JP2006306589A - Entrance safety device of man conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an entrance safety device of a man conveyor capable of reliably detecting foreign matters caught between a tread and a comb plate. <P>SOLUTION: The entrance safety device comprises treads for movement between entrances of a man conveyor, landing plates 1 to form a floor face of the entrances, a comb plate 3 arranged with a predetermined space on the tread side of the landing plate, a comb part 4 which is provided on an edge on the tread side of the comb plate and in which comb teeth 4a formed on a tip part are arranged so as to be engaged with a cleat of the tread passing therebelow, a mechanism stand 2 which is provided on a fixed body of the entrances with the comb plate placed thereon, a first urging body 6 to press the comb plate against the mechanism stand, and a detection switch 10 which detects the displacement of the comb plate in the tread moving direction to stop the movement of the tread. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a safety device provided at an entrance of a man conveyor.

  In man conveyors such as escalators and moving walkways, cleats are formed along the direction of movement on the upper surface of steps that are connected endlessly and circulate between the entrances and exits. In addition, the landing plate that forms the floor surface of the entrance / exit is provided with a comb portion on the step side edge via a comb plate, and the comb teeth formed on the step side of the comb portion pass under the step. By engaging the cleats, foreign matter on the step is prevented from entering the machine room and passenger's feet on the step are prevented from being sandwiched between the step and the comb plate.

  Further, as a prior art of the safety device provided at the entrance / exit, a comb portion that is rotatably provided on the comb plate so that the comb teeth meshing with the cleats of the step moves up and down, and the comb portion is biased downward. An urging body and a detection switch for detecting the upward displacement of the comb portion are provided, and the comb portion moves upward against the urging force of the urging body when foreign matter or the like entering the step cleat comes into contact with the comb teeth. In such a case, the displacement is detected by a detection switch, and a lamp of a monitoring panel in an attendant room is turned on or a buzzer is sounded (for example, see Patent Document 1).

JP-A-8-333075

  The entrance / exit safety measures of the man conveyor described in Patent Document 1 have a configuration in which the vertical displacement of the comb portion is detected and an abnormality is notified to the outside, and foreign matters are sandwiched between the step and the comb teeth. It is effective when However, in actual sites, cleaning staff and passengers often use a pointed object to remove foreign matter that has entered the cleat in accordance with the unevenness of the step cleat. In such a case, a sharp object may pass between the comb teeth of the comb portion and be sandwiched between the comb plate supporting the comb portion and the step. In the entrance / exit safety device described in Patent Document 1, This condition could not be detected. For this reason, there has been a problem that the emergency stop device does not operate until a sharp object is sandwiched between the step and the comb plate and an excessive force is applied to the step.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an entrance / exit safety device for a man conveyor that can reliably detect a foreign object sandwiched between a step and a comb plate. Is to provide.

  The entrance / exit safety device for a man conveyor according to the present invention includes a step that moves between both entrances of the man conveyor, a landing plate that forms a floor surface of the entrance, and a predetermined gap on the step side of the landing plate. A comb plate disposed on the step side edge of the comb plate, and a comb portion disposed so that a comb tooth formed at a tip portion meshes with a cleat of the step passing below, A mechanism base on which the comb plate is placed, a first urging body that presses the comb plate against the mechanism base, and a displacement of the comb plate in the step movement direction is detected to stop the movement of the step. And a detection switch.

  The present invention includes a step that moves between both entrances and exits of a man conveyor, a landing plate that forms a floor surface of the entrance and exit, a comb plate that is disposed with a predetermined gap on the step side of the landing plate, The comb plate is provided on the step side edge of the comb plate, and the comb teeth formed on the tip portion are arranged so as to mesh with the cleats of the step that passes below, and on the fixed body of the entrance / exit. Is configured to include a mechanism base on which the comb plate is placed, a first urging body that presses the comb plate against the mechanism base, and a detection switch that detects the displacement of the comb plate in the step movement direction and stops the step movement. Thus, it is possible to reliably detect a foreign object sandwiched between the step and the comb plate.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a plan view of a passenger conveyor entrance safety device according to Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. In addition, illustration is abbreviate | omitted about the step which circulates between the both entrances and exits of a man conveyor. 1 and 2, the landing plate 1 that forms the floor surface of the entrance / exit of the man conveyor is placed on a pair of mechanism bases 2 that are provided at predetermined intervals on a fixed body below the entrance / exit. The two side edges are firmly fixed to the mechanism base 2 respectively. Here, the step side edge portion of the landing plate 1 is formed such that the upper portion protrudes to the step side over the width direction of the entrance / exit. Further, the comb plate 3 disposed on the step side of the landing plate 1 is placed on both the mechanism bases 2 so that the upper surface thereof is substantially flush with the upper surface of the landing plate 1. The mechanism base 2 and the comb plate 3 are only a stainless plate 2a made of a rust preventive material provided on the upper surface of the mechanism base 2 and a stainless plate 3a made of the same rust preventive material provided on the lower surface of the comb plate 3. There is no contact surface other than the stainless plates 2a and 3a that are in contact with each other and are in contact with each other.

  Further, the comb plate 3 is formed with a step that is one step lower in the width direction on each upper surface of the step side edge and the entrance / exit side edge adjacent to the landing plate 1. The comb plate 3 is disposed such that a protrusion formed on the step side edge of the landing plate 1 is positioned within the step formed on the entrance / exit side edge. At this time, the entrance / exit side edge of the comb plate 3 and the step side edge of the landing plate 1 are not in contact with each other, and a slight predetermined gap B of about 0.5 mm is formed in the step moving direction. In addition, since the step side edge of the landing plate 1 is disposed so as to cover the edge of the comb plate 3, the machine room provided below the landing plate 1 is viewed from the passenger passing through the entrance. I can't see it.

  On the other hand, the step formed on the step side edge of the comb plate 3 is provided with a comb portion 4 having predetermined comb teeth 4a over the width direction. The comb teeth 4a project obliquely downward from the fixed portion of the comb portion 4 disposed in the step toward the step side, and the comb portion 4 is formed by the comb teeth 4a formed at the tip portion of the comb portion 4a. 4 is appropriately arranged so as to mesh with a cleat formed on the upper surface of the step that passes below 4. Further, the comb portion 4 is disposed so that the upper surface of the entrance / exit side edge portion is substantially flush with the upper surface of the comb plate 3.

  Reference numeral 5 denotes a mounting bolt that is loosely penetrated from above through a long hole-shaped through hole 3b formed at both side edges of the comb plate 3 and that has a tip screwed into a screw hole formed in the mechanism base 2. , 6 is a pressing spring 6 (first attachment) that constantly urges the comb plate 3 downward by inserting the mounting bolt 5 into the hollow portion and arranging it between the lower surface of the head 5a of the mounting bolt 5 and the upper surface of the comb plate 3. Power). The comb plate 3 is pressed against the mechanism base 2 from above by the mounting bolt 5 and the pressing spring 6, and the horizontal movement is restricted by the frictional force generated between the stainless plates 2a and 3a. Here, the urging force of the pressing spring 6 that urges the comb plate 3 downward is appropriately adjusted so that the comb plate 3 does not move due to a force or an impact acting when the passenger walks.

  Reference numeral 7 denotes a front end portion which is screwed to each support body 8 disposed on both sides of the comb plate 3 at a predetermined interval and abuts against the comb plate 3 by changing a protruding amount from the support body 8. By adjusting the position, a position adjusting bolt that locks the comb plate 3 at an arbitrary position in the width direction, 9 has one end on each support 8 and the other end on the end surface of the comb plate 3 that is close to each other. A pressing spring (second biasing body) that is provided and constantly biases the comb plate 3 toward the step. The urging force of the pressing spring 9 is adjusted as appropriate so that the comb plate 3 pressed against the mechanism base 2 by the pressing spring 6 does not move due to the force or impact acting when the passenger walks. .

  The support 8 on one side is provided with a detection switch 10 for detecting the displacement of the object to be detected in the step movement direction. The detector of the detection switch 10 protrudes from the comb plate 3. Angle 11 is in contact. That is, the detection switch 10 is configured to be able to indirectly detect the displacement of the comb plate 3 in the step movement direction by detecting the displacement of the angle 11 in the step movement direction.

Next, operation | movement of the entrance / exit safety device which has the said structure is demonstrated.
As described above, the comb plate 3 is pressed against the mechanism base 2 so that it does not move due to the force or impact acting when the passenger of the man conveyor passes the entrance / exit. Here, when the foreign matter that has passed through the comb teeth 4a of the comb portion 4 is sandwiched between the comb plate 3 and a step that is opposed to the lower surface of the comb plate 3 with a predetermined gap, the comb plate 3 Due to the movement of the foreign object accompanying the movement, a force is received in the step movement direction. At this time, when the force acting on the comb plate 3 exceeds a predetermined value, the comb plate 3 moves to the entrance / exit side, and this displacement is detected by the detection switch 10 via the angle 11. When the detection switch 10 detects that the displacement of the comb plate 3 has exceeded a predetermined value, an emergency stop signal for emergency stop of the movement of the step from the detection switch 10 to a control means (not shown) in the machine room Is output, and the control means stops the movement of the step based on the emergency stop signal. Note that the displacement amount of the comb plate 3 serving as a reference when stopping the step is set to a value smaller than the gap B formed between the comb plate 3 and the landing plate 1.

  According to the first embodiment of the present invention, since the entrance / exit gate safety device can stop the movement of the step based on the displacement of the comb plate 3 in the step movement direction, the comb plate 3 after passing the comb teeth 4a. It is possible to reliably detect a foreign object sandwiched between the step and the step. In addition, the step can be stopped at the time when the step moving direction, that is, the horizontal force is applied before the vertical force acting on the comb portion 4 or the comb plate 3 is applied upward. It is also possible to respond quickly and minimize damage. In addition, by constituting the contact surface between the mechanism base 2 and the comb plate 3 with the stainless steel plates 2a and 3a having rust prevention properties, it is possible to prevent a malfunction due to corrosion and to ensure a stable operation.

It is a top view of the entrance / exit safety device of a man conveyor in Embodiment 1 of this invention. It is AA sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Landing plate 2 Mechanism base 2a, 3a Stainless steel plate 3 Com plate 3b Through-hole 4 Comb part 4a Comb tooth 5 Mounting bolt 5a Head 6, 9 Pressing spring 7 Position adjustment bolt 8 Support body 10 Detection switch 11 Angle

Claims (4)

  A step that moves between both entrances of the man conveyor, a landing plate that forms a floor surface of the entrance, a comb plate that is disposed with a predetermined gap on the step side of the landing plate, and the comb plate The comb plate is provided at the step side edge portion of the step, and the comb teeth formed at the tip end portion thereof are arranged so as to mesh with the cleats of the step that passes below, and the fixed body of the entrance / exit. , A first urging body that presses the comb plate against the mechanism base, and a detection switch that detects the displacement of the comb plate in the step movement direction and stops the movement of the step. An entrance / exit safety device for a man conveyor characterized by that.   2. The entrance / exit safety device for a man conveyor according to claim 1, wherein the lower surface of the comb plate is opposed to a step passing therebelow with a predetermined gap.   The entrance / exit safety device for a man conveyor according to claim 1 or 2, further comprising a second urging member that constantly urges the comb plate toward the step.   4. The entrance / exit safety device for a man conveyor according to any one of claims 1 to 3, wherein the comb plate and the mechanism base are in contact with each other by a rust preventive material provided on each facing surface.

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