JP5546215B2 - Platform step device - Google Patents

Description

  The present invention relates to a platform step device provided on the platform side in order to prevent a passenger from falling into a gap between a platform and a stopped vehicle.

  A conventional platform step device advances by moving a plate-like movable body from the platform side to the vehicle side, and the movement is driven by a rack and pinion mechanism (for example, Patent Document 1). reference).

Hereinafter, a conventional platform step device will be described with reference to FIGS.
In FIG. 14, the station platform 50 has an upper surface 52 and a front end surface 51. A corner portion where the upper surface 52 and the front end surface 51 intersect forms an end edge portion 53. A storage portion 54 is formed on a part of the platform 50 (near the door of the stopped vehicle) so that the end edge portion 53 is scraped off to a predetermined thickness and in a rectangular shape. Further, a through hole 55 is formed at a predetermined position on the bottom surface of the storage portion 54. The fall prevention device 60 shown in FIG. 13 is fitted in the storage portion 54, and the upper surface is installed so that there is no step difference from the upper surface 52 of the platform.

As shown in FIG. 13, the fall prevention device 60 includes a plate-like fall prevention member 61, a central plate 62 connected to the fall prevention member, an end plate 63, a base 70 on which the central plate 62 and the end plate 63 are placed. , 71 is provided with a base frame 68 having a cut-in portion 69 and a ceiling member (not shown) that covers the upper surface of the base frame 68 and has a flat upper surface.
In FIG. 13, the base frame 68, the bases 70 and 71, and the fall-preventing member 61 are schematically shown apart in a disassembled state, but the bases 70 and 71 are fitted into the cut portions 69 of the base frame 68, The fall prevention member 61 is integrally fixed to one end of the center plate 62 and the end plate 63 mounted on the bases 70 and 71 with bolts or the like.
A rack member 64 is extended and fixed to the center plate 62. The rack member 64 meshes with a pinion 65 pivotally supported by a drive motor 66, and the center plate 62 moves in a direction perpendicular to the track. It is possible.

  In the guide mechanism 67, a base 70 on which the center plate 62 is placed is fitted into a notch 69 in the center formed in the base frame 68, and a base 71 on which the end plate 63 is placed is fitted in the notches 69 on both ends. Has been. In addition, a pair of guide rails 72 are extended on the central base 70, and guide rails 73 are extended on the bases 71 on both sides. The center plate 62 and the end plate 63 are movably fitted to the guide rails 72 and 73, respectively, so that the fall-preventing member 61 is housed in the housing portion 54 of the platform 50 and the front end surface 51 of the platform 50. It is guided in a projecting position protruding from the track side to the track side so that it can appear and disappear.

Next, the operation of the fall prevention device 60 will be described.
Before the train arrives at the platform 50, the fall prevention member 61 is in the immersive position and is stored in the storage portion 54.
When the train arrives at the platform 50 and the train stops, the drive motor 66 is activated in response to the opening operation of the movable platform fence device (not shown) installed on the platform 50, and the pinion 65 moves the rack member 64 forward. The center plate 62 and the end plate 63 are guided by the guide rail 72 and the guide rail 73 and advance toward the track side.
Thereby, the fall prevention member 61 protrudes from the immersive position to the track side of the protruding position, closes the gap between the platform 50 and the vehicle, and passengers get on and off.

  When the boarding / exit is completed, the drive motor 66 reverses in response to the closing operation of the movable home fence device (not shown), and the pinion 65 passes the rack member 64 through the center plate 62 and the end plate 63 to the guide rail 72, The fall prevention member 61 fixed to the center plate 62 and the end plate 63 is retracted from the protruding position to the immersive position and stored in the storage portion 54.

JP 2002-53035 A

  The stepping device in the conventional platform fall prevention device is driven by a rack and pinion mechanism because the fall prevention member is moved by a rack and pinion mechanism, so that even if the rack mounting position deviates even a little, good engagement with the pinion is not obtained and smooth Strict adjustment work is required at the time of laying because it cannot be driven. In addition, when the installation surface fluctuates due to ground subsidence or the like, there is a problem that smooth drive of the step is easily lost, and maintenance work is required to readjust the rack mounting position.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a platform step device that can smoothly and reliably start and stop movement of a movable step.

A platform step device according to the present invention is a platform step device that prevents a passenger from falling into a gap between a platform and a stopped vehicle . The platform step device is installed on an upper surface of an edge of the platform facing the vehicle. An apparatus main body comprising a box having an opening in an opposing direction; a movable step installed in the apparatus main body; and a drive device for moving the movable step forward and backward with respect to the vehicle direction. And a slider crank device that holds the movable step in the advanced position and the retracted position via a link arm, and the slider crank device engages one end of a crank disk that is rotated by a drive device. The other end is connected by a link arm engaged with the movable step, and the clamp Advancing speed and retreating speed of the movable step are made sinusoidal by the rotation of the disk, and the stroke adjustment of the movable step is performed by adjusting the engaging portion between the crank disk and the link arm in the radial direction of the crank disk. It is provided so that movement adjustment is possible along .
Further, the platform step device according to the present invention is a platform step device that prevents a passenger from falling into a gap between the platform and the stopped vehicle, and is installed on the upper surface of the edge of the platform facing the vehicle. An apparatus main body comprising a box having an opening in a direction facing the vehicle, a movable step installed in the apparatus main body, and a drive device for moving the movable step forward and backward with respect to the vehicle direction; A slider crank device is provided that interlocks and holds the movable step at the advanced position and the retracted position via a link arm, and an overload protection device is provided at an engaging portion of the movable step and the link arm. Is.

According to the present invention, the drive means for moving the movable step operating so as to cover the gap between the platform and the stopped vehicle is constituted by the slider crank device, and the engaging portion between the crank disk and the link arm is provided. Since it is provided so that movement can be adjusted along the radial direction of the crank disk, or since an overload protection device is provided at the engaging portion of the movable step and the link arm , starting and stopping can be realized without using a special control device. In addition, there is an effect that a highly safe platform step device that is resistant to noise and can prevent malfunction is obtained.

It is a top view which shows the step apparatus for platforms which concerns on Embodiment 1 of this invention. It is a side view which shows the platform step apparatus which concerns on Embodiment 1 of this invention. It is a top view of the slider crank apparatus which shows the platform step apparatus which concerns on Embodiment 1 of this invention. It is an operation | movement figure of the crank disk which shows the platform step apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows the platform of the step apparatus for platforms which concerns on Embodiment 1 of this invention. It is a top view which shows the crank disk of the step apparatus for platforms which concerns on Embodiment 2 of this invention. It is a side view which shows the attaching part of FIG. It is an operation | movement figure which shows the overload protection apparatus of the step apparatus for platforms which concerns on Embodiment 3 of this invention. It is a top view of the guide which shows the drop-off prevention apparatus of the movable step of the platform step apparatus which concerns on Embodiment 4 of this invention. FIG. 10 is a side sectional view of FIG. 9. It is a top view of the platform step apparatus which concerns on Embodiment 6 of this invention. It is a side view of the front part of the box of the step device for platforms concerning Embodiment 6 of this invention. It is a top view which decomposes | disassembles and shows the conventional platform step apparatus typically. It is a perspective view which shows the platform of the conventional step apparatus for platforms.

Embodiment 1 FIG.
1 is a plan view of a platform step device according to a first embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of a slider crank device, and FIG. FIG. 5 is a perspective view showing an edge portion of the platform.
1 to 4, a platform step device is formed of a box, a step device main body 1 having an opening 2 at one end, and a box smaller than the step device main body 1. The movable step 3 housed in the opening 2 is provided so as to be easily moved back and forth, the guide 4 extending along the opening 2 in the lower surface of the movable step 3, and the step device main body 1 The roller guide 5 is provided on the inner bottom surface of the cam follower so as to extend in the direction of the opening 2 and slides forward and backward while sandwiching the guide 4 from both sides, and protrudes downward from the bottom surface of the step device body 1. Are attached to a shaft projecting into the box body of the output step device body 1 of the drive device 6 and the output step device main body 1 of the drive device 6 and are connected to a plurality of screws at different positions in the radial direction. A disc-shaped crank disk 7 provided with a plurality of holes 7a each having a hole or the like is provided in the box body of the step device body 1 so as to extend in the direction of the opening 2 and the slider 8 is provided in the direction of the opening 2 One end of the linear guide 9 sandwiched and provided so as to be easily advanced and retracted, and a predetermined hole 7a on the upper surface of the crank disk 7 are pivotably engaged, and the other end is not shown in the figure. And an overload protection device 11 composed of an axial guard that is attached to the slider 8 and operates in the forward / backward direction of the slider.

  In FIG. 5, reference numeral 30 denotes a station platform, and an end edge 33 is formed by a front end face 31 and an upper face 32. Reference numeral 34 denotes a storage portion, which is formed so as to scrape the upper surface 32 of the end edge portion 33 into a rectangular shape with a predetermined thickness. A through hole 35 is formed at a predetermined position on the bottom surface of the storage portion 34.

In the platform step device configured as described above, one end of the step device main body 1 made of a box is pivotally engaged with the hole 7a of the crank disk 7 rotated by the drive device 6, A link arm 10 whose other end is pivotably locked to the slider 8 is provided continuously.
The slider 8 is provided with an overload protection device 11 serving as an axial guard, and one end thereof is fixed to the movable step 3.
The slider 8 is installed between the linear guides 9 provided side by side and is slidable forward and backward.
Further, the guide 4 fixedly attached to the movable step 3 is installed between the roller guides 5 provided adjacent thereto, and is provided so as to be slidable forward and backward, whereby the movable step 3 can be moved forward and backward.

  As described above, the step device main body 1 incorporating various members therein is placed on the storage portion 34 that is recessed in the platform 30, and the drive device 6 is stored in the through hole 35. At this time, the upper surface of the step device main body 1 is provided so as to be flush with the upper surface 32 of the platform 30.

  The installation place of the step device main body 1 is installed below the entrance door 43 that opens and closes the entrance 41 of the movable platform fence device 40 that secures the safety of passengers installed in the vicinity of the edge 33 of the platform 30. . In addition, when the passenger door 43 is opened, it is accommodated in a door pocket fence 42 fixed to the platform 30.

Next, the operation will be described.
After the train has traveled to the platform 30, the train stops and the train entrance / exit door opens, and at the same time, the entrance / exit door 43 of the movable platform fence device 40 that is normally closed is opened.
When the driving device 6 of the step device main body 1 is activated by setting in conjunction with the opened state of the passenger door 43 described above, the crank disk 7 fixed to the output shaft rotates halfway, and one end is fixed accordingly. The slider 8 is moved forward in the vehicle direction via the link arm 10 so that the movable step 3 moves forward in the vehicle direction from the retracted position to close the gap between the platform 30 and the vehicle (not shown). Make getting on and off safe.

When the passenger boarding / exiting is completed and the train entrance / exit door is closed, the entrance / exit door 43 of the movable platform fence device 40 of the platform 30 operates to change the entrance / exit 41 from the open state to the closed state.
In conjunction with the closed state of the passenger door 43, the drive device 6 of the step device main body 1 is activated, the crank disk 7 fixed to the rotation shaft rotates, and the link with one end fixed accordingly. The slider 8 is retracted into the step device body 1 from the vehicle direction via the arm 10, whereby the movable step 3 is retracted and held in the step device body 1 from the advance position.

  According to the first embodiment, since the drive for moving the movable step that moves so as to cover the gap between the platform and the stopped vehicle is configured by the slider crank device, without using a special control device, There is an effect that it is possible to realize a step device for a platform with high safety that can realize start and stop, and is strong against noise and can prevent malfunction.

  Also, the movable step and the crank disk are connected by a link arm, and by rotating the crank disk, the advance / retreat speed of the movable step becomes a sine wave. There is little impact and has the effect of increasing the service life.

  Also, the engaging part between the crank disk and the link arm is slid along the radial direction of the crank disk to adjust the stroke of the movable step, so there is no need for screw adjustment to lengthen or shorten the link arm, and rigidity. High link arm can be obtained.

Embodiment 2. FIG.
6 is a plan view showing a crank disk of a platform step device according to Embodiment 2 of the present invention, and FIG. 7 is a side view showing an attaching portion of FIG.
In the figure, reference numeral 13 denotes a T-shaped groove formed on the upper surface of the crank disk 7 in a predetermined length along the radial direction, and reference numeral 14 denotes a T-shaped slide member provided in the T-shaped groove 13 so as to be easily slidable in the radial direction. Thus, a pin portion 14a set slightly higher depending on the thickness of the link arm 10 and a screw portion 14b are provided so as to protrude upward. 14c is a step portion of the T-shaped portion, 15 is a nut, 16 is a screw hole provided through the slide member 14 in the height direction, and is provided at a position in the inner diameter direction from the pin portion 14a. Has been.

In the first embodiment described above, the crank arm 7 is shown in which the link arm 10 is pivotably attached to a plurality of holes 7a provided at different positions in the radial direction. 6, a T-shaped slide member 14 is mounted in a T-shaped groove 13 formed along the radial direction of the crank disk 7, and is screwed into a screw hole 16 at a predetermined position. When the bolt 17 is screwed in, the tip of the bolt 17 comes into contact with the bottom surface of the T-shaped groove 13, and the T-shaped step 14 c of the slide member 14 comes into contact with the step of the T-shaped groove 13 by this insertion external force. The sliding member 14 is firmly held in position by the frictional force.
Next, when the hole portion at one end of the link arm 10 is fitted to the pin portion 14a of the slide member 14, and the nut 15 is inserted into the screw portion 14b and tightened and fixed, the link arm 10 is rotatably mounted. The

Also in the second embodiment, the forward stroke of the movable step 3 can be easily changed and adjusted by changing the locking position of the link arm 10 in the radial direction of the crank disk 7 as in the first embodiment. .
As shown in FIG. 4A, the attachment position of the link arm 10 to the crank disk 7 is set so as to be backward in the forward / backward direction at the retracted position of the movable step 3 and forward in the forward position. Since the output shaft is set to the half rotation, as shown in FIG. 4 (b), the starting operation moves at a sinusoidal advance / retreat speed every half rotation of the crank disk 7, and at each stop point. Maintain a reliable stop.

Embodiment 3 FIG.
FIG. 8 is a sectional view showing an overload protection device 11 serving as an axial guard of a platform step device according to Embodiment 3 of the present invention. FIG. (B) shows an overload (trip state).
In FIG. 8A showing the operation, 11 is an overload protection device. 18 is a slide shaft provided with a predetermined length, 19 is a groove portion provided in a ring shape along the outer periphery at a predetermined position of the slide shaft 18, and a plurality of 20 are provided in the groove portion 19 along the circumferential direction. It is a steel ball. Reference numeral 21 denotes a cylindrical case, which is provided so that the inner bottom surface comes into contact with the steel ball 20 with a hole portion 21a provided in the bottom portion being easily fitted to the slide shaft 18. Reference numeral 22 denotes a ring-shaped metal receiving member, which has an inner diameter 22a and is easily fitted on the slide shaft 18. One inclined side surface is in contact with the steel ball 20, and the other side surface is a disc spring 23 which is an elastic member. Are arranged.

Reference numeral 24 denotes a ring-shaped adjusting member, which is a screw portion 24a formed on the outer diameter, and is screwed into a screw hole 21b formed on the inner diameter of the cylindrical case 21, so that the disc spring 23 is adjusted to a predetermined pressure. Press. The inner diameter 24b of the ring-shaped adjusting member 24 is provided so as to have a slight gap from the outer diameter of the slide shaft 18.
As shown in FIGS. 1 and 3, one end of the slide shaft 18 of the overload protection device 11 is fixed to the movable step 3, and the cylindrical case 21 is fixed to the slider 8. Thus, the movable step 3 and the slider 8 are connected via the overload protection device 11.

  Next, the operation will be described. When the vehicle approaches the platform and the movable step 3 moves forward in the track direction, when the vehicle contacts the movable step 3 and an external force greater than the set force acts in the axial direction (when overloaded), The steel ball 20 mounted in the groove portion 19 of the slide shaft 18 is pushed up from the groove portion 19 against the pressing force of the disc spring 23 and rides on the slide shaft 18 to form a trip shape as shown in FIG. Become a bear.

  With the above operation, the movable step 3 fixed to the slide shaft 18 of the overload protection device 11 and the slider 8 fixed to the cylindrical case 21 lose the axial holding force, and the movable step 3 Is pushed by the external force and retracts without being damaged in the main body of the step device.

Next, the normal operation return of the overload protection device 11 will be described. When it is confirmed that the external force in the axial direction does not continuously act on the movable step 3 and the movable step 3 is pulled in the line direction, the slide shaft 18 of the overload protection device 11 easily moves inside the cylindrical case 21. The steel ball 20 held in the cylindrical case 21 is dropped and attached to the groove portion 19 of the sliding shaft 18 that is sliding.
By the above operation, the steel ball 20 held in the groove portion 19 is pressed by a predetermined elastic force of the disc spring 23, and the slide shaft 18 and the cylindrical case 21 are united by a predetermined fixing force and return to normal.

  In the third embodiment, since the overload protection device is provided at the engaging portion between the movable step and the link arm, the movable step, the driving device, etc. It has the effect of preventing damage.

Embodiment 4 FIG.
FIG. 9 is a partial cross-sectional plan view showing a movable step drop-off prevention device for a platform step device according to Embodiment 4 of the present invention, and FIG. 10 is a side view of FIG.
In the figure, 25 is a groove portion set at a depth H provided along the traveling direction of the movable step 3 on the lower surface of the guide 4, and 26 is a sliding member made of a roller or the like. The stop member 26a is provided to be easily rotated.

Reference numeral 27 denotes a guide stopper serving as a drop-off prevention device, which is set to protrude from the upper surface of the step device main body 1. The front end of the roller guide 5 (line) that slides forward and backward with the guide 4 sandwiched from both sides. Side) end portions are connected to each other.
The height h of the guide stopper 27 is set to be lower than the depth H of the groove 25 of the guide 4.

  Next, the operation will be described. As described above, the crank disk 7 is rotated by the driving device 6, and the slider 8 is slid linearly via the link arm 10. As a result, the movable step 3 fixed to the slider 8 is advanced in the line direction. The guide 4 fixed to the movable step 3 is sandwiched between roller guides 5 on both sides, and a sliding member 26 is provided on the lower surface so that the movable step 3 can be easily advanced and retracted.

Next, the operation at the time of abnormality will be described. If, for example, the link arm 10 is cut or the engaging portions at both ends of the link arm 10 are broken during the moving operation of the movable step 3 in the line direction, the moving operation of the movable step 3 becomes free, and the moving operation proceeds in the line direction. Move with repulsive force.
However, the leading sliding member 26 provided in the groove 25 on the lower surface of the guide 4 comes into contact with the guide stopper 27 provided between the end portions of the roller guide 5 so that the movable step 3 is dropped in the line direction. To prevent.
Note that the distance between the sliding member 26 at the head in the traveling direction and the guide stopper 27 is set slightly longer than the maximum stroke of the link arm 10, so there is no influence on the normal advance operation of the movable step 3.

  In the fourth embodiment, the drop-off prevention device is installed on the guide fixed to the movable step, so that the movable step stops at the specified stroke position even if the link arm or the like that moves the movable step breaks. Therefore, there is an effect that the movable step is not dropped and damaged.

Embodiment 5 FIG.
FIG. 11 is a plan view showing the arrangement of the platform step device according to the fifth embodiment of the present invention. In FIG. 11, reference numeral 28 denotes a plate-like shape that connects the step device main bodies 1 adjacent in the line direction in the lateral direction. The connecting member 29 is a fixing member such as a bolt.

Next, the operation will be described. As in the first embodiment, the step device main body 1 whose width direction is reduced along the line direction is connected to the storage portion recessed in the end edge portion of the platform (not shown) and connected in the width direction. Then, the adjacent guides 4 and 4 are connected in the horizontal direction and the connecting member 28 is attached, and the fixing members 29 are fixed to the respective guides 4 and 4.
As a result, the two step device bodies 1 are integrated, and the movable steps 3 and 3 are simultaneously advanced and retracted by driving the respective crank disks 7.

  In the fifth embodiment, since the platform step device is reduced in size along the track direction and installed adjacent to each other, the device is reduced in size and weight, and the transportation and installation work can be facilitated. is there.

Embodiment 6 FIG.
12 is a side view showing a line side end portion of a box body of a platform step device according to Embodiment 6 of the present invention. In the figure, reference numeral 1a denotes an upper end of a line side opening 2 of the box body of the step device body 1. FIG. It is a slope part provided by inclining the part.

  Next, the operation will be described. An opening 2 is provided at the front end of the step device main body 1 at substantially the same position as the end edge 33 of the platform 30. When the vehicle stops, the movable step 3 moves forward and passengers get on and off. At this time, since the slope portion 1a is formed in the direction of the movable step 3, the upper end portion of the opening portion 2 of the box body of the step device main body 1 has almost no step.

  In the sixth embodiment, since the slope portion is provided by inclining the vehicle-side upper edge portion of the box of the step device main body, when the passenger gets on and off, the feet are stable and the passenger can get on and off safely. effective.

DESCRIPTION OF SYMBOLS 1 step apparatus main body, 1a slope part, 2 opening part, 3 movable step, 4 guide, 5 roller guide, 6 drive device, 7 crank disk, 8 slider, 9 linear guide, 10 link arm, 11 overload protection apparatus, 13 T-shaped groove, 14 slide member, 18 slide shaft, 19 groove portion, 20 steel ball, 21 cylindrical case, 25 groove portion, 26 sliding member, 27 guide stopper, 28 connecting member, 29 fixing member, 30 platform, 33 edge Section, 34 storage section, 40 movable home fence.

Claims (3)

A platform step device for preventing a passenger from falling in a gap between a platform and a stopped vehicle, the box being installed on an upper surface of an edge facing the vehicle of the platform and having an opening in a direction facing the vehicle An apparatus main body, a movable step installed in the apparatus main body, and a drive device for moving the movable step forward and backward with respect to the vehicle direction. The movable step is linked to the drive device via a link arm. The slider crank device is provided with a slider crank device that is held in the advanced position and the retracted position . The slider crank device engages one end of the crank disk rotated by the drive device, and the other end is used as the movable step. It is connected by the engaged link arm, and the movable disc is rotated by rotating the crank disk by the driving device. The advancing speed and the retreating speed of the top are made sinusoidal, and the stroke of the movable step is adjusted by moving the engaging portion between the crank disk and the link arm along the radial direction of the crank disk. A platform step device characterized in that it is adjustable . A platform step device for preventing a passenger from falling in a gap between a platform and a stopped vehicle, the box being installed on an upper surface of an edge facing the vehicle of the platform and having an opening in a direction facing the vehicle An apparatus main body, a movable step installed in the apparatus main body, and a drive device for moving the movable step forward and backward with respect to the vehicle direction. The movable step is linked to the drive device via a link arm. A platform step device comprising a slider crank device for holding in an advanced position and a retracted position, wherein an overload protection device is provided at an engaging portion between the movable step and the link arm . The slider crank device has one end engaged with a crank disc rotated by a driving device and the other end connected with the link arm engaged with a movable step, and the crank disc is rotated by the driving device. The platform step device according to claim 2, wherein the moving speed and the backward speed of the movable step are made sinusoidal by movement .

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