JP2013199225A - Safety fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety fence capable of suspending a long member such a rope having required tension, quickly and surely detecting an abnormal load applied to the long member or cutting of the long member, and enhancing safety of protection of a passenger or the like with a simple structure.SOLUTION: A safety fence 10, representatively a rope type safety fence, includes a rope 14 laid to form a loop between at least two driving pillars 11 and 12 erected at a predetermined interval. By arranging one rope 14 in a loop shape, a safety fence is obtained by a simple structure such that two upper and lower ropes are arranged in parallel with each other in a horizontal direction in the space region. Especially, required tension has been applied to the rope, thus providing sufficient resistance to a load added by a person. The configuration of a rope unit 20 having a rope is prepared with a very simple structure.

Description

  The present invention relates to a safety fence, and in particular, is used for a rope-type home fence or the like, and has a configuration capable of laying a long member such as a rope with a simple configuration and detecting a cutting state of the long member quickly and reliably. It relates to safety fences.

  In recent years, for example, a safety fence using a rope as a station platform fence has been proposed (Patent Document 1). This rope-type safety fence is installed with a rope that regulates and protects the passenger's movement toward the track side, preventing the passenger from falling from the station platform to the track. For example, this rope-type safety fence is provided with tension means such as weights at both ends of a plurality of ropes having a length substantially equal to the length of the train entering the station side edge of the station platform. It is installed in a structure that can move up and down with When the train is not on the station platform track, or when the train stops or departs from the platform, the rope is in a lower position and functions as a restricting member that protects the passenger safely. When a passenger tries to get on and off through a vehicle door that is open to a train that has entered and stopped at the station platform, the rope moves to an upper position, allowing the passenger to get on and off.

  Further, Patent Document 2 can be cited as a prior art document disclosing related prior art. Patent Document 2 discloses a safety device having a configuration that automatically detects cutting of a band. It has a structure in which electrical wiring for cutting detection is provided in the longitudinal direction of the band-shaped band. When the band is cut off, the detection electric signal flowing through the electric wiring is cut off, so that the cut of the band can be detected based on the cut off of the detection electric signal.

Special table 2008-526614 JP 2005-280805 A

The rope-type safety fence disclosed in Patent Document 1 has a large structure in which a rope having a length corresponding to the entire length of the train from the entrance to the exit of the platform is installed. Therefore, smooth raising / lowering operation of a long rope is not easy, and there is a big problem in safety. Also, since it is necessary to apply a large tension to a long rope, it is necessary to attach a heavy weight to both ends of the rope, so that the rope is likely to break, and safety when the rope cut occurs Countermeasures were extremely inadequate.
The safety device disclosed in Patent Document 2 is a mechanism for detecting the cutting of a belt provided in a relatively small safety device. For example, the safety device can be used as a rope to detect the cutting of a rope of a rope-type safety fence. It was not easy to provide electrical wiring, and it was difficult to apply practically.

  In view of the above problems, the object of the present invention is to construct a long member such as a rope having a simple structure and a required tension, and to remove an abnormal load applied to the long member or to cut the long member. It is to provide a safety fence that can quickly and surely detect and improve the safety of protecting passengers and the like.

  In order to achieve the above object, the safety fence according to the present invention is configured as follows.

  The first safety fence (corresponding to claim 1) is provided with a long member (such as a rope) constructed so as to form a loop between at least two pillars erected at intervals. It is a feature.

  In the safety fence described above, the safety fence can be realized with a simple structure in which one long member is drawn and two upper and lower long members are arranged in parallel in the lateral direction. The configuration of the long member arrangement unit provided with the long member can be made simply.

  In the above configuration, the second safety fence (corresponding to claim 2), preferably, at least two pillars include at least one driving pillar provided with a driving device that allows the long member to move up and down. It is characterized by that.

In the above configuration, the third safety fence (corresponding to claim 3) is preferably provided with the long member as a long member installation unit, and at least one end member of the long member installation unit is driven. The elongate member installation unit is supported by a drive device provided on the column so as to be vertically movable, and the long member installation unit is provided so as to be movable up and down by the drive device.
The long member is provided as a long member installation unit, and the end members on both sides of the long member installation unit are supported by a driving device provided on each of the two driving columns so as to be movable up and down. The unit is characterized in that it can be moved up and down by two driving devices.
With this configuration, it is possible to easily realize a structure in which a single long member is drawn and a necessary tension that can withstand a required load is applied to the long member, the configuration of the apparatus is simple, and maintenance is easy.

  In the above configuration, the fourth safety fence (corresponding to claim 4) preferably has two pulleys arranged at upper and lower positions on each of the two end members on both sides of the long member installation unit. The long member is arranged in a loop shape using a pulley.

  In the above configuration, the fifth safety fence (corresponding to claim 5) is preferably provided with at least two long member installation units. According to this configuration, two or more long member installation units are arranged between two drive columns and the like so as to be vertically movable at, for example, up and down positions, and each long member installation unit has a long length such as a rope. The members are installed in a loop.

  In the above configuration, the sixth safety fence (corresponding to claim 6) is preferably configured such that one end of the long member is fixed and the other end is interposed via a spring member and a tension sensor that applies tension to the long member. The tension sensor measures the tension and transmits a safety ensuring signal when an abnormal load load state or no load load state is detected. According to this configuration, it is possible to detect an abnormal load load state such as a person leaning on by one tension sensor and a no load load state at the time of cutting.

  In the above configuration, the seventh safety fence (corresponding to claim 7) is preferably configured such that the long member has conductivity, one end of the conductive long member is fixed, and the other end is the long member. It is fixed via a spring member that applies tension to the long member, and includes a weak power source and a disconnection detection circuit that allows a weak current to flow from one end to the other end of the long member. The disconnection detection circuit measures the weak current flowing through the long member, A safety ensuring signal is transmitted when no current is detected.

In the above configuration, the eighth safety fence (corresponding to claim 8) is preferably
The long member has conductivity,
One end of the long member is fixed, and the other end is fixed via a spring member and a tension sensor for applying tension to the long member,
Equipped with a weak power supply and a disconnection detection circuit that allows a weak current to flow from one end of the long member to the other
The tension sensor measures the tension,
The cutting detection circuit measures the weak current,
A safety ensuring signal is transmitted when the tension sensor detects an abnormal load load state or no load load state, or when the disconnection detection circuit does not detect a weak current.

  In the above configuration, the ninth safety fence (corresponding to claim 9) is preferably used as a railway home fence.

  The tenth safety fence (corresponding to claim 10) is preferably characterized in that, in the above configuration, the interval is a distance corresponding to the length of one train of a train.

  An eleventh safety fence (corresponding to claim 11) is preferably characterized in that, in the above configuration, the long member is a rope.

The safety fence according to the present invention has the following effects.
First, for example, two pillars (drive pillars, etc.) are erected at a distance corresponding to the length of one train, and the length of one rope or the like is between the two pillars. Since the length member is arranged to form a loop and the long member is installed in two steps in the lateral direction to form a safety fence, the safety fence can be realized with a simple structure.
Secondly, a long member such as a rope is drawn in a loop in the long member installation unit, and a tension force is applied to the rope with a spring member at the attachment structure portion of the rope, etc. Since a rope is attached to a rope or the like, the load can be reliably met when a human load is applied.
Third, by providing a tension sensor to constantly measure and monitor the load on a long member such as a rope, it is possible to quickly and reliably detect an abnormal load load applied to the rope or the like and the cutting of the rope or the like. Therefore, by outputting a safety ensuring signal, appropriate safety control can be performed, and the safety of subsequent passengers can be enhanced.
Fourthly, when the rope or the like has conductivity, it is possible to quickly and surely detect the rope or the like by adding a weak power source and a disconnection detection circuit, and output a safety ensuring signal. Therefore, appropriate safety control can be performed, and the safety of passengers and the like can be improved.

The typical embodiment of the safety fence which concerns on this invention is shown, and it is a safety fence using an electroconductive rope as a long member, Comprising: It is a front view which shows the state (closed state) which the said rope exists in a downward arrangement position is there. It is a front view which shows the state (open state) which has a rope in an upper arrangement position with the safety fence using a rope. It is a figure which shows the structure of a rope unit. It is a figure which shows the internal structure of a rope attachment structure part.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments (examples) of the present invention will be described below with reference to the accompanying drawings.

The safety fence according to the present embodiment will be described with reference to FIGS. In this safety fence, a fence is formed by elongating a long member at a specific distance interval. As the long member, a rope, a wire, a belt, a chain or the like having a required length is typically used. In this embodiment, a configuration example using a rope, that is, a rope-type safety fence (hereinafter referred to as “rope-type safety fence”) will be described.
The rope-type safety fence 10 is typically used as a rope-type home fence (railway platform fence), for example, installed on the track side edge of a station platform to prevent passengers from falling on the track, etc. Is done. The rope safety fence 10 is usually provided with two drive columns 11 and 12 having a straight shape. The two drive pillars 11 and 12 are fixedly installed upright on the floor 13 at a necessary interval. The drive columns 11 and 12 are columns having a function of supporting both sides of the rope 14 installed between the drive columns 11 and 12. Further, a driving device 15 for moving the rope 14 up and down in a timely manner is provided inside the driving columns 11 and 12. In addition, in FIG. 1 etc., the magnitude | size, thickness, etc. of the drive pillars 11 and 12 are drawn exaggeratingly. The driving columns 11 and 12 are support columns for supporting the rope 13. In this example, the driving columns 11 and 12 are referred to as “driving columns” because they are provided with a driving device 15 for moving up and down.

  For example, two ropes 14 are installed between the two drive columns 11 and 12. As shown in FIG. 3, the two ropes 14 shown in FIGS. 1 and 2 are formed by drawing a single rope 14 having a required length in a rope unit 20 in a loop shape. Here, the “rope unit” means an installation unit having a structure for arranging a long rope so as to form a loop and applying a necessary tension to the rope. The rope 14 shown in FIG. 1 and FIG. 2 is shown so that the two ropes 14 laid between the drive pillars 11 and 12 are arranged in parallel and spaced apart in the horizontal direction. Yes. Further, in FIG. 1, the rope 14 moves downward (arrow D1) and is in a lower arrangement position, and is erected with a required tension T1 applied by an external force (tensile force F1, shown in FIG. 4). Yes. The tension T1 applied to the rope 14 creates a tension state to counter this load when, for example, the passenger leans on or tries to jump out to the track side, and the rope 14 regulates an undesirable movement of the person. Functions as a member. In FIG. 2, the rope 14 moves upward (arrow D2) and is in an upper arrangement position. At this time, the tension T1 applied to the rope 14 is not changed. In the rope safety fence 10, the rope 14, that is, the rope unit 20 (shown in FIG. 3) is controlled by the driving device 15 so as to alternately move to the preset lower arrangement position and upper arrangement position. The In addition, the height of the drive pillars 11 and 12 is at least 2 m or more, for example.

  FIG. 1 shows a case where the rope 14 is located at a lower position and functions as a regulating member that regulates and protects a person's movement and behavior, that is, the rope-type safety fence 10 is closed. FIG. 2 shows a case where the rope 14 is located at the upper position and does not function as a direct restricting member, that is, the rope-type safety fence 10 is opened.

When the rope-type safety fence 10 is used as a rope-type platform fence for a station platform, the distance between the two drive columns 11 and 12 located on both sides is preferably equivalent to the length of one train. Distance (about 20 m). The heights of the drive pillars 11 and 12 are set so that the rope 14 moved to the upper position is positioned above the upper end of the train vehicle door.
In the rope-type safety fence 10 shown in FIGS. 1 and 2, the rope 14 is formed in a loop shape between the two drive columns 11, 12 and is constructed in a two-stage structure. In addition to 11 and 12, at least one other support column may be provided between the two drive columns 11 and 12. In addition, although an example in which two drive columns are provided has been described, at least one drive column is sufficient on either one side or an intermediate position of the interval.

  In the two drive columns 11 and 12 erected upright on the floor 13 with an interval, the lower interval and the upper interval are the same. The two drive columns 11 and 12 are installed in parallel.

  The rope 14 is a rope having a required tensile strength. In this embodiment, a wire rope made of metal (such as stainless steel wire) is used. The rope 14 is a conductive rope. In the following description, the rope 14 is referred to as a “wire rope 14”. The rope 14 is not limited to a metal one.

  Next, the rope unit 20 is demonstrated with reference to FIG. 3 and FIG. Reference numeral 21 is an end member disposed in the drive column 11, and reference numeral 22 is an end member disposed in the drive column 12. The end members 21 and 22 are preferably plate-like or frame-like members, and are connected to a movable member 15a that moves up and down the drive device 15 provided in the internal space of the drive pillars 11 and 12, respectively. Yes. For example, the movable member 15a is guided by a guide rail 15b and is configured to move up and down (elevating operation) with, for example, a linear motor or a drive wire. The movable members 15a in the drive columns 11 and 12 are controlled so as to always perform the same movement at the same height. For this reason, the end members 21 and 22 on both sides of the rope unit 20 are supported so as to move up and down while keeping the wire rope 14 horizontal based on the configuration of the driving device 15 in the driving columns 11 and 12. It will be.

  The end members 21 and 22 are each provided with two pulleys 21a, 21b, 22a, and 22b at the upper and lower positions. The end member 21 is provided with a rope attachment structure 23. One wire rope 14 is pulled out from the rope attachment structure portion 23 and arranged so as to be drawn into the rope attachment structure portion 23 by drawing it clockwise in the order of the upper pulleys 21a and 22a and the lower pulleys 22b and 21b. , Provided to make a loop shape. For this reason, the state where the two wire ropes 14 located up and down are constructed between the driving columns 11 and 12 as described above. In addition, the loop-shaped wire rope 14 arranged as described above is normally connected to the driving columns 11 and 12 through slits formed in the vertical direction on the inner wall surfaces facing each other of the two driving columns 11 and 12. It is pulled out to the space | interval area | region between 12, and is built in the said space | interval area | region. Inside the rope attachment structure 23, as shown in FIG. 4, one end 14A of the wire rope 14 is fixed by a fixing portion 23A, and the other end 14B is a coiled spring member 24, a tension sensor 25, a cutting detection circuit. 26 and fixed by a fixing portion 23A through a weak power source 27. More specifically, one end 14 </ b> A of the wire rope 14 is fixed to the fixing portion 23 </ b> A, and the other end 14 </ b> B is fixed to the fixing portion 23 </ b> A via the spring member 24 and the tension sensor 25. The other end 14B is coupled to the lower end of the spring member 24 in FIG. Thereby, the wire rope 14 is formed in the loop shape. Further, the weak power source 27 is connected by a conductive wire so that a weak current flows from one end to the other end of the loop-shaped wire rope 14 over the entire circumference, and the disconnection detection circuit 26 detects the presence or absence of the flow of the weak current flowing through the wire rope 14. They are connected with conductors so that they can.

  Based on the structure of the rope attachment structure 23, the tension T1 described above is applied to the entire wire rope 14 by the tensile force (external force) F1 of the spring member 24. The tension sensor 25 constantly measures the state of the tension T1 applied to the wire rope 14, and transmits measurement value data to a control device (not shown). When an abnormal load load state occurs on the wire rope 14, a detection signal corresponding to the abnormal load load state is transmitted, and when a no load load state is detected, a detection signal corresponding to the detection signal is transmitted. These detection signals S1 are signals that notify an “abnormal load load state” or “no load load state”, and are signals that require ensuring safety. The signal requesting safety ensuring is a safety ensuring signal, which is a basic signal serving as a drive stop signal, a warning signal, or the like output via the control device.

  Further, based on the structure of the rope attachment structure 23, the weak power source 27 passes a weak current through the wire rope 14, and the cutting detection circuit 26 measures the presence or absence of the weak current flowing through the wire rope 14. When a weak current is flowing, it is a normal state, and the wire rope 14 is in an uncut state. When the weak current does not flow, the wire rope 14 is cut. The cutting detection circuit 26 constantly measures the state of the weak current flowing through the wire rope 14 and transmits the measurement value data to the control device. When a state in which a weak current does not flow in the wire rope 14 occurs, a corresponding detection signal is transmitted. This detection signal S2 is a signal for informing the “wire rope cutting state” and a signal for requesting safety.

  According to the configuration of the above-described embodiment, when an abnormal load is generated on the wire rope 14 in the rope-type safety fence 10, the tension sensor 25 can quickly and reliably detect the load, and when the wire rope 14 is cut, the tension sensor 25 and / or the cutting detection circuit 26 can be detected quickly and reliably.

  In the above embodiment, the example of the wire rope 14 has been described. However, a non-conductive rope 14 can also be used. In this case, generally, a configuration for flowing a weak current cannot be provided. Therefore, the “abnormally loaded state” or “no loaded state” is preferably detected only by the tension sensor 25. However, also in this case, it is possible to provide a configuration (cut detection circuit 26 and weak power supply 27) for supplying the above-described weak current by adding a conducting wire to the rope 14.

  Instead of using the coil-like spring member 24, a unit having a rope winding mechanism or a rope winding motor is provided in the rope mounting structure 23 instead to provide the wire rope 14 with the necessary tension T1. Also good.

In the above embodiment, an example in which one rope unit 20 (elongate member installation unit) is provided between the two drive pillars 11 and 12 has been described. It is also possible to provide two or more. In each rope unit 20, the rope 14 is arranged in a loop shape.
Further, the rope unit 20 can be configured to be provided with a cross (cloth), a mesh member, a wire mesh, or the like between the two ropes 14 positioned above and below arranged in a loop shape so as to fill a gap between the ropes. .
Further, in the above-described embodiment, the configuration in which the cutting of the rope 14 is detected using a weak current is shown. However, as another cutting detection means having a similar configuration, an optical fiber is disposed along the rope 14 and this light is detected. It is also possible to provide a light source that allows light to flow through the fiber, and to detect the cutting of the rope 14 based on whether or not the optical fiber is cut (whether or not light is conducted).

  The configurations, shapes, sizes, and arrangement relationships described in the above embodiments are merely schematically shown to the extent that the present invention can be understood and implemented, and the numerical values and the compositions (materials) of the respective components Is just an example. Therefore, the present invention is not limited to the described embodiments, and can be variously modified without departing from the scope of the technical idea shown in the claims.

  The safety fence according to the present invention is used as, for example, a rope-type home fence for a station platform, and regulates the movement of passengers and the like with a long member such as a rope, and reliably prevents the passengers or the like from falling on the track, Furthermore, it is used as a safety fence that reliably detects the cutting state of a rope or the like or an abnormal load application state.

10 Rope type safety fence 11, 12 Drive pillar 13 Floor 14 Rope (wire rope)
14A, 14B Rope end 15 Driving device 15a Movable member 15b Guide rail 20 Rope unit 21, 22 End member 21a, 21b Pulley 22a, 22b Pulley 23 Rope attachment structure 23A, 24B Fixing portion 24 Spring member 25 Tension sensor 26 Disconnection detection circuit 27 Weak power supply

Claims (11)

  A safety fence comprising a long member constructed so as to form a loop between at least two pillars standing at intervals.   The safety fence according to claim 1, wherein the at least two pillars include at least one driving pillar provided with a driving device that allows the elongate member to move up and down.   The elongate member is provided as an elongate member installation unit, and at least one end member of the elongate member installation unit is supported by the drive device provided on the drive column so as to be vertically movable, and the elongate member installation unit is provided. The safety fence according to claim 2, wherein the unit is provided so as to be movable up and down by the driving device.   Each of the two end members on both sides of the long member installation unit has two pulleys disposed at upper and lower positions, and the long member is disposed in a loop shape using the pulleys. The safety fence according to claim 3.   The safety fence according to claim 3 or 4, wherein at least two long member installation units are provided.   One end of the elongate member is fixed, and the other end is fixed via a spring member and a tension sensor that applies tension to the elongate member, and the tension sensor measures the tension and detects an abnormal load state or load. The safety fence according to any one of claims 1 to 5, wherein a safety ensuring signal is transmitted when a no-load state is detected.   The long member has conductivity, one end of the conductive long member is fixed, and the other end is fixed via a spring member that applies tension to the long member, and from one end of the long member A weak power source for supplying a weak current to the other end and a disconnection detection circuit are provided, the disconnection detection circuit measures the weak current flowing through the long member, and transmits a safety ensuring signal when no weak current is detected. The safety fence described in any one of Claims 1-5. The long member has conductivity,
One end of the elongate member is fixed, and the other end is fixed via a spring member and a tension sensor for applying tension to the elongate member,
A weak power source and a disconnection detection circuit for passing a weak current from one end of the long member to the other end,
The tension sensor measures the tension,
The cutting detection circuit measures the weak current,
The safety ensuring signal is transmitted when the tension sensor detects an abnormal load load state or no load load state, or when the cutting detection circuit does not detect a weak current. The safety fence described in any one item.   The safety fence according to any one of claims 1 to 8, wherein the safety fence is used as a railway fence.   The safety fence according to claim 9, wherein the interval is a distance corresponding to a length of one train.   The safety fence according to claim 1, wherein the long member is a rope.

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