JPH08268676A - Safety device for passenger conveyer - Google Patents

Abstract

PURPOSE: To detect foreign matter sticking or the like so that an escalator can be stopped, by setting up a detector of detecting an abnormal protrusion in a handrail surface between two rollers brought into contact with the handrail surface to hold a fixed space to be mounted in a main frame. CONSTITUTION: A handrail 1 is in/out moved from a handrail in/out port provided in an on-getting port. Then in a plate 2 mounted in a main frame, two rollers 3 are provided, with these rollers into contact with a surface of the handrail 1, and rotated according to circulation moving the handrail 1. That is, by supporting the handrail 1 by the rollers 3, the handrail 1 is placed horizontal to a center line of the rollers 3. A detector 4 is mounted in the plate 2 between the rollers 3, and fine adjusted so as to ensure a clearance between a point end of the detector 4 and the surface of the handrail 1 in a condition of no abnormality of the handrail 1. In this way, swelling a surface of the handrail 1 and sticking foreign matter are detected, also to stop an escalator when detected this handrail surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a handrail of a passenger conveyor such as an escalator or an electric road.

[0002]

2. Description of the Related Art Conventionally, as a technique for ensuring the safety of a handrail, as shown in JP-A-4-361983, a plurality of detectors are installed inside a handrail guide near a curved portion of the handrail, There is known a method of detecting that the handrail has come out of the handrail guide and stopping the passenger conveyor.

[0003]

In the above-mentioned conventional example, the handrail has a curved portion where the handrail easily comes out of the guide,
Alternatively, a plurality of detectors are installed inside the handrail guide near the curved portion to detect that the handrail has slipped out of the handrail guide. in this case,
Although abnormal circulation of the handrail is detected to ensure the safety of users, it may cause damage to the escalator device, and may cause design defects such as manufacturing defects, swelling of the surface of the handrail over time, or adhesion of foreign matter. There was a problem that could not be detected.

[0004]

SUMMARY OF THE INVENTION The present invention comprises a balustrade arranged on both sides of a main frame, a plurality of steps for endlessly connecting and circulating movement, and a handrail for moving in synchronization with the steps. In the passenger conveyor, the handrail comes into contact with the surface of the handrail and keeps a constant interval in the longitudinal direction in the main frame within a range not guided by the handrail guide after entering the handrail entrance / exit at the entrance / exit. The configuration is such that two attached rollers and a detector for detecting an abnormal surface protrusion of the handrail are installed between the two rollers.

[0005]

[Function] Within a range where the handrail is not guided by the handrail guide after entering the handrail entrance / exit at the entrance / exit, the handrail comes into contact with the surface of the handrail and is attached to the main frame at a constant interval in the longitudinal direction. By installing two rollers and a detector for detecting abnormal surface protrusions on the handrail between these two rollers, the handrail between these two rollers can be placed horizontally with the line connecting the centers of the two rollers. The detector can stop the escalator by detecting the bulge on the surface of the handrail and the adhesion of foreign matter by being placed on the escalator. Therefore, the bulge on the surface of the handrail and the adhesion of foreign matter, which cannot be visually confirmed, can be detected at an early stage, and it is possible to prevent design problems and damage to the escalator device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. FIG. 1 and FIG. 2 show a range in which the handrail 1 enters through the handrail entrance / exit at the entrance / exit, and is free of support of the handrail guide. The plate 2 is attached to the main frame, and two rollers 3 are installed on the plate 2. Both of the rollers 3 are in contact with the surface of the handrail 1, and as the handrail 1 circulates, Perform a rotational movement. Further, in the state shown in FIG. 1, since the handrail 1 is not supported by the handrail guide, it may be curved, but by supporting the handrail with two rollers 3, two handrails are provided. The handrail between the rollers can be horizontal with the line connecting the centers of the two rollers. Further, the detector 4 is attached to the plate 2 between the two rollers, and the handrail 1 is finely adjusted to ensure a slight gap between the tip of the detector 4 and the surface of the handrail 1 when the handrail 1 is in an abnormal state. I am doing it.

Next, a process of detecting a bulge of the handrail 1 will be described with reference to FIGS. Detector 4 is the handrail 1
The handrail 1 and the tip of the detector 4
Since a gap is secured with the surface of the handrail, the detector 4 does not detect when the handrail 1 is normal, but as shown in FIG. 1, when the bulge 5 of the handrail 1 appears over time or suddenly, As shown in FIG. 3, the bulge 5 of the handrail 1 that circulates moves between two rollers and reaches the detector 4, and the bulge 5 comes into contact with the detector 4. Stop the escalator by detecting the abnormality of 1. Further, since the handrail between the two rollers is horizontal to the line connecting the centers of the two rollers, the detector 4 can detect the presence or absence of the bulge 5 even if the bulge 5 of the handrail 1 is very small. can do. Even if a foreign matter adheres to the handrail 1, the escalator can be stopped by detecting the abnormality of the handrail 1 as described above.

[0008]

According to the present invention, the escalator can be stopped by detecting the bulge of the surface of the handrail and the adhesion of foreign matter. Therefore, the bulge on the surface of the handrail and the adhesion of foreign matter, which cannot be visually confirmed, can be detected at an early stage, and it is possible to prevent design problems and damage to the escalator device.

[Brief description of drawings]

FIG. 1 is a side view of a main part showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a side view of a main part showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Handrail, 2 ... Plate, 3 ... Roller, 4 ... Detector, 5 ... Bulge.

Claims (3)

[Claims] 1. A passenger conveyor comprising a balustrade arranged on both sides of a main frame, a plurality of steps connected endlessly for cyclic movement, and a hand rail moving in synchronism with the steps. Within the range where the rail is not guided by the handrail guide after entering the handrail entrance / exit at the entrance / exit, the two rails attached to the main frame are in contact with the surface of the handrail and keep a constant space in the longitudinal direction. A safety device for a passenger conveyor, characterized in that a roller and a detector for detecting an abnormal surface protrusion of the handrail are installed between the two rollers. 2. The passenger conveyor safety device according to claim 1, wherein the detector detects a bulge on the surface of the handrail or adhesion of foreign matter to stop the escalator. 3. The passenger conveyor safety device according to claim 1, wherein the handrail between the two rollers is placed horizontally with respect to a line connecting the centers of the two rollers.