JP4576283B2 - Platform clearance adjustment device - Google Patents

Description

  In order to prevent passengers from falling on a track at a railway vehicle platform such as a railway station, for example, the present invention provides a simple clearance between the platform tip and the vehicle entrance. The present invention relates to a device that can be adjusted with a simple structure.

  Conventionally, when a train arrives on the premises at a railway station, if the track along the platform is a straight line, there is no large gap between each vehicle and the platform, but if the track is curved, the train In the platform located outside the vehicle, a large gap is formed between the platform and the platform near the center of each vehicle. On the platform located inside the train, a large gap is formed between the platform and the platform near the front and rear ends of each vehicle. A gap is created.

The present applicant has previously proposed a device for adjusting a gap between a vehicle and a platform in Patent Document 1 (Japanese Patent Laid-Open No. 2000-142381).
FIG. 14 is a plan view showing a platform equipped with a conventional gap adjusting device 010 at the tip. In the figure, the present apparatus 010 is mounted on a platform P located outside a curved track, and T represents a train vehicle that has arrived at the platform P. FIG. 15 is a plan view of the device, and FIG. 16 is a cross-sectional view taken along the line AA in FIG. FIG. 16A shows a state where the step plate 011 hangs down, and FIG. 16B shows a state where the step plate 011 rises horizontally.

  As shown in FIG. 14, when the train arrives at the platform P provided along the curved track, the clearance between the platform door Pb and the platform P located near the center of the vehicle T is large, and the position near the end of the vehicle T is large. The clearance between the entry / exit door Da and the platform P is small. Therefore, in order to fill the gaps with the respective entrance / exit doors, platform tip clearance adjusting devices 010 are installed corresponding to the respective entrance / exit doors.

  15 and 16, reference numeral 011 denotes a movable step plate (movable stepping plate) that fills a gap with the vehicle T stopped on the track, 012 denotes a drive mechanism that drives the step plate 011, and 013 denotes a drive mechanism 012. A recess 014 installed on the upper surface of the platform P for installation is an upper lid (lid) that is detachably attached to the upper surface of the platform P and closes the recess 013.

  The step plate 011 is pivotally supported by pins 015 arranged in parallel to the vehicle T that stops on the platform P, and both ends of the pins 015 are supported by a concrete structure constituting the platform P. The step plate 011 can be swung around the pin 015, and is usually in a state of being suspended by its own weight. The width of the step plate 011 parallel to the traveling direction of the train is a size obtained by adding twice the vehicle stop accuracy S to the width L of the passenger door D.

As shown in FIG. 16, the driving device 012 can be projected and retracted forward from the front end of the platform P, and a slide mechanism 016 provided at a position where it abuts on the step plate 011 from the lower surface side in the process of projecting and retracting forward. It comprises a prime mover 017 that operates the mechanism 016 and pushes the step plate 011 to rotate upward.
At the tip of the slide mechanism 016, a roller 016a that abuts on the lower surface of the step plate 011 and rolls is provided so that the step plate 011 can be turned without any trouble when the step plate 011 is pushed out.

The recess 013 is formed by hollowing out the concrete structure that forms the platform P, and a slide mechanism receiver (seat) that disperses the load acting on the platform P from the step plate 011 via the drive mechanism 012 on the inner surface thereof. Plate) 018 is installed.
A folding portion 018a is provided on the upper edge of the slide mechanism receiver 018. The slide mechanism receiver 018 is attached to the platform P by a bolt (not shown) screwed through a bolt hole formed in the folding portion 018a. It is fixed.

In such a device, when it is confirmed that the train has arrived at the platform P, the prime mover 017 is operated and the slide mechanism 016 slides forward. The slide mechanism 016 pushes and rotates the step plate 011 in a state where the roller 16a is in contact with the step plate 011 from the lower surface side in the process of protruding forward.
The step plate 011 is substantially flush with the upper surface of the platform P in a state where the step mechanism 016 is moved forward, the gap between the platform P and the vehicle T is filled, and the passenger gets on and off using the step plate 011 as a bridge.

At this time, the load applied to the step plate 011 acts on the platform P via the step mechanism 016, but this load is dispersed by the slide mechanism receiver 018 including the weight of the slide mechanism 016.
When the passenger finishes getting on and off, the prime mover 017 is actuated again and the slide mechanism 016 slides backward. Following this, the slide plate 011 rotates downward to return to the suspended state, and the departure and passage of the train It becomes possible.

  Patent Document 2 (Japanese Patent No. 2654985) discloses a gap adjusting device having another configuration. FIGS. 17 and 18 are cross-sectional side views of the apparatus. FIG. 17 shows a state in which the movable tread plate 024 is suspended, and FIG. 18 shows a state in which the movable tread plate 024 is positioned horizontally. In the figure, one end of a flat plate-shaped movable tread 024 is pivotally attached to a mounting plate 023 via a hinge 035 at a tip of a predetermined position of the platform P, and a motor 030 with a speed reducer is mounted on the lower surface of the platform P. The installed crankshaft 031 provided on the rotating shaft 030a of the electric motor 030 is transmitted to the connecting portion 033 of the movable tread plate 024 via the connecting rod 032, and the movable tread plate 024 rises or swings around the hinge 035.

The rotation of the crank 031 enables a movement exceeding 180 degrees, the position corresponding to the dead center of the crank 031 is exceeded, and no further rotation is performed, so that an arc-shaped stopper partially protruding outward from the circular plate 034 is provided, thereby providing a locking action that does not reverse by an external force.
In such a configuration, the movable tread plate 024 is positioned horizontally at the same level as the platform P by the rotation of the crank 031 only when the vehicle stops at a fixed position of the platform 02, and the gap between the vehicle and the platform is reduced.

JP 2000-142381 A Japanese Patent No. 2654985

  The apparatus disclosed in Patent Document 1 can expose the drive mechanism 012 by removing the upper lid 014, perform maintenance on the platform P, improve maintainability, and step plate 011. Load and the own weight of the slide mechanism 016 are dispersed by the slide mechanism receiver 018, so that the load load on the platform P is reduced and the durability is improved. If a malfunction occurs and the vehicle T starts to start before the step plate 011 moves backward and hits the step plate 011, there is a problem that the vehicle T is damaged.

  The apparatus disclosed in Patent Document 2 cannot cope with a case where the gap between the front end of the platform P and the vehicle fluctuates because the movable tread plate 024 is composed of a single plate. Further, there is a problem in that an excessive load is applied to the electric motor 030 because the load on the passenger board 024 is directly applied to the electric motor 030 and directly supported by the driving force of the electric motor 030.

  In view of the above-mentioned problems, the present invention can greatly simplify the apparatus, and does not require a large scale modification of the platform when installed on the platform, and the gap size between the vehicle and the platform varies. An object of the present invention is to provide a gap adjusting device that can cope with the vehicle and that does not damage the vehicle even if the vehicle starts to start due to a malfunction and hits the gap adjusting device.

In order to achieve the above object, the gap adjusting device of the present invention includes:
In the device for adjusting the gap between the platform and the vehicle in order to prevent passengers from falling from the platform,
A movable step having a length equal to or greater than the opening width of the vehicle entrance and exiting in a direction facing the vehicle at the tip of the platform;
Drive means provided at the lower end of the movable step,
At least the upper part of the movable step is composed of a plurality of articulated link members that have a restraining function with respect to a downward load and that can be released with respect to an external force acting from the vehicle side,
When the lower end portion of the movable step is raised or rotated, the articulated link member is configured to form a tread plate that protrudes horizontally toward the vehicle.

In the device of the present invention, the movable step having the above configuration is usually suspended at the tip of the platform so as to face the vehicle, the vehicle enters the platform and stops, and the passenger gets on and off from the entrance. The position corresponding to the entrance / exit of the vehicle by the action of the articulated link member having a function of restraining the downward load by raising or rotating the lower end portion of the movable step constituted by the articulated link member in advance by the driving means. A horizontal tread plate that protrudes toward the vehicle is formed. When the boarding gate opens, passengers step on this footboard to get on and off.
Further, when the passenger finishes getting on and off and the entrance / exit is closed, the driving means is operated to rotate the lower end of the movable step in the reverse direction to the case of descending or ascending, and the movable step is suspended. As a result, the movable step is lowered to eliminate the tread, and the start of the train is not hindered.

In the device according to the present invention, at least the upper part of the movable step constituting the footboard is constituted by a plurality of articulated link members that have a restraining function against a downward load and that can release the restraining function against an external force acting from the vehicle side. The restraining mechanism against the downward load can maintain sufficient strength to withstand passengers riding on the tread, and only change the rising stroke of the lower end of the movable step or the rotation angle of the lower end of the movable step. Further, the projecting dimension of the horizontal tread plate toward the vehicle can be changed to a desired value in accordance with the clearance dimension between the platform and the vehicle.
Further, when the vehicle comes into contact with the movable step due to a malfunction, the articulated link member constituting the tread plate bends and moves backward with respect to the external force of the vehicle, so that the impact caused by the contact can be reduced.

In the present invention apparatus, preferably, the lower end of the front Symbol movable step is constrained by the support plate, said drive means, that the connecting rod and the bracket attached to the support plate is guided by the guide rods, wherein driving Organization or Ranaru lower end of the movable step is reciprocated vertically along the guide bar while being restrained by the support plate. In this configuration, the lower end of the movable step is raised by the driving means to form a horizontal tread board between the platform and the vehicle. In this case, the projecting dimension of the horizontal tread plate toward the vehicle can be changed to a desired value according to the clearance dimension between the platform and the vehicle only by changing the rising stroke at the lower end of the movable step.

  Alternatively, preferably, the driving means is constituted by an electric motor having an output shaft connected to a lower end portion of the movable step. In this configuration, the horizontal stepping plate is formed between the platform and the vehicle by rotating the movable step end of the movable step by the electric motor. In this case, only by changing the rotation angle of the lower end portion of the movable step, the projecting dimension of the horizontal tread plate toward the vehicle can be changed to a desired value according to the clearance dimension between the platform and the vehicle.

In the device of the present invention, preferably, as a restraining function against a downward load, each articulated link member is provided with a stopper plate whose end surfaces are brought into contact with each other when the articulated link member forms a horizontal footboard.
In the device of the present invention, preferably, as a restraining function against a downward load, the articulated link member hinges between the articulated link members on the lower surface side, and when the articulated link member forms a horizontal footboard, the end surface of the articulated link member is It is configured so as to face each other.
In the device of the present invention, preferably, a shock-absorbing elastic rubber is attached to the tip of the tread plate so that even if the vehicle hits a movable step due to a malfunction, the shock-absorbing action is generated on the elastic rubber to reduce the impact of the collision. To do.

  According to the present invention, the movable step having a length equal to or larger than the opening width of the vehicle entrance and exiting in the direction facing the vehicle at the tip of the platform, and the driving means provided at the lower end of the movable step are provided. Comprising at least an upper part of the movable step with a plurality of articulated link members that have a restraining function with respect to a downward load and with which the restraining function is released with respect to an external force acting from the vehicle side, and a lower end portion of the movable step By configuring the articulated link member to form a tread plate that protrudes horizontally toward the vehicle when raised or rotated, the basic configuration of the gap adjusting device includes a plurality of articulated link members. In addition, only the driving means provided at the lower end of the movable step is sufficient, and a tread board having sufficient strength to withstand the weight of the passenger can be formed with a simple configuration, and compared with the conventional apparatus. The overall configuration can be greatly simplified, when attached to the platform can also be greatly reduced and the construction work.

Accordingly, since the weight of the movable step can be reduced, the moving speed of the movable step can be increased, and the horizontal step formed by the multi-joint link member can be changed only by changing the rising stroke or the rotation angle of the lower end portion of the movable step. Since the projecting dimension of the tread board toward the vehicle can be made variable, it is possible to cope with a change in the gap dimension between the platform and the vehicle.
In addition, when the vehicle comes into contact with the movable step due to a malfunction, the multi-joint link member has a configuration in which the restraining function is released with respect to the external force acting from the vehicle side. Since the multi-joint link member bends and moves backward, the impact due to contact can be reduced.

Preferably, as a restraining function for the downward load, each articulated link member is provided with a stopper plate whose end faces are brought into contact with each other when the articulated link member forms a horizontal stepping plate, or restrained against the downward load. As a function, the articulated link members are hinged on the lower surface side, and when the articulated link members form a horizontal footboard, the end surfaces of the articulated link members are abutted against each other, further simplifying With such a configuration, the above-described effects of the present invention can be achieved.
Preferably, a shock-absorbing elastic rubber is attached to the tip of the tread plate, and even if the vehicle hits a movable step due to a malfunction, the elastic rubber can be buffered to reduce the impact of the collision.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative positions, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention unless otherwise specified.
1 is a perspective view according to a first embodiment of the apparatus of the present invention, FIG. 2 is a partially enlarged perspective view showing the assembly of the first embodiment, and FIG. 3 is an enlarged sectional view of a portion III in FIG. 4 is a perspective view of the tread plate portion in the first embodiment, FIG. 5 is an enlarged cross-sectional view of a portion V in FIG. 4, and FIG. 6 is an operation procedure diagram of the apparatus of the first embodiment.

  In FIG. 1, A is a movable step of the device of the present invention, and the upper part of the movable step A constitutes a footboard 1. Reference numerals 1a and 1b denote separate tread pieces, which are connected to each other by end plates 2 so as to be rotatable. Reference numeral 3 denotes a support plate having one end rotatably connected to the tip of the tread plate piece 1 a, and the other end of the support plate 3 is connected to the connecting rod 6 by a connector 12. Reference numeral 4 denotes a motor that moves the tread pieces 1a and 1b to a horizontal position or a suspended state as shown in FIG. 1. A screw rod 10 is connected to a rotating shaft of the motor 4. Is installed.

  5 is a sliding body screwed into the screw rod 10 and moves up and down by the rotation of the screw rod 10. 6 is a connecting rod connected to the sliding body 5 in the horizontal direction. A bracket 7 is connected to both ends of the connecting rod 6, and the bracket 7 is provided with a through hole in the vertical direction, and a guide rod 9 is provided in the through-hole. Are slidably fitted, and the bracket 7 moves up and down along the guide rod 9 as the sliding body 5 moves up and down.

The gap adjusting device of the present embodiment is housed in a space s provided in the front surface facing the track side of the platform P, and the upper opening f of the space s is usually a lid (not shown) that is flush with the platform P. ). In order to perform maintenance of the motor 4, a lid that opens and closes the space f1 only in the vicinity of the motor 4 may be provided separately.
Reference numerals 8 denote support columns provided at both corners of the space S. As shown in FIG. 2, a support frame 14 that pivotally supports the end plate 2 by a link pin 21 is attached to an upper portion thereof. Reference numeral 13 denotes a shock-absorbing elastic rubber attached to the front end side of the tread piece 1a.

  2 to 5 are enlarged views showing the frame structure of the footboard pieces 1a and 1b. FIG. 2 is a perspective view during assembly of the tread pieces 1a and 1b. The end plate 2 is rotatably connected to the support frame 14 by link pins 21, and a plurality of rows of round bars 22 are mounted between the end plates 2. Has been. A link bar 23 is mounted on the tip of the end plate 2, and the link bar 23 is connected to the support plate 3 by a link pin 21 so as to be rotatable with respect to each other. Reference numeral 24 denotes a stopper fixed to the two rows of round bars 22 with the end surfaces of the pair of stopper plates 24a and 24b facing each other when the tread pieces 1a and 1b are in a horizontal state.

  FIG. 3 is an enlarged sectional view of a portion III in FIG. 2. As shown in FIG. 3, the stopper 24 is attached with stopper plates 24a and 24b with their end faces in contact with each other. Reference numeral 25 denotes a shim interposed for adjusting a gap between the end faces of the stopper plates 24a and 24b.

  As shown in FIG. 4, the tread plates 1 a and 1 b are covered and fixed to such a frame structure to constitute the tread plate 1 of the first embodiment. As shown in FIG. 5, the elastic rubber 13 for buffering is formed by attaching a rubber plate to the link bar 23 with bolts 26 in an arc shape. The mounting length can be changed by changing the mounting position of the bolt 26 in a long hole (not shown) provided in the rubber plate.

  In the first embodiment having such a configuration, the operation procedure will be described with reference to FIG. When the train is not approaching the platform P, the movable step A is suspended from the front surface facing the track side of the platform P as shown in FIG. After the train enters the platform P, the clearance adjustment device is operated by means such as interlocking with a vehicle stop command from the train cab or detecting the approach of the vehicle on the platform P side and interlocking with it. Thereby, as shown in FIG.6 (b), the motor 4 act | operates and the sliding body 5 raises and the movable step A rises in connection with it. Before the train stops and the entrance / exit of the vehicle opens, the footboard 1 including the footboards 1a and 1b is made to reach the horizontal position as shown in FIG. 6 (c).

  As shown in FIG. 6C, when the tread board 1 reaches the horizontal position and protrudes toward the vehicle side, the motor 4 is stopped and the tread board 1 is fixed at that position. At this time, since the end surfaces of the stopper plates 24a and 24b are in abutment with each other, the passenger plate has sufficient strength to support it even if the passenger gets on it. As shown in FIG. 6 (d), when an external force g is applied to the tread board 1 from the direction of the vehicle, the tread board pieces 1a and 1b are bent to each other, so that the tread board is not damaged.

For example, the protruding dimension of the footboard from the front surface of the platform P to the vehicle side is set to 150 mm, and the length of the footboard is set to 2000 mm. The length of the footboard is longer than the width of the entrance / exit.
After the passenger has finished getting on and off and the vehicle entrance / exit is closed, it is linked to the vehicle start command from the train cab or the vehicle is detected by the platform P and linked to the detection signal. Thus, the movable step A is lowered.

  According to the first embodiment, since the footboard 1 is made light, it can be started up instantaneously (for example, 1 second) by the motor 4. Further, when the footboard 1 is positioned horizontally, the end surfaces of the stopper plates 24a and 24b are abutted with each other, and the horizontal state is maintained by the reaction force of each other. Sufficient strength to support For example, a tread of the above dimensions can withstand a weight of 450 kg.

  The apparatus of the first embodiment is simplified as a whole and does not require a large-scale modification of the platform P. Further, the maintenance of the motor 4 can be facilitated by simply opening the lid that covers the opening f1 formed in the platform P. Further, since the buffering elastic rubber 13 is attached to the tip of the tread plate 1, even if the vehicle contacts the tread plate 1 due to a malfunction, the impact is alleviated by the elastic rubber 13, and the tread plate is against external force on the vehicle side. Since the pieces 1a and 1b are bent, the vehicle is not damaged.

  Next, a second embodiment of the device of the present invention will be described with reference to FIGS. 7 and 8 are side views of the apparatus of the second embodiment mounted on the platform P. FIG. In the figure, 31 is a tread plate in which a plurality of elongated tread plate pieces 31a are rotatably connected to each other, one end of which is connected to the uppermost part of the track-side front end surface of the platform P, and the other end is a single plate. The support plate 32 is connected to one end. The stepping plate 31 and the support plate 32 constitute a movable step B. The other end of the support plate 32 is connected to a sliding carriage 33 having a roller 34. The sliding carriage 33 is guided by a guide rail 36 formed on the column 35 and slides up and down.

  The sliding carriage 33 is connected to a belt (or chain) 39 wound between the drive wheel 37 and the driven wheel 38 and moves up and down by the rotation of the wheels 37 and 38. Reference numeral 40 denotes a motor whose rotation shaft is connected to the drive wheel 37 and rotates the drive wheel 37. The devices such as the wheels 37 and 38 and the motor 40 are installed in a recess that forms the track-side front surface of the platform P, and are supported by a base (not shown) supported by the support column 35.

In the apparatus of the second embodiment, when the train is not approaching the platform P, the movable step B composed of the tread plate 31 and the support plate 32 is in a suspended state due to the sliding carriage 33 descending downward. ing.
After the train enters the platform P, the motor 40 is operated in conjunction with a stop command from the train cab or a command from a detector provided on the platform P, and the sliding carriage 33 is moved to the guide rail 36. Start climbing along.
The plate piece 31a has a length larger than the width of the vehicle entrance / exit, for example, 2000 mm. Then, as shown in FIG. 8, the sliding carriage 33 is stopped and fixed when the tread 31 is in a horizontal position. In FIG. 8, the motor 40 is not shown.

  FIG. 9 is a cross-sectional view of the tread plate 31. In the drawing, a tread plate piece 31 a is supported on a support frame 41 attached to a support column 35 so as to be rotatable about a support shaft 42. The tread pieces 31a are connected to each other by a fixed plate 44 of a hinge 43 provided on the lower surface of the tread piece 31a. When the tread plate 31 is positioned horizontally, the end surfaces 31b of the tread plate pieces 31a are in contact with each other, and even if a passenger gets on the tread plate 31, the reaction force applied to the end surfaces 31b from the tread plate pieces 31a on both sides As a result, the tread plate 31 is held horizontally.

After the passenger finishes getting on and off and the vehicle entrance / exit is closed, the motor 40 operates and slides in conjunction with a start command from the train cab or in response to a command from a detector provided on the platform P. The carriage 33 descends and the movable step B returns to the original suspended state.
According to the second embodiment, in addition to the function and effect of the first embodiment, the vehicle of the tread plate 31 is adjusted according to the gap between the platform P and the vehicle T by further adjusting the sliding height of the sliding carriage 33. The effect that the protrusion dimension to the side can be adjusted can be exhibited.

Next, a third embodiment of the device of the present invention will be described with reference to FIGS. 10 is a plan view of the third embodiment, FIG. 11 is a sectional side view taken along the line XI-XI of FIG. 10, FIG. 12A is an elevation view of the multi-joint portion of the third embodiment, and FIG. Is a plan view, FIG. 13C is a perspective view of the joint piece 61, and FIG. 13 is an explanatory view showing the operating state of the movable step of the third embodiment step by step.
10-11, 51 is a cover board which covers the space S provided in the platform P, and as shown in FIG. 10, both the space S and the cover board 51 are small scale provided only in the drive motor installation part. It has become a thing.

52 is a multi-joint portion formed by connecting a large number of joint pieces 61 to each other, and one end of the multi-joint portion 52 extends in both forward and reverse directions on a support shaft 53 that is horizontally mounted on the platform P at both ends. The other end is connected to a motor shaft 54a of a servo motor 54 provided in the space S. 55 is a step board provided on the upper surface side joint piece 61 of the multi-joint portion 52, and forms a flat surface of the same level as the upper surface of the cover plate 51 when the movable step C is in an operating state. Reference numeral 56 denotes a shock absorbing rubber provided on the joint piece 61 disposed at the end on the track side when the movable step C is in the operating state.
As shown in FIG. 10, two servo motors 54 are provided on both sides of the motor shaft 54a, and the movable step C is divided into two from the middle in the longitudinal direction. Two columns are provided in each movable step C.

Next, the structure of the joint piece 61 will be described with reference to FIG. In each joint piece 61 constituting the multi-joint portion 52, left and right side plates 62, 62 are connected by an upper plate 63 and a bottom plate 64, and the left and right side plates 62 have a cylindrical projection 65 and a circular hole 66, respectively. The cylindrical protrusion 65 of each joint piece 61 is loosely fitted to the circular hole 66 of the adjacent joint piece 61, thereby forming a multi-joint portion 52 in which a large number of joint pieces 61 are connected.
When a force a is applied from above in a state where the joint pieces 61 are connected to each other, the claw 67 provided in each joint piece 61 hits the upper surface of the bottom plate 64 of the adjacent joint piece 61, thereby forming a planar shape. A flat plate having rigidity against a load from above is formed.
On the other hand, when a force b from below is applied, the cylindrical projection 65 and the circular hole 66 are loosely fitted, and therefore , are configured to bend to a predetermined angle as shown in FIG.

In the third embodiment having such a configuration, the operation procedure will be described with reference to FIG. When the train is not approaching the platform P, the movable step C is in a state of hanging downward as shown in FIG.
After the train enters the platform P, the clearance adjustment device is operated by means such as interlocking with a vehicle stop command from the train cab or detecting the approach of the vehicle on the platform P side and interlocking with it. As a result, as shown in FIG. 13B, the servo motor 54 operates to rotate the motor shaft 54a in the direction of the arrow c to raise the movable step C.

Thereafter, when the motor shaft 54a of the servo motor 54 is further rotated in the direction of the arrow c, the servo motor 54 is stopped as shown in FIG. 13 (e). In this state, the train stops entering the platform P, the entrance / exit is opened, and passengers get on and off using the movable step C as a stepping platform.
Further, in this operating state, even when the movable step C receives an external force g1 downward in the vertical direction as shown in FIG. 13 (e), the multi-joint portion 52 has sufficient rigidity to resist it, as shown in FIG. Such a flat plate shape can be maintained.

  When the movable step C reaches the operating state shown in FIG. 13 (e), the servo motor 54 is controlled to be stopped by providing position detecting means such as a limit switch, and the movable step C shown in FIG. 13 (e). The servo motor 54 may be stopped by operating the position detection means when the operating state is reached, or the rotation amount of the motor shaft 54a is set in advance, and the servo motor 54 is reached when the set rotation amount is reached. May be stopped.

Further, when an external force g2 acting from the track side is received as shown in FIG. 13 (f), it can be easily bent and retracted to the platform P side as shown in FIGS. 13 (f) to (j). Therefore, even if the train enters the movable step board C in an operating state due to a malfunction and collides with the movable step C, the movable step C does not give a large impact or damage to the train.
In the third embodiment, when the movable step C is in an operating state, the shock absorber 56 is attached to the joint piece 61 located at the tip of the movable step C, so that the shock when something collides can be reduced.

According to the third embodiment, by operating the servo motor 54 and rotating the motor shaft 54a attached to one end of the movable step C formed of the multi-joint portion 52, the movable step C is changed from the suspended state to the operating position. Therefore, the drive mechanism of the movable step C can be substantially only a servo motor, and the apparatus configuration is greatly simplified.
Further, the amount of protrusion of the movable step C on the track side can be easily changed simply by changing the amount of rotation of the motor shaft 54a of the servo motor 54.

Furthermore, since the multi-joint portion 52 is composed of a joint piece 61 as shown in FIG. 12, the step can be easily formed by the rotation of the servo motor 54, and sufficient rigidity and strength can be provided with respect to the load from above on the step. Can be held.
Further, since the configuration of the entire apparatus is simplified, there is an advantage that the construction work can be simplified without requiring a large-scale platform remodeling work.

  As described above, according to the present invention, the apparatus can be greatly simplified, and when installed on a platform, no major modification of the platform is required, and the amount of protrusion of the movable step to the track side is reduced. It is possible to provide a gap adjusting device that can be easily adjusted and that does not damage the vehicle even if the vehicle starts to start due to a malfunction and hits the gap adjusting device.

It is a perspective view which concerns on 1st Example of this invention apparatus. It is a perspective view which shows during the assembly of the footboard part in the said 1st Example. It is an expanded sectional view of the III section of FIG. It is a perspective view which shows the tread board part of the said 1st Example. It is an expanded sectional view of the V section of FIG. It is explanatory drawing which shows the operation | movement procedure of the said 1st Example. It is a side view (at the time of footboard lowering) concerning the 2nd example of the present invention. It is a side view (at the time of a footboard rise) concerning the 2nd example of the present invention. It is an expanded sectional view of the foot board part of the 2nd example. It is a top view of 3rd Example of this invention apparatus. It is the XI-XI cross section side view of FIG. (A) is an elevational view of the multi-joint portion of the third embodiment, (b) is a plan view thereof, and (c) is a perspective view of the joint piece 61. It is explanatory drawing which shows the operation condition of the movable step of the said 3rd Example later on. It is a top view which shows the platform equipped with the conventional platform clearance gap adjustment apparatus. It is a top view of the conventional platform clearance gap adjusting device. It is AA arrow sectional drawing of FIG. It is a cross-sectional side view which shows the state which the movable tread plate 024 drooped in another conventional platform gap adjustment apparatus. It is a cross-sectional side view which shows the state in which the movable tread plate 024 was located horizontally in the conventional apparatus of FIG.

Explanation of symbols

A, B, C Movable step 1a, 1b Stepping plate piece 2 End plate 3 Support plate 4 Motor 5 Slider 6 Connecting rod 7 Bracket 8 Strut 9 Guide rod 10 Screw rod 11 Base 12 Connecting tool 13 Buffer rubber 14 Support frame 21 Link Pin 22 Round bar 23 Link bar 24 Stopper 24a, 24b Stopper plate 25 Shim 26 Bolt 31 Tread plate 31a Tread plate piece 31b End face 32 Support plate 33 Sliding carriage 34 Roller 35 Post 36 Guide rail 37, 38 Wheel 39 Belt or chain 40 Motor 41 Support frame 42 Support shaft 43 Hinge 44 Fixing plate 51 Cover plate 52 Multi-joint portion 53 Support shaft 54 Servo motor 54a Motor shaft 55 Foot plate 56 Buffer rubber 61 Joint piece 62 Side plate 63 Top plate 64 Bottom plate 65 Cylindrical protrusion 66 Circular hole 67 Claw g1 Passenger load g2 External force

Claims (6)

In the device for adjusting the gap between the platform and the vehicle in order to prevent passengers from falling from the platform,
A movable step having a length equal to or greater than the opening width of the vehicle entrance and exiting in a direction facing the vehicle at the tip of the platform;
Drive means provided at the lower end of the movable step,
At least the upper part of the movable step is composed of a plurality of articulated link members that have a restraining function with respect to a downward load and that can be released with respect to an external force acting from the vehicle side,
A platform gap adjusting device characterized in that the articulated link member forms a tread that protrudes horizontally toward the vehicle when the lower end of the movable step is raised or rotated. The lower end of the front Symbol movable step is constrained by the support plate, said drive means, that the connecting rod and the bracket attached to the support plate is guided by the guide rods, a lower end portion of the movable step support plate platform clearance adjustment apparatus according to claim 1, wherein the Ranaru or driven Organization for reciprocating vertically along the guide bar in a state of being constrained by.   2. The platform gap adjusting device according to claim 1, wherein the driving means is an electric motor having an output shaft connected to a lower end portion of the movable step.   2. The platform gap according to claim 1, wherein, as a restraining function against a downward load, each multi-joint link member is provided with a stopper plate whose end surfaces are brought into contact with each other when the multi-joint link member forms a horizontal footboard. Adjustment device.   As a restraining function against a downward load, the articulated link members are hinged on the lower surface side, and when the articulated link members form a horizontal footboard, the end surfaces of the articulated link members are abutted against each other. The platform clearance adjusting device according to claim 1.   2. The platform clearance adjusting device according to claim 1, wherein a shock absorbing elastic member is attached to a tip of the tread plate.

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