Platform door device

Abstract

To provide a platform door device that can open and close a first door and a second door more smoothly.SOLUTION: The platform door device is arranged along an edge of a platform, and includes: a door pocket; a first door supported by the door pocket; a second door supported by the first door; a drive mechanism for moving the first door to an opening / closing direction of the first door; and an interlocking mechanism for moving the second door to the same direction as the first door in conjunction with the first door. The first door has a first upper beam, a first main beam, and a first lower beam sequentially in a vertical direction. The second door has a second upper beam supported by the first upper beam, a second main beam supported by the first main beam, a second lower beam supported by the first lower beam, and a door-end side connector for connecting the second upper beam, the second main beam, and the second lower beam. The first main beam can be moved in the opening / closing direction by the drive mechanism.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a platform door device. [Background technology]

[0002] Platform door systems are installed along the edge of station platforms to prevent people from falling from the platform onto the tracks, and are equipped with a door pocket and a door supported so that the door can enter and exit the door pocket. Doors are available in one-stage and two-stage types. Two-stage platform door systems can provide a wider opening while preventing the door pocket from becoming too large. Therefore, two-stage door systems can create a wider opening in a limited space.

[0003] For example, Patent Document 1 discloses a platform door device that includes a door pocket, a first door supported by the door pocket, a second door supported by the first door, a drive mechanism that moves the first door in the opening and closing direction of the first door, and a linkage mechanism that moves the second door in the same direction as the first door in conjunction with the first door. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-163000 Summary of the Invention [Problem to be solved by the invention]

[0005] It is desirable for the opening and closing operations of the first and second doors in a platform door device to be smoother.

[0006] The present invention aims to provide a platform door device that allows the first door and the second door to be opened and closed more smoothly. [Means for solving the problem]

[0007] A platform door device according to one aspect of the present invention is arranged along the edge of a platform, Door pocket and a first door supported in the door pocket; a second door supported by the first door; a drive mechanism that moves the first door in a direction in which the first door is opened or closed; an interlocking mechanism that moves the second door in the same direction as the first door in conjunction with the first door; Equipped with The first door has a first upper beam, a first main beam, and a first lower beam that extend in the opening and closing direction in this order in the vertical direction, the first upper beam, the first main beam, and the first lower beam are supported by the door pocket at intervals in the up-down direction and movable in the opening and closing direction, The second door is a second upper beam supported by the first upper beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; a second main beam supported by the first main beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; a second lower beam supported by the first lower beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; A door end side connector that connects the second upper beam, the second main beam, and the second lower beam, the first main beam is movable in the opening and closing direction by the drive mechanism, The interlocking mechanism includes: a first interlocking mechanism that moves the second main beam in the same direction as the first main beam in conjunction with the first main beam; a second interlocking mechanism that moves the first lower beam in the same direction as the first main beam in conjunction with the first main beam; a first door trailing edge side connector that connects the first upper beam and the first main beam; Equipped with. [Effects of the Invention]

[0008] According to the present invention, the first door and the second door can be opened and closed more smoothly. [Brief explanation of the drawings]

[0009] [Figure 1] This is an oblique view showing the closed state of the platform door device of this embodiment. [Figure 2] This is an oblique view showing the door pocket of the platform door device of this embodiment. [Figure 3] This is a front view showing the first main beam and the first upper beam of the platform door device of this embodiment. [Figure 4] This is an oblique view showing the first lower beam and the first additional beam of the platform door device according to this embodiment. [Figure 5] This is a front view showing the second door of the platform door device of this embodiment. [Figure 6] FIG. 2 is an oblique view showing the motor of the platform door device according to this embodiment. [Figure 7] FIG. 1 is a schematic diagram (1) illustrating the operation of the first interlocking mechanism of the platform door device according to this embodiment. [Figure 8] FIG. 2 is a schematic diagram (2) illustrating the operation of the first interlocking mechanism of the platform door device according to this embodiment. [Figure 9] An oblique view showing the closed state of a platform door device related to a modified example of this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] The embodiments of the present invention relate to the following aspects.

[0011] [1] A platform door device arranged along the edge of a platform, Door pocket and a first door supported in the door pocket; a second door supported by the first door; a drive mechanism that moves the first door in a direction in which the first door is opened or closed; an interlocking mechanism that moves the second door in the same direction as the first door in conjunction with the first door; Equipped with The first door has a first upper beam, a first main beam, and a first lower beam that extend in the opening and closing direction in this order in the vertical direction, the first upper beam, the first main beam, and the first lower beam are supported by the door pocket at intervals in the up-down direction and movable in the opening and closing direction, The second door is a second upper beam supported by the first upper beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; a second main beam supported by the first main beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; a second lower beam supported by the first lower beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; A door end side connector that connects the second upper beam, the second main beam, and the second lower beam, the first main beam is movable in the opening and closing direction by the drive mechanism, The interlocking mechanism includes: a first interlocking mechanism that moves the second main beam in the same direction as the first main beam in conjunction with the first main beam; a second interlocking mechanism that moves the first lower beam in the same direction as the first main beam in conjunction with the first main beam; a first door trailing edge side connector that connects the first upper beam and the first main beam; A platform door device equipped with:

[0012] [2] the drive mechanism includes a drive unit, a first drive pulley provided on an output shaft of the drive unit, and a first drive belt wound around the first drive pulley; The first drive belt is fixed to the first main beam along the opening and closing direction, The second interlocking mechanism is a first interlocking pulley provided on the output shaft; a driven shaft rotatably provided in the door pocket, a second drive pulley and a second interlocking pulley integrally provided on the driven shaft; a second drive belt wound around the second drive pulley; an endless belt wound around the first interlocking pulley and the second interlocking pulley, The platform door device described in [1], wherein the second drive belt is fixed to the first lower beam along the opening and closing direction.

[0013] [3] The first door has a first additional beam further below the first lower beam, The first additional beam is supported by the door pocket so as to be movable in the opening and closing direction with a gap between the first additional beam and the first lower beam, the second door has a second additional beam that is supported by the first additional beam so as to be movable in the opening and closing direction and extends along the opening and closing direction; The second additional beam is connected to the door end side connector, The interlocking mechanism is provided with a second tail-end connector that connects the first lower beam and the first additional beam.The platform door device described in [1] or [2].

[0014] [4] The platform door device according to any one of [1] to [3], wherein an operating unit is provided on the upper surface of the door pocket.

[0015] [5] A platform door device according to any one of [1] to [4], wherein a control panel is provided inside the door pocket, and the control panel is positioned below the first lower beam.

[0016] (1) Overall structure The platform door system according to this embodiment will be described below with reference to the drawings. The following explanation will be given using a Cartesian coordinate system with mutually perpendicular X, Y, and Z axes. The direction parallel to the X axis is referred to as the "X direction" or "opening / closing direction," the direction parallel to the Y axis is referred to as the "Y direction" or "up-down direction," and the direction parallel to the Z axis is referred to as the "Z direction" or "thickness direction." The +X side toward the door pocket in the X direction is referred to as the "door tail side," "opening side," or "opening orientation," and the -X side toward the opposite side of the door pocket is referred to as the "door tip side," "closing side," or "closing orientation." The +Y side of the Y direction is referred to as the "upper side," and the -Y side is referred to as the "lower side." The +Z side toward the center of the platform in the Z direction is referred to as the "front side" or "near side," and the -Z side away from the center of the platform is referred to as the "rear side" or "rear side." In this specification, "end" refers to a certain area including the end of a component. In this specification, "along" a certain direction is not limited to being parallel to that direction but also includes being tilted by approximately ±10 degrees relative to that direction.

[0017] (1-1) Platform door device The platform door device 10 shown in FIG. 1 is disposed on the edge of the platform 1 facing the track (not shown) and cooperates with a similar platform door device (not shown) disposed adjacently in the X direction to form a boarding / alighting passageway that can be opened and closed in the X direction, facing the boarding / alighting entrance of a railway vehicle or the like. The platform door device 10 includes a door pocket 12, a pair of sliding doors 14L and 14R, a drive mechanism (described later), and an interlocking mechanism (described later). The sliding door 14L disposed on the left side of the door pocket 12 is a two-stage door with two doors. The sliding door 14R disposed on the right side of the door pocket 12 is a single-stage door with one door. The sliding door 14R disposed on the right side of the door pocket 12 is offset in the thickness direction relative to the sliding door 14L disposed on the left side. In other words, the sliding door 14L disposed on the left side is closer to the front, and the sliding door 14R disposed on the right side is closer to the back, so that they are staggered relative to the door pocket 12. This specification will focus on the sliding door 14L, which is its main characteristic feature.

[0018] (1-2) Door pocket As shown in Fig. 2, the door pocket 12 is a hollow, substantially rectangular parallelepiped member having a front surface 16 parallel to the X and Y directions, a back surface 18 opposite the front surface 16, and side surfaces 20, a top surface 22, and a bottom surface 24 disposed between the front surface 16 and the back surface 18. The bottom surface 24 of the door pocket 12 is fixed to the platform 1. The door pocket 12 has a plurality of openings 26 in the side surfaces 20, and supports the sliding doors 14L, 14R through the openings 26 so that they can move in the opening and closing directions. The door pocket 12 has a plurality of rails extending in the X direction. In Fig. 2, the door pocket 12 has a main rail 28 and a lower rail 30.

[0019] The door pocket 12 has a first housing 32 and a second housing 34. The first housing 32 is located on the lower side in the Y direction and has a rectangular parallelepiped shape with its length in the X direction longer than its length in the Y direction. The bottom surface of the first housing 32 is the bottom surface 24 of the door pocket 12. The second housing 34 has a rectangular parallelepiped shape with its length in the X direction shorter than that of the first housing 32, and is fixed to the top surface of the first housing 32 with its center in the X direction aligned with the center of the first housing in the X direction.

[0020] The main rail 28 is provided on the upper surface 33 of the first housing 32. The lower rail 30 is provided inside the first housing 32. A motor housing 36 is provided on the first housing 32, protruding in the X direction of the first housing 32 relative to the second housing 34. The motor housing 36 houses a motor as a drive unit. A through-hole 40 that penetrates in the Y direction is provided in the upper surface 33 of the first housing 32 corresponding to the motor housing 36. The motor housing 36 has an opening 26 on its outer surface in the X direction.

[0021] The door pocket 12 has an operating unit 42 on the top surface 22. The operating unit 42 is used by the conductor to manually open and close the platform doors and vehicle doors. Although not shown, the operating unit 42 has a plurality of operating buttons and indicators, as well as a cover that covers the operating buttons. The operating buttons include, for example, an open button and a close button. The indicators change, for example, between a lit, unlit, and flashing state, to indicate the status of the platform doors open, platform doors closed, vehicle doors open, vehicle doors closed, and in operation, respectively.

[0022] A control panel 44 is provided inside the door pocket 12. The control panel 44 is arranged below the lower rail 30. The door pocket 12 may also be provided with various devices 46 such as a power supply inside. Similar to the control panel 44, the various devices 46 are arranged below the lower rail 30.

[0023] (1-3) Sliding door The sliding doors 14L, 14R are formed of a material having a specific gravity lighter than that of the door pocket 12, such as aluminum or an aluminum alloy.

[0024] (Sliding door 14R) The sliding door 14R (FIG. 1) has an upper beam 48, a main beam 50, and a lower beam 52, in that order from top to bottom. The upper beam 48, the main beam 50, and the lower beam 52 are arranged parallel to one another with a gap in the vertical direction and are supported by the door pocket 12 so as to be movable in the opening and closing directions. The upper beam 48, the main beam 50, and the lower beam 52 are connected to one another at their leading ends. In the sliding door 14R, the main beam 50 moves in the opening and closing directions by the power of a motor (not shown). Because the main beam 50, the upper beam 48, and the lower beam 52 are connected to one another at their leading ends, the upper beam 48 and the lower beam 52 move in the opening and closing directions integrally with the main beam 50. The sliding door 14R may also have an additional beam 54. The additional beam 54 is arranged below the lower beam 52 in the Y direction. The structure and drive mechanism of the sliding door 14R may be similar to known structures and drive mechanisms, and therefore further description thereof will be omitted in this specification.

[0025] (Sliding door 14L) The sliding door 14L has a first door 56 supported by the door pocket 12 and a second door 58 supported by the first door 56 (FIG. 1). The first door 56 has, in order from top to bottom, a first upper beam 60, a first main beam 62, and a first lower beam 64 extending in the X direction. The first upper beam 60, the first main beam 62, and the first lower beam 64 are arranged parallel to one another with a gap between them in the vertical direction, and are supported by the door pocket 12 so as to be movable in the opening and closing directions. The first upper beam 60 and the first main beam 62 are supported by the second housing 34. The first lower beam 64 is supported by the first housing 32. The first door 56 has a first door trailing edge connector 66.

[0026] As shown in FIG. 3, the first main beam 62 is connected to the first upper beam 60 via a first trailing edge connector 66. The first main beam 62 is a hollow member with a rectangular parallelepiped cross section. The first main beam 62 has a front member 70 arranged on the front side, a back member 72 facing the front member 70, a top member 74 arranged on the upper side, and a bottom member 76 facing the top member 74. The trailing edge side base end and leading edge side tip of the first main beam 62 are both open. A leading edge side pulley 78 is provided at the leading edge side end, and a trailing edge side pulley 80 is provided at the trailing edge side end. An endless first interlocking belt 82 is wound around the leading edge side pulley 78 and the trailing edge side pulley 80.

[0027] The first main beam 62 is provided with a pair of support parts 86. The support parts 86 rotatably support the leading-end pulley 78 and the trailing-end pulley 80. Each of the pair of support parts 86 is a plate-shaped member with the opening / closing direction as its longitudinal direction and the up-and-down direction as its short side. The pair of support parts 86 are arranged parallel to each other with their surfaces facing each other. Each of the pair of support parts 86 is connected to the first main beam 62. The trailing-end side end of the support part 86 is connected to the first main beam 62. The leading-end side end of the support part 86 is not connected to the first main beam 62.

[0028] The leading-side pulley 78 and trailing-side pulley 80 are mounted on a pair of support parts 86 so that part of the lower surfaces of the leading-side pulley 78 and trailing-side pulley 80 protrude downward from the lower ends of the pair of support parts 86. The pair of support parts 86 are supported by the first main beam 62 like a cantilever beam while supporting the leading-side pulley 78 and trailing-side pulley 80.

[0029] The first main beam 62 is provided with a first door trailing edge side fixing portion 90 and a first door leading edge side fixing portion 92. The first door trailing edge side fixing portion 90 and the first door leading edge side fixing portion 92 fix a first drive belt 94 to the first main beam 62. The first door trailing edge side fixing portion 90 is provided at the door trailing edge side end of the first main beam 62. The first door leading edge side fixing portion 92 is provided at the door leading edge side end of the first main beam 62. The first door trailing edge side fixing portion 90 and the first door leading edge side fixing portion 92 are plate-shaped members, and fix the first drive belt 94 to the first main beam 62 by sandwiching the end of the first drive belt 94 between them and the bottom member 76 of the first main beam 62.

[0030] The first main beam 62 has a linear guide 96 on the door trailing edge side of the bottom member 76. The first main beam 62 moves in the opening / closing direction as the linear guide 96 slides on the main rail 28 in the X direction.

[0031] The first upper beam 60 is a hollow member and has a horizontal roller 59 and a vertical roller 61 as a linear motion mechanism at its end on the door leading side. The horizontal roller 59 is rotatably supported on a shaft extending in the Y direction provided on the inner surface of the first upper beam 60. The vertical roller 61 is rotatably supported on a shaft extending in the Z direction provided on the inner surface of the first upper beam 60.

[0032] The first door trailing edge connector 66 connects the first main beam 62 and the first upper beam 60 on the door trailing edge side. The first door trailing edge connector 66 is a plate-shaped member having a plane parallel to the X and Y directions, and its upper end in the Y direction is fixed to the first upper beam 60 and its lower end in the Y direction is fixed to the first main beam 62.

[0033] The first lower beam 64 shown in FIG. 4 is a hollow member and has a horizontal roller 59 and a vertical roller 61 as a linear motion mechanism at its leading edge. The first lower beam 64 is provided with a second trailing edge fixing portion 98 and a second leading edge fixing portion 100. The second trailing edge fixing portion 98 and the second leading edge fixing portion 100 fix a second drive belt 102 (described later) to the first lower beam 64. The second trailing edge fixing portion 98 is provided at the trailing edge end of the first lower beam 64. The second leading edge fixing portion 100 is provided at the leading edge end of the first lower beam 64. The second trailing edge fixing portion 98 and the second leading edge fixing portion 100 are plate-shaped members and fix the second drive belt 102 to the first lower beam 64 by sandwiching the end of the second drive belt 102 between them and the bottom of the first lower beam 64.

[0034] The first door 56 may further have a first additional beam 104 and a second door trailing edge connector 68. The first additional beam 104 is disposed below the first lower beam 64 in the Y direction. The first additional beam 104 is a hollow member extending in the X direction, and has a horizontal roller 59 and a vertical roller 61 as a linear motion mechanism at its door leading edge end.

[0035] The second trailing-door-side connector 68 connects the first lower beam 64 and the first additional beam 104 on the trailing-door-side side. The second trailing-door-side connector 68 is a plate-shaped member having a plane parallel to the X and Y directions. Its upper end in the Y direction is fixed to the first lower beam 64 and its lower end in the Y direction is fixed to the first additional beam 104. The second trailing-door-side connector 68 is provided with a guide 106 and a guide roller 108. The guide 106 is provided at a position where it can slide in the X direction on the lower rail 30 provided on the first housing 32. The guide 106 is a groove-shaped member extending in the X direction. The guide 106 is provided on the surface of the rear side of the second trailing-door-side connector 68 with its groove facing downward in the Y direction. The guide rollers 108 are arranged on both sides of the guide 106 in the X direction. The guide rollers 108 are rotatably provided on a shaft extending in the Z direction provided on the second trailing-door-side connector 68. The guide rollers 108 may run on the lower rail 30 .

[0036] 5, the second door 58 has, in order from top to bottom, a second upper beam 110, a second main beam 112, and a second lower beam 114 extending in the X direction. The second upper beam 110, the second main beam 112, and the second lower beam 114 are arranged parallel to one another with a gap between them in the vertical direction, and are supported by the first upper beam 60, the first main beam 62, and the first lower beam 64, respectively, so as to be movable in the opening and closing directions.

[0037] The second main beam 112 is a hollow member with a rectangular parallelepiped cross section, and has a horizontal roller 59 and a vertical roller 61 as a linear motion mechanism at its trailing edge. The second main beam 112 has a second front member 116 arranged on the front side, a second back member 118 facing the second front member 116, a second top member 120 arranged on the upper side, and a second bottom member 122 facing the second top member 120.

[0038] The second main beam 112 has a guide portion 124. The guide portion 124 is a plate-shaped member with the opening / closing direction as the longitudinal direction and the thickness direction as the lateral direction. The guide portion 124 is fixed to the second main beam 112 by a plurality of legs 126. The base ends of the plurality of legs 126 are fixed to the inner surface of the second bottom surface member 122, and are plate-shaped members extending upward in the up-down direction, and are arranged at predetermined intervals in the opening / closing direction. The lower surface of the guide portion 124 is fixed to the upper ends of the plurality of legs 126.

[0039] The guide portion 124 extends in the opening / closing direction by legs 126, and is held at a predetermined height from the inner surface of the second bottom member 122. The second main beam 112 has a beam-side fixing portion 128 on its inner surface on the trailing edge side of the guide portion 124. The beam-side fixing portion 128 is a plate-shaped member with fixing surfaces parallel to the X and Z directions, and is provided on the inner surface of the second main beam 112. The upper surface of the guide portion 124 can come into contact from below with the first interlocking belt 82 (FIG. 3) wound around the leading edge pulley 78 and trailing edge pulley 80.

[0040] The second upper beam 110 and the second lower beam 114 are each a member with an inverted U-shaped cross section, and are provided at their pair of lower ends with return parts 130 that protrude toward the inside of the opening. The second upper beam 110 and the second lower beam 114 each have a vertical roller 61 as a linear motion mechanism at their trailing end.

[0041] The second door 58 has a door-edge-side connector 132 that connects the second upper beam 110, the second main beam 112, and the second lower beam 114 to one another. The door-edge-side connector 132 is a columnar member extending in the Y direction and has a first connector 134 and a second connector 136. The first connector 134 has an upper end connected to the door-edge-side end of the second upper beam 110 and a lower end connected to the door-edge-side end of the second main beam 112. The second connector 136 has an upper end connected to the door-edge-side end of the second main beam 112 and a lower end connected to the door-edge-side end of the second lower beam 114.

[0042] The second upper beam 110 is inserted into the first upper beam 60, the second main beam 112 into the first main beam 62, and the second lower beam 114 into the first lower beam 64. When the base end of the second main beam 112 on the trailing edge side is inserted into the tip end of the first main beam 62 on the leading edge side, the second main beam 112 enters the first main beam 62 while the vertical roller 61 and the horizontal roller 59 rotate in contact with the inner surface of the first main beam 62. The second main beam 112 can move in the X direction within the first main beam 62 by the horizontal roller 59 and the vertical roller 61.

[0043] When the base end of the second upper beam 110 on the door trailing edge side is inserted into the tip end of the first upper beam 60 on the door leading edge side, the vertical roller 61 comes into contact with the inner surface of the first upper beam 60, and at the same time, the horizontal roller 59 and vertical roller 61 of the first upper beam 60 come into contact with the return part 130 on the inner surface and the side surface, respectively, of the second upper beam 110. The second upper beam 110 moves in the X direction within the first upper beam 60 together with the second main beam 112 by its own vertical roller 61, while maintaining its orientation along the X direction by the horizontal roller 59 and vertical roller 61 of the first upper beam 60.

[0044] When the base end of the second lower beam 114 on the door trailing edge side is inserted into the tip end of the first lower beam 64 on the door leading edge side, the vertical roller 61 comes into contact with the inner surface of the first lower beam 64, and at the same time, the horizontal roller 59 and vertical roller 61 of the first lower beam 64 come into contact with the return portion 130 on the inner surface and the side surface, respectively, of the second lower beam 114. The second lower beam 114 moves in the X direction within the first lower beam 64 together with the second main beam 112 by its own vertical roller 61, while maintaining its orientation along the X direction by the horizontal roller 59 and vertical roller 61 of the first lower beam 64.

[0045] The second door 58 may further include a second additional beam 138. The second additional beam 138 is disposed below the second lower beam 114 in the Y direction. The second additional beam 138 is an inverted U-shaped member extending in the X direction, and has a pair of lower ends each provided with a return portion 130 that protrudes toward the inside of the opening. The second additional beam 138 has a vertical roller 61 as a linear motion mechanism at its end on the door leading side. The tip of the second additional beam 138 on the door leading side is connected to the second connecting portion 136.

[0046] When the base end on the trailing edge side of the second additional beam 138 is inserted into the tip end on the leading edge side of the first additional beam 104, the vertical roller 61 comes into contact with the inner surface of the first additional beam 104, and at the same time, the horizontal roller 59 and vertical roller 61 of the first additional beam 104 come into contact with the return portion 130 and side surface of the inner surface of the second additional beam 138, respectively. The second additional beam 138 moves in the X direction within the first additional beam 104 together with the second main beam 112 by its own vertical roller 61, while maintaining its orientation along the X direction by the horizontal roller 59 and vertical roller 61 of the first additional beam 104.

[0047] (1-4) Drive mechanism and interlocking mechanism The platform door device 10 includes a drive mechanism and an interlocking mechanism. The drive mechanism moves the first main beam 62 in the opening / closing direction using the driving force of a motor. The interlocking mechanism includes a first interlocking mechanism and a second interlocking mechanism. The first interlocking mechanism moves the second main beam 112 in the same direction as the first main beam 62 in conjunction with the first main beam 62. The second interlocking mechanism moves the first lower beam 64 and the first upper beam 60 in the same direction as the first main beam 62 in conjunction with the first main beam 62. As a result, the platform door device 10 moves the first main beam 62 in the opening / closing direction, thereby moving the second main beam 112, the first upper beam 60, and the second lower beam 114 in the same direction as the first main beam 62. When the second main beam 112 moves, the second upper beam 110 and the second lower beam 114 move integrally with the second main beam 112 via the door-end side connector 132. That is, the first door 56 and the second door 58 move integrally in the opening and closing direction with the first main beam 62 as a starting point.

[0048] 6, the drive mechanism has a motor 38, a first drive pulley 144, and a first drive belt 94. The second interlocking mechanism has a first interlocking pulley 146, a second interlocking pulley 148, a second interlocking belt 149 as an endless belt, a second drive pulley 150, and a second drive belt 102. Each of these will be described in order below.

[0049] The motor 38 is housed in a case 152 disposed within the motor housing 36, and transmits power to an output shaft 153 via a reducer (not shown). The case 152 shown in this figure has a rectangular parallelepiped shape, and has a through hole 154 formed in the front.

[0050] The output shaft 153 is exposed toward the front in the Z direction from a through hole 154 provided in the front surface of the case 152. The output shaft 153 is parallel to the Z direction, and a first drive pulley 144 and a first interlocking pulley 146 are fixed to the output shaft 153. The first drive pulley 144 and the first interlocking pulley 146 are arranged at a predetermined interval and rotate integrally with the output shaft 153. A pair of snub pulleys 156 are rotatably provided on the front surface of the case 152, sandwiching the first drive pulley 144 in the X direction. A first drive belt 94 is wound around the first drive pulley 144 via the pair of snub pulleys 156. The first drive belt 94 is arranged along the X direction on the outer surface of the bottom member 76 of the first main beam 62. The first drive belt 94 has an end on the door trailing side in the X direction fixed to the first door trailing side fixing portion 90, and an end on the door leading side in the X direction fixed to the first door leading side fixing portion 92.

[0051] The case 152 is provided with a bracket 158. The bracket 158 ​​is a plate-like member having flat surfaces parallel to the X and Y directions, and extends downward from the lower end of the case 152. The bracket 158 ​​is inserted into a through-hole 40 provided in the upper surface 33 of the first housing 32 and extends into the first housing 32. A driven shaft 160 is rotatably provided on the bracket 158. The driven shaft 160 is arranged parallel to the output shaft 153 with a predetermined distance therebetween in the Y direction. The driven shaft 160 is parallel to the Z direction, and the second interlocking pulley 148 and the second driving pulley 150 are fixed coaxially to the driven shaft 160. The second interlocking pulley 148 is arranged at a position overlapping the first interlocking pulley 146 in the Z direction. The second interlocking belt 149 is an endless belt that is wound around the first interlocking pulley 146 to the second interlocking pulley 148 so as to transmit power in the forward direction.

[0052] The second drive pulley 150 is disposed at a position overlapping the first drive pulley 144 in the Z direction. A pair of snub pulleys 156 are rotatably mounted on the bracket 158, sandwiching the second drive pulley 150 in the X direction. A second drive belt 102 is wound around the second drive pulley 150 via the pair of snub pulleys 156. The second drive belt 102 is disposed on the bottom surface of the first lower beam 64 along the X direction. The second drive belt 102 has an end on the door trailing side in the X direction fixed to the second door trailing side fixing part 98, and an end on the door leading side in the X direction fixed to the second door leading side fixing part 100.

[0053] The first interlocking mechanism 140 will be described with reference to Figure 7. The first interlocking mechanism 140 has a door-leading-side pulley 78, a door-trailing-side pulley 80, a first interlocking belt 82, a door case-side fixed part 162, and a beam-side fixed part 128. The first interlocking belt 82 is fixed to the door case-side fixed part 162 and the beam-side fixed part 128. The door case-side fixed part 162 is a plate-shaped member provided on an extension part 164, and fixes the first interlocking belt 82 to the extension part 164 by sandwiching the first interlocking belt 82 between itself and the extension part 164. The extension part 164 is fixed to the door case 12 further toward the door trailing side than the end of the first main beam 62 on the door trailing side in the opening and closing direction when the extension part 164 is in the fully open position. In this embodiment, the base end of the extension part 164 is fixed to the door case 12, and the door case-side fixed part 162 is provided at its tip. The extension portion 164 shown in this figure is a long member with its longitudinal direction in the X direction, and its base end is fixed to the inner surface of the door pocket 12 on the side 20 opposite the side on which the sliding door 14L is installed, and its tip is inserted into the first main beam 62 through the opening on the door trailing side of the first main beam 62 (Figures 1 and 2).

[0054] The positional relationship between the first interlocking belt 82, the door pocket-side fixed portion 162, and the beam-side fixed portion 128 will be explained based on the closed position (Fig. 7). In the closed position, the door pocket-side fixed portion 162 is located close to the trailing edge pulley 80 and is fixed to the first interlocking belt 82 located above each pulley. The beam-side fixed portion 128 is located close to the leading edge pulley 78 and the door pocket-side fixed portion 162 is fixed to the first interlocking belt 82 located below the trailing edge pulley 80. The portion of the first interlocking belt 82 that starts from the door pocket-side fixed portion 162, wraps around the leading edge pulley 78, and reaches the beam-side fixed portion 128 is called the first belt portion 82A. The portion of the first interlocking belt 82 that starts from the door pocket-side fixed portion 162, wraps around the trailing edge pulley 80, and reaches the beam-side fixed portion 128 is called the second belt portion 82B.

[0055] (2) Operation The platform door device 10 holds the sliding door 14L in the closed position in preparation for the entry of a railway vehicle or the like, and after the railway vehicle has stopped, slides the sliding door 14L to the open position in time with the railway vehicle door opening. Furthermore, in time with the railway vehicle door closing, the sliding door 14L slides to the closed position in preparation for the railway vehicle departing. Below, the operation from the closed position to the open position and the operation from the open position to the closed position will be explained in order.

[0056] (2-1) Movement from the closed position to the open position In the closed position (FIG. 1), the first door 56 is positioned furthest from the door pocket 12 toward the closed side, and the trailing edge pulley 80 is positioned closest to the door pocket side fixed portion 162 of the first main beam 62. The second door 58 is positioned furthest from the first door 56 toward the closed side.

[0057] The platform door device 10 starts the motor 38 to transmit power to the output shaft 153 (Figure 6). The power causes the output shaft 153 to rotate in one direction. As a result, the first drive pulley 144 and the first interlocking pulley 146 provided on the output shaft 153 rotate integrally with the output shaft 153. When the rotation direction of the output shaft 153 is a direction in which the first drive belt 94 on the closing side is wound up and unwound to the opening side, the first drive belt 94 is wound up on the closing side and unwound to the opening side as the first drive pulley 144 rotates. As a result, the first main beam 62 moves integrally with the first drive belt 94 to the opening side.

[0058] The first interlocking pulley 146 rotates integrally with the first drive pulley 144. The second interlocking belt 149 is wound around the first interlocking pulley 146 and the second interlocking pulley 148, so that the second interlocking pulley 148 rotates integrally with the first interlocking pulley 146. The second interlocking pulley 148 is mounted on a driven shaft 160. The driven shaft 160 is provided with a second drive pulley 150 that is integral with the second interlocking pulley 148. As a result, the second drive pulley 150 rotates integrally with the first drive pulley 144 in the same direction via the first interlocking pulley 146, the second interlocking belt 149, and the second interlocking pulley 148. As the second drive pulley 150 rotates, the second drive belt 102 is wound on the closing side and unwound to the opening side. As a result, the first lower beam 64 moves integrally with the second drive belt 102 to the opening side.

[0059] The first upper beam 60 is connected to the first main beam 62 by a first trailing edge connector 66 (FIG. 3), and therefore moves integrally with the first main beam 62 toward the opening side. If the first door 56 has a first additional beam 104, the first additional beam 104 is connected to the first lower beam 64 by a second trailing edge connector 68 (FIG. 4), and therefore moves integrally with the first lower beam 64 toward the opening side. In this way, the first upper beam 60, the first lower beam 64, and the first additional beam 104 move integrally with the first main beam 62 toward the opening side.

[0060] When the first main beam 62 moves toward the opening side, the trailing-end pulley 80 also moves toward the opening side together with the first main beam 62. Because the door pocket-side fixed portion 162 is fixed to the door pocket 12 by the extension portion 164 (FIG. 7), the distance between the door pocket-side fixed portion 162 and the trailing-end pulley 80 increases, and tension in the X-direction (arrow in FIG. 7) is generated in the second belt portion 82B in the opening direction. The tension in the second belt portion 82B applies a force in the opening direction to the beam-side fixed portion 128. Because the beam-side fixed portion 128 is fixed to the second main beam 112, the second main beam 112 moves toward the opening side as if pulled by the second belt portion 82B. In this way, the second main beam 112 moves toward the opening side in conjunction with the first main beam 62 (FIG. 8). The beam-side fixed portion 128, the guide portion 124, and the second main beam 112 move toward the opening side at the same speed as the first interlocking belt 82. Therefore, the guide portion 124 holds the pair of support portions 86 at a predetermined height while moving toward the opening side at the same speed as the first interlocking belt 82, which is in contact with the upper surface.

[0061] The second upper beam 110 and the second lower beam 114 are connected to the second main beam 112 by the door-end connector 132 (FIG. 1), and therefore move toward the opening side together with the second main beam 112. If the second door 58 has a second additional beam 138, the second additional beam 138 is connected to the door-end connector 132 and therefore moves toward the opening side together with the second upper beam 110 and the second lower beam 114. In this way, the second upper beam 110, the second lower beam 114, and the second additional beam 138 move toward the opening side together with the second main beam 112. In other words, the first door 56 and the second door 58 move toward the opening side together with the first main beam 62 as a starting point. Furthermore, the first door 56 and the second door 58 start moving toward the opening side at the same time, and reach and stop at the fully opened position at the same time. In this case, the second door 58 enters the first door 56 at the same speed as the speed at which the first door 56 moves in the opening direction. In other words, the second door 58 moves in the opening direction at twice the speed at which the first door 56 moves in the opening direction, relative to the door pocket 12.

[0062] (2-2) Movement from open position to closed position In the fully opened position, the first main beam 62, the first upper beam 60, the first lower beam 64 and the first additional beam 104 are all at their furthest points inside the door pocket 12, and the door-front-side pulley 78 is positioned closest to the door pocket-side fixed portion 162 of the first main beam 62. The second main beam 112, the second upper beam 110, the second lower beam 114 and the second additional beam 138 are at their furthest points inside the first main beam 62, the first upper beam 60, the first lower beam 64 and the first additional beam 104, respectively.

[0063] The platform door device 10 starts the motor 38 to transmit power to the output shaft 153 (Figure 6). The power causes the output shaft 153 to rotate in the opposite direction to the one direction, i.e., in the direction in which the first drive belt 94 on the opening side is wound up and unwound to the closing side. This causes the first drive pulley 144 and the first interlocking pulley 146 provided on the output shaft 153 to rotate integrally with the output shaft 153. As the first drive pulley 144 rotates, the first drive belt 94 is wound up on the opening side and unwound to the closing side. This causes the first main beam 62 to move integrally with the first drive belt 94 to the closing side.

[0064] The second drive pulley 150 rotates integrally with the first drive pulley 144 in the same direction via the first interlocking pulley 146, the second interlocking belt 149, and the second interlocking pulley 148. As the second drive pulley 150 rotates, the second drive belt 102 is wound on the open side and unwound on the closed side. As a result, the first lower beam 64 moves integrally with the second drive belt 102 to the closed side.

[0065] The first upper beam 60 is connected to the first main beam 62 by a first trailing edge connector 66 (FIG. 3), and therefore moves integrally with the first main beam 62 toward the closing side. If the first door 56 has a first additional beam 104, the first additional beam 104 is connected to the first lower beam 64 by a second trailing edge connector 68 (FIG. 4), and therefore moves integrally with the first lower beam 64 toward the closing side. In this way, the first upper beam 60, the first lower beam 64, and the first additional beam 104 move integrally with the first main beam 62 toward the closing side.

[0066] When the first main beam 62 moves toward the closing side, the door-edge-side pulley 78 also moves toward the closing side. Because the door pocket-side fixed part 162 is fixed to the door pocket 12 by the extension part 164, the distance between the door pocket-side fixed part 162 and the door-edge-side pulley 78 increases, and tension is generated in the first belt part 82A in the X direction toward the closing direction (arrow in FIG. 8). The tension in the first belt part 82A applies a force toward the closing direction to the beam-side fixed part 128. Because the beam-side fixed part 128 is fixed to the second main beam 112, the second main beam 112 moves toward the closing side as if pulled by the first belt part 82A. In this way, the second main beam 112 moves toward the closing side in conjunction with the first main beam 62 (FIG. 7). The beam-side fixed part 128, the guide part 124, and the second main beam 112 move toward the closing side at the same speed as the first interlocking belt 82. Therefore, the guide portion 124 moves toward the closing side at the same speed as the first interlocking belt 82 that is in contact with the upper surface, while holding the pair of support portions 86 at a predetermined height.

[0067] The second upper beam 110 and the second lower beam 114 are connected to the second main beam 112 by the door-end connector 132 (FIG. 1), and thus move integrally with the second main beam 112 toward the closing side. If the second door 58 has a second additional beam 138, the second additional beam 138 is connected to the door-end connector 132, and thus moves integrally with the second upper beam 110 and the second lower beam 114 toward the closing side. That is, the first door 56 and the second door 58 move integrally in the closing direction, starting from the first main beam 62. Furthermore, the first door 56 and the second door 58 start moving in the closing direction at the same time, and reach and stop at the closed position at the same time. In this way, the second upper beam 110, the second lower beam 114, and the second additional beam 138 move integrally with the second main beam 112 toward the closing side. In this case, the second door 58 advances from the first door 56 at the same speed as the speed at which the first door 56 moves in the closing direction. In other words, the second door 58 moves in the closing direction at twice the speed at which the first door 56 moves in the closing direction, relative to the door pocket 12.

[0068] (3) Action and effect The platform door device 10 is a two-stage system having a first door 56 supported in the door pocket 12 so as to be movable in the opening and closing direction, and a second door 58 supported on the first door 56 so as to be movable in the opening and closing direction. Therefore, as the first door 56 moves in the opening and closing direction relative to the door pocket 12, the second door 58 moves in the same direction as the first door 56 in conjunction with the first door 56, so the platform door device 10 can form a wider opening.

[0069] Both the first door 56 and the second door 58 are formed of multiple beams, allowing wind to pass between the beams. Therefore, the platform door device 10 can reduce the wind load on the first door 56 and the second door 58 compared to conventional plate-shaped door sections. Therefore, the platform door device 10 can simplify its foundation, making it easier to install.

[0070] The first upper beam 60, the first lower beam 64, and the first additional beam 104 move integrally with the first main beam 62 in the opening and closing direction. The second door 58 moves in the opening and closing direction in conjunction with the first main beam 62. That is, the first door 56 and the second door 58 start moving at the same time and finish moving at the same time. Therefore, the platform door device 10 can prevent the first door 56 and the second door 58 from colliding with each other, allowing the first door 56 and the second door 58 to open and close more smoothly.

[0071] The first lower beam 64 moves in the opening and closing direction in conjunction with the first main beam 62 via a second interlocking mechanism 142. The second interlocking mechanism 142 has a first interlocking pulley 146, a second interlocking pulley 148, a second interlocking belt 149, a second drive pulley 150, and a second drive belt 102.

[0072] The second interlocking mechanism 142 transmits power from the output shaft 153 to the driven shaft 160 via a second interlocking belt 149 passing through a through hole 40 provided in the upper surface of the first housing 32. For this reason, the platform door device 10 does not require a configuration that moves in the X direction between the first main beam 62 and the first lower beam 64, so it is possible to install other equipment on the upper surface 33 of the first housing 32. In other words, because the second interlocking mechanism 142 does not move in the opening and closing direction, the space inside the door pocket 12 can be used effectively.

[0073] By having the first additional beam 104 and the second additional beam 138, the platform door device 10 can further narrow the opening below the first lower beam 64 and the second lower beam 114.

[0074] (4) Variations The present invention is not limited to the above-described embodiment and can be modified as appropriate within the spirit and scope of the present invention. For example, in the above-described embodiment, the sliding door 14L arranged on the left side of the door pocket 12 is a two-stage door, and the sliding door 14R arranged on the right side of the door pocket 12 is a single-stage door, but the present invention is not limited to this. The sliding door 14L arranged on the left side of the door pocket 12 may be a single-stage door, and the sliding door 14R arranged on the right side of the door pocket 12 may be a two-stage door. Furthermore, as in the platform door apparatus 10A shown in FIG. 9, both sliding doors 14RA, 14L may be two-stage doors.

[0075] In the above embodiment, the output shaft 153 is parallel to the Z direction, but the present invention is not limited to this. For example, the output shaft may be arranged parallel to the Y direction. In this case, the output shaft extends to the first lower beam in the Y direction and has a first drive pulley and a second drive pulley. A first drive belt is wound around the first drive pulley. The first drive belt is fixed to the back member of the first main beam. A second drive belt is wound around the second drive pulley. The second drive belt is fixed to the back side of the first lower beam. By rotating the output shaft arranged parallel to the Y direction in this way using a motor, the first drive pulley and the second drive pulley rotate integrally with the output shaft. The first drive pulley winds the first drive belt, causing the first main beam to move in the opening / closing direction. The second drive pulley winds the second drive belt, causing the first lower beam to move integrally with the first main beam in the opening / closing direction. Therefore, the same effects as those of the above embodiment can be obtained. [Explanation of symbols]

[0076] 1 Platform 10, 10A Platform door device 12 Door pocket 14L, 14R sliding door 16 Front 18 Back 20 Side 22 Top side 24 bottom 26 Aperture 28 Main Rail 30 Lower rail 32 First cabinet 33 Top surface 34 Second cabinet 36 Motor housing 38 Motor 40 through holes 42 Operation section 44 Control Panel 46 Equipment 48 Upper beam 50 Main beam 52 Lower beam 54 additional beam 56 First Door 58 Second Door 59 Horizontal roller 60 First upper beam 61 Vertical Roller 62 1st main beam 64 First lower beam 66 First door end connector 68 Second door end connector 70 Front member 72 Back member 74 Top surface member 76 Bottom member 78 Door end pulley 80 Door end pulley 82 First interlocking belt 82A First Belt Section 82B Second belt section 86 Support part 90 1st door end side fixed part 92 First door end fixed part 94 First drive belt 96 Linear Guide 98 2nd door end side fixed part 100 Second door end fixed part 102 Second drive belt 104 First additional beam 106 Guide 108 Guide roller 110 Second upper beam 112 Second main beam 114 Second lower beam 116 Second front member 118 Second rear member 120 second upper surface member 122 Second bottom member 124 Guide part 126 Legs 128 Beam side fixing part 130 Return part 132 Door end connector 134 1st connection part 136 2nd connection part 138 Second Additional Beam 140 1st interlocking mechanism 142 Second interlocking mechanism 144 First drive pulley 146 First interlocking pulley 148 Second interlocking pulley 149 Second interlocking belt 150 Second drive pulley 152 cases 153 Output shaft 154 through hole 156 Snub pulley 158 Bracket 160 Driven axis 162 Door pocket side fixing part 164 Extension

Claims

1. A platform door device arranged along the edge of a platform, Door pocket and a first door supported in the door pocket; a second door supported by the first door; a drive mechanism that moves the first door in a direction in which the first door is opened or closed; an interlocking mechanism that moves the second door in the same direction as the first door in conjunction with the first door; Equipped with The first door has a first upper beam, a first main beam, and a first lower beam that extend in the opening and closing direction in this order in the up-down direction, the first upper beam, the first main beam, and the first lower beam are supported by the door pocket so as to be spaced apart in the up-down direction and movable in the opening and closing direction, The second door is a second upper beam supported by the first upper beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; a second main beam supported by the first main beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; a second lower beam supported by the first lower beam so as to be movable in the opening and closing direction and extending along the opening and closing direction; A door end side connector that connects the second upper beam, the second main beam, and the second lower beam, the first main beam is movable in the opening and closing direction by the drive mechanism, The interlocking mechanism includes: a first interlocking mechanism that moves the second main beam in the same direction as the first main beam in conjunction with the first main beam; a second interlocking mechanism that moves the first lower beam in the same direction as the first main beam in conjunction with the first main beam; a first door trailing edge connector that connects the first upper beam and the first main beam; A platform door device equipped with:

2. the drive mechanism includes a drive unit, a first drive pulley provided on an output shaft of the drive unit, and a first drive belt wound around the first drive pulley, The first drive belt is fixed to the first main beam along the opening / closing direction, The second interlocking mechanism is a first interlocking pulley provided on the output shaft; a driven shaft rotatably provided in the door pocket, a second drive pulley and a second interlocking pulley integrally provided on the driven shaft; a second drive belt wound around the second drive pulley; an endless belt wound around the first interlocking pulley and the second interlocking pulley, The platform door device according to claim 1, wherein the second drive belt is fixed to the first lower beam along the opening and closing direction.

3. The first door has a first additional beam further below the first lower beam, The first additional beam is supported by the door pocket so as to be movable in the opening and closing direction with a gap between the first additional beam and the first lower beam, the second door has a second additional beam that is supported by the first additional beam so as to be movable in the opening and closing direction and that extends along the opening and closing direction; The second additional beam is connected to the door end side connector, The platform door device according to claim 1, wherein the interlocking mechanism includes a second tail-end connector that connects the first lower beam and the first additional beam.

4. A platform door device as described in claim 1, wherein an operating unit is provided on the upper surface of the door pocket.

5. The platform door device according to claim 1, wherein a control panel is provided inside the door pocket, and the control panel is positioned below the first lower beam.

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