JP2002128447A - Passenger conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor device capable of easily coping with the malfunction of treads by operating a malfunction detecting unit in the initial stage when a malfunction is generated in the treads. SOLUTION: Multiple treads 3 are connected to each other so as to provide a transport belt circulating in the predetermined route inside a main frame. A malfunction detecting unit 12 provided with a needle-like detecting part is installed in the main frame, and the detecting part is arranged close to the treads moving in the predetermined route. A control means 20 is provided so as to be operated through the operation of the malfunction detecting unit 12 when the treads 3 moving outside the predetermined route is brought in contact with the detecting part and so as to control a passenger conveyor in an emergency. With this structure, when a malfunction is generated in the fitting condition of the treads 3, the malfunction detecting unit 12 is operated in the initial time so as to control for prevention, and prevents the generation of accident due to a collision of a fallen member of the tread 3 with equipment inside the main frame. A measure to cope with the generation of malfunction of the treads 3 is thereby facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger conveyor device such as an escalator or a moving sidewalk in which a transport band formed by connecting a number of treads in an endless manner circulates in a main frame.

[0002]

2. Description of the Related Art FIGS.
8 is a diagram showing a conventional passenger conveyor device shown in Japanese Patent Application Publication No. 887, FIG. 6 is a side view conceptually showing a lower end portion of an escalator, and FIG. 7 is an enlarged side view showing a tread plate portion in FIG. FIG. 8 is an enlarged view showing a cross section taken along line AA of FIG.
FIG. 7 is a diagram corresponding to FIG. 7 for explaining an operation state of the abnormality detector of FIG. 6; In the figure, 1 is a main frame of the escalator, and 2 is a rail mounted along the length of the main frame 1.

[0003] Reference numeral 3 denotes a step plate body comprising a step provided with a step plate, a bracket 4 provided on both sides in the width direction, a holding member 6 provided opposite to the bracket 4 and fastened by a mounting bolt 5, and a bracket. Shaft 7 and shaft 7 which are arranged between each other and held by the holding member 6
Are formed by rolling wheels 8 which are respectively pivotally attached to both ends of the rail and guided by the rail 2.

A plurality of treads 3 are connected endlessly to form a transport belt 9 which is driven by a driving machine (not shown) to circulate along a predetermined path in the main frame 1. Reference numeral 10 denotes an abnormality detector mounted on the main frame 1.
Is pressed by the side surface in the width direction and rotates.

[0005] The conventional passenger conveyor device is constructed as described above. When the driving device is energized, the transport belt 9 circulates and the rolling wheels 8 of the tread plate 3 are guided by the rails 2 as shown in FIG. As described above, the tread plate 3 moves on a predetermined path in the main frame 1. Then, in the normal state, the detection unit 11 of the abnormality detector 10 is pressed by the side edge of the tread plate body 3, and the detection unit 11 is maintained at the normal position as shown in FIG. I will not do it.

When the mounting bolt 5 of the holding member 6 holding the shaft 7 on the bracket 4 is loosened and the mounting bolt 5 and the holding member 6 fall off from the bracket 4, the tread plate 3 moves the tread surface. When the posture is downward, the bracket 4 separates from the shaft 7 and the tread plate 3 is displaced downward and moves out of the predetermined path as shown in FIG. In this state, the detection unit 11 of the abnormality detector 10 is displaced from the side edge of the tread plate 3 and displaced toward the center of the tread plate 3 as shown in FIG.

Then, the abnormality detector 10 is operated by the displacement of the detection unit 11, and the control device (not shown) of the passenger conveyor is operated through the operation of the abnormality detector 10 so that the operation of the passenger conveyor is abnormal. The system is stopped or an abnormality is notified to a control room or the like of the passenger conveyor.

[0008]

In the conventional passenger conveyor device as described above, in a state where the holding member 6 is dropped from the bracket 4 and the bracket 4 is separated from the shaft 7 and the tread plate 3 is excessively displaced downward, The abnormality detector 10 operates to detect the occurrence of an abnormality. For this reason, the retainer 6 that has fallen off,
There is a possibility that the excessively displaced tread plate body 3 collides with other devices and members provided in the main frame 1 to cause a secondary accident such as damaging those devices and the like. For this reason, there has been a problem that a great deal of cost and time are required for recovery when an abnormality occurs in the tread plate 3.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a passenger conveyor device in which an abnormality detector operates at an early stage of occurrence of an abnormality in a tread plate.

[0010]

In the passenger conveyor device according to the present invention, a number of tread plates are connected endlessly and arranged in the main frame of the passenger conveyor, and are driven by a driving machine to drive the inside of the main frame. A transport belt that circulates along a predetermined path and a base equipped with a needle-shaped detection unit are attached to the main frame, and the detection unit is arranged close to a tread plate that moves along the predetermined path, and moves outside the predetermined path. An abnormality detector which is activated by the contact of the stepping plate body contacting the detection unit, and a control means which operates through the operation of the abnormality detector and controls the passenger conveyor in an abnormal state are provided.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 5 are views showing an example of an embodiment of the present invention. FIG. 1 is a view showing a tread plate portion at a lower end portion of an escalator, which is equivalent to FIG. 7 described above, and FIG. FIG. 3 is an enlarged view of the detector, FIG. 3 is a plan view of FIG. 2, FIG. 4 is an equivalent view of FIG. 1 for explaining an operation state of the abnormality detector of FIG. 1, and FIG. 5 is a reduced plan view of FIG. Except for FIGS. 1 to 5, a passenger conveyor device is configured similarly to the above-described passenger conveyor device of FIGS. 6 to 9.

In the drawing, reference numeral 2 denotes a rail mounted along the length of the main frame 1, and 3 denotes a step plate body comprising a step provided with a step plate, and a bracket 4 and a bracket 4 provided on both sides in the width direction, respectively. A holding member 6 provided oppositely and fastened by a mounting bolt 5, a shaft 7 disposed between the brackets 4 and held by the holding member 6, and pivotally attached to both ends of the shaft 7 and guided on the rail 2. The rolling wheel 8 is formed.

Further, a plurality of treads 3 are connected endlessly to form a transport band 9 which is driven by a driving machine, which will be described later, and circulates along a predetermined path in the main frame 1. Numeral 12 denotes an abnormality detector which is a base 13 fixed to the main frame 1 and a detection switch 1 provided on the base 13 and provided with an operation section 14 on one side.
5. A camshaft 16 erected from the base 13 and disposed opposite the operating portion 14, a cam 18 pivotally supported by the camshaft 16 and provided with a recess 17 on one side into which the operating portion 14 fits. And a detection portion 19 having a needle shape, one end of which is fixed to the other side of the cam 18 and whose length is horizontally arranged.

Reference numeral 20 denotes a control means for the passenger conveyor connected to the abnormality detector 12, reference numeral 21 denotes a drive unit provided on the main frame 1 and connected to the control means 20 to drive the transport belt 9 to circulate, 22
A notification device is provided in the control room of the passenger conveyor and is connected to the control means 20 to acoustically and visually notify the occurrence of an abnormality described later.

In the passenger conveyor device constructed as described above, when the driving device 21 is energized, the transport belt 9 circulates and the rolling wheels 8 of the tread plate 3 are guided by the rails 2 as shown in FIG. In this state, the tread plate 3 moves on a predetermined path in the main frame 1. In the normal state, the detection unit 1 of the abnormality detector 12
9 is arranged in parallel with the tread surface of the tread plate 3 close to the tread surface, and a gap of several millimeters is formed between the detection unit 19 and the tread surface of the tread plate 3.

In the normal state, that is, in the state shown in FIG. 1, the tread plate 3 does not contact the detecting section 19 of the abnormality detector 12. For this reason, since the detecting section 19 is maintained at the normal position and the operating section 14 of the detecting switch 15 is arranged in the recess 17 of the cam 18 in the fitted state, the abnormality detector 1
2 does not work.

Further, when the mounting bolt 5 of the holding member 6 holding the shaft 7 on the bracket 4 is loosened, the tread plate 3 is displaced downward when the tread plate 3 is in a posture in which the tread surface faces downward. The vehicle moves outside the predetermined route as shown in FIG. Then, in the initial state of the downward displacement of the tread plate 3, the detection unit 19 of the abnormality detector 12 contacts the lower surface of the tread plate 3 and is displaced as shown in FIG. The cam 18 is rotated by the displacement of the detection unit 19, and the detection switch 15 is moved from the recess 17.
Is deviated.

As a result, the detection switch 15 operates,
By this operation, the control means 20 operates to instruct the driving machine 21 to stop the passenger conveyor in the event of an abnormal condition, or the notification device 22 is energized to notify the occurrence of abnormality to the control room or the like of the passenger conveyor. Abnormal control is performed.

As described above, when the mounting bolt 5 of the tread plate 3 is loosened, the tread plate 3 starts to deviate from the predetermined path, and the abnormality detector 12 operates in an initial state of occurrence of an abnormality. The operation of the abnormality detector 12 causes the control means 20 to operate.
Operates to control the passenger conveyor at the time of abnormality.

Therefore, a secondary accident occurs due to the occurrence of an abnormality as in the configuration of FIGS. 6 to 9 described above and the operation of the abnormality detector 10 in a state where the tread plate 3 is excessively displaced downward. Can be eliminated. That is, the abnormality detector 12 operates in the initial state of the occurrence of the abnormality of the tread plate body 3, and the abnormality control of the passenger conveyor is performed in a preventive manner.

Thus, it is possible to prevent the accident that occurs when the dropped retainer 6 and the excessively displaced tread plate 3 collide with other devices and members of the passenger conveyor provided in the main frame 1. it can. Therefore, it is possible to easily take a countermeasure when an abnormality occurs in the tread plate body 3, to shorten a recovery work time when the abnormality occurs, and to reduce a recovery cost when the abnormality occurs.

[0022]

As described above, according to the present invention, a large number of tread plates are connected endlessly and arranged in the main frame of a passenger conveyor, and are driven by a driving machine to circulate along a predetermined path in the main frame. The transport belt and the base equipped with the needle-shaped detection unit are mounted on the main frame, and the detection unit is arranged close to the tread plate moving along the predetermined path, and the tread plate moving outside the predetermined path is detected. An abnormality detector which is activated by contact with the part, and a control means which operates through the operation of the abnormality detector and controls the passenger conveyor in an abnormal state are provided.

As a result, the mounting bolts that fasten the tread plate to the transport belt are loosened, and the detection unit of the abnormality detector contacts the tread plate in an initial state of occurrence of an abnormality in which the tread plate starts to deviate from a predetermined path. Displace. The displacement of the detection section activates the abnormality detector, and the operation activates the control means to perform the abnormal control of the passenger conveyor. As described above, the abnormality detector operates in the initial state of the occurrence of the abnormality in the mounting state of the tread plate, and the abnormal time control is performed proactively. For this reason, it is possible to prevent an accident that occurs when the holding member from which the tread plate has fallen or the excessively displaced tread plate collides with other devices and members provided in the main frame. Therefore, it is possible to easily take a countermeasure when an abnormality occurs in the tread plate body, to reduce a recovery cost in the event of an abnormality, and to shorten a recovery operation time.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention and is a view showing a tread plate portion at a lower end portion of an escalator, and is a view corresponding to FIG. 7 described later.

FIG. 2 is an enlarged view of the abnormality detector of FIG. 1;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a diagram illustrating an operation state of the abnormality detector of FIG. 1;
Equivalent figure.

FIG. 5 is a reduced plan view of FIG. 4;

FIG. 6 is a side view conceptually showing a lower end of a conventional escalator.

FIG. 7 is an enlarged side view showing a tread plate portion of FIG. 6;

FIG. 8 is an enlarged view showing a cross section taken along line AA of FIG. 6;

FIG. 9 is a diagram illustrating an operation state of the abnormality detector in FIG. 6;
Equivalent figure.

[Explanation of symbols]

Reference Signs List 1 main frame, 3 treads, 9 transport belt, 12 abnormality detector, 13 base, 19 detector, 20 control means, 21
Driving machine.

Claims (1)

[Claims] 1. A conveyor belt in which a number of tread plates are connected endlessly and are arranged in a main frame of a passenger conveyor, and are driven by a driving machine to circulate on a predetermined path in the main frame.
A base equipped with a needle-shaped detection unit is mounted on the main frame, the detection unit is disposed close to the tread plate moving along the predetermined path, and the tread plate moving outside the predetermined path is A passenger conveyor device comprising: an abnormality detector that operates by contacting the detection unit; and control means that operates through the operation of the abnormality detector and controls the passenger conveyor when an abnormality occurs.