KR101545972B1 - Sliding Step Device of Electric Rail Car - Google Patents

Abstract

The present invention relates to a sliding step device for an electric vehicle. The present invention comprises a housing installed in a lower part of a body of an electric vehicle and having a space part formed inside; a step footrest placed in the housing to fill a gap between a side wall of a platform and the body of the vehicle by moving forward and backward from a side of the body to the platform; a motor integrated with a side of the step footrest and including a spur gear in a rotary shaft; a rack gear combined with the spur gear and installed in the space part of the housing in a platform direction; and a step control unit controlling the operating motor. According to the present invention, the sliding step device is installed in the electric vehicle to fill the gap with a side of the platform when being stopped at the platform, and therefore, the old and weak are able to safely take on and off the electric vehicle. Moreover, even when the height of the platform is different, a gap between the electric vehicle and an end part of the platform is able to be filled. Especially, the present invention is capable of protecting the operating motor from leakage by integrating the step footrest with the operating motor, and obtaining the operational stability of an aluminum rail structure step while supporting the step footrest by applying both rollers. Moreover, as the operation of the step footrest is controlled when the weight of a passenger is sensed, the passenger is able to safely take on the electric vehicle.

Description

Technical Field [0001] The present invention relates to a sliding step device for a railway train,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sliding step device which is provided under a door of a motor vehicle and moves forward and backward in a platform direction to fill a space between a vehicle body and a platform of a train. More particularly, The present invention relates to a sliding step device for a railway train, which can secure the driving stability of the step footrest and which can be operated in a corresponding manner, since the height of the platform is not the same for every history.

Generally, an electric train is a means of traveling on a railway line such as a subway or a train, and each vehicle is provided with a door at a predetermined interval and both sides thereof are opened and closed automatically when the passengers get on and off.

As described above, the electric vehicle is provided with a platform for passengers to enter and exit on both sides of the line on which the electric vehicle travels, or on one of the lines, in order to get on and off the passenger.

At this time, the doors of the train arriving at the platform are opened so that the passengers stray or fall down at the interval between the platform and the train when the passengers get on and off.

Particularly, the platform is constructed in such a manner that the platform is constructed in a straight line or a curved line in which the train moves.

Therefore, in the case of a curved platform, the gap between the curved platform and the train is larger, so that the wheelchair is difficult to move when the children of the wheelchair or the like get on and off the train, There are occasions occasionally.

Of course, in order to solve such a problem, the present applicant has proposed Registration No. 10-0904714. The present invention relates to a safety step device for a railway vehicle, and more particularly, to a safety step device for a railway vehicle, which comprises a step member provided at a lower portion of a door of a railway vehicle body to advance and retreat in a direction of a landing, A propulsion unit for advancing and retracting the step member in the direction of the landing end according to a control signal of the control unit; A forward sensing means for sensing a sensing signal to stop the operation of the propelling means to the control unit when the step member advances toward the landing end side and approaches the landing end; And a rear sensing means for sensing the sensing signal to stop the operation of the propelling means when the step member is moved back to the vehicle body, wherein the control unit transmits a step control signal from the vehicle control device of the railway car through the interface unit The control means controls the propulsion means, and the vehicle control device transmits a step control signal to the control portion for advancing the step member before the door is opened after the railway vehicle stops at the platform, and after the door of the railway car is closed, And transmits a step control signal for moving the step member back to the control unit.

However, according to the structure, due to the structure in which the motor is installed in the lower part of the doorway, rainwater or various impurities can easily flow into the railway vehicle during running, which may cause burning. In addition, when a passenger pushes his or her foot while the staff member is moving forward, there is a possibility of failure, and there is a problem that it is difficult to appropriately cope with the situation even if the boarding status of passengers and the height of the platform vary greatly.

Reference 1: Registration No. 10-0904714

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a slide step device for a railway vehicle capable of protecting a drive motor according to leakage by integrating a step foot pedal and a motor, It has its purpose.

It is another object of the present invention to provide a sliding step apparatus for a railway vehicle which can be operated in a manner corresponding to the boarding status of passengers or the height of platforms different from each other.

In order to solve such a technical problem,

A step footrest provided in the housing to fill the gap between the vehicle body of the electric train and the side wall of the platform, which is provided in the lower portion of the body of the electric train and has a space formed therein, A rack gear fixed to the space of the housing in a platform direction and engaged with the spur gear, and a step of controlling the driving of the driving motor And a control means for controlling the operation of the sliding step device.

In this case, the housing has a structure in which a rack gear is fitted to the spur gear in a direction in which the entrance and exit of the step foot plate are formed.

Further, a cover which can be opened and closed is provided on the upper side of the housing.

The step control means stops the driving of the driving motor when the current value of the driving motor sensed by the current sensing unit exceeds the current value at the time of normal driving when the tip end of the step foot is brought into contact with the side wall of the platform .

Further, a foldable stopper is hingedly coupled to the distal end of the step foot.

In addition, the space portion of the housing further includes position sensing means for sensing the maximum protrusion of the step foot, and a weight sensing means for stopping the operation of the driving motor by the weight when the passenger steps on the step foot, And the control means monitors the position sensing means and the weight sensing means.

The position sensing means may include a maximum protrusion sensing limit switch for sensing a maximum protrusion state of the step foot plate and a limit switch for sensing a maximum entry state of the step foot plate, And stops driving of the drive motor when a signal is inputted from the sensing means.

Further, the step control means stops the step foot by driving the motor brake to prevent the drive motor from being operated or freely rotating in the state where the step foot is advanced or protruded or drawn.

The step foot plate is made of aluminum, and rollers are provided on both sides of the step foot plate for driving stability of the step foot plate.

The step control means controls normal and reverse rotation of the drive motor when a control signal is inputted from a door control means for controlling the opening and closing of the door.

According to the present invention, there is an advantage that the elderly people can conveniently and safely get on and off a train by installing on a train and filling the gap with the side of the platform when the platform is stopped. Also, even if the platform height is different, the gap between the end of the platform and the body of the electric vehicle can be filled.

Particularly, the present invention can protect the driving motor according to the leakage by developing the step footrest and the driving motor which are the main driving parts integrally, and can support the step foot support by applying both rollers and obtain the driving stability of the aluminum rail structural step.

Further, when the load of the passenger is detected, the operation of the step footrest is controlled so that the passenger can get on and off the train safely.

1 is an overall configuration diagram of a sliding step apparatus for a railway vehicle according to the present invention.
FIG. 2 is an installation state diagram of a sliding step device for a railway vehicle according to the present invention.
3 is a main configuration diagram of a sliding step apparatus for a railway vehicle according to the present invention.
4 is a view illustrating a state in which the sliding step device for a railway vehicle according to the present invention is installed on a roller.
5 is an installation state diagram of step control means according to the present invention.
6 is a control block diagram of a sliding step apparatus for a railway vehicle according to the present invention.
7 is a view showing a state before and after operation of a step foot for a train according to the present invention.
8 is a control flowchart of the sliding step apparatus for a railway vehicle according to the present invention.
FIG. 9 is a table showing a correspondence example of the sliding step device for a railway train according to the present invention in accordance with the length of the road.

The characteristics of the sliding step device for a railway vehicle according to the present invention will be understood by referring to the attached drawings.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

1 to 7, the sliding step device for a railway vehicle according to the present invention is installed under the vehicle body 10 of the electric vehicle 1.

The slide stepping device 100 for a railway vehicle is provided to prevent a passenger from falling down in a place where the distance between the platform 2 and the electric railway vehicle 1 is wide. So that the sliding operation is performed in conjunction with the door system.

More specifically, when the electric motor vehicle 1 arrives at the platform 2 and stops, there is a certain distance between the side wall 20 of the platform 2 and the door 12 for the entrance of the vehicle body 10 of the electric vehicle 1 The sliding step device 100 for a railway vehicle according to the present invention is installed on the lower portion of the vehicle body 10, more specifically, on the lower side of the door 12 in order to solve the gap .

The sliding step device 100 for a railway vehicle according to the present invention has a modular structure including a housing 110 installed at a lower portion of a vehicle body and having a space portion 111 formed therein, A step foot pedestal 120 which is moved forward and backward in the direction of the platform 2 from the side of the vehicle body 10 to fill the gap between the vehicle body 10 and the platform side wall 20 of the electric train 1, A driving motor 130 fixed to one side of the housing 110 and having a spur gear 132 and a spur gear 132 mounted on the spur gear 132 and installed in the space of the housing 110 in the direction of the platform 2 A position sensing means 140 for sensing a maximum protrusion and a pulling in of the step foot 120 and a rack gear 134 for monitoring a maximum entry and exit detection signal of the position sensing means 140, And a step control means 150 for controlling the driving of the motor 130.

Hereinafter, the constituent parts of the present invention will be described in more detail.

One stepping motor 120 is provided with a driving motor 130. A rack gear 134 is mounted on the rotating shaft of the driving motor and fixed to the bottom of the space of the housing 110 by a spur gear 132 And the spur gear 132 and the rack gear 134 are engaged with each other.

Of course, the spur gear 132 functions as a pinion gear. The step foot 120 is protruded or drawn in the direction of the platform 2 from the side of the vehicle body 10 along the rack gear 134 when the driving motor 130 rotates in the normal or reverse direction.

At this time, the housing 110 is formed with an entrance 113 through which the step foot 120 can move in and out, and a rack gear 134 is assembled in the direction of the entrance 113.

A step control unit 150 is installed in the space part 111 of the housing 110 to monitor the position sensing unit 140 and control the driving motor 130. In this case, the drive motor 130 installed in the step foot 120 is provided with a cable bearing 135 to prevent breakage of the electric wire due to frequent entry and exit of the step foot.

A cover 118 is provided on the upper side of the housing 110 so that the inside of the housing can be easily checked and repaired when the cover 118 is detached from the cabin of the train.

At this time, since a direct passenger load may be applied to the cover 118, a reinforcing member 119 capable of supporting the cover 118 is installed across the space portion of the housing 110.

The tip end of the step foot 120 is operated at a lower position than the platform 2. When the tip end of the step foot 120 contacts the side wall of the platform 2, When the current value of the motor 130 exceeds the current value at the time of normal driving, the step control means 150 stops the driving of the driving motor 130. [

At this time, in order to reduce the time when the floor of the cabin of the vehicle body 10 is higher than the platform 2, a stopper 122 protrudes from the front end of the step footrest 120, So that smooth contact can be achieved.

In this case, the step footrest 120 is preferably made of a lightweight aluminum material to reduce the load of the driving motor 130 when moving back and forth. The stopper 122 is hinged to the front end of the step foot 120 so that when the step foot 120 is moved forward, the stop 122 is rotated at right angles to the end of the step foot 120 When the step foot 120 is retracted, the stopper 122 provided at the end of the step foot 120 is straightened and enters the entrance of the housing 110.

The maximum step detection limit switch 142 and the maximum lead limit switch 144 are applied to the stepping pedal 120 by the position sensing means 140 for sensing the maximum protrusion and the pulling in of the stepping step 120 do.

Therefore, when the step footrest 120 advances and the contact with the side surface of the platform 2 is not made, the drive of the drive motor is stopped at the time of input of the limit pushing limit switch 142, When the stepping foot 120 is retracted and enters the housing 110, the driving of the driving motor 130 is stopped when a signal of the limit input limit switch 144 is inputted, 120 are fully inserted.

A microswitch, which is a weight sensing means 146, is further provided on the lower portion of the step foot 120 so that the passenger can stop the operation of the driving motor 130 by pressing the step foot 120.

With this structure, the drive motor 130 can be stopped even when the step foot plate 120 is not completely drawn in or out, thereby enabling stable operation of the sliding step device 100 for a railway vehicle. In this case, the stepping foot 120 is stopped by driving the motor brake 138 for forcibly stopping the rotation of the motor, thereby improving the stability of the stepping device.

If it is determined that a load is generated due to the sensing signal of the microswitch, which is the weight sensing means 146, the step footrest 120 rotates about the rotation axis of the driving motor 130 and sinks.

In this case, when a predetermined height (for example, about 6 mm) is detected, the current value inputted to the driving motor 130 through the current sensing unit 136 is sensed and recognized as a failure, and the operation of the stepped stool 120 is stopped. Of course, it is preferable that the limit of the load is limited by the supporting force of the leaf spring provided on both sides of the bottom of the step foot.

On the other hand, in order to prevent the drive motor 130 from being operated or freely rotating in the state where the step foot 120 is in the protruded state or in the drawn state, the motor brake 138 is driven to move the step foot 120, The stopping prevention and locking function is implemented to improve the stability of the step device.

In order to protect the drive motor 130 against water leakage, the step foot 120 and the drive motor 130 are integrally formed. The step foot 120 is made of aluminum, Rollers 115 are provided on both sides of the step foot 120 for driving stability so that the step foot 120 is smoothly moved in the forward and backward directions of the step foot 120 in the inner space 111 of the housing 110. [ .

The step control unit 150 controls one or more peripheral devices, and analyzes a signal and controls each device by loading a series of program commands stored in the memory.

Hereinafter, the operation of the sliding step apparatus for a railway vehicle according to the present invention will be described with reference to FIGS. 1 to 9. FIG.

When the electric vehicle enters the platform 2 and stops at the predetermined position (S100), the electric motor vehicle 1 driven by the control and monitoring of the vehicle control device 200 controlling the operation of the electric vehicle arrives at the platform 2 The vehicle control apparatus 200 generates a door opening signal for opening the door and the door opening signal is input to the door control means 300 for controlling opening and closing of the door.

The door control means 300 controls the driving motor 130 by applying a control signal to the step control means 150 for controlling the forward and backward movement of the step foot pedal 120 to move the step foot pedal 120 to the platform 2 (Step S104). When the front end of the step foot 120 contacts the side surface of the platform 2, the current sensed by the current sensing part 136 rises and exceeds the set value. , The step foot pedestal 120 determines that the protrusion is completed and generates a foot protrusion completion signal and transmits it to the door control means 300. In step S106,

The door control means 300 opens the door 12 and transmits a door opening completion signal to the vehicle control device 200. In operation S108,

When the door is opened in step S108, the passenger is allowed to get on and off at step S110. After a predetermined time (for example, 10 seconds) has elapsed, the vehicle control device 200 controls the door control unit 300 The door 12 is closed by transmitting a closing signal (S112)

The door control means 300 applies a control signal to the step control means 150 and the step control means 150 controls the drive motor 130 to control the step foot 120 The step control unit 150 stops driving the drive motor 130 and stops the stepping motor 120 when the input of the limit stepping motor 120 is stopped The control unit 300 generates a footstep entry completion signal and transmits the footstep entry completion signal to the door control unit 300. (S116)

If the step S116 is performed and the step-up completion signal is input to the door control unit 300, the door control unit 300 transmits a door close completion signal to the vehicle control unit 200. In step S118,

Accordingly, the vehicle control apparatus 200 judges that the door is closed and advances the train from the platform 2 (S120)

That is, by performing the above-described steps S100 to S120, the step device is operated in cooperation with the door 12 of the electric train, and the step foot 120 is operated before the door 12 is opened, Safety of passengers can be protected with top priority.

Of course, while the step control means 150 has been described as performing data communication with the door control means 300, it may be designed to perform direct data communication with the vehicle control device 200 as required, It should be understood by those skilled in the art that they are all within the scope of the present invention.

On the other hand, in the step S104, when the step foot is protruded, it is necessary to control the step foot 120 in various ways according to the boarding state of the passenger, the height difference between the landing and the cabin, and the distance between the electric vehicle and the landing platform. That is, generally, when the step foot 120 is operated, when the tip end of the step foot 120 comes into contact with the side of the platform, the operation stops.

However, since the height of the platform is not the same for each history, the stopper 122 is hinged to the hinge pin 122a at the lower end of the stepped stool 120 in preparation for a situation in which the height of the platform 2 is considerably lower than the floor of the room. The stopper 122 abuts against the side wall of the platform to limit the full protrusion when a height difference of, for example, 70 mm or less is generated between the height of the platform 2 and the floor of the cabin of the electric vehicle, (2) In a place where a height difference of, for example, 70 mm or more occurs, the step foot plate 120 is completely projected.

This can be solved through the control according to the platform corresponding manual of the step foot step shown in the table of FIG.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The scope of protection of the present invention should be construed under the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

1: Train 2: Platform
10: Body 12: Door
100: Step device 110: Housing
120: step foot plate 130: drive motor
140: Position sensing means 150: Step control means
200: vehicle control device 300: door control means

Claims (10)

A housing installed in a lower portion of the vehicle body of the electric motor vehicle and having a space portion formed therein,
A cover which is openable and closable above the housing,
A reinforcing member provided across the space of the housing to support the cover,
A step foot plate provided inside the housing to advance and retract in a platform direction from a side surface of the vehicle body to fill an interval between the vehicle body of the electric vehicle and the platform side wall,
A stopper hinged to the tip end of the step foot so as to be foldable,
A drive motor which is integrally fixed to one side of the step foot and has a spur gear on the rotation shaft,
A cable bearing connected to the drive motor,
A rack gear engaged with the spur gear and installed in a space of the housing in a platform direction,
A step control means for controlling the drive of the drive motor,
A position sensing means installed in the space of the housing for sensing the maximum protrusion of the step foot,
And a weight sensing means installed in the space of the housing to stop the operation of the driving motor by the weight when the passenger steps on the step foot,
Wherein the step control means controls normal and reverse rotation of the drive motor when a control signal is inputted from a door control means for controlling the opening and closing of the door and stops driving of the drive motor upon input of a signal from the position sensing means, When the front end of the step foot or the stopper is contacted and the current value of the driving motor sensed by the current sensing unit exceeds the current value at the time of normal driving, the driving of the driving motor is stopped, and when it is judged that the load is generated due to the sensing signal of the weight sensing means Wherein the step footrest is stopped by driving the motor brake to prevent the drive motor from being operated or freely rotating in a state in which the step footrest advances and protrudes or is pulled in.
The method according to claim 1,
Wherein the housing is a structure in which a rack gear is assembled on a front surface of the stepping plate so as to engage with the spur gear in a direction of an entrance of the stepping plate.
delete delete delete delete delete delete The method according to claim 1,
Wherein the step foot plate is made of an aluminum material and a roller is provided on both sides of the step foot plate for driving stability of the step foot plate and a leaf spring for supporting a load is provided on both sides of the bottom of the step foot plate. Sliding step device.

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