JP2016141183A - Lifting type platform safety fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting type platform safety fence which enables simplification, miniaturization, and cost reduction of a strut structure, further an increase in distance between struts, by strengthening rope tension in a descent state that needs rope blocking force, and by weakening rope tension upon lifting up and down to alleviate lateral force applied on the strut.SOLUTION: A lifting type platform safety fence is configured so that the tension of a rope 13 suspended by lifting type struts 11A, 11B and lifted up and down by the lifting movement of a strut movable part 11-2 of the lifting type struts may be adjusted to proper values in accordance with positions of a rope with a tension drive mechanism 14 provided in coupling parts on both ends of the rope. The tension drive mechanism 14 adjusts and controls rope tension to proper values in accordance with height positions of the strut movable part, that is, rope height positions when the strut movable part 11-2 is lifted up and down.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lifting home safety fence, and in particular, has a structure that lifts and lowers the rope by a column movable part that lifts and retracts the telescopic column, and when the rope is in a lowered state, the rope tension is increased to increase the rope blocking force, The present invention relates to an elevating home safety fence that weakens the rope tension and reduces the lateral force applied to the struts when raising and lowering the rope.

  In recent years, a rope-type home safety fence has been proposed (Cited document 1). A rope-type home safety fence is a kind of home door using a lifting rope. Passing multiple ropes horizontally along the edge of the railway line of the station platform, raising and lowering the rope according to the movement of the train entering the railway line, and the fall of the passenger on the station platform by the rope placed in the lowered state Preventing and ensuring its safety. In the platform safety fence disclosed in the cited document 1, a plurality of columns are provided along the edge of the station platform, and a plurality of ropes are suspended by these columns. The plurality of ropes are arranged horizontally and in parallel. Each column is a telescopic column, and includes a column fixing unit fixed to the floor and a column movable unit provided so as to move up and down with respect to the column fixing unit. The supporting column movable part is housed in the supporting column fixing part when descending, and protrudes further upward from the upper part of the supporting column fixing part when ascending. The plurality of ropes are connected to and supported by the movable column support. When the support movable part is lowered, the plurality of ropes are also lowered at the same time, and function as a safety protection fence in the final lowered state. That is, the home safety fence is closed. At this time, a necessary high tension is applied to the rope, and a rope blocking force is generated to safely protect the rope even when the passenger leans. When the support movable part is lifted, the plurality of ropes are lifted at the same time, and are opened as a home safety fence in the final lifted state. As a result, the passenger can get on and off the train arriving at the station platform.

JP 2014-91410 A (FIG. 1 etc.)

  In a conventional lift home safety fence using a rope, tension is always applied from both ends of the rope in order to ensure the rope blocking force. In the case of an elevating home safety fence that uses an extendable prop that moves the prop movable part up and down at the same time when the rope is raised and lowered (when opening and closing), the prop in the state where the force is applied in the lateral direction of the prop due to the rope tension It is necessary to move up and down vertically without tilting itself. For this reason, in the case of a structure in which the strength of the column itself is increased, the structure becomes complicated, it is difficult to reduce the size and weight, and the cost reduction is not easy. Further, when the interval between the columns is increased, the degree of freedom is limited, and this is an obstacle to the need to increase the interval.

  In view of the above-mentioned problems, the object of the present invention is to increase the rope tension in the lowered state where the rope blocking force is required, and to reduce the lateral force applied to the support column by lowering the rope tension when moving up and down. An object of the present invention is to provide an elevating type home safety fence that simplifies the structure, reduces the size, and reduces the cost, and further increases the distance between the columns.

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

  The first elevating type home safety fence (corresponding to claim 1) is a tension provided on the connecting portions at both ends of the rope, which is suspended by the elevating type support column and moved up and down by the elevating operation of the movable unit of the elevating type support type column. It is configured by adjusting to an appropriate value according to the position of the rope by the adjusting mechanism.

  In the above-described lifting home safety fence, a tension adjusting mechanism is provided at both ends of the rope, and the tension adjusting mechanism is a rope depending on the height position of the supporting column movable part, that is, the height position of the rope when the supporting column moving part is moved up and down. Adjust the tension to an appropriate value. Thereby, particularly, it is possible to exert an effective rope blocking force only when the rope moves to a lower position and functions as a protective fence, and it is possible to improve passenger safety. On the other hand, when the rope moves up and down, the rope tension can be reduced, and the rope can be lifted and lowered without applying an excessive load to the column.

  In the above-described configuration, the second liftable home safety fence (corresponding to claim 2) preferably increases the rope tension after the rope descends to generate a rope blocking force, and increases the rope tension when the rope is raised and lowered. It is characterized by weakening. According to this configuration, the structure of the support can be simplified, and the distance between the support can be increased.

  In the above-described configuration, the third liftable home safety fence (corresponding to claim 3) is preferably configured such that the tension adjusting mechanism includes a coupling end portion of the rope and a rope support coupling portion coupled to the coupling end portion. It is a screw coupling type tension adjusting mechanism provided between them, and the screw coupling type tension adjusting mechanism is characterized in that the tension of the rope is made variable by the rotation operation of the rope support coupling part. According to this configuration, since the screw coupling type tension adjusting mechanism is used, the tension adjusting mechanism can be realized with a simple structure.

  In the above structure, the fourth elevating type home safety fence (corresponding to claim 4) is preferably provided with a bar type home fence at both ends and a rope type home fence between the bar type home fences at both ends. The bar-type home fence bar and the rope-type home fence rope are connected to each other with a screw coupling type tension adjusting mechanism, and the end of the bar functions as a rope support coupling part. According to this configuration, it is possible to easily assemble the screw coupling type tension adjusting mechanism by combining the rope type home fence and the bar type home fence.

  In the above configuration, the fifth elevating-type home safety fence (corresponding to claim 5) is preferably characterized in that the tension adjusting mechanism adjusts the rope tension to an appropriate value in conjunction with the lifting and lowering operation of the rope. And In this configuration, the rope tension can be smoothly adjusted to an appropriate value according to the height position by interlocking the rope tension adjustment by the tension adjustment mechanism with the lifting / lowering operation of the rope.

  The sixth liftable home safety fence (corresponding to claim 6) is composed of a liftable bar home fence and a liftable rope home fence, and the liftable bar and the liftable rope are connected to each other. It is characterized by using together.

  According to the elevating type home safety fence according to the present invention, tension adjusting mechanisms are provided at both ends of the raising and lowering rope, and the tension adjusting mechanism is located at the height position of the supporting column movable unit when the supporting column moving unit is moved up and down, that is, the height of the rope. Since the rope tension is adjusted and controlled to an appropriate value according to the position, the rope tension is increased only when the rope moves to the lower position and functions as a protective fence, and an effective rope blocking force is generated. Thus, the safety of passengers can be ensured, and when the rope is raised and lowered, the rope tension can be reduced so that the rope can be lifted and lowered without applying an excessive load to the column.

  Furthermore, according to the present invention, the rope tension is increased in the lowered state where the rope blocking force is required, the lateral tension applied to the column is reduced by decreasing the rope tension during ascent and descent, the structure of the column is simplified, Miniaturization and cost reduction can be realized, and further, the distance between the columns of the liftable rope can be increased by using the liftable rope and the liftable bar in combination.

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the whole structure of the raising / lowering type home safety fence which concerns on embodiment of this invention is shown, (A) is a front view which shows an up state (open state), (B) is a down state (closed state). FIG. It is a perspective view which shows the external appearance of a support | pillar. It is a perspective view which shows one structural example of a tension adjustment mechanism. It is a system block diagram of a tension adjustment mechanism. The front view of the whole structure of the raising / lowering type home safety fence which concerns on other embodiment is shown, (A) is a front view which shows an up state (open state), (B) shows a down state (closed state). It is a front view.

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

  With reference to FIG. 1, the whole structure of the raising / lowering type home safety fence which concerns on typical embodiment of this invention is demonstrated. The elevating type home safety fence according to the present embodiment is a rope elevating type home safety fence, and is configured to elevate and lower the rope based on an elevating operation of an up and down support (extensible support). In FIG. 1, the state (A) shows an open state in which the rope rises and functions as a passage, and the state (B) shows a closed state in which the rope descends and functions as a protective safety fence. When the rope is raised and in the open state, the train is completely stopped at the station platform and passengers get on and off through the open vehicle door. When the rope descends and is in the closed state, when the train enters or stops, when the train departs, there is no train on the track (track), and the closed state causes the passenger to fall on the track. Or contact with the train.

  In FIG. 1, the one part area of the raising / lowering type home safety fence is shown. The section is a section in which two struts (or posts) are arranged as an example. The distance between the columns is, for example, a distance corresponding to the length of one train in the train, but can be arbitrarily set as necessary. As an example, it is 10-13 m. Also, the number of columns is arbitrary. It is also possible to provide a plurality of sections by increasing the number of columns. The struts are arranged along the edge of the station platform. In the example shown in FIG. 1, the illustration of the configuration of each outer portion of the two columns is omitted for convenience of explanation.

  In FIG. 1, as an example of a basic configuration, a lifting rope type home safety fence is composed of two support columns 11A and 11B. FIG. 1 shows an elevating rope type home safety fence viewed from the platform side toward the track (track) side. This home safety fence is provided in a state where a plurality of columns (only two columns 11A and 11B in the illustrated example) are erected at a predetermined interval along the entire edge of the station platform 12 on the track side. The number of columns is determined according to the length of the station platform, the length of the train, the length of one vehicle, and the like. In FIG. 1, a support column 11A located on the right side and a support column 11B positioned on the left side are shown.

  As shown in FIGS. 1A and 1B, for example, three ropes 13 are bridged between the columns 11A and 11B. The three ropes 13 suspended between the columns 11A and 11B are provided parallel to each other and horizontally. The number, thickness, material, etc. of the rope 1 are arbitrary. The rope 13 is moved up and down by a lift drive device (not shown in FIG. 1) provided in the columns 11A and 11B. In FIG. 1A, the three ropes 13 are all raised to the uppermost position, and the three ropes 13 move upward while maintaining a horizontal state, and there is a gap between them. The position is controlled so as to be narrowed and it rises. In this moving state, the space between the columns 11A and 11B is opened, and the home safety fence is opened. On the other hand, in FIG. 1B, the three ropes 13 are all lowered to the lowest position, and the three ropes 13 move downward while maintaining a horizontal state, and the space between them is The position is controlled to widen and descend. In this moving state, the space between the columns 11A and 11B is restricted and closed by the rope 13, and the home safety fence is closed.

  The lifting / lowering operation of the rope 13 is performed by lifting / lowering struts 11A and 11B having an expansion / contraction mechanism. Each of the columns 11A and 11B includes a column fixing unit 11-1 fixed to the floor of the station platform 12, and a column movable unit 11-2 provided so as to be moved up and down through the upper opening of the column fixing unit 11-1. It consists of and. The appearance of the columns 11A and 11B is shown in FIG. When the rope 13 descends, the column movable part 11-2 is lowered so as to be housed inside the column fixing unit 11-1, and is arranged inside the column fixing unit 11-1. This state is shown in FIG. When the rope 13 rises, the support column movable unit 11-2 extends from the top of the support column movable unit 11-2 in a state of extending from the inside of the support column fixing unit 11-1. This state is shown in FIG. The three ropes 13 are connected to the internal structure portion of the column movable portion 11-2 through the slit-shaped opening portion 11-3. The expansion / contraction mechanism built in the columns 11A and 11B functions as a lifting / lowering drive device for the rope 13.

  In the above, the tension applied to the rope 13 is set to a high value when the rope 13 is lowered and is at the lowest position, and the tension applied to the rope 13 is set to a weak value when the rope 13 moves up and down (up or down). Yes. Thereby, when the tension applied to the rope 13 is lowered, the tension is increased to increase the rope blocking force, and when the rope 13 is moved up and down, the tension is weakened to reduce the lateral force applied to the columns 11A and 11B. . For this reason, the structure of the telescopic columns 11A and 11B can be simplified, and the size and the manufacturing cost can be reduced. The change in the tension of the rope 13 is preferably performed when the rope 13 moves to the lowest position. The change and adjustment of the tension of the rope 13 is performed by a tension adjusting mechanism 14 provided by using a connecting portion (joining portion) at each end of each of the three ropes 13 based on a mechanism described later.

  Next, an example of the configuration of the tension adjusting mechanism 14 will be described with reference to FIG. The tension adjusting mechanism 14 is a screw coupling type tension adjusting mechanism (or a screw type tension adjusting mechanism). In FIG. 3, as an example, the end portion of the rope 13 is provided with a male screw portion 21, and the round rod-shaped rope support portion 22 provided on the column movable portion 11-2 side is provided with a female screw portion 23. . Usually, the male screw portion 21 and the female screw portion 23 are coupled, but in FIG. A protective cover (not shown in FIG. 3) is provided around the rope support portion 22 in a state where the male screw portion 21 and the female screw portion 23 are screw-coupled. The round rod-shaped rope support portion 22 is rotatably provided in a direction D1 (clockwise or counterclockwise) around the axis. A rotation drive device (indicated by reference numeral 33 in FIG. 4) for rotating the rope support portion 22 is provided inside the column movable portion 11-2. The male screw portion 21 of the rope 13 is inserted into and screwed into the female screw portion 23 of the rope support portion 22. The male screw portion 21 is designed with a relatively long dimension so as to ensure a required moving distance with respect to the end portion of the rope 13. Based on the screwing relationship (screw connection relationship) between the male screw portion 21 of the rope 13 and the female screw portion 23 of the rope support portion 22, a connecting portion (connecting portion) of the rope 13 is formed, and the tension adjusting mechanism 14 is Composed.

  In the screwed relationship between the male screw portion 21 of the rope 13 and the female screw portion 23 of the rope support portion 22, for example, when the rope support portion 22 is rotated counterclockwise by a rotation driving device, the male screw portion 21 is turned into the female screw portion. 23 is pulled into the interior. When both ends of the rope 13 are pulled by a similar mechanism, the tension of the rope 13 is increased. When the rope support portion 22 is rotated clockwise by the rotation driving device, the male screw portion 21 is pushed out from the inside of the female screw portion 23. When both ends of the rope 13 are pushed out by a similar mechanism, the tension of the rope 13 is weakened. In response to the rotation operation of the rope support portion 22 in the direction D1, the female screw portion 21 moves straight in the direction D2 (retraction / extrusion direction). In this way, the tension adjusting mechanism 14 is configured by the screwing relationship between the male screw portion 21 of the rope 13 and the female screw portion 23 of the rope support portion 22 and the rotation driving device. In order to enable smooth movement in the screwed relationship between the male screw portion 21 of the rope 13 and the female screw portion 23 of the rope support portion 22, a ball screw structure is preferable. It is also possible to provide the male screw portion 21 and the female screw portion 23 with the screwing relationship reversed.

  With reference to FIG. 4, the system configuration | structure of the tension adjustment mechanism 14 and its control content are demonstrated. An expansion / contraction mechanism 31 for raising and lowering the support movable part 11-2 is provided inside the support fixing part 11-1 of the support 11A and 11B. This expansion / contraction mechanism 33 raises / lowers the three ropes 13 through the expansion / contraction operation of the columns 11A and 11B. A driving device and a moving mechanism are provided inside the telescopic mechanism 31. The telescopic mechanism 31 functions as an elevating drive device that elevates and lowers the three ropes 13. The expansion / contraction operation of the expansion / contraction mechanism 31 is controlled by the control device 32. The control device 32 is also configured to take in information on the amount of expansion / contraction operation of the expansion / contraction mechanism 31. The moving position of the rope 13 can be known from the amount of expansion / contraction operation. Reference numeral 33 denotes the rotational drive device that rotates the rope support 22. The operation of the rotary drive device 33 is controlled based on a control signal from the control device 32. The rotation driving device 33 rotates the rope support portion 22 that supports all or any one of the three ropes 13 in the direction D1, that is, clockwise or counterclockwise at an appropriate timing. Specifically, the rotation drive device 33 is based on the control signal given from the control device 32 (when the rope 13 is at the lowest position), on the condition that the rope 13 has moved to the lowest position, The rope support portion 22 of the rope 13 is rotationally driven so that the rope tension becomes high. Further, the rotation drive device 33 sets the rope support portion 22 of the rope 13 on the condition that the rope 13 is moved up and down based on a control signal (during the expansion / contraction operation, that is, during the lifting operation) given from the control device 32. Rotate to reduce the rope tension.

  As described above, according to the liftable home safety fence that lifts and lowers the rope with the telescopic support columns 11A and 11B, the rope 13 is lowered and closed by rotating the rope support portion 22 of the tension adjusting mechanism 14. In some cases, the rope tension is increased to increase the rope blocking force, and while the rope 13 is moved up and down, the rope tension is weakened to reduce the lateral force applied to the columns 11A and 11B. In this configuration example, the adjustment of the rope tension by the tension adjustment mechanism 13 and the up-and-down movement of the column movable part 11-2 by the expansion and contraction mechanism 31, that is, the up-and-down movement of the rope 13 are not linked. However, the adjustment of the rope tension by the tension adjustment mechanism 13 and the up-and-down movement of the movable column 11-2 by the expansion and contraction mechanism 31 (up-and-down movement of the rope 13) are linked, and the rope tension is continuously changed according to the height position of the rope 13. It can also be adjusted to change.

  Next, a liftable home safety fence according to another embodiment of the present invention will be described with reference to FIG. FIG. 5 is a view similar to FIG. 1, and an embodiment in which a bar elevating type home safety fence is added to the rope elevating type home safety fence shown in FIG. It is. In FIG. 5, elements that are substantially the same as the elements described in FIG. 1 (including some modified portions) are assigned the same reference numerals. The elevating type home safety fence according to the present embodiment is a bar / rope elevating type home safety fence, and is configured to elevate and lower the bar and rope at the same time based on the elevating action of a vertically extending and retracting support (extensible support). Has been. In FIG. 5, the state of (A) shows an open state in which the bar and rope rise and function as a passage, and the state of (B) shows a closed state in which the bar and rope descend and function as a protective safety fence. Yes.

  In FIG. 5, 11A and 11B are support | pillars, 11-1 is a support | pillar fixing | fixed part, 11-2 is a support | pillar movable part, 12 is a station platform, 13 is a rope, 14 is a tension adjustment mechanism. The struts 11A and 11B are composed of a strut fixing portion 11-1 and a strut movable portion 11-2, and are telescopic struts. In the pillars 11A and 11B, not only the slit-like opening 11-3 on the side on which the rope 13 is pulled out, but also a similar slit-like opening is formed in the vertical direction on the opposite side.

  Further, struts 111A and 111B are provided on the outer sides of the struts 11A and 11B, respectively. The struts 111A and 111B are also extendable struts, and incorporate substantially the same configuration as the struts 11A and 11B. That is, each of the columns 111A and 111B includes a column fixing part 111-1 and a column movable part 111-2. The column movable part 111-2 is provided so as to move up and down with respect to the column fixing unit 111-1. Then, three bars 112 are arranged between the column 111A and the column 11A and between the column 111B and the column 11B, respectively. Each of the three bars 112 is arranged corresponding to the three ropes 13 described above, and is connected to the corresponding rope 13 via the tension adjusting mechanism 14 described above. The thickness, shape, and material of the bar are arbitrary.

  In the elevating type home safety fence of the present embodiment, the structure of the rope support portion 22 of the tension adjusting mechanism 14 described with reference to FIG. 3 is provided as the end portion structure of the bar 112. In other words, the end portions of the three bars 112 on the rope 13 side are made of the same structure as the rope support portion 22 shown in FIG. Therefore, each end portion of the three bars 112 is screwed with the male threaded portion 21 of the corresponding rope 13, and each bar 112 is provided to be driven to rotate in the direction D1. Further, three bars 112 are provided so as to move up and down in the same manner as the three ropes 13 between the support pillar 11A and the support pillar 111A and between the support pillar 11B and the support pillar 111B. The raising and lowering operations of the three bars 112 on both sides and the three ropes 13 on the center are performed synchronously.

  Since it is configured as described above, a rope lifting type home safety fence based on the rope 13 is formed between the columns 11A and 11B as described above, and between the column 11A and the column 111A on the outside, the column 11B and A bar lifting type home safety fence based on the bar 112 is formed between the columns 111B. Further, when the bar 112 descends or when the bar 112 moves up and down, the strength of the tension of the rope 13 is appropriately adjusted based on the rotational operation of the bar 112 as in the rotational operation of the rope support portion 22 described above. Can be adjusted.

  According to the elevating type home safety fence according to the above embodiment, the bar elevating type home safety fence and the rope elevating type home safety fence can be used in combination, and the rope tension can be adjusted by rotating the bar. . Further, according to the structure of the home safety fence using both the bar lifting type and the rope lifting type shown in FIG. 5, the struts 11 </ b> A and 11 </ b> B and the struts 111 </ b> A and 111 </ b> B contribute to the spanning arrangement of the rope 13. The tension of 13 can be distributed to each strut, the rope support force by the rope struts 11A and 11B can be strengthened, and as a result, the maximum distance of the rope type home safety fence can be greatly increased compared to the conventional device. Is demonstrated.

  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 elevating platform safety fence according to the present invention is installed between a train entering the platform at the station platform and the home passenger, and depending on the operation status of the train, the elevating platform safety fence is lifted up and down with a telescopic support column or closed. It is opened and used to ensure passenger safety.

11A, 11B Column 11-1 Column fixing unit 11-2 Column movable unit 11-3 Slit-shaped opening 12 Station platform 13 Rope 14 Tension adjusting mechanism 21 Male screw unit 22 Rope support unit 23 Female screw unit 31 Telescopic mechanism 32 Control device 33 Rotation Drive Unit 111A Post 111B Post 111-1 Post Fixing Unit 111-2 Post Moving Unit 112 Bar

Claims (6)

  The tension of the rope suspended by the lifting / lowering strut and moving up / down by the lifting / lowering operation of the movable portion of the lifting / lowering strut is adjusted to an appropriate value according to the position of the rope by the tension adjusting mechanism provided at the connecting portion at both ends of the rope. Liftable home safety fence characterized by that.   The lift home safety fence according to claim 1, wherein after the rope is lowered, the rope tension is increased to generate a rope blocking force, and the rope tension is weakened when the rope is lifted.   The tension adjusting mechanism is a screw coupling type tension adjusting mechanism provided between a coupling end portion of the rope and a rope support coupling portion coupled to the coupling end portion. The elevating-type home safety fence according to claim 1 or 2, wherein the tension of the rope is made variable by the rotation operation of the support coupling portion.   A bar-type home fence is provided at both ends, and a rope-type home fence is provided between the bar-type home fences at both ends, and the bar of the bar-type home fence and the rope of the rope-type home fence are connected to the portion. The elevating type home safety fence according to claim 3, wherein a screw coupling type tension adjusting mechanism is provided, and an end portion of the bar functions as the rope support coupling portion.   The elevating type home safety fence according to claim 1, wherein the tension adjusting mechanism adjusts the tension of the rope to an appropriate value in conjunction with an elevating operation of the rope.   A liftable home safety fence comprising a liftable bar home fence and a liftable rope home fence, wherein the liftable bar and the liftable rope are connected to each other, and the bar and the rope are used together.

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