JP2016050105A - Safety device of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety device of a passenger conveyor which can be attached to the passenger conveyor by an easy operation, and can detect that foreign matters are gripped between a skirt guard panel and a footstep.SOLUTION: This safety device of a passenger conveyor comprises a deflection detector which is fixedly arranged at a frame side of the passenger conveyor at a rear side of a skirt guard panel which is oppositely arranged at a side face of a footstep constituting the passenger conveyor, and stops an operation of the passenger conveyor when deflection is detected. The deflection detector is constituted of a space sensor which is changed in an output voltage by a distance between the skirt guard panel and itself. The space sensor is zero-adjusted by the output voltage at the attachment of the skirt guard panel, and detects the deflection of the skirt guard panel to a frame side when the output voltage reaches a negative value which is not higher than a prescribed value by the approach of the skirt guard panel during the operation of the passenger conveyor.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to a safety device for passenger conveyors.

  In the passenger conveyor, a skirt guard panel is installed on both the left and right sides of the circulating step, and a balustrade panel with a handrail belt is installed upright on the skirt guard panel. In addition, a safety device is provided to detect a foreign object such as a load or a passenger's foot between the skirt guard panel and the step and to stop the movement of the step in an emergency.

  This safety device is usually configured by installing a microswitch on the back side of the skirt guard panel (the side opposite to the side facing the side surface of the step). When the skirt guard panel is bent in a direction away from the step due to the foreign object being sandwiched, the micro switch is pressed to detect the foreign object sandwich.

  In such a conventional safety device, the operating point of the microswitch, that is, the distance between the skirt guard panel and the microswitch detector is extremely adjusted due to the nature of sensitively detecting dangerous conditions to ensure passenger safety. It is important and high accuracy is required.

JP 7-315747 A

  However, the distance between the skirt guard panel and the micro switch detector described above may fluctuate when the skirt guard is detached and attached for maintenance and inspection work, etc., and each work needs to be adjusted again. There was a problem that it took.

  In addition, the passenger conveyor may or may not have an inner deck board installed on the step side of the skirt guard panel. Depending on the presence or absence of the inner deck board, the skirt guard panel and the microswitch detector There is a problem that it is necessary to change the interval of the adjustment, and the adjustment is also time-consuming.

  The present invention has been made in view of the above circumstances, can be attached to a passenger conveyor with a simple operation, and can detect with high accuracy that a foreign object has been sandwiched between a skirt guard panel and a step. It aims at providing the safety device of a passenger conveyor.

  According to the embodiment for achieving the above object, the safety device for the passenger conveyor is fixedly arranged on the frame side of the passenger conveyor on the back side of the skirt guard panel provided facing the side surface of the steps constituting the passenger conveyor. And a deflection detector for detecting the deflection of the skirt guard panel toward the frame. When the deflection is detected, the operation of the passenger conveyor is stopped. This deflection detector is composed of a space sensor whose output voltage varies depending on the distance from the skirt guard panel. The space sensor is zero-adjusted by the output voltage when the skirt guard panel is installed, and the skirt guard is operated while the passenger conveyor is in operation. When the output voltage becomes a negative value less than a predetermined value due to the approach of the panel, the deflection of the skirt guard panel toward the frame is detected.

The external appearance perspective view which shows the passenger conveyor by which the safety device by one Embodiment was installed. Sectional drawing which shows the passenger conveyor by which the safety device by one Embodiment was installed. The side view which shows the back side of the skirt guard panel of the passenger conveyor by which the safety device by one Embodiment was installed. The flowchart which shows the process performed with the passenger conveyor by which the safety device by one Embodiment was installed.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. In the following, as an example of a passenger conveyor to which the present invention is applied, an escalator that conveys passengers across the upper and lower floors by moving a number of steps continuously up and down in a staircase shape will be described. In addition, the present invention can be effectively applied to a moving sidewalk (auto road) that conveys passengers by continuously moving a number of steps horizontally.

  As shown in FIGS. 1 and 2, the escalator 1 according to the present embodiment includes a frame 2 that is fixedly supported on a building via a support fitting across an upper floor and a lower floor. A number of steps 3 are provided on both sides of the frame 2 in the width direction, and a demarcation cleat 4 is provided on each step 3. A balustrade panel 5 is erected along the movement path of the steps 3, and a handrail belt 9 that circulates in synchronization with a number of steps 3 is mounted around the balustrade panel 5. A skirt guard panel 6 is installed at a position facing the step 3 at the lower part of the balustrade panel 5 along the moving direction of a number of steps 3. Although the skirt guard panel 6 is configured by arranging a plurality of unit panels, only the skirt guard panel 6 is described here.

  A space between the balustrade panel 5 and the skirt guard panel 6 is covered with an inner deck board 7, and an outer deck board 8 is provided outside the balustrade panel 5.

  As shown in FIGS. 2 and 3, the back side of the skirt guard panel 6 (on the side opposite to the side facing the side surface of the step 3) faces the frame 2 side of the skirt guard panel 6 in the moving direction of the step 3. A safety device 10 is provided for stopping the operation of the escalator 1 when bending is detected.

  The safety device 10 includes a space sensor 11 that functions as a deflection detector. The space sensor 11 is a device that includes a magnetic detector 111 that measures the distance to the skirt guard panel 6 facing the contactless sensor 6 and changes the output voltage according to the measured distance. The space sensor 11 is mounted on the mounting base 12 with a mounting bracket 112 fixed to the detector 111 with the detector 111 facing the back surface of the skirt guard panel 6. The mounting bracket 112 is connected to the escalator 1. Is attached to a mounting bracket 13 on the frame 2 side via a mounting screw 14.

  Next, the process performed with the escalator 1 in which the safety device 10 of this embodiment was installed is demonstrated with reference to the flowchart of FIG. In this embodiment, the space sensor 11 is attached so that the distance between the sensor 111 and the skirt guard panel 6 is within a measurable range a (for example, 0 mm <a <10 mm). Zero adjustment is performed by the output voltage when the panel 6 is attached.

  In the space sensor 11 attached in such a state, during normal operation of the escalator 1 (S1), it is monitored whether or not the output voltage from the detector 111 has become a negative value below a predetermined value (S2). ). When the output voltage from the detector 111 is not a negative value less than or equal to the predetermined value (“NO” in S2), normal operation is continued.

  Here, when a user gets on the step 3 of the escalator 1 and shoes or the like are sandwiched between the step 3 and the skirt guard panel 6 during the ride, the skirt guard panel 6 is bent toward the frame 2 side. When the skirt guard panel 6 is bent toward the frame 2, the skirt guard panel 6 approaches the detector 111 and the output voltage from the detector 111 decreases.

  When it is determined that the output voltage from the detector 111 has dropped to a predetermined negative value or less (“YES” in S2), the flexure of the skirt guard panel 6 toward the frame 2 is detected by the space sensor 11. The detection result is transmitted to the control device (not shown) of the escalator 1 via the cable 113.

  When the control device of the escalator 1 receives a detection result indicating that the skirt guard panel 6 has been detected to be bent toward the frame 2, the operation of the escalator is stopped (S4).

  According to the embodiment described above, the space sensor 11 that detects that a foreign object has been sandwiched between the skirt guard panel 6 and the step 3 is attached so that the distance from the skirt guard panel 6 is measurable. Thus, the safety device 10 can be installed simply by performing zero adjustment of the output voltage, and the safety device 10 can be operated with high accuracy without performing the complicated adjustment processing for installing the safety device as in the prior art. .

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Frame, 3 ... Step, 4 ... Demarcation cleat, 5 ... Parapet panel, 6 ... Skirt guard panel, 7 ... Inner deck board, 8 ... Outer deck board, 9 ... Handrail belt, 10 ... Safety device 11 ... Space sensor, 12 ... Mounting base, 13 ... Mounting bracket, 14 ... Mounting screw, 111 ... Detector, 112 ... Mounting bracket, 113 ... Cable

Claims (1)

A deflection detector that is fixedly arranged on the frame side of the passenger conveyor and detects the deflection of the skirt guard panel toward the frame side on the back side of the skirt guard panel provided facing the side surface of the steps constituting the passenger conveyor. A passenger conveyor safety device configured to stop the operation of the passenger conveyor when the deflection detector detects the deflection of the skirt guard panel toward the frame.
The deflection detector is composed of a space sensor whose output voltage varies depending on the distance from the skirt guard panel, and the space sensor is zero-adjusted by the output voltage when the skirt guard panel is attached, and the passenger conveyor A passenger conveyor safety device, wherein a deflection of the skirt guard panel toward the frame side is detected when the output voltage becomes a negative value less than a predetermined value due to the approach of the skirt guard panel during operation.

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