JP2019194048A - Platform door - Google Patents

Abstract

To provide a platform door which prevents a passenger from dropping from a platform onto a track or contacting with a train approaching on an incoming line and is inexpensive at installation cost.SOLUTION: This platform door 1 comprises a pair of left and right fixed poles 2, 2 erected on a platform 7 of, for example, a railway, movable poles 3, 3 that can shift up and down in a condition supported by the fixed poles 2, 2 respectively, drive mechanisms 4, 4 making the movable poles 3, 3 shift up and down and a door body 5 freely moving telescopically in a vertical direction. An upper side end of the door body 5 is fixed to an upper part of the movable pole 3 and when a passage to a railway vehicle is closed, the movable pole 3 falls, a lower side end of the body 5 moves downward and the body 5 is in a stretched state and when the passage to the vehicle is open, the movable pole 3 shifts up, the lower side end of the body 5 moves upward and the door body 5 is in a compressed state.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a platform door installed on, for example, a railway platform.

  In the railway platform (hereinafter sometimes referred to as “home”), in recent years, in order to prevent passengers from falling from the platform to the track or coming into contact with the train that has entered the platform, It is being established. Conventionally, there are various types and structures as home doors. For example, as disclosed in Patent Document 1, there is a protective wall type in which a laterally open home door is installed at a position corresponding to a passenger door of a train stopped at a platform and has a waist height. In this case, since the door pocket which accommodates the side opening part of a home door is required, the opening width | variety of a door is comparatively small and will narrow a passenger's entrance. Moreover, when the position of the boarding / alighting door of a train differs, there existed a subject that it was difficult to make the position of a platform door correspond, and that installation cost was expensive.

  Further, as in Patent Document 2, a gate-shaped gate frame that is erected so as to face a door near a side edge of the platform facing a door of a train that has arrived on a railway platform, and is disposed inside the gate frame. There is a home door having a partition material having a fixed shape such as a welded wire mesh, a tempered glass plate with a wire mesh, and a motor-driven lift mechanism for moving the partition material up and down. In this case, no door pocket is required on the gate frame, so the opening width of the door is relatively large, the passenger's entrance is widened, and the position of the platform door is compatible even when the position of the entrance door of the train is different. However, the gate-shaped gate frame was in the way, causing a new problem that the visibility from train drivers and conductors was poor.

  Furthermore, as in Patent Document 3, the storage internal space, the upper end opening, the fixed portion having the rope insertion portion, and the storage internal space of the fixed portion are stored, and the rope insertion portion is used to form a home edge. There is a platform door that includes an elevating unit that moves up and down through the upper end opening while supporting a rope arranged along the rope, and a drive unit that is provided in the fixed unit and elevates and lowers the elevating unit. In this case, since there is no gate-shaped gate frame as in Patent Document 2, it is described that visibility from a train driver or a conductor is improved.

  However, in Patent Document 3, since the gap between the upper and lower ropes is large and spreads to the left and right, the appearance may seem uneasy. In addition, since the rope is easily bent, the distance between the rope and the platform and the distance between the ropes are intentionally or unintentionally widened, preventing the user from falling from the platform to the track or coming into contact with the train that has entered the line. There was a risk that it would be difficult to achieve the original purpose of doing.

  The present invention has been made in view of the above circumstances, and the purpose of the present invention is to provide a sense of security in appearance and to allow a customer to fall from a platform to a track or to contact a train that has entered the line. It is to provide a home door that can be reliably prevented and installation cost is low.

  The present invention is a home door provided with a fixed column erected on a railway platform, a movable column that is movable up and down while supported by the fixed column, and a drive mechanism that moves the movable column up and down. A door body that is vertically extendable, and an upper end side of the door body is fixed to an upper portion of the movable column, and when the passage to the vehicle is closed, the movable column is lowered, and a lower end side of the door body is The door main body moves downward to be in an extended state, and when the passage to the vehicle is opened, the movable column rises, and the lower end side of the door main body moves upward to cause the door main body to be in a compressed state. It is what.

  According to the present invention, there is provided a platform door including a fixed column erected on a railway platform, a movable column that can be moved up and down while being supported by the fixed column, and a drive mechanism that moves the movable column up and down. And since the door main body which can be expanded-contracted to an up-down direction is provided, the door pocket like patent document 1 is unnecessary. For this reason, the opening width of the door is relatively large, the passenger entrance is widened, and even when the position of the entrance / exit door of the train is different, the position of the platform door can be easily matched and the installation cost is also low. It is. Moreover, since there is no gate-shaped gate frame like patent document 2, the visibility from the driver and conductor of a train improves.

  In addition, a door body that is vertically extendable is provided, and an upper end side of the door body is fixed to an upper portion of the movable column. When the passage to the vehicle is closed, the movable column is lowered, and a lower end of the door body The side moves downward and the door body is extended, and when the passage to the vehicle is opened, the movable column rises, and the lower end side of the door body moves upward and the door body becomes compressed. The rope which is easy to bend like patent document 3 is not used. For this reason, the gap between the door bodies is reduced, giving a sense of security in appearance, and the distance between the rope and the platform and the distance between the ropes may be deliberately or accidentally pushed, so that the user can move from the platform to the track. Can be reliably prevented from falling into or coming into contact with a train that has entered the line.

  As in the invention described in claim 2, it is preferable that the door body is formed by connecting a plurality of horizontal frames in a vertically expandable and contractible manner by a pantograph mechanism.

  According to invention of Claim 2, since the said door main body connects the some horizontal frame so that it can expand-contract vertically by a pantograph mechanism, a door main body can be expanded-contracted reliably.

  Preferably, the drive mechanism is a ball screw type drive mechanism.

  According to a third aspect of the present invention, the drive mechanism is a ball screw type drive mechanism. Therefore, by minimizing the width of the fixed pillar in which the drive mechanism is installed, the door opening width is increased and the fixed width is fixed. The movable column can be reliably raised and lowered while being supported by the column. In addition, even when the drive source is stopped, the elevating position of the elevating column can be maintained, and safety can be ensured.

  As in the fourth aspect of the invention, it is preferable that the operation on the lower end side of the door main body is based on the principle of a moving pulley.

  According to the fourth aspect of the present invention, the operation on the lower end side of the door main body utilizes the principle of a moving pulley, so that the structure is simple. As a result, the maintenance is easy and it becomes difficult to break down, and the cost can be greatly reduced.

  It is preferable to provide a guide for restricting the inclination of the movable column with respect to the fixed column.

  According to the fifth aspect of the present invention, since the guide for restricting the inclination of the movable column with respect to the fixed column is provided, the inclination of the movable column can be reduced to ensure a smooth operation.

  Preferably, the drive mechanism is provided on the left and right sides of the door body.

  According to the invention described in claim 6, since the drive mechanism is provided on the left and right sides of the door body, it is possible to cope with only one of them in the event of a failure, and the reliability is greatly improved. To do.

  According to the present invention, there is provided a platform door including a fixed column erected on a railway platform, a movable column that can be moved up and down while being supported by the fixed column, and a drive mechanism that moves the movable column up and down. And since the door main body which can be expanded-contracted to an up-down direction is provided, the door pocket like patent document 1 is unnecessary. For this reason, the opening width of the door becomes relatively large, the passenger's entrance widens, and even when the position of the entrance / exit door of the train is different, the position of the platform door can be easily matched and the installation cost is also low. . Moreover, since there is no gate-shaped gate frame like patent document 2, the visibility from the driver and conductor of a train improves.

  In addition, a door body that is vertically extendable is provided, and an upper end side of the door body is fixed to an upper portion of the movable column. When the passage to the vehicle is closed, the movable column is lowered, and a lower end of the door body The side moves downward and the door body is extended, and when the passage to the vehicle is opened, the movable column rises, and the lower end side of the door body moves upward and the door body becomes compressed. The rope which is easy to bend like patent document 3 is not used. For this reason, the gap between the door bodies is reduced, giving a sense of security in appearance, and the distance between the rope and the platform and the distance between the ropes may be deliberately or accidentally pushed, so that the user can move from the platform to the track. Can be reliably prevented from falling into or coming into contact with a train that has entered the line.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram of the platform door which concerns on one Embodiment of this invention, Comprising: (a) is a front view, (b) is a left view, (c) is the X partial enlarged view in (a). It is principle explanatory drawing of the platform door which concerns on this embodiment, Comprising: (a) shows the time of closing, (b) shows the time of opening. It is operation | movement explanatory drawing of the platform door which concerns on this embodiment, Comprising: (a) shows the time of closing, (b) shows the time of opening.

  FIG. 1 is an overall configuration diagram of a platform door 1 according to an embodiment of the present invention, where (a) is a front view, (b) is a left side view, and (c) is a view taken in the direction of arrow X in (a). It is. Hereinafter, the front means the side not facing the track of the home door 1, and the back means the side facing the track of the home door 1. In addition, when there are a plurality of the same elements, the description may be made by representing one of them.

  As shown in FIGS. 1 (a) and 1 (b), the platform door 1 is supported by, for example, a pair of left and right fixed columns 2 and 2, and a fixed column 2 and 2, respectively, standing on a platform 7 of a railway station. The movable columns 3 and 3 that can be moved up and down in the state of being moved, the drive mechanisms 4 and 4 that move the movable columns 3 and 3 up and down, and the door body 5 that can expand and contract in the vertical direction are provided. As the material of the main part of the home door 1, a steel material having strength is used for the fixed columns 2, 2, the movable columns 3, 3, etc., and a lightweight aluminum material is used for the door body 5, etc. in use.

  As shown in FIG. 1 (c), the door body 5 can be expanded and contracted vertically by a plurality of pantograph mechanisms 51a, 50,... Connected. The pantograph mechanism 51a can be expanded and contracted by combining a plurality of right up and down right inclined links 52, 52,... 53, 53,. It is comprised as follows. For this reason, the intersection 54 of the links 52 and 53 is pin-coupled and freely rotatable, and the intersections 55 and 56 between the links 52 and 53 and the horizontal frame 51 are pin-coupled and the pins are horizontally connected. By moving in the long hole of the frame 51, the frame 51 is rotatable and slidable in the longitudinal direction of the horizontal frame 51. Accordingly, the horizontal frames 51, 51,... Can be distributed simultaneously and evenly in the vertical direction.

  The drive mechanism 4 is a ball screw type drive mechanism provided in the left and right fixed columns 2, and includes a motor 41 as a drive source, a vertical screw shaft 42 driven by the motor 41, and a screw on the screw shaft. It is composed of a combined nut 43 and the like. Here, an unillustrated ball rolls between the screw shaft 42 and the nut 43 and converts the rotational motion of the motor 41 into the linear motion of the nut 43 screwed to the screw shaft 42. The ascending / descending speed of the movable column 3 fixed to the nut 43 is reduced. Further, by minimizing the width of the fixed column 2 in which the drive mechanism 4 is provided, the door opening width is increased, and the movable column 3 can be reliably raised and lowered while being supported by the fixed column 2. . Furthermore, even when the motor 41 is stopped, the elevating position of the elevating column 3 can be maintained, and safety can be ensured.

  The left and right upper ends of the door body 5 are fixed to the upper portions of the movable columns 3 and 3. When the passage to the vehicle is closed, the movable columns 3 and 3 are lowered and the left and right lower ends of the door body 5 are moved downward. The door main body 5 is in an extended state, and when the passage to the vehicle is opened, the movable columns 3 and 3 are raised, and the left and right lower ends of the door main body 5 are moved upward so that the door main body 5 is in a compressed state. ing.

  2A and 2B are explanatory views of the principle of the platform door 1 according to the present embodiment. FIG. 2A shows a closed state and FIG. 2B shows an opened state. A sprocket 45 and a chain 46 are provided for the expansion and contraction of the door body 5, but here the principle of the moving pulley is used, in which the rope moves twice as fast as the moving pulley. is there. For convenience of explanation, the chain 46 is indicated by a bold line. That is, as shown in FIGS. 2A and 2B, the upper end side A of the door body 5 is fixed to the upper part A of the movable column 3, and the lower end side B is fixed to one end side B of the chain 46. . The other end C of the chain 46 is fixed to the bottom C of the fixed column 2. When the movable column 3 rises, the sprocket 45 as if it was a moving pulley rises at the same speed, but the one end B of the chain 46 as if it was a rope ascends at double speed. As a result, a simple configuration is achieved, and one of the left and right chains 46 can be broken, so that in the event of a failure, only the other can cope with it, and the reliability is greatly improved.

  Further, if the inclination of the movable column 3 that moves up and down from the fixed column 2 becomes large, the lifting operation is hindered, and consequently, the expansion and contraction operation of the door body 5 may be hindered. For this purpose, a guide 44 is provided here for regulating the inclination of the movable column 3 with respect to the fixed column 2 that expands and contracts. That is, as shown in FIG. 1A, a support post 44a is provided in the fixed post 2, and a plurality of pads 44b, 44b,... A plurality of movable pillars 3 that are moved up and down are always in contact with the pads 44b, 44b,... So that the inclination of the movable pillar 3 is regulated at any stage during the raising and lowering. Thereby, the inclination of the movable column 3 can be reduced and a smooth operation can be ensured. Further, at a suitable position on the side surface of the fixed column 2, a U-shaped cut that allows the left and right ends of the horizontal frames 51, 51,... Of the door body 5 to expand and contract in the vertical direction as the movable column 3 moves up and down. A notch 47 is formed.

  As shown in FIG. 1B, a plurality of sensors 6, 6,..., Which are photo interrupters, for example, are provided on the back side of the fixed column 2. Sensors 6, 6,... Sense a person passing through the home door 1 so that the door body 5 does not interfere with the person. Further, sensors 6, 6,... Prevent humans from being confined on the back side of the home door 1. In addition, an unillustrated sensor or the like senses arrival and departure of a train to automatically open and close the platform door 1 and can be switched to manual in an emergency.

  FIG. 3 is an explanatory view of the operation of the platform door 1 according to the present embodiment, wherein (a) shows a closed state and (b) shows an opened state. Hereinafter, an operation example of the home door 1 will be described. Initially, as shown in FIG. 3A, it is assumed that the entire movable column 3 is fully contained in the fixed column 2 and that the door body 5 is extended and closed.

  It is assumed that the train arrives soon due to the arrival signal of the train. At this time, the motor 41 of the drive mechanism 4 rotates to rotate the screw shaft 42. Then, the nut 43 screwed to the screw shaft 42 is lifted, and the movable column 3 fixed to the nut 43 is lifted while being supported by the guide 44 in the fixed column 2.

  Then, since the upper end side A of the door body 5 is fixed to the upper part A of the movable column 3, it rises together with the movable column 3. The lower end side B of the door body 5 is fixed to one end side B of the chain 46, and the other end side C of the chain 46 is fixed to the bottom C of the fixed column 2 via the sprocket 45. Accordingly, as the sprocket 45 fixed to the movable column 3 rises, the lower end side B of the door body 5 rises at a double speed, so that the door body 5 is in a compressed state. More specifically, the central portions of the inclined links 52 and 53 of the pantograph mechanism 51a rotate around the intersection 54, and the left and right ends rotate around the intersections 55 and 56 while being separated from each other, thereby the inclined links 52, Since the inclination of 53 becomes gentle, the space | interval of the horizontal frame 51 narrows simultaneously and equally. When the movable column 3 reaches the highest position, the home door 1 is fully opened.

  At this time, as shown in FIG. 3A, the movable column 3 is approaching from the fixed column 2, and the door main body 5 is compressed and opened. And while the sensor 6 senses a person, it is in the locked state. Thereby, interference and confinement with the human being by the platform door 1 are prevented.

  It is assumed that the train departs soon due to the train departure signal. At this time, the motor 41 of the drive mechanism 4 rotates in the reverse direction to rotate the screw shaft 42 in the reverse direction. Then, the nut 43 screwed to the screw shaft 42 is lowered, and the movable column 3 fixed to the nut 43 is lowered while being supported by the guide 44 in the fixed column 2.

  Then, since the upper end side A of the door body 5 is fixed to the upper part A of the movable column 3, the door body 5 descends together with the movable column 3. The lower end side B of the door body 5 is fixed to one end side B of the chain 46, and the other end side C of the chain 46 is fixed to the bottom C of the fixed column 2 via the sprocket 45. Therefore, as the sprocket 45 fixed to the movable column 3 descends, the lower end side B of the door body 5 descends at double speed, so that the door body 5 is in an extended state. Specifically, the center portions of the inclined links 52 and 53 of the pantograph mechanism 51a rotate around the intersection point 54, and the left and right end portions rotate around the intersection points 55 and 56 so as to come close to each other. Since the inclination of 53 becomes steep, the interval of the horizontal frames 51 is spread simultaneously and evenly. When the movable column 3 reaches the lowest position, the home door 1 is fully closed. At this time, the original closing time as shown in FIG. Thereafter, the closing and opening are repeated.

  As described above, the home door 1 includes the fixed column 2 installed on the railway platform 7, the movable column 3 that can be moved up and down while being supported by the fixed column 2, and the movable column 3 that moves up and down. Since the door mechanism 5 is provided with a drive mechanism 4 that can be expanded and contracted in the vertical direction, a door pocket as in Patent Document 1 is not required, so the door opening width is relatively large. Thus, even when the passenger's entrance is widened and the position of the entrance / exit door of the train is different, the position of the platform door 1 can be easily matched and the installation cost is low. Moreover, since there is no gate-shaped gate frame like patent document 2, the visibility from the driver and conductor of a train improves.

  In addition, a door body 5 that can be vertically expanded and contracted is provided, and an upper end side of the door body 5 is fixed to an upper portion of the movable column 3. When the passage to the vehicle is closed, the movable column 3 is lowered, and the door body 5 When the passage to the vehicle is opened, the movable column 3 is raised, and the lower end side of the door body 5 is moved upward to bring the door body 5 into a compressed state. Therefore, the rope which is easy to bend like patent document 3 is not used. For this reason, the gap between the door bodies is reduced, giving a sense of security in appearance, and the distance between the rope and the platform and the distance between the ropes may be deliberately or accidentally pushed, so that the user can move from the platform to the track. Can be reliably prevented from falling into or coming into contact with a train that has entered the line.

  In the above-described embodiment, one set of the home door 1 has been described. However, a plurality of such home doors 1 are provided on the platform 7, and a part or all of the platform door 1 is opened or closed so as to correspond to the door position of the train. It is normal to do.

  Moreover, in the said embodiment, although the door main body 5 assumed that the some horizontal frame 51 was connected so that it could expand-contract vertically by the pantograph mechanism 51a, the number of the horizontal frames 51 and the pantograph mechanisms 51a, those The arrangement relationship and the like are not limited to those illustrated. Furthermore, the door main body 5 may have a bellows (accordion) shape that can expand and contract in the vertical direction.

  In the above embodiment, the drive mechanism 4 is a ball screw type drive mechanism driven by a motor 41. However, the motor is not limited to an electric type, and may be a pneumatic type or a hydraulic type, for example. Also good. Further, a cylinder or the like may be used instead of the motor, and a rack and pinion mechanism or the like may be used instead of the ball screw type driving mechanism.

  Moreover, in the said embodiment, although the principle of a moving pulley is utilized for the expansion-contraction operation | movement of the door main body 5, this structure is applied similarly also to the rope type of the patent document 3, the bar type home door, etc. Needless to say, it can be done.

  Moreover, in the said embodiment, although the operation | movement of the lower end side of the door main body 5 was based on the principle of the moving pulley which consists of the sprocket 45 and the chain 46, even if it consists of a roller and a rope, Good. Furthermore, a drive mechanism separate from the drive mechanism 4 of the movable column 3 may be provided.

  Further, the scope of application of the present invention is not limited to the home door 1 of the above-described embodiment, and further application destinations may include home gates, garage doors, garbage station doors, and the like.

DESCRIPTION OF SYMBOLS 1 Home door 2 Fixed column 3 Movable column 4 Drive mechanism 41 Motor 42 Screw shaft 43 Nut 44 Guide 44a Support column 44b Pad 45 Sprocket 46 Chain 5 Door main body 51 Horizontal frame 51a Pantograph mechanism 52, 53 Inclined link 54, 55, 56 Rotation Axis 6 Sensor 7 Platform

Japanese Patent Laying-Open No. 2015-089718 JP 2012-214196 A JP 2014-091410 A

Claims (6)

A home door comprising a fixed column erected on a railway platform, a movable column that can be raised and lowered while being supported by the fixed column, and a drive mechanism that moves the movable column up and down,
Equipped with a door body that can be expanded and contracted vertically,
The upper end side of the door body is fixed to the upper part of the movable column,
When the passage to the vehicle is closed, the movable column descends, the lower end side of the door body moves downward, and the door body is in an extended state.
When the passage to the vehicle is opened, the movable column ascends, and the lower end side of the door body moves upward so that the door body is in a compressed state.   The home door according to claim 1, wherein the door body is formed by connecting a plurality of horizontal frames so as to be vertically extendable by a pantograph mechanism.   The platform door according to claim 1, wherein the drive mechanism is a ball screw type drive mechanism.   The home door according to any one of claims 1 to 3, wherein the operation on the lower end side of the door body utilizes the principle of a moving pulley.   The platform door according to any one of claims 1 to 4, further comprising a guide that regulates an inclination of the movable column with respect to the fixed column.   The platform door according to any one of claims 1 to 5, wherein the drive mechanism is provided on the left and right sides of the door body.

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