JP5840396B2 - Gate device - Google Patents

Description

  The present invention relates to a gate device that restricts the passage of people, vehicles, and the like at entrances and exits, and more particularly to a gate device that is installed in a station platform and prevents passengers from entering the track due to falling from the station platform.

  Conventionally, in order to prevent passengers from getting on and off the station platform due to, for example, falling from the station platform, railroad companies are proceeding with installation of fall prevention fences along the side edges of the station platform. As this fall prevention fence, there exists a movable fence disclosed by patent document 1, for example.

  The movable fence currently disclosed by patent document 1 has installed the fixed support | pillar on both sides of the entrance / exit. Moreover, the movable support | pillar is attached to each fixed support | pillar so that sliding to an up-down direction with respect to the fixed support | pillar is possible. Further, a plurality of stop bars are arranged in the vertical direction between the movable struts and spanned in the horizontal direction. The uppermost stop bar is fixed to the movable support column, but the other stop bars are slidable in the vertical direction with respect to the movable support column.

  This movable fence is in a closed state that prevents passengers from entering the track due to falling from the station platform, etc., and an open state that secures a passage for passengers to get on and off the train that stops at the station platform. An opening / closing operation for switching the state is performed. The closed state is a state where the movable column is positioned at the lower limit position with respect to the fixed column and each of the stop bars other than the uppermost stage is positioned at the lower limit position with respect to the movable column. The open state is a state in which the movable column is positioned at the upper limit position with respect to the fixed column, and each of the stop bars other than the uppermost stage is positioned at the upper limit position with respect to the movable column.

  When the movable fence is in a closed state, the uppermost stop bar is positioned at a height of about 130 cm from the floor of the station platform, and the lowermost stop bar is at a height of about 60 cm from the floor of the station platform. To position. The top-level stop bar prevents adult passengers from getting on the railroad track by falling over from the station platform. The lowermost stop bar prevents passengers such as infants and wheelchair users from entering the track by passing under the uppermost stopbar and falling off the station platform.

  In addition, when the movable fence is in an open state, the lowermost stop bar is located at a height of about 200 cm from the floor of the station platform, and allows passengers to get on and off the trains that stop at the station platform. There is no hindrance.

  Furthermore, the movable fence is designed to prevent objects that are located around the stop bar (passenger / passenger etc.) with a transmissive or reflective optical sensor to prevent the stop bar sliding in the vertical direction from coming into contact with the passenger. ) Is detected, and when an object is detected, the opening / closing operation is stopped.

International Publication No. 2011/024612

  However, in the configuration in which the object is detected by the optical sensor, there may be a blind spot where the object cannot be detected. In order to improve safety, it is necessary to quickly stop the opening / closing operation when the stop bar comes into contact with the object during the opening / closing operation.

The movable fence described in Patent Document 1 described above is configured to slide the movable column vertically with respect to the fixed column at the time of transition between the closed state and the open state. Therefore, the restraining bar spanning between the movable struts is not only when sliding vertically with respect to the movable struts but also when sliding the movable struts vertically with respect to the fixed struts. Move in the direction. The fixed support and the movable support are made of steel material having a higher rigidity than the restraining bar, and the weight thereof is large. A driving source that slides the movable support column in the vertical direction requires a larger driving force than a driving source that slides the stop bar in the vertical direction. For this reason, when the movable column is slid vertically with respect to the fixed column, the contact between the object and the restraining bar can be accurately detected by the load fluctuation of the drive source that slides the movable column vertically. I could not.

  The object of the present invention is to accurately detect contact between an object and a restraining member that slides in the vertical direction together with the movable column even when the movable column is slid in the vertical direction with respect to the fixed column. An object is to provide a gate device with higher performance.

  The gate device of the present invention is configured as follows in order to solve the above problems and achieve the object.

  The fixed struts are erected on both sides of the entrance / exit. The movable support column is attached to each fixed support column so as to be slidable in the vertical direction with respect to the fixed support column. Further, the restraining member is slidably moved in the vertical direction between the movable support columns. A movable support | pillar drive part slides a movable support | pillar to an up-down direction with respect to a fixed support | pillar. Therefore, when the movable column driving unit slides the movable column up and down with respect to the fixed column, the restraining member slides up and down together with the movable column. Further, the restraining member driving unit slides the restraining member in the vertical direction with respect to the movable support column.

Moreover, a detection part detects the change of the position of the up-down direction of the stop member with respect to a movable support | pillar. When the control member driving unit stops the vertical sliding of the control member with respect to the movable column and the movable column driving unit slides the movable column up and down with respect to the fixed column, the detection unit When a change in the vertical position of the restraining member relative to the movable column is detected, it is determined that the restraining member has contacted the object. When the restraining member comes into contact with the object, the position (height) in the vertical direction with respect to the movable column changes due to the stress acting at that time.
The restraining member driving unit slides the restraining member in the vertical direction with respect to the movable column by the driving force of the stopping member driving motor, and the movable column driving unit is movable with respect to the fixed column by the driving force of the movable column driving motor. Slide the column up and down. Further, the stopping member driving motor has a driving force larger than that of the movable column driving motor. And a detection part detects the displacement of the up-down direction of the stop member with respect to a movable support | pillar by the load fluctuation | variation of a stop member drive motor. For example, the detection unit detects the vertical displacement of the restraining member relative to the movable support column by the rotation of the rotation shaft of the restraining member drive motor.
When the position of the stop member changes in the vertical direction with respect to the movable column, the control unit determines that the stop member has contacted the object.

  Therefore, even when the driving force of the movable column driving unit that slides the movable column up and down with respect to the fixed column is large, the contact between the restraining member and the object can be accurately detected.

  Moreover, it is preferable that the control unit is configured to stop the movable column driving unit from sliding in the vertical direction of the movable column with respect to the fixed column when it is determined that the restraining member is in contact with the object.

Further, since the stopping member driving unit is configured to slide the stopping member in the vertical direction with respect to the movable column by the driving force of the stopping member driving motor , the detecting unit detects the rotation of the rotation shaft of the stopping member driving motor. With a simple configuration, it is possible to detect a change in the position of the restraining member in the vertical direction with respect to the movable support column, thereby suppressing an increase in the cost of the apparatus main body.

  According to this invention, when the movable column driving unit slides the movable column in the vertical direction with respect to the fixed column, the detection accuracy of the contact between the restraining member sliding in the vertical direction together with the movable column and the object is detected. The safety can be further improved.

It is the schematic which shows the example of installation of the fall prevention fence in a station platform. It is the schematic which shows a movable fence. It is a block diagram which shows the structure of the principal part of a movable fence. It is the schematic explaining the mechanism which slides a movable support | pillar to an up-down direction. It is the schematic explaining the mechanism which slides a lower side stop bar to an up-down direction. It is a figure explaining opening and closing operation of a movable fence. It is a figure explaining opening and closing operation of a movable fence.

  Hereinafter, embodiments of the gate device according to the present invention will be described. Here, a description will be given by taking, as an example, a fall prevention fence that prevents passengers waiting for a train at the station platform from entering the track due to falling from the station platform.

  FIG. 1 is a schematic diagram illustrating an installation example of a fall prevention fence in a station platform. FIG. 1A is a plan view of the station platform as viewed from above, and FIG. 1B is a plan view of the side end of the station platform as viewed from the opposite side. As shown in FIG. 1, this fall prevention fence has a plurality of movable fences 1 installed at appropriate intervals (2 m to 3 m intervals) along the side edges of the station platform. Each movable fence 1 corresponds to a gate device referred to in the present invention.

  Trains have different vehicle door intervals depending on the type of train. Regardless of the type of train that stops at the installed station platform, this fall prevention fence is made wider than the width of the train door that stops at the station platform so that each movable fence 1 faces the train vehicle door. Yes. By opening the movable fence 1, a passage for passengers getting on and off the train is secured. Further, by closing the movable fence 1, it is possible to prevent passengers and the like at the station platform from falling from the station platform and entering the track.

  In addition, the fixed bar 2 is bridged between the adjacent movable fences 1 in order to prevent the passengers at the station platform from entering the track between the adjacent movable fences 1 due to falling from the station platform. ing. In FIG. 1, an example is shown in which two fixed bars 2 are lined up and down between adjacent movable fences 1.

  In addition, the movable fence 1 should just oppose the whole vehicle door of the train for every kind of train which stops at a station platform, and even if it opposes including the part which is not a train door, there is no problem in particular.

  FIG. 2 is a plan view of the movable fence as seen from the station platform side facing the vehicle door of the train. FIG. 2 shows a state where the movable fence is closed (closed state).

  The movable fence 1 includes two fixed columns 11, two movable columns 12, an upper stop bar 13, and a lower stop bar 14.

  The fixed support 11 is erected on the side end of the station platform. A pedestal is attached to the station platform at the installation position of the fixed support 11. Between the two fixed columns 11 is a passage for passengers getting on and off the train. In other words, the two fixed columns 11 are installed so as to cover the positions where the vehicle doors of each train face each other regardless of the type of the train that stops at the station platform. The fixed column 11 has a height of about 130 to 150 cm. The fixed support 11 is a steel material that can withstand a lean load of about 100 kgf.

  The two movable struts 12 are attached to the fixed struts 11 so as to be slidable in the vertical direction with respect to the fixed struts 11. The movable column 12 is attached to the back surface (line side) of the fixed column 11. The movable strut 12 is a steel material having a height of about 130 cm, and its weight is several tens of kilograms.

  The upper stop bar 13 is stretched between the two movable columns 12. The upper stop bar 13 is fixed near the upper end portion of the movable column 12. The upper stop bar 13 is located at a height of about 130 cm from the floor of the station platform when the movable fence 1 is in the closed state. Therefore, even when an adult is in the closed state, it is relatively difficult to get over the upper stop bar 13 and enter the track. In other words, when the vehicle is in the closed state, passengers can be prevented from getting over the upper stop bar 13 and entering the track.

  The lower stop bar 14 is attached between two movable struts 12 so as to be slidable in the vertical direction with respect to the movable struts 12. The lower stop bar 14 corresponds to a stop member referred to in the present invention. The lower stop bar 14 is located at a height of about 60 cm from the floor of the station platform when the movable fence 1 is in the closed state. Therefore, when it is in a closed state, an infant (height of a 2-year-old child is 80-90 cm) and a wheelchair user (wheelchair armrest height of about 60 cm) pass between the station platform floor and the lower stop bar 14. Thus, entering the track can be prevented.

  The upper stop bar 13 and the lower stop bar 14 are cylindrical pipes, for example, a PC pipe having an outer diameter of 48 mm and a thickness of 3.5 mm, and has a weight of several kilograms.

  FIG. 3 is a block diagram showing the configuration of the main part of the movable fence.

  The movable fence 1 includes a control unit 50, a movable column drive control unit 51, a movable column drive motor 52, a stop bar drive control unit 53, a stop bar drive motor 54, a communication unit 55, and a notification unit 56. It is equipped with.

  The controller 50 controls the operation of each part of the movable fence 1. As described above, the movable fence 1 has the fixed struts 11 installed on both sides of the passage for passengers, and the movable struts 12 are attached to the fixed struts 11 so as to be slidable in the vertical direction. The movable fence 1 is provided with a movable column driving motor 52 for each fixed column 11. The movable strut drive control unit 51 includes a movable strut drive motor 52 provided on the two fixed struts 11 so that the two movable struts 12 are displaced at substantially the same height in accordance with an instruction from the control unit 50. Control in conjunction.

  FIG. 4 is a schematic diagram illustrating a mechanism for sliding the movable support column in the vertical direction. The fixed column 11 has an endless belt 64 stretched around pulleys 62 and 63 arranged in the vertical direction. A motor shaft gear 60 attached to the rotating shaft of the movable column driving motor 52 is connected to a driving pulley gear 61 that rotates one pulley 62 (driving pulley 62). The driving pulley 62 is rotationally driven via the motor shaft gear 60 and the driving pulley gear 61 by the rotational driving of the movable column driving motor 52. The endless belt 64 rotates in the vertical direction as the drive pulley 62 rotates. The movable strut 12 is connected to an endless belt 64, and slides up and down with respect to the fixed strut 11 as the endless belt 64 rotates. The movable column drive motor 52 can rotate in the forward direction (the direction in which the movable column 12 rises) and in the reverse direction (the direction in which the movable column 12 descends). In this embodiment, the movable strut drive motor 52 is a 200 W AC servomotor.

  The encoder 69 detects the amount of rotation of the rotary shaft of the movable column drive motor 52. Specifically, a connection gear 65 is connected to the motor shaft gear 60. The endless belt 68 is stretched around pulleys 66 and 67. The pulley 66 is connected to the connecting gear 65 by a rotating shaft, and rotates together with the connecting gear 65. The pulley 67 is connected to the rotation shaft of the encoder 69. Therefore, as the pulley 67 rotates, the rotation shaft of the encoder 69 rotates. As described above, the rotation of the rotating shaft of the movable column driving motor 52 rotates the rotating shaft of the encoder 69 via the motor shaft gear 60, the connecting gear 65, the pulley 66, the endless belt 68, and the pulley 67.

  The encoder 69 is connected to the movable column drive control unit 51. The movable strut drive control unit 51 detects the amount of rotation of the rotating shaft of the movable strut drive motor 52 from the output of the encoder 69. Thereby, the movable strut drive control unit 51 detects the amount of movement of the endless belt 64 in the vertical direction, and obtains the position of the movable strut 12 connected to the endless belt 64 (vertical position with respect to the fixed strut 11). .

  The movable column drive control unit 51 detects a sensor (not shown) that detects that the position of the movable column 12 with respect to the fixed column 11 is at the lower limit position and that the position of the movable column 12 with respect to the fixed column 11 is at the upper limit position. )have.

  In addition, the movable fence 1 spans two stop bars 13 and 14 between movable struts 12 slidably attached to the two fixed struts 11 in the vertical direction. As described above, the upper stop bar 13 is fixed near the upper end portion of the movable column 12. Further, the lower stop bar 14 is attached to the movable column 12 so as to be slidable in the vertical direction. The movable fence 1 is provided with a stop bar drive motor 54 for each movable column 12. The stop bar drive control unit 53 is provided on the two movable struts 12 so that both ends of the lower stop bar 14 are displaced at substantially the same height with respect to the movable struts 12 in accordance with an instruction from the control unit 50. The stop bar drive motor 54 is controlled in conjunction.

  FIG. 5 is a schematic diagram for explaining a mechanism for sliding the lower restraining bar in the vertical direction. The movable strut 12 has an endless belt 74 stretched around pulleys 72 and 73 arranged in the vertical direction. A motor shaft gear 70 attached to the rotation shaft of the stop bar drive motor 54 is connected to a drive pulley gear 71 that rotates one pulley 72 (drive pulley 72). The drive pulley 72 is rotationally driven via the motor shaft gear 70 and the drive pulley gear 71 by the rotational drive of the stop bar drive motor 54. The endless belt 74 rotates in the vertical direction as the drive pulley 72 rotates. The lower stop bar 14 is connected to an endless belt 74, and slides in the vertical direction with respect to the movable column 12 as the endless belt 74 rotates. The restraining bar drive motor 54 can rotate in the forward direction (the direction in which the lower restraining bar 14 rises) and in the reverse direction (the direction in which the lower restraining bar 14 descends). In this embodiment, the stop bar drive motor 54 is a pulse motor.

  The encoder 79 detects the amount of rotation of the rotation shaft of the stop bar drive motor 54. Specifically, a connecting gear 75 is connected to the motor shaft gear 70. The endless belt 78 is stretched around pulleys 76 and 77. The pulley 76 is connected to the connecting gear 75 by a rotating shaft, and rotates together with the connecting gear 75. The pulley 77 is connected to the rotation shaft of the encoder 79. Accordingly, as the pulley 77 rotates, the rotation shaft of the encoder 79 rotates. As described above, the rotation of the rotation shaft of the stop bar drive motor 54 rotates the rotation shaft of the encoder 79 via the motor shaft gear 70, the connection gear 75, the pulley 76, the endless belt 78, and the pulley 77.

The encoder 79 is connected to the stop bar drive control unit 53. The stop bar drive control unit 53 detects the rotation amount of the rotation shaft of the stop bar drive motor 54 from the output of the encoder 79. Thereby, the stop bar drive control unit 53 detects the amount of movement of the endless belt 74 in the vertical direction, and the position of the lower stop bar 14 connected to the endless belt 74 (the position in the vertical direction with respect to the movable column 12 ). Get.

  The stop bar drive control unit 53 detects that the position of the lower stop bar 14 with respect to the movable strut 12 is at the lower limit position and that the position of the lower stop bar 14 with respect to the movable strut 12 is at the upper limit position. It has a sensor (not shown).

  Even when the stop bar driving motor 54 is stopped, the lower stop bar 14 is lifted up or down by an object in contact with the upper and lower sides of the movable support column 12. When the position (height) in the direction changes, this can be detected by the encoder 79. Specifically, when the lower stop bar 14 moves in the vertical direction with respect to the movable column 12, the endless belt 74 rotates. The rotation of the endless belt 74 rotates the driving pulley 72, the driving pulley gear 71, and the motor shaft gear 70. As described above, the rotation of the motor shaft gear 70 rotates the rotation shaft of the encoder 79.

  The communication unit 55 controls communication with a host device such as a train stopped at the station platform or a management device installed in the station office. Communication with the train is performed via a known transponder. The notification unit 56 performs warning notification by voice or the like to passengers and station attendants.

  Next, the opening / closing operation | movement of this movable fence 1 is demonstrated. The movable fence 1 is normally closed, and when the train arrives at the station platform, the movable fence 1 shifts to the open state. And when boarding / alighting of the passenger with respect to a train is completed, it will transfer to a closed state. First, the operation of moving the movable fence 1 from the closed state to the open state will be described. FIG. 6 is a diagram illustrating an operation in which the movable fence shifts from the closed state to the open state.

  When the movable fence 1 receives an opening instruction in the communication unit 55, the movable column driving control unit 51 drives the movable column driving motor 52 and slides the movable column 12 upward. FIG. 6A shows a closed state of the movable fence 1. At this time, the movable strut drive control unit 51 performs constant power control to set the rotational speed of the movable strut drive motor 52 to a predetermined normal speed, and slides the movable strut 12 upward. For example, the movable support 12 is slid upward at 40 cm / s. At this time, the movable column drive motor 52 is rotated forward. When the movable column 12 reaches the upper limit position, the movable column driving control unit 51 stops the movable column driving motor 52 (see FIG. 6B).

  Thereafter, the stop bar drive controller 53 drives the stop bar drive motor 54 and slides the lower stop bar 14 upward. At this time, the stop bar drive control unit 53 performs constant power control to set the rotation speed of the stop bar drive motor 54 to a predetermined normal speed, and slides the lower stop bar 14 upward. For example, the lower stop bar 14 is slid upward at 40 cm / s. At this time, the stop bar drive motor 54 is rotated forward. When the lower stop bar 14 reaches the upper limit position, the stop bar drive control unit 53 stops the stop bar drive motor 54 (see FIG. 6C). This state is an open state. When in this open state, the lower stop bar 14 is located at a height of about 2 m from the upper surface of the station platform.

  Next, the operation of moving the movable fence 1 from the open state to the closed state will be described. FIG. 7 is a diagram illustrating an operation in which the movable fence shifts from the open state to the closed state. FIG. 7 (A) shows the open state of the movable fence 1 as in FIG. 6 (C).

  When the movable fence 1 receives a closing instruction in the communication unit 55, the movable column driving control unit 51 drives the movable column driving motor 52 and slides the movable column 12 downward. At this time, the movable strut drive control unit 51 performs constant power control to set the rotation speed of the movable strut drive motor 52 to a predetermined normal speed, and slides the movable strut 12 downward. For example, the movable support 12 is slid downward at 40 cm / s. At this time, the movable column drive motor 52 is rotated in the reverse direction. When the movable column 12 reaches the lower limit position, the movable column driving control unit 51 stops the movable column driving motor 52 (see FIG. 7B).

  Thereafter, the stop bar drive control unit 53 drives the stop bar drive motor 54 and slides the lower stop bar 14 downward. At this time, the stop bar drive control unit 53 performs constant power control to set the rotation speed of the stop bar drive motor 54 to a predetermined normal speed, and slides the lower stop bar 14 downward. For example, the lower stop bar 14 is slid downward at 40 cm / s. At this time, the stop bar drive motor 54 is rotated in the reverse direction. When the lower stop bar 14 reaches the lower limit position, the stop bar drive control unit 53 stops the stop bar drive motor 54 (see FIG. 7C). This state is a closed state. FIG. 7C shows the same closed state as FIG.

  In the above description, in the operation of shifting from the open state to the closed state, the timing at which the lower support bar 14 starts to rise with respect to the movable column 12 is set to the upper limit position with respect to the fixed column 11. However, the timing may be when the movable column 12 reaches a predetermined height (a height lower than the upper limit position) with respect to the fixed column 11.

  In the operation of shifting from the closed state to the open state, the timing at which the lower restraining bar 14 starts to descend with respect to the movable column 12 is after the movable column 12 reaches the lower limit position with respect to the fixed column 11. However, this timing may also be when the movable column 12 reaches a predetermined height with respect to the fixed column 11 (a height higher than the lower limit position).

  The movable fence 1 includes a sensor (not shown) that detects an object (such as a passenger) that is located between the fixed columns 11 or between the movable columns 12. Specifically, a light emitting element is attached to the side surface of one fixed column 11 or one movable column 12, and a light receiving element (not shown) is mounted to the side surface of the other fixed column 11 or the other movable column 12. Yes. The light receiving element is attached to face the light emitting element so as to receive the light emitted from the corresponding light emitting element. For each light receiving element, the control unit 50 detects an object located between the fixed columns 11 based on whether or not the light emitted from the light emitting element is received.

  The control unit 50 moves the sensor between the fixed struts 11 during the transition operation from the closed state to the open state of the movable fence 1 shown in FIG. 6 and during the transition operation from the open state to the closed state shown in FIG. When an object located between the movable struts 12 is detected, the opening / closing operation is stopped and an alarm notification is given by the notification unit 56. Specifically, when the sensor detects an object located between the fixed columns 11 or between the movable columns 12, the control unit 50 instructs the movable column drive control unit 51 to stop driving the movable column drive motor 52. At the same time, the stop bar drive control unit 53 is instructed to stop driving the stop bar drive motor 54. The movable column drive control unit 51 and the stop bar drive control unit 53 stop the movable column drive motor 52 and the stop bar drive motor 54 in accordance with an instruction from the control unit 50.

  When the sensor detects an object located between the fixed struts 11 or between the movable struts 12 during the opening / closing operation of the movable fence 1, the opening / closing operation of the movable fence 1 can be stopped immediately.

  Further, the control unit 50 shifts from the above-described FIG. 6A to the state of FIG. 6B and from the above-described FIG. 7A to the state of FIG. 7B. When it is determined that the lower stop bar 14 is in contact with an object (passenger, etc.), the movable column drive control unit 51 is instructed to stop driving the movable column drive motor 52 and the stop bar drive control unit 53 is instructed. It instructs the stop of the stop bar drive motor 54 to stop driving.

  When the state shifts from the state shown in FIG. 6A to the state shown in FIG. 6B and when the state changes from the state shown in FIG. 7A to the state shown in FIG. The support column drive motor 52 is driven, and the movable support column 12 is slid in the vertical direction with respect to the fixed support column 11. As the movable column 12 slides in the vertical direction, the lower stop bar 14 also slides in the vertical direction. On the other hand, the stop bar drive control unit 53 stops the drive of the stop bar drive motor 54. Therefore, when the lower stop bar 14 is lifted upward or pushed downward by an object with which the lower stop bar 14 comes into contact, the vertical position of the lower stop bar 14 with respect to the movable column 12 changes.

  As described above, even when the stop bar driving motor 54 is stopped, the lower support bar 14 is lifted upward or pushed downward by an object in contact with the movable support column. When the position in the vertical direction with respect to 12 changes, this can be detected by the encoder 79.

  When the stop bar drive control unit 53 detects from the output of the encoder 79 that the position of the lower stop bar 14 in the vertical direction with respect to the movable support column 12 has changed, it notifies the control unit 50 of the change. The control unit 50 determines that the lower stop bar 14 has come into contact with the object based on the notification from the stop bar drive control unit 53, and instructs the movable column drive control unit 51 to stop driving the movable column drive motor 52. At the same time, the stop bar drive control unit 53 is instructed to stop driving the stop bar drive motor 54.

  Note that the notification from the stopping bar drive control unit 53 to the control unit 50 is in the transition from the state of FIG. 6 (A) to the state of FIG. 6 (B) and from FIG. 7 (A) to FIG. This notification is made when the state is shifted to the state B), and is not made when the stop bar drive control unit 53 is driving the stop bar drive motor 54.

  The control unit 50 does not need to instruct the stop bar drive control unit 53 to stop driving the stop bar drive motor 54 because the stop bar drive control unit 53 does not drive the stop bar drive motor 54. .

  Therefore, even when the movable strut drive control unit 51 slides the movable strut 12 up and down with respect to the fixed strut 11, the contact between the lower stop bar 14 and the object can be detected with high accuracy, and safety is further increased. Enhanced.

The stop bar drive control unit 53 drives the stop bar drive motor 54, and when the lower stop bar 14 is slid in the vertical direction with respect to the movable column 12, the pulse signal that is the output of the encoder 79 is output. What is necessary is just to detect the load fluctuation | variation of the stop bar drive motor 54 from a period. Since the lower restraining bar 14 is relatively light in weight, the contact between the lower restraining bar 14 and the object can be accurately detected by the load fluctuation of the restraining bar drive motor 54.

The stop bar drive control unit 53 stops the stop bar drive motor 54 when detecting a contact between the lower stop bar 14 and an object due to a load fluctuation of the stop bar drive motor 54. In addition, the control unit 50 is notified accordingly. When the control unit 50 receives a load change notification from the stop bar drive control unit 53, the control unit 50 instructs the movable column control unit 51 to stop driving the movable column drive motor 52.

Accordingly, even when the stop bar drive control unit 53 drives the stop bar drive motor 54 and slides the lower stop bar 14 up and down with respect to the movable column 12, the lower stop bar 14 and the object When the contact is detected, the opening / closing operation can be stopped immediately, and safety can be ensured.

  In the above example, the case where the present invention is applied to the movable fence 1 installed at the station platform has been described as an example. However, the present invention can also be used as a gate device provided at an entrance or the like where a vehicle enters and exits at a construction site or the like.

DESCRIPTION OF SYMBOLS 1 ... Movable fence 11 ... Fixed support | pillar 12 ... Mobile support | pillar 13 ... Upper side stop bar 14 ... Lower side stop bar 50 ... Control part 51 ... Movable support | pillar drive control part 52 ... Movable support | pillar drive motor 53 ... Stop bar drive control part 54 ... Stop Bar drive motor 55 ... communication unit 56 ... notification unit 70 ... motor shaft gear 71 ... drive pulley gear 72 ... drive pulley 74 ... endless belt 75 ... connection gear 76 ... pulley 77 ... pulley 78 ... endless belt 79 ... encoder

Claims (5)

Fixed struts erected on both sides of the entrance and exit,
For each of the fixed columns, a movable column that is slidably attached to the fixed column vertically.
Between the movable struts, a restraining member that is slidable up and down with respect to the movable struts,
A movable strut drive unit that slides the movable strut in a vertical direction with respect to the fixed strut;
In a gate device comprising: a stop member driving unit that slides the stop member in a vertical direction with respect to the movable column.
A detection unit for detecting a vertical displacement of the restraining member with respect to the movable column;
When the stop member driving unit stops sliding of the stop member in the vertical direction with respect to the movable column, and the movable column driving unit slides the movable column in the vertical direction with respect to the fixed column, the detection is performed. A controller that determines that the restraining member is in contact with an object when the part detects a vertical displacement of the restraining member with respect to the movable column ;
The restraining member drive unit slides the restraining member in the vertical direction with respect to the movable column by the driving force of the restraining member drive motor.
The movable column driving unit slides the movable column up and down with respect to the fixed column by the driving force of the movable column driving motor,
The detection unit detects a vertical displacement of the restraining member with respect to the movable column by a load variation of the restraining member drive motor,
The movable column driving motor is a gate device having a driving force larger than that of the stopping member driving motor .   2. The gate device according to claim 1, wherein when the control unit determines that the restraining member is in contact with an object, the movable column driving unit stops the vertical sliding of the movable column with respect to the fixed column. . Prior Symbol detector, the gate device according to vertical displacement of the stop member relative to the movable strut to claim 1 or 2, is detected by the rotation of the rotary shaft of the restraining member drive motor. The gate device according to claim 1, wherein the restraining member drive motor is a pulse motor. Before Symbol movable strut drive motor is a servo motor, a gate device according to any one of claims 1 to 4.

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