Platform fence

Abstract

To provide a platform fence capable of reducing a burden on wind pressure of a passing train.SOLUTION: The platform fence 100 is provided with a platform fence body 30 and a door body 20 moving back and forth from ends 32, 33 of the platform fence body 30 to the side, the platform fence body 30 has a front cover member 71 covering the platform fence body 30 on the platform side, and an evacuation space SP of the door body 20 is exposed on the track RL side.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a platform fence with a door body that opens and closes. [Background technology]

[0002] Patent Document 1 discloses a platform screen door device that improves the strength of the door pocket by reinforcing the frame material of the door pocket with a reinforcing material and a door pocket surface material. The door pocket surface material is provided on the front and back sides of the door pocket.

[0003] In the device of Patent Document 1, fastening means such as bolts and fixing means such as adhesives are used to prevent the door pocket from loosening or shifting position, but wind pressure from passing trains and other factors can put strain on the fastening means, which could cause damage to the parts. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-245840 Summary of the Invention

[0005] The present invention has been made in consideration of the above points, and aims to provide a platform fence that reduces the burden on trains against wind pressure from passing trains.

[0006] In order to achieve the above-mentioned object, the platform fence of the present invention comprises a platform fence main body and a door body that moves forward and backward laterally from the end of the platform fence main body, and the platform fence main body has an outer cover member that covers the platform fence main body on the platform side, exposing the evacuation space for the door body on the track side.

[0007] With the platform fence, by removing the cover member on the back side of the platform fence main body and exposing the evacuation space of the door body, wind pressure from passing trains is applied to the front cover member. Because the front cover member is separated from the passing train by the thickness of the platform fence main body, wind pressure acting on the front cover member can be reduced. This makes it possible to reduce the impact of wind pressure on the platform fence without adding any additional parts. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an overall conceptual diagram illustrating a platform fence according to an embodiment. [Figure 2] This is a rear view illustrating the platform fence elements among the platform fences. [Figure 3] This is a diagram showing the frame-shaped member of the platform fence main body removed from the platform fence element. [Figure 4] This is an oblique view illustrating a platform fence element. [Figure 5] A diagram illustrating the frame-shaped member of the platform fence main body. [Figure 6] FIG. 10 is a diagram illustrating train wind pressure acting on a platform fence. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Embodiment] Hereinafter, with reference to the drawings, a platform fence according to an embodiment of the present invention will be described.

[0010] FIG. 1 is a conceptual diagram illustrating the platform fence 100. FIG. 1 is a diagram of the platform fence 100 as viewed from the platform PF side or the platform side. In this specification, the platform PF side of the platform fence 100 is considered to be the front side of the platform fence 100. Furthermore, the track RL side of the platform fence 100 is considered to be the back side of the platform fence 100.

[0011] The platform fence 100 separates the station platform PF from the track RL. The platform fence 100 is also called a movable platform fence. The platform fence 100 is made up of a predetermined number of platform fence elements 10 lined up in a row to cover a predetermined area of ​​the platform PF. Each platform fence element 10 has a door body 20 and a platform fence main body 30. In the example of Figure 1, in each platform fence element 10, a pair of door bodies 20 extend from end openings 35a, 36a of the platform fence main body 30, and the door bodies 20 close the boarding and alighting passageway, thereby forming a fence-like device that extends along the edge of the platform PF and opens and closes at appropriate positions.

[0012] The door body 20 is a door element that is housed within the platform fence main body 30 and is provided so that it can be freely inserted and removed. The door body 20 has a main door body 21 that moves laterally forward and backward from a first end 32, which is one end of the platform fence main body 30, and a secondary door body 22 that moves laterally forward and backward from a second end 33, which is the other end of the platform fence main body 30. Normally, the operations of the main door body 21 and the secondary door body 22 are controlled so that they open and close in conjunction with each other.

[0013] The platform fence main body 30 is fixed to the floor of the platform PF and has a door pocket structure that holds the door body 20 so that it can move back and forth. The platform fence main body 30 has an electric circuit system 40 and the like inside a housing 31.

[0014] A guide mechanism 50 and a transmission mechanism 60 are provided between the door body 20 and the platform fence main body 30.

[0015] In FIG. 1, the platform fence element 10 on the right side is referred to as the first platform fence element 10A, and the platform fence element 10 on the left side is referred to as the second platform fence element 10B. The first platform fence element 10A has a first platform fence main body 30A and a first door body 20A that moves from the end of the first platform fence main body 30A (first end 32 on the left side in the figure) to the side where the second platform fence element 10B is located. The second platform fence element 10B has a second platform fence main body 30B and a second door body 20B that moves from the end of the second platform fence main body 30B (second end 33 on the right side in the figure) to the side where the first platform fence element 10A is located. The first platform fence main body 30A and the second platform fence main body 30B are both platform fence main bodies 30 and are arranged adjacent to each other. The first door body 20A is called the main door body 21 of the first platform fence main body 30A, and the second door body 20B is called the secondary door body 22 of the second platform fence main body 30B.

[0016] In terms of opening and closing, the first door body 20A and the second door body 20B cooperate to function like sliding doors that open and close synchronously. In FIG. 1 , the first door body 20A and the second door body 20B abut against each other in a closed state, and when they move away from each other in an open state, they are stored in a housing 31 of the platform fence main body 30. Although not shown, in this embodiment, the first door body 20A and the second door body 20B stored in the same platform fence main body 30 can be arranged side by side in a direction perpendicular to the forward and backward direction within the housing 31. Therefore, in the open state, the first door body 20A and the second door body 20B are overlapping within the same housing 31.

[0017] The relationship between the first platform fence element 10A and the second platform fence element 10B as described above holds true between any pair of adjacent platform fence elements 10.

[0018] FIG. 2 is a rear view illustrating the first platform fence element 10A of the platform fence 100. FIG. 2 is a view of the platform fence 100 as seen from the track RL side. FIG. 3 is a view of the first platform fence element 10A shown in FIG. 2 with the frame member 72 of the first platform fence main body 30A removed. FIG. 4 is a perspective view illustrating the first platform fence element 10A shown in FIG. 2. FIG. 5 is a view illustrating the frame member 72 of the first platform fence main body 30A. The first platform fence element 10A will be described below, but the same applies to the second platform fence element 10B.

[0019] 2 to 4, the first platform fence main body 30A has a housing 31 including a bottom member 34, a pair of side support members 35, 36, a pair of inner frames 37, 38, an upper member 39, a top plate member 31d, a front cover member 71, and a frame-shaped member 72. The first platform fence main body 30A or the housing 31 is hollow inside, and has an evacuation space SP in which the door body 20 is stored when it is in the open state and retracted.

[0020] The bottom member 34 is fixed to the platform PF by a fixing member (not shown). In practice, the bottom member 34 is fixed to an embedded base (not shown) that is embedded in the platform PF. This fixes the first platform fence main body 30A to the platform PF. The bottom member 34 has legs 34k on the floor side of the platform PF.

[0021] The pair of side support members 35, 36 extend vertically from both ends of the bottom member 34 in the longitudinal direction or the door opening / closing direction, perpendicular to the door opening / closing direction, and support the upper member 39. The side support members 35, 36 have end openings 35a, 36a that allow the door 20 to move forward and backward. The pair of inner frames 37, 38 are frames that are disposed near the center of the housing 31, specifically, near the outside of a first opening OP1 of a frame-shaped member 72 (described later). The inner frames 37, 38 extend vertically from the bottom member 34, perpendicular to the door opening / closing direction, to form an evacuation space SP, and support the upper member 39. The upper member 39 is disposed at the top of the housing 31. Note that the upper member 39 may be omitted. In this case, the top plate member 31d is directly attached to the side support members 35, 36 and the inner frames 37, 38.

[0022] The front cover member 71 is a flat plate member and is provided on the platform PF side of the housing 31. The front cover member 71 covers the entire housing 31 of the first platform fence main body 30A on the platform PF side, and the inside of the housing 31 is not exposed. On the other hand, the front cover member 71 is exposed on the track RL side when the door body 20 is in a closed state. In other words, the first platform fence main body 30A exposes the evacuation space SP of the door body 20 on the track RL side.

[0023] The frame-shaped member 72 is provided on the track RL side of the housing 31 in place of a back-side cover member. In other words, the first platform fence main body 30A does not have a back-side cover member that covers the entire housing 31. The frame-shaped member 72 covers the base area 25, including the base 24 of the door body 20 when it is in the closed state, on the track RL side. This prevents the wind pressure from a passing train from being directly applied to the base 24 of the door body 20 when it is in the closed state, thereby preventing deterioration of the door body 20. The frame-shaped member 72 may or may not completely cover the base 24 of the door body 20.

[0024] As shown in Figures 2, 4, and 5, the frame-shaped member 72 has multiple openings OP through which the front cover member 71 is exposed. This makes it possible to protect the components inside the platform fence main body 30 while ensuring the exposed area of ​​the front cover member 71. The openings OP include a first opening OP1 located in an area including the center of the frame-shaped member 72, and two second openings OP2 located on the door body 20 side. Note that one second opening OP2 may be located on only one side of the frame-shaped member 72.

[0025] The frame-shaped member 72 has a sensor cover 73 that houses an obstacle detection sensor 43 (described later), and a motor cover 74 that houses a driving force generating device 44 (described later), specifically, motors 44a and 44b.

[0026] The sensor cover 73 is disposed above the second opening OP2 on the side opposite to the direction of train travel, at a position corresponding to the obstacle detection sensor 43. The sensor cover 73 protects the obstacle detection sensor 43 while ensuring an exposed area of ​​the front cover member 71.

[0027] The motor cover 74 is disposed below the two second openings OP2 at a position corresponding to the motors 44a, 44b. The motor cover 74 protects the motors 44a, 44b while ensuring an exposed area of ​​the front cover member 71.

[0028] The frame-shaped member 72 has wing members WM that protrude from the second opening OP2 outward in the short direction of the first platform fence main body 30A. The inclusion of the wing members WM makes it possible to prevent passengers from entering the track RL side of the platform fence main body 30. In the example shown, the wing members WM are located inside the second opening OP2, which is closer to the center of the first platform fence main body 30A, and above the center of the second opening OP2.

[0029] Returning to Figure 1 etc., in each platform fence body 30, the electrical circuit system 40 is a component used to control and drive the platform fence elements 10, and enables the electrically operated opening and closing of the door body 20. The electrical circuit system 40 includes a control device 41, indicator lights 42, an obstacle detection sensor 43 (see Figure 2), a driving force generator 44, etc. Although not shown, the electrical circuit system 40 also includes an emergency open button for opening the door body 20 from the track RL side or the train side in an emergency.

[0030] Of the electrical circuit system 40, the control device 41 is disposed on a circuit board (not shown) and fixed within a top plate member 31d provided on the upper side of the platform fence main body 30. This allows the platform fence main body 30 to secure an exposed area for the front cover member 71, while allowing the control device 41 to be disposed in a location where it is not subjected to wind pressure from passing trains.

[0031] The electrical circuit system 40 provided in the series of platform fence elements 10 is connected via a communication line CC to a general control device 107 provided separately on or near the platform PF. The control device 41 includes a computer, receives opening / closing signals and the like from the general control device 107, and controls the operation of the platform fence elements 10.

[0032] The indicator light 42 is disposed on the top plate member 31d. The indicator light 42 operates under the control of the control device 41 and indicates the open / closed state of the door body 20. For example, the indicator light 42 lights up when the door body 20 is open and goes out when the door body 20 is closed. The indicator light 42 also lights up when an abnormality occurs in the platform fence 100.

[0033] The obstacle detection sensor 43 shown in FIG. 2 is disposed on the track RL side of the platform fence main body 30 and is covered with a sensor cover 73. The obstacle detection sensor 43 is an optical sensor that detects obstacles such as people or objects present in the detection space between the rear surface of the platform fence 100 and the train. The obstacle detection sensor 43 is, for example, a three-dimensional scanner or an infrared sensor. Data obtained by the obstacle detection sensor 43 is output to the control device 41 and processed as appropriate to determine whether or not an obstacle exists.

[0034] The driving force generating device 44 is disposed below the platform fence main body 30 and is covered with a motor cover 74. The driving force generating device 44 generates a driving force to move the door body 20. The driving force generating device 44 has a first motor 44a that drives the main door body 21 and a second motor 44b that drives the secondary door body 22.

[0035] The guide mechanism 50 has, for example, a rail 51 provided on the door body 20 side and a sliding member 52 supported by the housing 31. The sliding member 52 includes a roller, an adjustment jig, etc., and is movable relatively along the rail 51, allowing the door body 20 to move in the ±X directions, i.e., lateral movement, relative to the housing 31. The rail 51 and the sliding member 52 are provided at corresponding positions on the upper and lower parts of the door body 20, respectively, allowing the door body 20 to move smoothly laterally, i.e., to open and close smoothly. The upper guide mechanism 50 has, for example, a combination of the rail 51 with a groove and a cam follower or the like as the sliding member 52. The lower guide mechanism 50 is, for example, a linear guide, and has a combination of the rail 51 and a guide block or the like with a groove as the sliding member 52.

[0036] The guide mechanism 50 may be one in which the rail 51 is fixed to the housing 31 and the sliding member 52 is fixed to the door body 20. Alternatively, the lower rail 51 may be provided at the bottom of the door body 20, and the guide block of the sliding member 52 may support the rail 51 from below.

[0037] The transmission mechanism 60 has an open-end timing belt 61 fixed at one end to the door body 20 and at the other end to the housing 31, and a plurality of pulleys 62 around which the timing belt 61 is wound. One of the plurality of pulleys 62 is connected to a driving force generator 44 and transmits the driving force of the driving force generator 44 to the door body 20. Specifically, the transmission mechanism 60 and the driving force generator 44 are provided corresponding to the main door body 21 and the secondary door body 22, respectively. As a result, the driving force of the first motor 44a is transmitted to the main door body 21 via the pulley 62 and the timing belt 61, and the driving force of the second motor 44b is transmitted to the secondary door body 22 via the pulley 62 and the timing belt 61, so that both door bodies 20 can be displaced to desired positions in the lateral direction, i.e., the ±X direction, relative to the platform fence main body 30.

[0038] In the above, the driving force generating device 44 and the transmission mechanism 60 function as a driving device 91 or a driving mechanism 92 that displaces the door body 20 relative to the platform fence main body 30 via a timing belt 61. The open-end type timing belt 61 makes it easy to gather the driving mechanism 92 and other components in one place, making it easier to secure space within the platform fence main body 30.

[0039] Fig. 6 is a diagram illustrating train wind pressure P caused by the passage of a train, which is one of the loads acting on the platform fence 100. As shown in Fig. 6, when a train passes, the platform fence 100 is subjected to train wind pressure P, which is pressure generated on the platform fence 100 due to pressure fluctuations.

[0040] Train wind pressure P (unit: Pa) is expressed by the following formula: P=α·ρ·D·V 2 / Y 2 … (1) however, α: coefficient ρ: Air density (kg / m 3 ) D: Train cross-sectional area (m 2 ) V: Train speed (m / sec) Y: Distance from the center of the train to the platform fence 100 (m)

[0041] The housing 31 of the platform fence 100 has an opening OP in the frame-shaped member 72 on the track RL side, so that most of the train wind pressure P is applied to the front cover member 71. The front cover member 71 is located farther from the passing train TR than the rear surface of the housing 31 by a distance W (= Ya - Yb) corresponding to the thickness of the housing 31. In the distance Y, the distance from the center of the train to the front cover member 71 is defined as Ya, and the distance from the center of the train to the frame member 72 is defined as Yb. As shown in equation (1), the train wind pressure P is inversely proportional to the square of the distance Y from the source, the passing train TR. As a result, the front cover member 71 generates less wind pressure than the frame member 72. In this way, the platform fence 100 of this embodiment reduces the effects of wind pressure by increasing the distance from the source of the train wind pressure P without adding any components.

[0042] According to the platform fence 100, by removing the cover member on the back side of the platform fence main body 30 and exposing the evacuation space SP of the door body 20, wind pressure from a passing train TR passing over the platform PF is applied to the front cover member 71. The front cover member 71 is separated from the passing train TR by the thickness of the platform fence main body 30, so the wind pressure acting on the front cover member 71 can be reduced. This makes it possible to reduce the effect of wind pressure on the platform fence 100 without adding any additional parts.

[0043] 〔others〕 The present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit and scope of the present invention.

[0044] In the above, the shapes and structures of the door body 20 and the platform fence main body 30 are merely examples, and the present invention can be applied to various types of platform fence elements 10 or platform fences 100 that use a timing belt 61 to drive the door body 20 to open and close.

[0045] In the above embodiment, the size, shape, number, arrangement, etc. of the openings OP of the frame-shaped member 72 can be changed as appropriate. Also, the frame-shaped member 72 may be omitted. In this case, the obstacle detection sensors 43, the driving force generators 44, etc. may be made waterproof, or their arrangements may be changed so that the obstacle detection sensors 43, the driving force generators 44, etc. are not directly subjected to wind pressure.

[0046] In the above embodiment, the size, shape, number, arrangement, etc. of the wing members WM can be changed as appropriate.

[0047] In the above embodiment, the size and frame structure of the housing 31 can be changed as appropriate. [Explanation of symbols]

[0048] 10, 10A, 10B... Platform fence element, 20, 20A, 20B... Door body, 21... Main door body, 22... Secondary door body, 24... Base, 25... Base region, 30, 30A, 30B... Platform fence main body, 31... Housing, 31d... Top plate member, 34... Bottom member, 35, 36... Side support member, 37, 38... Inner frame, 39... Upper member, 40... Electrical circuit system, 41... Control device, 42... Indicator light, 43... Obstacle detection sensor, 44... Driving force generating device, 44a, 44b... motor, 50... guide mechanism, 51... rail, 52... sliding member, 60... transmission mechanism, 61... timing belt, 62... front cover member, 72... frame-shaped member, 73... sensor cover, 74... motor cover, 91... driving device, 92... driving mechanism, 100... platform fence, OP, OP1, OP2... opening, PF... platform, RL... track, SP... evacuation space, TR... passing train

Claims

1. It comprises a platform fence body and a door body that moves laterally from the end of the platform fence body, The platform fence body has a surface cover member that covers the platform fence body on the platform side, and exposes the evacuation space of the door body on the track side. Platform fence.

2. The front cover member is exposed on the track side when the door body is in a closed state. The platform fence according to claim 1.

3. The platform fence main body has a frame-shaped member on the track side that covers a base area including the base of the door body when in a closed state, The platform fence according to claim 1.

4. A control device for controlling the operation of the door body is provided in a top plate member provided on the upper side of the platform fence body, The platform fence according to claim 1.

5. The frame-shaped member has a plurality of openings through which the front cover member is exposed. The platform fence according to claim 3.

6. The frame-shaped member has a motor cover on the lower side that houses a motor. The platform fence according to claim 3.

7. The frame-shaped member has a sensor cover on the upper side that houses an obstacle detection sensor. The platform fence according to claim 3.

8. The opening has a first opening arranged in a region including the center of the frame-shaped member and a second opening arranged on the door body side, The frame-shaped member has a wing member protruding from the second opening. The platform fence according to claim 5.

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