaced between the electric vehicle and the platform. A safety device, comprising: a fixed shaft having both side ends fixed to an electric car so as to be spaced apart from a lower end of an entrance door of an electric car; It is rotatably coupled to the outer circumferential surface of the fixed shaft, a plurality of ports are drilled on the outer circumferential surface and a width to cover the space spaced between the electric car and the platform on one side of the outer circumferential surface, and at least a safety footrest having a width larger than the door A hollow journal in which it is formed; A distributor connected to the port of the journal via each hose so as to branch and supply hydraulic pressure; A hydraulic pump provided to pressurize and supply hydraulic pressure from a hydraulic source to the distributor; A drive motor provided to drive the hydraulic pump; And a controller configured to control the driving motor to be driven as the door of the electric vehicle is opened and closed.

In addition, the following projections are formed so that the one end surface is curved in an arc shape corresponding to the inner circumferential surface of the journal to one side of the outer circumferential surface of the fixed shaft so that the journal has a stable rotational motion on the fixed shaft, so as to contact the inner circumferential surface of the journal. On one side of the inner circumferential surface of the journal, that is, the inner circumferential surface located between the ports, one end surface is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft, and a rotating protrusion having a stepped contact portion which is brought into surface contact with the outer circumferential surface of the fixed shaft is formed.

In addition, on both sides of the rotating projection to control the excessive rotation of the journal rotated on the fixed shaft is formed a locking projection that is curved in an arc shape corresponding to the outer peripheral surface of the fixed shaft to be caught on the following projection.

In addition, the locking projection is formed as a length at least equal to or longer than the diameter of the port so as to secure a space spaced so that the hydraulic pressure can flow between the rotating protrusion of the journal and the following protrusion of the fixed shaft.

In addition, a piezoelectric element is provided on one surface of the safety scaffold opposite to the landing so that the journal rotated on the fixed shaft, that is, the safety scaffold flexibly corresponds to the height of the landing.

In addition, one side of the electric vehicle facing the safety footrest is provided with a switch to control the operation of the drive motor and the hydraulic pump by the control unit while the contact on or off by the safety footrest restored to its original state.

In addition, in order to ensure that the safety device is operated according to the door of the opening and closing of the electric vehicle, a sensor for sensing the door to be moved in accordance with the opening and closing operation on one side of the electric vehicle is inserted into the door to output the detection signal to the control unit It is provided.

The distributor also comprises a solenoid valve.

In addition, a plurality of adjacent flow paths are contemplated so that hydraulic pressure flows on the outer circumferential surface of the fixed shaft adjacent to the following protrusion so that the scaffold rotated by reducing the speed of the journal, i.e., the beginning and the end of the scaffold, smoothly contacts the electric vehicle or the platform. .

In addition, the flow path is formed to have a wider width than the contact portion of the rotating protrusion in contact with the outer peripheral surface of the fixed shaft.

In addition, the journal, that is, a plurality of adjacent to the hydraulic pressure flows on the inner circumferential surface of the rotary protrusion, that is, the journal adjacent to the supply port so as to smoothly contact the electric vehicle or platform by rotating the deceleration speed of the beginning and end of the footrest The flow path is cautious.

In addition, the flow path is formed to have a wider width than the following protrusion contacting the inner circumferential surface of the journal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 are views showing the safety of getting on and off the electric vehicle according to an embodiment of the present invention, the safety device 10 is to correspond to the door 3 of each of the electric vehicle (2) It is preferred that each is provided and controlled.

The safety device 10 is provided at the lower end of the entrance door 3 of the electric vehicle 2, and is rotated in accordance with the opening and closing of the door 3 so as to eliminate the space spaced between the electric vehicle 2 and the platform 1. do.

In more detail, the safety device 10 is provided with a fixed shaft 20, the both ends of which are fixed to the electric vehicle 2 so as to be spaced apart from the lower end of the door 3 of the electric vehicle 2, this fixed The hollow journal 30 is rotatably coupled to the outer circumferential surface of the shaft 20.

Here, the journal 30 is preferably installed so that the upper end of the outer peripheral surface is the same surface as the interior bottom surface of the electric vehicle (2).

Therefore, the installation position of the fixed shaft 20 is in a state spaced apart from the lower end portion of the door 3 and the front (that is, the landing side) and a predetermined amount downward.

The journal 30 has perforated ports 31 and 32 spaced at predetermined intervals on the outer circumferential surface thereof, and an outer circumferential surface of the journal 30 on one side spaced apart from the ports 31 and 32. On the top, a safety scaffold 36 having a width capable of covering the spaced space between the electric vehicle 2 and the landing 1 and at least a width larger than the door 3 is integrally formed.

On the other hand, a fan-shaped following protrusion 21 protrudes and is formed on one side of the outer circumferential surface of the fixed shaft 20 so that the journal 30 achieves a stable rotation operation on the fixed shaft 20. One end of the curved surface is curved in an arc shape corresponding to the inner peripheral surface of the journal 30 is provided to be in surface contact with the inner peripheral surface of the journal (30).

Then, one side of the inner circumferential surface of the journal 30, that is, the inner circumferential surface between the ports 31, 32, the fan-shaped rotating protrusions 33 are protruded and formed, one end of the rotary protrusion 33 is one end surface A contact portion 33a which is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 and brought into surface contact with the outer circumferential surface of the fixed shaft 20 is protruded.

The following contact portion 21 and the contact portion 33a of the rotating protrusion 33 formed as described above are in a state of being firmly in contact with each other to maintain the airtightness and watertightness on the inner circumferential surface of the journal 30 and the outer circumferential surface of the fixed shaft 20, On the contact surface thereof, an oil film formed by hydraulic pressure is formed to be rotatable, thereby reducing friction during rotation.

In addition, both side surfaces of the rotating protrusion 33 in contact with the fixed shaft 20 is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 so that the locking protrusion 34 is caught by the following protrusion 21. It is formed, it is provided to control the amount of rotation of the journal 30 to secure the conduit of the ports (31) (32).

The locking protrusion 34 formed as described above includes at least a port so as to secure a space spaced so that the hydraulic pressure can flow between the rotating protrusion 33 of the journal 30 and the following protrusion 21 of the fixed shaft 20. It protrudes as a length L equal to or longer than the diameter D1 of (31) (32).

In addition, one end of each of the open and closed hoses 45 and 46 is connected to each of the ports 31 and 32 of the journal 30, and the other end thereof is connected to a distributor 47 for supplying branched hydraulic pressure. It is provided.

The distributor 47 is composed of a solenoid valve, and the distributor 47 configured as described above is provided with a hydraulic pump 42 for feeding and supplying hydraulic pressure from a predetermined hydraulic pressure supply pipe 43 and a return pipe 44. It is provided connected via a medium.

The hydraulic pump 42 is driven by a drive motor 41 provided at one end thereof, and the drive motor 41 is driven so as to be driven as the door 3 of the electric vehicle 2 is opened and closed. Is controlled by

The control unit 40 is preferably linked to the main control unit (not shown) of the electric vehicle (2).

In addition, the front of the safety scaffold 36 facing the landing 1 so that the journal 30 that is rotated on the fixed shaft 20, that is, the safety scaffold 36 can flexibly correspond to the height of the landing (1). The piezoelectric element 37 is provided in the whole surface.

In most cases, the interior floor of the electric vehicle 2 is flush with the landing 1 or is located slightly higher, so that the angle thereof forms an angle of about 90 to 120 degrees.

Therefore, the piezoelectric element 37 of the rotating safety scaffold 36 comes into contact with the landing and outputs a signal according to the control unit 40 to control the operation of the driving motor 41 and the hydraulic pump 42 to thereby operate the safety scaffold. The rotation of 36 is stopped.

And, one side of the electric vehicle (2) facing the safety footrest 36 is provided with a switch 38 to be turned on (ON) or off (OFF) by the safety footrest 36 restored to its original state, The control unit 40 controls the operation of the drive motor 41 and the hydraulic pump 42 according to the contact of the switch 38.

In addition, the safety device 10, the door 3 of the electric vehicle 2 is operated in conjunction with the opening and closing of the bar, for this purpose the detection sensor on one side of the electric vehicle 2 is inserted into the door (3) is opened 48 is provided to detect the door (3) to be moved in accordance with the opening and closing operation is provided to output its detection signal to the control unit (40).

On the other hand, the safety device 10 made as described above, in order to reduce the rotational speed of the initial and end of the safety footrest 36 so that the footrest 36 rotated to smoothly contact the electric vehicle (2) or platform (1). On the outer circumferential surface of both sides of the fixed shaft 20 adjacent to the following protrusion 21, or on both inner circumferential surfaces of the journal 30 adjacent to the rotating protrusion 33, a plurality of flow passages 22 are provided so that hydraulic pressure can flow therein ( 35) are formed contemplated sequentially adjacent to each other.

The flow path 22 formed on the outer circumferential surface of the fixed shaft 20 is formed to have a wider width than the contact portion 33a of the rotating protrusion 33 in contact with the outer circumferential surface of the fixed shaft 20, and on the inner circumferential surface of the journal 30. The flow path 35 formed in the is formed as a wider width than the one end surface of the following protrusion 21, that is, the contact surface in contact with the inner circumferential surface of the journal 30.

The flow paths 22 and 35 may be selectively formed on the outer circumferential surface of the fixed shaft 20 or the inner circumferential surface of the journal 30, but are preferably formed on both sides.

In addition, in the present embodiment, the flow channel 22, which is recessed on the outer circumferential surface of the fixed shaft 20, is exemplarily integrated in the axial direction. For example, the flow channel 22 is separated into each unit flow channel. It is also possible to form a plurality in the axial direction.

In the safety device 10 according to the present invention made as described above, when the electric vehicle 2 enters the platform and stops, the driver of the electric vehicle 2 is the door 3 of the electric vehicle 2 facing the platform 1. Will open.

Then, the door 3 to be opened is inserted while slidingly moved to one side of the electric vehicle 2, and the door 3 to be inserted is detected by the detection sensor 48 provided in the electric vehicle 2, and the detection signal thereof is The control unit 40 recognizes that the door 3 is opened by being applied to the control unit 40.

In addition, since the control unit 40 is linked not only with the signal of the detection sensor 48 but also with the main control unit of the electric vehicle 2, the current state of the door 3 controlled by the main control unit is always maintained. It becomes perceptible.

On the other hand, when the door 3 is opened as described above, the control unit 40 operates the drive motor 41, the hydraulic pump 42 is driven by the operation of the drive motor 41 is driven from a predetermined hydraulic source The hydraulic pressure is pumped and supplied to the distributor 47 formed of the solenoid valve through the supply pipe 43.

The hydraulic pressure supplied to the distributor 47 flows in between the rotating protrusion 33 of the journal 30 and the following protrusion 21 of the fixed shaft 20 through the opening hose 45 and the port 31 on one side. 30).

Then, the hydraulic pressure on the opposite side that has already been supplied between the journal 30 and the fixed shaft 20 is returned to the distributor 47 through the other port 32 and the closing hose 46 and returned to the distributor 47. The hydraulic pressure is returned to the predetermined hydraulic pressure source through the return pipe 44 and stored.

On the other hand, when the journal 30 is rotated as described above, the safety footrest 36 integrally formed on the outer peripheral surface of the journal 30 is rotated in conjunction with the journal (30).

The rotated safety scaffold 36 is operated by pressing the piezoelectric element 37 while one surface thereof is in contact with the landing 1, and the detection signal thereof is applied to the control unit 40 so that the control unit 40 is driven by a driving motor ( By stopping the driving of the 41 and the hydraulic pump 42, the rotation of the safety scaffold 36 is stopped.

At this time, the safety footrest 36 is rotated as shown in Figure 5b attached, and the journal 30 linked to the safety footrest 36 is also rotated as shown in Figure 5b, diarrhea journal 30 and the safety footrest ( Even if 36 is rotated completely so that one surface of the rotating protrusion 33 of the journal 30 is adjacent to one surface of the following protrusion 21 of the fixed shaft 20, the other port is formed by the locking protrusion 34 of the rotating protrusion 33. The conduit of (32) is secured without being blocked (L≥D1).

In addition, the safety scaffold 36 is rotated in conjunction with the journal 30, the amount of rotation of the journal 30 is the locking projection 34 formed on the rotating protrusion 33 is caught by the following protrusion 21 By limiting, excessive rotation of the journal 30 is prevented.

On the other hand, the rotational speed of the journal 30 and the safety scaffold 36 rotated as described above, the pressure of the hydraulic pressure discharged through the ports 31, 32, that is, the hydraulic pressure discharged because it is closely related to the amount and speed of the hydraulic pressure It is possible to control the rotational speed of the journal 30 and the footrest 36 by controlling the pressure, that is, the amount and speed of the hydraulic pressure.

Therefore, in the present embodiment, a part of the hydraulic pressure introduced and discharged by the flow passages 22 and 35 formed on the outer circumferential surface of the fixed shaft 20 or the inner circumferential surface of the journal 30 flows into the flow passages 22 and 35 to flow. As a result, pressure loss occurs in the inflow and outflow hydraulic pressure so that the initial and end rotational speeds of the journal 30 and the safety scaffold 36 are reduced to rotate smoothly.

That is, each of the flow paths 22 and 35 opposed to the contact portion 33a and the following protrusion 21 of the rotating protrusion 33 is formed wider than the contact portion 33a and the following protrusion 21, When the 33a and the following protrusions 21 pass through respective opposed flow paths 22 and 35, the hydraulic pressure flows into one end of the flow paths 22 and 35 and is discharged to the other end to rotate the journal 30. The speed of the scaffold 36 can be reduced.

At this time, since the amount of hydraulic pressure flowing in the flow paths 22 and 35 is small compared to the amount of hydraulic pressure supplied and discharged through the ports 31 and 32, the hydraulic pressure flows through the flow paths 22 and 35. Therefore, even if a loss occurs in the supplied and discharged hydraulic pressure, the loss amount is insufficient, so that the rotation of the journal 30 and the safety scaffold 36 is not stopped, but only the rotation speed is reduced.

On the other hand, the space between the electric vehicle 2 and the platform 1 is covered by the safety footrest rotated as described above, thereby preventing safety accidents such as the passenger's foot falling off when the electric vehicle 2 gets on or off. It will be possible to prevent them, especially children, the elderly and disabled people will be more secure.

After the driver is completely finished, the driver of the electric vehicle 2 closes the door 3, and the closing operation of the door 3 is detected by the detection sensor 48 to detect the current state of the door 3. The controller 40 recognizes it.

Accordingly, the control unit 40 operates the drive motor 41 again in response to the operation of the door 3 to re-drive the hydraulic pump 42, and the distributor 40 is driven by the hydraulic pump 42. 47) hydraulic pressure is resupplied.

The hydraulic pressure supplied to the distributor 47 is supplied between the journal 30 and the fixed shaft 20 through the closing hose 46 and the port 32 on the other side as opposed to the opening of the door 3, and the journal The hydraulic pressure on the opposite side supplied between the 30 and the fixed shaft 20 is returned to a predetermined hydraulic pressure source through the port 31 and the open hose 45 on one side and stored.

As described above, the journal 30 and the safety footrest 36 are rotated in the opposite directions in the above-mentioned directions by the hydraulic pressure supplied through the closing hose 46, and the safety footrest 36 which is rotated in the reverse direction is the electric vehicle 2. Rotation is performed until the initial state as shown in FIG.

Then, when the safety footrest 36 is in the initial state to be parallel to the electric vehicle 2, the locking protrusion 34 of the rotary protrusion 33 is in contact with the following protrusion 21 of the fixed shaft 20 to be secured Rotation of the footrest 36 is stopped.

That is, the footrest 36 rotated as described above presses the switch 38 provided on the electric vehicle 2 to turn on or off the contact point. By recognizing, the operation of the driving motor 41 and the hydraulic pump 42 is stopped.

In this case, the hooking protrusion 34 has a length L at least equal to or longer than the diameter D1 of the port 31 (L≥D1) so that the conduit of the port 31 is not blocked. The safety device 10 is normally operated.

On the other hand, Figures 6 to 8 are diagrams showing the safety of getting on and off the electric vehicle according to another embodiment of the present invention, before explaining another embodiment of the present invention in the same portion as the above-described embodiment Are denoted by the same reference numerals, and repeated description thereof will be omitted, and only different points will be described.

As shown, the safety device 10 according to the present embodiment, which is largely different from the above-described embodiment, has a difference in the configuration of the fixed shaft 120 and the journal 130.

The fixed shaft 120 according to the present embodiment is provided with both side ends fixed to the electric vehicle 2 so as to be spaced apart from the lower end of the entrance door 3 of the electric vehicle 2, one side of which is parallel to the axial direction and in the axial direction. A plurality of ports 124 and 125 having vertical discharge holes 124a and 125a are drilled.

On one side of the outer circumferential surface of the fixed shaft 120, that is, the outer circumferential surface between the two ports 124 and 125, one end surface thereof is curved in an arc shape, and a following protrusion 121 is formed to protrude, and the journal 130 described later. It is provided to be in surface contact with the inner peripheral surface of the.

In addition, the hollow journal 130 corresponding to the fixed shaft 120 is rotatably coupled on the outer circumferential surface of the fixed shaft 120, the end of the following protrusion 121 is in surface contact with one side of the inner circumferential surface, One side of the outer circumferential surface is integrally formed with a safety scaffold 133 having an area capable of covering the spaced space between the electric vehicle 2 and the landing 1 and at least a width larger than the door 3.

One surface of the safety scaffold 133, that is, the surface facing the landing 1 is provided with a piezoelectric element 134 configured to control excessive rotation of the safety scaffold 133.

One side of the inner circumferential surface of the journal 130 has a stepped contact portion 131a protruded so that one end surface thereof is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 120 to be in surface contact with the outer circumferential surface of the fixed shaft 120. Rotating protrusion 131 is formed.

Meanwhile, both ends of the following protrusion 121 are curved in an arc shape corresponding to the inner circumferential surface of the journal 130 so that the locking protrusion 122 is caught by the rotating protrusion 131. And excessive rotation of the safety footrest 133.

In addition, the locking protrusion 122 is formed at least as the length (L) or the same as or longer than the diameter (D2) of the discharge port (124a) (125a) of the ports (124, 125), and the rotating protrusion (131) and , The hydraulic space is introduced between the following protrusion 121 to ensure a space spaced to flow.

On the other hand, the fixed shaft 120 or the journal 130 of the safety device 10 made as described above is a footrest 133 is rotated by reducing the rotational speed of the initial and end of the safety footrest 133, the electric vehicle (2) or In order to smoothly contact the landing 1, the journal 130 on both sides of the outer peripheral surface of the fixed shaft 120 adjacent to the discharge ports 124a and 125a of the ports 124 and 125, or adjacent to the rotating protrusion 131. On both inner circumferential surfaces of the plurality of flow passages 123 and 132 are formed to be sequentially contiguous adjacent to each other to allow the hydraulic flow to flow.

The flow path 123 formed on the outer circumferential surface of the fixed shaft 120 is formed to have a wider width than the contact portion 131a of the rotating protrusion 131 in contact with the outer circumferential surface of the fixed shaft 120, and on the inner circumferential surface of the journal 130. The flow path 132 formed in the upper surface of the follower protrusion 121 is formed to have a wider width than the contact surface that is in contact with the inner circumferential surface of the journal 130.

The flow paths 123 and 132 may be selectively formed on the outer circumferential surface of the fixed shaft 120 or the inner circumferential surface of the journal 130, but are preferably formed on both sides.

In addition, in the present embodiment, as in the above-described embodiment, the flow channel 123 recessed on the outer circumferential surface of the fixed shaft 120 is exemplarily integrated in the axial direction. A plurality of unit flow paths spaced apart may be formed in the axial direction.

The safety device 10 having the fixed shaft 120 and the journal 130 according to the present embodiment made as described above is the same as the above-described embodiment, and repeated description thereof will be omitted.

However, in the present embodiment, the locking protrusion 122 is formed at one end of the following protrusion 121 facing the discharge ports 124a and 125a of the fixed shaft 120 and the ports 124 and 125 formed. In order to prevent the discharge ports 124a and 125a of the ports 124 and 125 from being blocked at all times, a pipe thereof can be secured.

As described above, the electric vehicle loading / unloading safety device of the present invention eliminates the safety accident of passengers during the electric vehicle loading / unloading by eliminating the space between the entrance door and the landing of the electric vehicle as a rotating safety scaffold. It is effective in preventing passengers to maximize passenger safety.

1 is an enlarged view showing an entrance and a landing of an electric vehicle according to the present invention.

2 is a view showing the safety of the electric vehicle fault according to the present invention.

Figure 3 is a half sectional perspective view showing a coupling state of the fixed shaft and the journal of the safety device according to an embodiment of the present invention

Figure 4 is a longitudinal sectional view showing the speed control means of the safety device according to an embodiment of the present invention

Figure 5 is a state diagram of the use of the safety device according to an embodiment of the present invention, Figure 5a is a longitudinal sectional view showing an initial state of the safety scaffold, Figure 5b is a longitudinal sectional view showing a rotated state.

Figure 6 is a half sectional perspective view showing a coupling state of the fixed shaft and the journal of the safety device according to another embodiment of the present invention

Figure 7 is a longitudinal sectional view showing a speed regulating means of the safety device according to another embodiment of the present invention

8 is a state diagram used in the safety device according to another embodiment of the present invention, Figure 8a is a longitudinal cross-sectional view showing an initial state of the safety scaffold, Figure 8b is a longitudinal cross-sectional view showing a rotated state.

<Description of the symbols for the main parts of the drawings>

D1: diameter of the port

D2: outlet diameter of port

L: Length of the stopping projection

1: platform 2: electric car

3: Door 10: Safety Device

20: fixed shaft 21: following protrusion

22: Euro 30: Journal

31,32: Port 33: Revolving protrusion

33a: contact portion 34: locking projection

35: Euro 36: safety footing

37: piezoelectric element 38: switch

40: control unit 41: drive motor

42: hydraulic pump 43,44: supply and return pipe

45,46: open and closed hose 47: distributor

48: sensor 120: fixed shaft

121: following protrusion 122: locking projection

123: Euro 124,125: Port

124a, 125a: outlet 130: journal

131: rotating protrusion 131a: contact portion

132: euro 133: scaffold member

134: piezoelectric element

Claims (19)

Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device (10) includes a fixed shaft (20) provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2); It is rotatably coupled to the outer circumferential surface of the fixed shaft 20, a plurality of ports 31, 32 are drilled on the outer circumferential surface and spaced apart between the electric vehicle 2 and the platform 1 on one side of the outer circumferential surface A hollow journal 30 in which a safety scaffold 36 having a width that can be covered and a width greater than at least the door 3 is formed; Distributors connected to the ports 31 and 32 of the journal 30 via respective hoses 45 and 46 to selectively branch and supply hydraulic pressure to rotate the journal 30 and the safety scaffold 36. (47); A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; And a control unit 40 which controls the driving motor 41 to be driven as the door 3 of the electric vehicle 2 is opened and closed. A piezoelectric element (1) is formed on one surface of the safety scaffold 36 opposite to the landing platform 1 so that the journal 30, that is, the safety scaffold 36, which is rotated on the fixed shaft 20 fluidly corresponds to the height of the landing platform 1. 37) It is equipped with a safety device for getting on and off the electric vehicle. The method of claim 1, One end surface of the journal 30 is curved in an arc shape corresponding to an inner circumferential surface of the journal 30 so that the journal 30 has a stable rotation operation on the fixed shaft 20. The following protrusion 21 which is in surface contact with the inner circumferential surface is protruded and formed, On one side of the inner circumferential surface of the journal 30, that is, between the ports 31 and 32, one end surface thereof is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 to the outer circumferential surface of the fixed shaft 20. Safety device for getting on and off the electric vehicle, characterized in that the rotating protrusion 33 having a stepped contact portion (33a) to be in contact with the surface protruded. The method of claim 2, In order to control the excessive rotation of the journal (30) rotated on the fixed shaft 20 to be curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 on both sides of the rotating protrusion 33 to be caught on the following protrusion 21 Electric car getting on and off safety device, characterized in that the locking projection 34 is formed. The method of claim 3, wherein The locking protrusion 34 may include at least a port 31 so as to secure a space spaced so that the hydraulic pressure may flow between the rotating protrusion 33 of the journal 30 and the following protrusion 21 of the fixed shaft 20. A safety device for getting on and off electric trains, characterized in that the length L is equal to or longer than the diameter D1 (L≥D1). delete The method of claim 1, The driving motor 41 and the hydraulic pump 42 are controlled by the control unit 40 while one side of the electric vehicle 2 facing the safety footrest 36 is turned on or off by the safety footrest 36 restored to its original state. Safety device for getting on and off electric trains, characterized in that the switch 38 is provided to control the operation of the. The method of claim 1, In order for the safety device 10 to operate according to the door 3 to be opened and closed of the electric vehicle 2, the door 3 to be moved in accordance with the opening and closing operation to one side of the electric vehicle 2 into which the door 3 to be opened is inserted. Safety detection device for getting on and off the electric vehicle, characterized in that it is provided with a detection sensor 48 to detect and output its detection signal to the control unit 40. The method of claim 1, The distributor 47 is a safety device for getting on and off the electric vehicle, characterized in that consisting of a solenoid valve. The method of claim 2, The fixed shaft adjacent to the follower protrusion 21 so that the journal 30, that is, the footrest 36 rotated by decelerating the initial and end rotational speeds of the footrest 36, smoothly contacts the electric vehicle 2 or the platform 1. Safety device for getting on and off the electric vehicle, characterized in that a plurality of adjacent flow paths (22) concave so as to flow the hydraulic pressure on the outer peripheral surface of the (20). The method of claim 9, The passage 22 has a wider width than the contact portion (33a) of the rotary protrusion 33 in contact with the outer peripheral surface of the fixed shaft 20, characterized in that the electric safety getting on and off the electric vehicle. The method of claim 2, The rotary projections 33, that is, the supply port, so that the journal 30, that is, the footrest 36, which is rotated by decelerating the initial and final rotational speed of the footrest 36, smoothly contacts the electric vehicle 2 or the platform 1, respectively. Safety device for getting on and off the electric vehicle, characterized in that a plurality of adjacent flow paths (35) concave so that the hydraulic pressure flows on the inner peripheral surface of the journal (30) and adjacent journal (30). The method of claim 11, The passage 35 is formed as a wider width than the following protrusions 21 in contact with the inner peripheral surface of the journal 30, the safety of getting on and off the electric vehicle. Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device (10) includes a fixed shaft (20) provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2); A following protrusion 21 formed on one side of the outer circumferential surface of the fixed shaft 20 by curved in an arc shape to protrude. Rotatingly coupled on the outer circumferential surface of the fixed shaft 20, the end of the following protrusion 21 is in surface contact with one side of the inner circumferential surface, a plurality of ports 31, 32 are drilled on the outer circumferential surface and one side of the outer circumferential surface It includes a hollow journal (30) formed with a width that can cover the spaced space between the electric vehicle (2) and the platform (1), and a safety footrest 36 having a width at least larger than the door (3); One end of an inner circumferential surface of the journal 30, that is, an inner circumferential surface located between the ports 31 and 32, is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20, and thus on the outer circumferential surface of the fixed shaft 20. A protruding protrusion 33 having a stepped contact 33a formed to be in surface contact; The following protrusions are curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 to control excessive rotation of the journal 30 and the safety scaffold 36 which are rotated on the fixed shaft 20 on both sides of the rotating protrusion 33. A locking protrusion 34 formed to protrude to be hooked to the 21; A distributor (47) formed of a solenoid valve connected to the ports (31) (32) of the journal (30) via respective hoses (45) (46) to diverge hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; Safety control device for a train, characterized in that it comprises a; control unit 40 for controlling the drive motor 41 to drive as the door (3) of the electric vehicle (2) is opened and closed. Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device (10) includes a fixed shaft (20) provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2); A following protrusion 21 formed on one side of the outer circumferential surface of the fixed shaft 20 by curved in an arc shape to protrude. Rotatingly coupled on the outer circumferential surface of the fixed shaft 20, the end of the following protrusion 21 is in surface contact with one side of the inner circumferential surface, a plurality of ports 31, 32 are drilled on the outer circumferential surface and one side of the outer circumferential surface It includes a hollow journal (30) formed with a width that can cover the spaced space between the electric vehicle (2) and the platform (1), and a safety footrest 36 having a width at least larger than the door (3); One end of an inner circumferential surface of the journal 30, that is, an inner circumferential surface located between the ports 31 and 32, is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20, and thus on the outer circumferential surface of the fixed shaft 20. A protruding protrusion 33 having a stepped contact 33a formed to be in surface contact; Controls excessive rotation of the journal 30 and the safety scaffold 36 which are rotated on the fixed shaft 20 on both sides of the rotating protrusion 33 and is spaced apart between the rotating protrusion 33 and the following protrusion 21. The following protrusions are bent in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 with a length L equal to or longer than the diameter D1 of the ports 31 and 32 so as to secure a space therein. A locking protrusion 34 formed to protrude to be hooked to the 21; The safety scaffold 36 which is rotated together with the journal 30 is provided on one surface of the safety scaffold 36 facing the landing 1 so as to flexibly correspond to the height of the landing 1. A piezoelectric element 37 adapted to control the total amount; A switch configured to control rotation of the journal 30 and the safety footrest 36 while the contact is turned on or off by the safety footrest 36 restored to its original state on one side of the electric vehicle 2 facing the safety footrest 36 ( 38); A distributor (47) formed of a solenoid valve connected to the ports (31) (32) of the journal (30) via respective hoses (45) (46) to diverge hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; Safety control device for a train, characterized in that it comprises a; control unit 40 for controlling the drive motor 41 to drive as the door (3) of the electric vehicle (2) is opened and closed. Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device (10) includes a fixed shaft (20) provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2); A following protrusion 21 formed on one side of the outer circumferential surface of the fixed shaft 20 by curved in an arc shape to protrude. Rotatingly coupled on the outer circumferential surface of the fixed shaft 20, the end of the following protrusion 21 is in surface contact with one side of the inner circumferential surface, a plurality of ports 31, 32 are drilled on the outer circumferential surface and one side of the outer circumferential surface It includes a hollow journal (30) formed with a width that can cover the spaced space between the electric vehicle (2) and the platform (1), and a safety footrest 36 having a width at least larger than the door (3); One end of an inner circumferential surface of the journal 30, that is, an inner circumferential surface located between the ports 31 and 32, is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20, and thus on the outer circumferential surface of the fixed shaft 20. A protruding protrusion 33 having a stepped contact 33a formed to be in surface contact; Controls excessive rotation of the journal 30 and the safety scaffold 36 which are rotated on the fixed shaft 20 on both sides of the rotating protrusion 33 and is spaced apart between the rotating protrusion 33 and the following protrusion 21. The following protrusions are bent in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 with a length L equal to or longer than the diameter D1 of the ports 31 and 32 so as to secure a space therein. A locking protrusion 34 formed to protrude to be hooked to the 21; The safety scaffold 36 which is rotated together with the journal 30 is provided on one surface of the safety scaffold 36 facing the landing 1 so as to flexibly correspond to the height of the landing 1. A piezoelectric element 37 adapted to control the total amount; A switch configured to control rotation of the journal 30 and the safety footrest 36 while the contact is turned on or off by the safety footrest 36 restored to its original state on one side of the electric vehicle 2 facing the safety footrest 36 ( 38); A distributor (47) formed of a solenoid valve connected to the ports (31) (32) of the journal (30) via respective hoses (45) (46) to diverge hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; A control unit 40 controlling the driving motor 41 to be driven as the door 3 of the electric vehicle 2 is opened and closed; In order to be controlled by the control unit 40 so that the safety device 10 is operated according to the door 3 of the electric vehicle 2 to be opened and closed, on one side of the electric vehicle 2 into which the door 3 to be opened is inserted. Safety sensor for getting on and off the electric vehicle, characterized in that made; including; a detection sensor (48) provided to detect the door (3) to be moved according to the opening and closing operation to output its detection signal to the control unit (40). Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device (10) includes a fixed shaft (20) provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2); A following protrusion 21 formed on one side of the outer circumferential surface of the fixed shaft 20 by curved in an arc shape to protrude. Rotatingly coupled on the outer circumferential surface of the fixed shaft 20, the end of the following protrusion 21 is in surface contact with one side of the inner circumferential surface, a plurality of ports 31, 32 are drilled on the outer circumferential surface and one side of the outer circumferential surface It includes a hollow journal (30) formed with a width that can cover the spaced space between the electric vehicle (2) and the platform (1), and a safety footrest 36 having a width at least larger than the door (3); One end of an inner circumferential surface of the journal 30, that is, an inner circumferential surface located between the ports 31 and 32, is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20, and thus on the outer circumferential surface of the fixed shaft 20. A protruding protrusion 33 having a stepped contact 33a formed to be in surface contact; Controls excessive rotation of the journal 30 and the safety scaffold 36 which are rotated on the fixed shaft 20 on both sides of the rotating protrusion 33 and is spaced apart between the rotating protrusion 33 and the following protrusion 21. The following protrusions are bent in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 with a length L equal to or longer than the diameter D1 of the ports 31 and 32 so as to secure a space therein. A locking protrusion 34 formed to protrude to be hooked to the 21; The safety scaffold 36 which is rotated together with the journal 30 is provided on one surface of the safety scaffold 36 facing the landing 1 so as to flexibly correspond to the height of the landing 1. A piezoelectric element 37 adapted to control the total amount; A switch configured to control rotation of the journal 30 and the safety footrest 36 while the contact is turned on or off by the safety footrest 36 restored to its original state on one side of the electric vehicle 2 facing the safety footrest 36 ( 38); The outer circumference of the fixed shaft 20 adjacent to the follower protrusion 21 so that the footrest 36 rotated by decelerating the initial and end rotation speeds of the safety footrest 36 smoothly contacts the electric vehicle 2 or the platform 1. A plurality of flow passages 22 formed on the surface and adjacent to the contact portion 33a of the rotating protrusion 33 in contact with the surface thereof, the recesses being configured to flow hydraulic pressure; A distributor (47) formed of a solenoid valve connected to the ports (31) (32) of the journal (30) via respective hoses (45) (46) to diverge hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; A control unit 40 controlling the driving motor 41 to be driven as the door 3 of the electric vehicle 2 is opened and closed; In order to be controlled by the control unit 40 so that the safety device 10 is operated according to the door 3 of the electric vehicle 2 to be opened and closed, on one side of the electric vehicle 2 into which the door 3 to be opened is inserted. Safety sensor for getting on and off the electric vehicle, characterized in that made; including; a detection sensor (48) provided to detect the door (3) to be moved according to the opening and closing operation to output its detection signal to the control unit (40). Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device (10) includes a fixed shaft (20) provided with both side ends fixed to the electric vehicle (2) so as to be spaced apart from the lower end of the door (3) of the electric vehicle (2); A following protrusion 21 formed on one side of the outer circumferential surface of the fixed shaft 20 by curved in an arc shape to protrude. Rotatingly coupled on the outer circumferential surface of the fixed shaft 20, the end of the following protrusion 21 is in surface contact with one side of the inner circumferential surface, a plurality of ports 31, 32 are drilled on the outer circumferential surface and one side of the outer circumferential surface It includes a hollow journal (30) formed with a width that can cover the spaced space between the electric vehicle (2) and the platform (1), and a safety footrest 36 having a width at least larger than the door (3); One end of an inner circumferential surface of the journal 30, that is, an inner circumferential surface located between the ports 31 and 32, is curved in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20, and thus on the outer circumferential surface of the fixed shaft 20. A protruding protrusion 33 having a stepped contact 33a formed to be in surface contact; Controls excessive rotation of the journal 30 and the safety scaffold 36 which are rotated on the fixed shaft 20 on both sides of the rotating protrusion 33 and is spaced apart between the rotating protrusion 33 and the following protrusion 21. The following protrusions are bent in an arc shape corresponding to the outer circumferential surface of the fixed shaft 20 with a length L equal to or longer than the diameter D1 of the ports 31 and 32 so as to secure a space therein. A locking protrusion 34 formed to protrude to be hooked to the 21; The safety scaffold 36 which is rotated together with the journal 30 is provided on one surface of the safety scaffold 36 facing the landing 1 so as to flexibly correspond to the height of the landing 1. A piezoelectric element 37 adapted to control the total amount; A switch configured to control rotation of the journal 30 and the safety footrest 36 while the contact is turned on or off by the safety footrest 36 restored to its original state on one side of the electric vehicle 2 facing the safety footrest 36 ( 38); Adjacent to the rotary protrusion 33, that is, the supply port 31 so that the footrest 36 rotated by decelerating the rotational speed of the safety footrest 36 at the beginning and the end thereof smoothly contact the electric vehicle 2 or the platform 1. A plurality of flow passages 35 formed on the inner circumferential surface of the journal 30 to be adjacent to each other with a wider width than the contact surface of the following protrusion 21 in contact therewith, the hydraulic passages flowing; A distributor (47) formed of a solenoid valve connected to the ports (31) (32) of the journal (30) via respective hoses (45) (46) to diverge hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; A control unit 40 controlling the driving motor 41 to be driven as the door 3 of the electric vehicle 2 is opened and closed; In order to be controlled by the control unit 40 so that the safety device 10 is operated according to the door 3 of the electric vehicle 2 to be opened and closed, on one side of the electric vehicle 2 into which the door 3 to be opened is inserted. Safety sensor for getting on and off the electric vehicle, characterized in that made; including; a detection sensor (48) provided to detect the door (3) to be moved according to the opening and closing operation to output its detection signal to the control unit (40). Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device 10 is provided with both side ends fixed to the electric vehicle 2 so as to be spaced apart from the lower end of the door 3 of the electric vehicle 2, one side of the discharge port (parallel to the axial direction and perpendicular to the axial direction ( A fixed shaft 120 having a plurality of ports 124 and 125 having 124a and 125a formed therein; A following protrusion 121 formed on one side of the outer circumferential surface of the fixed shaft 120, that is, one end surface thereof is curved in an arc shape on the outer circumferential surface between the two ports 124 and 125; Rotatingly coupled on the outer circumferential surface of the fixed shaft 120, the end of the following protrusion 121 is in surface contact with one side of the inner circumferential surface, one side of the outer circumferential surface to cover the space spaced between the electric vehicle (2) and the platform (1) A hollow journal 130 having a coverable area and a safety scaffold 133 having a width greater than at least the door 3; One end surface on one side of the inner peripheral surface of the journal 130 is curved in an arc shape corresponding to the outer peripheral surface of the fixed shaft 120 so as to project in surface contact with the outer peripheral surface of the fixed shaft 120. Rotating protrusion 131; Controls excessive rotation of the journal 130 and the safety scaffold 133 rotated on the fixed shaft 120 on both sides of the following protrusion 121, and is spaced apart between the rotating protrusion 131 and the driving protrusion 121. A circular arc corresponding to the inner circumferential surface of the journal 130 with a length L equal to or longer than the diameter D2 of the outlets 124a and 125a of the ports 124 and 125 (L ≧ D2) so as to secure a space therein. A curved protrusion 122 formed to protrude so as to be caught by the rotating protrusion 131. The safety scaffold 133 rotated with the journal 130 is provided on one surface of the safety scaffold 133 opposite to the landing 1 so as to flexibly correspond to the height of the landing 1. A piezoelectric element 134 configured to control the total amount; A switch configured to control rotation of the journal 130 and the safety scaffold 133 while the contact is turned on or off by the safety scaffold 133 restored to its original state on one side of the electric vehicle 2 facing the safety scaffold 133 ( 38); The discharge ports 124a and 125a of the ports 124 and 125 so that the footrest 133 rotated by decelerating the initial and end rotation speeds of the safety footrest 133 smoothly contact the electric vehicle 2 or the platform 1. A plurality of flow passages 123 formed on the outer circumferential surface of the fixed shaft 120 adjacent to each other and wider than the contact portion 131a of the rotating protrusion 131 adjacent thereto, and consequently so as to allow hydraulic pressure to flow therethrough; A distributor 47 formed of a solenoid valve connected to the ports 124 and 125 of the fixed shaft 120 through the respective hoses 45 and 46 so as to branch and supply hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; A control unit 40 controlling the driving motor 41 to be driven as the door 3 of the electric vehicle 2 is opened and closed; In order to be controlled by the control unit 40 so that the safety device 10 is operated according to the door 3 of the electric vehicle 2 to be opened and closed, on one side of the electric vehicle 2 into which the door 3 to be opened is inserted. Safety sensor for getting on and off the electric vehicle, characterized in that made; including; a detection sensor (48) provided to detect the door (3) to be moved according to the opening and closing operation to output its detection signal to the control unit (40). Safety is provided in the lower end of the door (3) of the electric vehicle (2) facing the platform (1), and rotated as the door (3) is opened and closed to eliminate the space spaced between the electric vehicle (2) and the platform (1) In the device 10, The safety device 10 is provided with both side ends fixed to the electric vehicle 2 so as to be spaced apart from the lower end of the door 3 of the electric vehicle 2, one side of the discharge port (parallel to the axial direction and perpendicular to the axial direction ( A fixed shaft 120 having a plurality of ports 124 and 125 having 124a and 125a formed therein; A following protrusion 121 formed on one side of the outer circumferential surface of the fixed shaft 120, that is, one end surface thereof is curved in an arc shape on the outer circumferential surface between the two ports 124 and 125; Rotatingly coupled on the outer circumferential surface of the fixed shaft 120, the end of the following protrusion 121 is in surface contact with one side of the inner circumferential surface, one side of the outer circumferential surface to cover the space spaced between the electric vehicle (2) and the platform (1) A hollow journal 130 having a coverable area and a safety scaffold 133 having a width greater than at least the door 3; One end surface on one side of the inner peripheral surface of the journal 130 is curved in an arc shape corresponding to the outer peripheral surface of the fixed shaft 120 so as to project in surface contact with the outer peripheral surface of the fixed shaft 120. Rotating protrusion 131; Controls excessive rotation of the journal 130 and the safety scaffold 133 rotated on the fixed shaft 120 on both sides of the following protrusion 121, and is spaced apart between the rotating protrusion 131 and the driving protrusion 121. A circular arc corresponding to the inner circumferential surface of the journal 130 with a length L equal to or longer than the diameter D2 of the outlets 124a and 125a of the ports 124 and 125 (L ≧ D2) so as to secure a space therein. A curved protrusion 122 formed to protrude to be caught by the rotating protrusion 131. The safety scaffold 133 rotated with the journal 130 is provided on one surface of the safety scaffold 133 opposite to the landing 1 so as to flexibly correspond to the height of the landing 1. A piezoelectric element 134 configured to control the total amount; A switch configured to control rotation of the journal 130 and the safety scaffold 133 while the contact is turned on or off by the safety scaffold 133 restored to its original state on one side of the electric vehicle 2 facing the safety scaffold 133 ( 38); The supply port 124 is adjacent to the rotating protrusion 131 so that the footrest 133 rotated by decelerating the initial and end of the safety footrest 133 smoothly contacts the electric vehicle 2 or the platform 1. A plurality of flow passages 132 formed on the inner circumferential surface of the journal 130 on the side and having a width wider than the contact surface of the following protrusion 121 in contact therewith, the hydraulic passages being flown; A distributor 47 formed of a solenoid valve connected to the ports 124 and 125 of the fixed shaft 120 through the respective hoses 45 and 46 so as to branch and supply hydraulic pressure; A hydraulic pump (42) provided to feed and supply hydraulic pressure from a hydraulic source to the distributor (47); A drive motor 41 provided to drive the hydraulic pump 42; A control unit 40 controlling the driving motor 41 to be driven as the door 3 of the electric vehicle 2 is opened and closed; In order to be controlled by the control unit 40 so that the safety device 10 is operated according to the door 3 of the electric vehicle 2 to be opened and closed, on one side of the electric vehicle 2 into which the door 3 to be opened is inserted. Safety sensor for getting on and off the electric vehicle, characterized in that made; including; a detection sensor (48) provided to detect the door (3) to be moved according to the opening and closing operation to output its detection signal to the control unit (40).