JPH0735470U - Handrail canvas surface condition detection device for passenger conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] To accurately detect the peeling of the handrail canvas surface or the peeling of the steel cord. [Structure] The present device is provided with a detection piece 3 which is arranged so as to face a back canvas surface 1A of a handrail 1 and is separated by a predetermined distance and which is swingably supported by a support member 2, and the detection piece 3.
Switch 5 that operates when the oscillates, and the required switch 5
And display means 7 for displaying the operating state of the switch 5 to display the pass / fail status of the back canvas surface 1A.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a state detection device for a handrail canvas surface on a passenger conveyor such as an escalator or a moving walkway.

[0002]

[Prior art]

 Conventionally, as a device of this type, as described in Japanese Utility Model Laid-Open No. 61-171789, a device having an inspection window with a lid provided on the upper side of the return side of the handrail is known. When necessary, the lid was opened and the canvas on the back side of the handrail was visually inspected. Further, as described in Japanese Patent Laid-Open No. 3-95096, a photoelectric sensor arranged to face the canvas surface of the back surface of the handrail, an optical fiber connected to the photoelectric sensor, and light are emitted, and It is equipped with a display device that projects light from the photoelectric sensor onto the canvas surface via an optical fiber, detects the amount of reflected light from the canvas surface, and displays the presence or absence of an output signal based on the magnitude of the reflected light amount with respect to a preset value. Things are known.

[0003]

[Problems to be solved by the device]

 However, in the former conventional technology, the deck is not located directly above the handrail, and even if an inspection window is provided, the position is diagonally above and the canvas behind the handrail passes through the inspection window. It is difficult to see the surface. In addition, in a general passenger conveyor, the handrail moves at 30 m / min, so while driving the passenger conveyor, while visually passing through the inspection window area, the state of the canvas surface on the back side can be visually inspected accurately. It is difficult to judge the quality, that is, the presence or absence of peeling of the canvas surface, and the presence or absence of the steel cord embedded in the handrail protruding onto the canvas surface. Further, in the latter prior art, since the quality is judged by the amount of reflected light, when the canvas surface is dirty, the amount of reflected light changes, which makes accurate judgment of quality difficult. In addition, if the steel cord is protruding, the amount of reflected light hardly changes and falls within the allowable range of the amount of detected light, which makes it impossible to accurately judge this.

An object of the present invention is to provide a state detection device for a handrail canvas surface in a passenger conveyor that can accurately determine the quality of the back surface of the handrail while the handrail is running.

[0005]

[Means for Solving the Problems]

 The above-mentioned object is that a plurality of steps are connected endlessly and run between two entrances and exits, and the balustrades arranged on the sides of the steps are arranged along the line of the balustrade, and are almost the same as the steps. In a handrail canvas state detection device for a passenger conveyor equipped with a handrail that travels in the same direction at a speed, it is placed facing the back canvas surface of the handrail and at a predetermined distance, and is shaken by a support member. This is achieved by providing a detection piece that is movably supported and a switch that operates when the detection piece swings.

[0006]

[Action]

 With the above configuration, for example, when the canvas surface is peeled off, the peeling point projects, so when the peeling point reaches the detection piece installation position, the detection piece is swung, and the switch operates. . Also, when the steel cord jumps out to the inner surface of the canvas, the detection piece is rocked when the protruding portion reaches the installation position of the detection piece, which causes the switch to operate. In this way, when peeling occurs on the canvas surface or the steel cord pops out, the protrusions caused by peeling and the steel cord itself come into direct contact with each other and the presence or absence of peeling to swing the detection piece, and the steel cord It is possible to accurately determine the quality of the canvas surface such as the presence or absence of popping out.

[0007]

【Example】

 An embodiment in which the present invention is applied to an escalator will be described below with reference to FIGS. As shown in FIGS. 1 and 2, a handrail canvas surface state detecting device according to an embodiment of the present invention faces a back surface canvas surface 1A of a handrail 1 and has a predetermined distance from the canvas surface 1A, for example, 2 mm. The detection piece 3 is installed at a distance of about 5 mm and is swingably supported by the support member 2, the support member 2 fixed to a frame (not shown) of the escalator, and the detection piece 3 is supported by the support member 2. A nut 4 for swingably supporting the switch 5, a switch 5 mounted on the support member 2 so as to abut the cam portion 3A of the detection piece 3, and the position of the detection piece 3 in a neutral position. A tension spring 6 for holding (the position where the tip 3B of the detection piece 3 comes closest to the canvas surface 1A) and the switch 5 are connected, and the operating state of the switch 5, that is, the presence or absence of the swing of the detection piece 3. To display And a display unit 7 for such amplifiers or buzzer. The display means 7 may be connected only when necessary, that is, when checking the condition of the handrail canvas surface. In this case, if a connector is connected to the switch 5 and the connector is exposed to the outside, the display means 7 can be easily connected.

Next, the configuration of the escalator to which the present invention is applied and the installation position of the above-mentioned handrail canvas surface state detection device will be described with reference to FIG. A plurality of escalators are connected endlessly, and a step (not shown) running between the two entrances and exits 8 and 9, a balustrade 10 arranged on the side of these steps, and an escalator arranged along the edge of the balustrade 10. A handrail guide (not shown), a handrail 1 guided by the handrail guide and traveling in the same direction at substantially the same speed as the step, and a driving device 11 for traveling the step and the handrail 1. It is composed of terminal gears 12 and 13 on which chains for traveling the steps are hung, and a group of rollers 14 for restricting the traveling position of the handrail 1.

The handrail canvas surface state detection device is installed on the return side of the handrail 1 (the area where the canvas surface 1A faces upward) in the vicinity of the upper entrance 8. In the area near the entrance / exit 8, the front and rear of the handrail 1 regulate the traveling position of the roller group, and the traveling of the handrail 1 is stable both vertically and horizontally, which is a suitable place for installing the state detection device. Next, the procedure for inspecting the back canvas surface 1A of the handrail 1 will be described.

When performing an inspection, the escalator is operated and the handrail 1 is run. If the canvas surface 1A of the handrail 1 is peeled off or the embedded steel cord is protruding, when that part reaches the detection piece, the detection piece 3 is directly contacted and the detection piece 3 is pushed. Rock. As a result, the switch 5 is pushed by the cam portion 3A of the detection piece 3 to operate, and the switch 5 operates on the display means 7, that is, the detection piece 3 is peeled off on the canvas surface 1A or the steel cord is on the canvas surface. It is displayed that you are jumping out of 1A. As described above, according to the present embodiment, when the canvas surface is peeled off or the steel cord is popped out, the detection piece is directly swung, so that the influence of dirt on the canvas surface is prevented. It is possible to judge or grasp the quality of the canvas surface accurately and easily without receiving any error.

[0011]

[Effect of device]

 As described above, according to the present invention, when peeling occurs on the surface of the handrail canvas or the steel cord is exposed, the protruding portion caused by the peeling or the protruding steel cord itself directly touches the detection piece. Since it is moved, it is possible to accurately and easily judge or grasp the quality condition of the canvas surface such as presence / absence of isolation and presence / absence of protruding steel cord.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of an embodiment in which the present invention is applied to an escalator.

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

FIG. 3 is a schematic explanatory view of an escalator to which the present invention is applied.

[Explanation of symbols]

 1 Handrail 1A Handrail canvas surface 2 Support member 3 Detection piece 4 Screw, nut 5 Switch 6 Tension spring 7 Display means

Claims (1)

[Scope of utility model registration request] Claims: 1. A plurality of steps connected endlessly and running between two entrances and exits, and balustrades arranged on the sides of the steps and along the line of the balustrade, and at substantially the same speed as the steps. In a state detection device for a handrail canvas surface in a passenger conveyor equipped with a handrail that travels in the same direction, the handrail is arranged to face the back canvas surface of the handrail and be separated by a predetermined distance, and is swingable on a support member. A handrail canvas surface state detection device for a passenger conveyor, comprising: a detection piece supported by the support; and a switch that operates when the detection piece swings.