JP2003341970A - Conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remove caught foreign matters by performing an inverse rotation operation by a caretaker at a job site while confirming safety, when foreign matter is caught in footsteps and a moving hand rail and can not be easily removed. <P>SOLUTION: Each of safety switches 18a, 18b, 18c and 18d for emergency is provided in the vicinity of each of an inlet safety sensor 17a for detecting catching of foreign matter, a skirt guard safety sensor 17b, a rubber safety sensor 17c and a footstep safety sensor 17d, etc. When each of the safety switches 18a, 18b, 18c and 18d for emergency corresponding to each of the safety sensors 17a, 17b, 17c and 17d for detecting catching of foreign matter is operated by the caretaker at the job site, the inverse rotation operation is performed for an escalator 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device having a function of performing reverse rotation to remove foreign matter when a foreign matter such as shoes is caught in a movable part and ensuring safety during operation.

[0002]

2. Description of the Related Art In recent years, with the advent of an aging society, the installation of conveyor devices, such as escalators and moving walkways, for carrying people's loads has been rapidly advanced. When operating such a conveyor device, ensuring the safety of users is the most important issue, and it is obliged to take the predetermined safety measures stipulated by the Ordinance for Enforcement of the Building Standards Act.

For example, the Building Standard Act Enforcement Order Article 129-1
In 1, when foreign matter such as shoes is caught in a gap between a pair of panels called skirt guards provided on both left and right sides of the step and the step moving between these skirt guards, the foreign matter such as shoes is prevented from being caught. It is obligatory to provide a skirt guard safety sensor (also called a skirt guard switch) for detecting. In addition, it is obligatory to provide an inlet safety sensor (also referred to as an inlet switch) that detects the entrapment of a foreign substance when the foreign substance is trapped in the entrance of a moving handrail called a handrail. It is stipulated that the operation of the conveyor device is stopped when the skirt guard safety sensor or the inlet safety sensor detects the entrapment of foreign matter.

In addition to the skirt guard safety sensor and the inlet safety sensor as described above, foreign matter is caught in the entrance of the step as a safety sensor for detecting the entrapment of the foreign matter in the step and the moving handrail. When
Known are comb safety sensors that detect the entrapment of foreign matter, and step safety sensors that detect the entrapment of foreign matter when foreign matter is caught between adjacent steps and the step rises. Safety sensors, step safety sensors, and the like have been widely installed in many conveyor devices. The operation of the conveyor device is also stopped when foreign matter is caught by the comb safety sensor and the step safety sensor.

The steps and moving handrails of the conveyor device are designed to circulate between the entrance and exit when the driving force of a motor having an electromagnetic brake is transmitted via a sprocket. And during the operation of the conveyor device,
When the above various safety sensors operate, the power supply to the motor and the brake coil in the electromagnetic brake is cut off, and the steps and moving handrails lose their driving force and the electromagnetic brake operates, causing the operation to stop. ing. It should be noted that the steps may be referred to as treads in a moving sidewalk of the conveyor device, but in the present specification, the notation is unified as the steps.

[0006]

When a conveyor device is stopped due to foreign matter being caught in a step or a moving handrail,
When foreign matter is removed and the safety sensor is released,
By operating a normal UP / DN switch provided on the operation panel, the electromagnetic brake is released, the motor is started, and the conveyor device can be operated again. Here, the operation panel is generally installed on a balustrade supporting a moving handrail, a skirt guard, etc., and can be operated by an administrator at the site where the conveyor device is installed. When the foreign matter sandwiched between the moving handrail and the moving handrail can be manually removed, the operation of the conveyor device can be restored by the operation of the manager on site.

However, when the foreign matter sandwiched between the steps and the moving handrail cannot be removed manually, the safety switch remains in operation, so that it is provided on the control panel installed in the machine room. It is necessary to operate the short-circuit switch to release the electromagnetic brake, start the motor, and reversely operate the conveyor device to remove the foreign matter that has been caught. Here, the machine room where the control panel is installed is
Usually, it is closed by a boarding board so that no one but maintenance personnel can enter. Therefore, in such a case, the operation of the conveyor device cannot be restored by the operation of the manager on site, and it is necessary to call the maintenance worker and wait for the work by the maintenance worker. Therefore, it takes a long time to restore the operation of the conveyor device, which inconveniences the user for a long time.

As a countermeasure against such a problem, for example, when the safety sensor is operated, the conveyor device is forcibly operated in the reverse direction for a predetermined distance to remove foreign matter trapped in the steps and the moving handrails. Has been done. However, when the conveyor device is operated in the reverse direction to remove the foreign matter, if the reverse operation is forcibly performed regardless of the situation in which the foreign matter is caught, it may cause an unexpected situation. Therefore, when the conveyor device is operated in the reverse direction to remove the foreign matter, it is desired to confirm in what state the foreign matter is sandwiched and operate the conveyor device in the reverse direction according to the situation.

The present invention was devised in view of the conventional circumstances as described above, and when a foreign object is caught in a step or a moving handrail and cannot be easily removed, a site manager confirms the safety. However, it is an object of the present invention to provide a conveyer device capable of performing a reverse rotation operation to remove foreign matter that has been caught.

[0010]

SUMMARY OF THE INVENTION A conveyor device according to the present invention conveys a load by circulatingly moving a plurality of steps and a moving handrail which are connected in an endless manner. A safety sensor that detects that the step and the moving handrail are provided after the step and the moving handrail are stopped, and a safety sensor that detects that the step and the moving handrail are stopped. When entrapment of a foreign object is detected by the sensor, the movement of the steps and the moving handrail is stopped, and the moving directions of the steps and the moving handrail before the stop are stored, and when the operating means is operated, It is characterized by comprising operation control means for moving the steps and the moving handrail in a direction opposite to the moving direction before the stop.

In this conveyor device, when foreign matter is caught in the step or the moving handrail and the movement of the step or the moving handrail is stopped, the operation means provided near the safety sensor is operated to control the operation. Since the means move the steps and moving handrails in the direction opposite to the direction before the stop, the on-site manager checks the operation method while checking the foreign matter being trapped. By operating the steps and the moving handrails in the opposite direction, the foreign matter caught in the steps or the moving handrails can be properly removed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, here, an example in which the present invention is applied to an escalator that conveys a load over the upper and lower floors will be specifically described, but the present invention is also effective for a moving walkway that conveys a load in the horizontal direction. Is applicable to.

An example of an escalator to which the present invention is applied is schematically shown in FIG. The escalator 1 shown in FIG. 1 is
It is installed in a building having upper and lower floors and is installed outdoors to transport a load between the upper floor and the lower floor, and is provided with a plurality of steps 2 which are endlessly connected and circularly moved.

A pair of skirt guards 3 are provided on the left and right sides of the plurality of steps 2 on the outward path from the entrance to the exit and along the movement trajectory of these steps 2. The pair of skirt guards 3 are provided so as to face each other so as to movably sandwich the step 2 with a slight gap. A balustrade 4 is erected on the upper part of the pair of skirt guards 3, respectively.
A handrail (moving handrail) 5 that circulates in synchronization with the step 2 is supported.

Below the step 2, an escalator 1 is provided.
Is provided with a frame portion called a truss 6 for supporting the own weight of the passenger and the load of passengers, and inside the truss 6, a step 2 on the return side and a step rail for guiding the movement of the step 2 are arranged. . Further, inside the truss 6, a machine room is provided, for example, in a horizontal portion on the upper floor side, and inside the machine room, the driving machine 7 that drives the steps 2 and the handrail 5, and the escalator 1 as a whole. A control panel (operation control means) 8 and the like for controlling the operation of is provided.

The driving machine 7 is driven by a torque generated by a motor 10 having an electromagnetic brake 9, and the driving force is transmitted to the driving sprocket 12 via a driving chain 11 to rotate the driving sprocket 12. It has become. One end side of a step chain 13 that connects a plurality of steps 2 is meshed with the drive sprocket 12, and when the drive sprocket 12 rotates,
The step chain 13 is fed. The other end of the step chain 13 is hung on a driven sprocket 14 installed inside the truss 6, for example, in a horizontal portion on the lower floor side. When the drive sprocket 12 rotates, the step chain 13 circulates between the drive sprocket 12 and the driven sprocket 14, and the step chain 1
The steps 2 connected at 3 are circulated. Further, in the handrail 5, the rotation of the drive sprocket 12 is indirectly transmitted via a chain or the like,
It circulates in synchronization with the step 2.

The control panel 8 has various electric circuits such as a CPU 15 for performing various arithmetic processes for controlling the operation of the entire escalator 1 and an inverter circuit 16 for converting DC power into AC power. Particularly, in the control panel 8 of the escalator 1 to which the present invention is applied, the CPU 15 receives the operation signals of various safety sensors described later and the input signals from the emergency safety switch (operating means), and based on these signals, relates to the reverse rotation operation. The direction, speed, etc. are determined, and the rotation of the motor 10 is controlled using the inverter circuit 16.

Further, in the escalator 1 to which the present invention is applied, as shown in FIG. 2, a protective device called an inlet guard is provided at the entrance of the handrail 5 into the skirt guard 3 and the exit of the return side. This inlet guard is provided with an inlet safety sensor 17a which detects that a foreign object such as a passenger's hand or luggage is caught in the entrance of the handrail 5 and stops the movement of the step 2 or the handrail 5. It has been incorporated.

The inlet safety sensor 17a is composed of a micro switch, and is operated by receiving stress when a foreign object is caught in the inlet of the handrail 5. The inlet safety sensor 17a is also provided at the exit of the handrail 5 on the return side, so that the escalator 1 can be operated in the reverse direction so that the moving direction of the handrail 5 is reversed.

Further, in the vicinity of the inlet safety sensor 17a, when the inlet safety sensor 17a operates and the movement of the step 2 and the handrail 5 is stopped, the escalator 1 is operated in reverse, that is, the step 2 An emergency safety switch 18a is provided as an operating means for performing an operation of moving the or handrail 5 in the direction opposite to that before the stop.

The emergency safety switch 18a corresponding to the inlet safety sensor 17a is composed of, for example, a key switch or a push button, and the inlet safety sensor 17a is provided.
It is arranged at a predetermined position on the balustrade 4 located in the vicinity.
The emergency safety switch 18a can be operated by the manager of the site where the escalator 1 is installed, and when operated by the manager of the site, an input signal for instructing reverse operation of the escalator 1 is provided. Is supplied to the CPU 15 of the control panel 8. In addition, balustrade 4
If the is a glass type, this emergency safety switch 1
8a is the inlet safety sensor 16a of the skirt guard 3
You may make it arrange | position in the vicinity.

When the inlet safety sensor 17a operates and the movement of the steps 2 and the handrail 5 is stopped, the CPU 15 of the control panel 8 stores the moving direction of the steps 2 and the handrail 5 before the stop. Every, inlet safety sensor 1
The emergency safety switch 18a corresponding to 7a is operated, and the escalator 1 is operated from the emergency safety switch 18a.
When an input signal for instructing reverse rotation of the
The operation control for moving the or handrail 5 at a low speed in the opposite direction to that before the stop is performed.

Further, in the escalator 1 to which the present invention is applied, as shown in FIG. 3, the step 2 and the skirt guard 3 which circulate and move in a predetermined position of the skirt guard 3 near the entrance and the exit. A skirt guard safety sensor 17b is provided which detects that a foreign object such as a passenger's shoes or luggage is caught in the gap between them and stops the movement of the steps 2 and the handrail 5.

The skirt guard safety sensor 17b is composed of a micro switch, and is operated by receiving stress when foreign matter is caught in the gap between the step 2 and the skirt guard 3 which are circulating. There is.

Further, this skirt guard safety sensor 17
An emergency safety switch 18b for operating the escalator 1 in the reverse direction when the skirt guard safety sensor 17b operates to stop the movement of the steps 2 and the handrail 5 is provided near b. ing.

The emergency safety switch 18b corresponding to the skirt guard safety sensor 17b is composed of, for example, a key switch or a push button, and is arranged at a predetermined position of the balustrade 4 located near the skirt guard safety sensor 17b. There is. The emergency safety switch 18b, like the emergency safety switch 18a described above, can be operated by an on-site manager. When operated by the on-site administrator, the escalator 1 can be operated in reverse. An input signal for instructing is supplied to the CPU 15 of the control panel 8. When the balustrade 4 is a glass type, the emergency safety switch 18b may be arranged near the skirt guard safety sensor 17b of the skirt guard 3.

When the skirt guard safety sensor 17b operates and the movement of the steps 2 and the handrail 5 is stopped, the CPU 15 of the control panel 8 stores the moving direction of the steps 2 and the handrail 5 before the stop. Incidentally, when the emergency safety switch 18b corresponding to the skirt guard safety sensor 17b is operated and an input signal for instructing the reverse operation of the escalator 1 is supplied from the emergency safety switch 18b,
The operation control for moving the steps 2 and the handrail 5 at a low speed in the opposite direction to that before the stop is performed.

Further, in the escalator 1 to which the present invention is applied, as shown in FIG. 4, a member called a comb 19 is provided at the entrance of the step 2 into the truss 6 and the exit of the return side. Below the comb 19, there is provided a comb safety sensor 17c which detects that foreign matter such as passenger's shoes or luggage is caught in the entrance of the step 2 and stops the movement of the step 2 or the handrail 5. There is.

The comb safety sensor 17c is composed of a micro switch, and is operated by receiving stress when a foreign object is caught in the entrance of the step 2. At the exit of the step 2 on the return side, the comb safety sensor 1
The reason why 7c is provided is to cope with the case where the escalator 1 is reversely driven and the moving direction of the step 2 is reversed.

In the vicinity of the comb safety sensor 17c, when the comb safety sensor 17c operates and the movement of the steps 2 and the handrail 5 is stopped, the escalator 1
An emergency safety switch 18c is provided for performing a reverse operation of the.

The emergency safety switch 18c corresponding to the comb safety sensor 17c is composed of, for example, a key switch or a push button, and is provided at a predetermined position of the balustrade 4 located near the comb safety sensor 17c. The emergency safety switch 18c can be operated by an on-site manager, like the above-described emergency safety switches 18a and 18b. When operated by the on-site administrator, the escalator 1 is reversed. An input signal for instructing operation is supplied to the CPU 15 of the control panel 8. When the balustrade 4 is a glass type, the emergency safety switch 18c is connected to the comb safety sensor 1 of the skirt guard 3.
It may be arranged near 7c.

When the comb safety sensor 17c operates and the movement of the steps 2 and the handrail 5 is stopped, the CPU 15 of the control panel 8 stores the moving direction of the steps 2 and the handrail 5 before the stop. Every time, when the emergency safety switch 18c corresponding to the comb safety sensor 17c is operated and an input signal for instructing the reverse operation of the escalator 1 is supplied from the emergency safety switch 18c, the steps 2 and the handrail 5 are stopped. The operation control is performed such that the operation is performed at a low speed in the opposite direction to the previous one.

Further, in the escalator 1 to which the present invention is applied, as shown in FIG. 5, the step 2 adjacent to the step 2 adjacent to the step 2 near the entrance and the exit is moving under the step movement.
A step safety sensor 17d is provided to stop the movement of the step 2 and the handrail 5 by detecting that foreign matter such as passenger's shoes or luggage is caught in the gap.

The step safety sensor 17d is composed of a micro switch, and operates when foreign matter is caught in the gap between the adjacent steps 2 and the step 2 floats up.

Also, in the vicinity of the step safety sensor 17d, when the step safety sensor 17d operates and the movement of the step 2 and the handrail 5 is stopped, the escalator 1
An emergency safety switch 18d is provided for performing an operation of reversing the vehicle.

The emergency safety switch 18d corresponding to the step safety sensor 17d is composed of, for example, a key switch or a push button, and is arranged at a predetermined position of the balustrade 4 located near the step safety sensor 17d. The emergency safety switch 18d can be operated by an on-site manager, like the above-described emergency safety switches 17a, 17b, 17c. When operated by the on-site administrator, the escalator 1 An input signal for instructing the reverse rotation operation is supplied to the CPU 15 of the control panel 8. When the balustrade 4 is a glass type, the emergency safety switch 18d may be arranged near the step safety sensor 17d of the skirt guard 3.

When the step safety sensor 17d operates and the movement of the steps 2 and the handrail 5 is stopped, the CPU 15 of the control panel 8 stores the moving direction of the steps 2 and the handrail 5 before the stop. If the emergency safety switch 18d corresponding to the step safety sensor 17d is operated and an input signal for instructing the reverse operation of the escalator 1 is supplied from the emergency safety switch 18d, the steps 2 and the handrail 5 are stopped. The operation control is performed such that the operation is performed at a low speed in the opposite direction to the previous one.

Further, in the escalator 1 to which the present invention is applied, the operation panel 20 is provided at the ends of the balustrade 4 on the entrance side and the exit side.
The operation panel 20 is provided with an UP / DN switch for instructing the operation direction of the escalator 1. The UP / DN switch provided on the operation panel 20 is also the emergency safety switch 17a, 17b, 17 described above.
Similar to c and 17d, it can be operated by an on-site manager, and when operated by the on-site manager, an input signal for instructing the driving direction of the escalator 1 is input to the control panel 8.
Is supplied to the CPU 15.

The CPU 15 of the control panel 8 is, for example, the step 2
After removing the foreign matter caught in the handrail 5 or
When the UP / DN switch provided on the operation panel 20 is operated and an input signal for instructing the operation direction of the escalator 1 is supplied from this UP / DN switch, the operation of the escalator 1 is restarted and the instruction is given. The operation control for moving the steps 2 and the handrail 5 in the normal direction at a normal speed is performed.

Here, the escalator 1 to which the present invention is applied.
The switching of the operation in (1) will be described with reference to the electrical circuit configuration diagram of FIG.

In the escalator 1 to which the present invention is applied, as shown in FIG. 6, various safety sensors such as an inlet safety sensor 17a, a skirt guard safety sensor 17b, a comb safety sensor 17c and a step safety sensor 17d are connected in series. , When any of these safety sensors are activated,
The circuit is cut off and the operation of the escalator 1 is stopped. Further, in the escalator 1 to which the present invention is applied, various safety sensors 17a, 17b, 17c, 17
Emergency safety switch 1 corresponding to each in the vicinity of d
8a, 18b, 18c, 18d are provided, and when the emergency safety switch corresponding to the operated safety sensor is operated, the circuit is short-circuited and the escalator 1 can be operated in reverse. . Further, when the emergency safety switch is operated, as described above, the input signal for instructing the reverse operation of the escalator 1 is the CPU of the control panel 8.
15 are supplied.

The normal operating direction of the escalator 1 is switched by the UP / DN switch 21 provided on the operation panel 20. That is, when the escalator 1 is operated to move up (UP direction), the manager of the site does UP /
The DN switch 21 is operated to the UP side. As a result, a circuit that sequentially connects the power supply RC, the inlet safety sensor 17a, the skirt guard safety sensor 17b, the comb safety sensor 17c, the step safety sensor 17d, the UP / DN switch 21 (UP side), the U relay coil 22, and the power supply SC is configured. Then, the U relay coil 22 is excited.

When the U relay coil 22 is excited, the brake coil is excited, the electromagnetic brake 9 of the driving machine 7 is released, and the motor 10 is supplied with power to rotate and drive the motor 10. The escalator 1 will move up. When the U relay coil 22 is excited, the relay contact 23 is held in the ON state,
If the UP / DN switch 21 is operated once to the UP side,
The ascending operation of the escalator 1 is continued.

Further, the escalator 1 is lowered (to the DN direction).
When operating, the site manager operates the UP / DN switch 21 to the DN side. Thereby, the power supply RC, the inlet safety sensor 17a, the skirt guard safety sensor 1
7b, comb safety sensor 17c, step safety sensor 17d,
UP / DN switch 21 (DN side), D relay coil 2
4. A circuit for connecting the power supply SC in this order is constructed, and the D relay coil 24 is excited.

When the D relay coil 24 is excited, the brake coil is excited, the electromagnetic brake 9 of the driving machine 7 is released, and the phase of the power supplied to the motor 10 is switched so that the motor 10 operates. The escalator 1 is driven to rotate in the opposite direction and descends. When the D relay coil 24 is excited, the relay contact 25
Is kept in the ON state, the UP / DN switch 21
When is operated once to the DN side, the descending operation of the escalator 1 is continued.

While the escalator 1 is in operation, foreign matter is caught in the steps 2 and the handrail 5, and various safety sensors 17a,
When any of 17b, 17c, and 17d operates, the circuit is cut off, and the power supply to the motor 10 and the brake coil is cut off. As a result, the steps 2 and the handrail 5 lose the driving force, and the braking force of the electromagnetic brake 9 acts and stops.

As described above, the safety sensors 17a, 17b,
When one of 17c and 17d operates and the movement of the step 2 and the handrail 5 stops, the manager of the site where the escalator 1 is installed confirms the foreign matter trapping situation, and depending on the situation, , Operate the corresponding emergency safety switch provided near the activated safety sensor. This allows
The circuit is short-circuited so that the escalator 1 can be operated in the reverse direction, and the CPU 15 of the control panel 8 is supplied with an input signal instructing the reverse operation of the escalator 1.

When the emergency safety switch corresponding to the operated safety sensor is operated and the input signal for instructing the reverse operation of the escalator 1 is supplied from the emergency safety switch, the CPU 15 electromagnetically brakes the drive unit 7. 9 is opened, and the inverter circuit 16 is used to control the motor 10 to rotate in the direction opposite to that before the stop and at a lower speed than during normal operation. As a result, the steps 2 and the handrail 5 move at a low speed in the direction opposite to the direction before the stop, and the foreign matter caught in the steps 2 and the handrail 5 is removed.

At this time, the CPU 15 of the control panel 8 determines the movement amount for moving the steps 2 and the handrail 5 in the opposite direction according to the operation time or the operation amount of the emergency safety switch corresponding to the operated safety sensor. It is desirable to do. That is, when the emergency safety switch is composed of, for example, a key switch, the steps 2 are separated by a distance corresponding to the time when the key switch is turned and the number of times the key switch is turned.
Or the handrail 5 is moved in the opposite direction, and when the emergency safety switch is composed of, for example, a push button, the steps can be performed for a distance depending on the time during which the push button is pressed or the number of times the push button is pressed. It is desirable to move 2 and the handrail 5 in the opposite direction.

As described above, the CPU 15 of the control panel 8
If the amount of movement to move the steps 2 and the handrail 5 in the opposite direction is decided according to the operation time or the operation amount of the emergency safety switch corresponding to the operated safety sensor, the manager on site can By operating the emergency safety switch in accordance with the state of a foreign object being caught, the amount of movement for moving the steps 2 and the handrail 5 in the opposite direction can be adjusted,
It is possible to properly remove the foreign matter caught in the steps 2 and the handrail 5.

In the escalator 1, the reverse operation as described above is performed only when the emergency safety switch provided in the vicinity of the operated safety sensor is operated, and the activated safety sensor is operated. When another emergency safety switch that does not correspond is operated, the circuit is not short-circuited, so that electric power is not supplied to the motor 10 and the brake coil, and the above-described reverse rotation operation is not performed. As described above, in the escalator 1 to which the present invention is applied, the operation of the emergency safety switch at a remote position where the state of the foreign matter being caught cannot be confirmed is invalidated, so that the manager of the site can confirm the state of the foreign matter being caught. After confirming the above, it is possible to prompt an appropriate reverse operation operation.

When the foreign matter trapped in the step 2 or the handrail 5 is removed, the operation of the safety sensor that detects the foreign matter trapped is released, so that the escalator 1 returns to the normal operable state. Then, the escalator 1 is returned to the normal operation by the site manager operating the UP / DN switch 21 provided on the operation panel 20 to the UP side or the DN side.

As described above, in the escalator 1 to which the present invention is applied, the emergency safety switches 18a, 18b, 1 are placed at positions such as the balustrade 4 which can be operated by a manager on site.
8c and 18d are provided respectively, and when any of the inlet safety sensor 17a, the skirt guard safety sensor 17b, the comb safety sensor 17c, and the step safety sensor 17d operates to stop the movement of the step 2 and the handrail 5. Then, by operating the corresponding emergency safety switch provided near the activated safety sensor, the escalator 1
Can be operated in reverse. Therefore, even if foreign matter is caught in the steps 2 and the handrail 5 and the caught foreign matter cannot be removed manually, there is no need to call a maintenance worker to wait for work by the maintenance worker and The administrator can remove the trapped foreign matter and quickly restore the escalator 1 to the normal operation.

Further, in this escalator 1, the emergency safety switches 18a, 18 for performing the reverse operation are operated.
b, 18c, 18d are various safety sensors 17a, 17
b, 17c, and 17d are provided in the vicinity of each of them, so that the manager of the site can reverse the escalator 1 according to the situation while confirming the situation where foreign matter is caught, It is possible to properly and surely perform the work of removing the foreign matter sandwiched between the handrail 5 and the handrail 5.

Further, in this escalator 1, when the reverse operation for removing foreign matter is performed, the moving speed thereof is slower than that of the normal time, so that the foreign matter caught between the step 2 and the handrail 5 is removed. Can be done safely.

By the way, when the operation state of the escalator 1 changes as described above, passengers of the escalator 1 will feel uneasy if the information to that effect is not notified. Therefore, in the escalator 1 to which the present invention is applied, as shown in FIG. 1, for example, in the machine room in the truss 6,
A voice guidance device 26 is provided as a notification means.

The voice guidance device 26 is provided when the above-mentioned various safety sensors 17a, 17b, 17c and 17d are operated to stop the operation of the escalator 1 and when the above-mentioned emergency safety switches 17a, 17b, 17c and 17d are provided. When the escalator 1 is operated in the reverse direction by operating the escalator 1 and when the escalator 1 restarts normal operation due to removal of foreign objects trapped in the steps 2 and the handrail 5, when the escalator 1 changes its operating state. In addition, for example, the speaker 27 installed near the entrance or exit of the balustrade 4 announces information to that effect and informs the passengers of the escalator 1 to that effect.

More specifically, the voice guidance device 26 includes various safety sensors 17a, 17b, 17c and 17d described above.
Is activated and the operation of the escalator 1 is stopped,
For example, the speaker 27 announces a message such as "The escalator has been emergency stopped. Please wait until the staff arrives." Further, the voice guidance device 26 includes the emergency safety switch 17a,
When the escalator 1 is operated in reverse by operating 17b, 17c, 17d, the speaker 27 announces a message such as "I will slowly drive the escalator slowly in the opposite direction. Please be careful." In addition, the voice guidance device 26 removes the foreign matter sandwiched between the steps 2 and the handrail 5, and the escalator 1
When restarting the normal operation of the speaker 2, a message such as "work has been completed. Please be careful as the operation of the escalator will be restarted from now on."
Announce from 7.

As described above, by providing the voice guide device 26 for notifying the passengers of the escalator 1 when the operating state of the escalator 1 changes, the passengers of the escalator 1 can be appropriately informed of the situation. This can give a sense of security and encourage calm coping, and can also draw attention to the people around.

An example of the escalator to which the present invention is applied has been specifically described above, but the present invention is not limited to the above example, and various modifications can be made if necessary.

For example, in the above-described escalator 1, as the safety sensor for detecting the entrapment of foreign matter, the inlet safety sensor 17a, the skirt guard safety sensor 17b,
Although four safety sensors, the comb safety sensor 17c and the step safety sensor 17d, are provided, other safety sensors may be provided in addition to or instead of these.

Further, in the above-described escalator 1, as a notification means for notifying the passengers of the escalator 1 when a change occurs in the operating state of the escalator 1, a voice for announcing a message according to the operating status from the speaker 27. Although the guide device 26 is provided, instead of the voice guide device 26, for example, a device for notifying the operation status of the escalator by a warning sound or a device for notifying the operation status of the escalator by a lamp display or the like is provided as the notification means. You may do it.

[0063]

According to the conveyor device of the present invention, the on-site manager removes the trapped foreign matter and immediately returns to normal operation without waiting for the maintenance worker to wait for the work by the maintenance worker. Therefore, it is possible to prevent the problem that the user is inconvenient for a long time before returning to normal driving.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a schematic configuration of an escalator to which the present invention is applied.

FIG. 2 is an enlarged side view showing the vicinity of an inlet safety sensor installation position of the escalator.

FIG. 3 is an enlarged perspective view showing the vicinity of a skirt guard safety sensor installation position of the escalator.

FIG. 4 is an enlarged side view showing the vicinity of a comb safety sensor installation position of the escalator.

FIG. 5 is an enlarged side view showing the vicinity of a step safety sensor installation position of the escalator.

FIG. 6 is an electrical circuit configuration diagram of the escalator.

[Explanation of symbols]

1 escalator 2 steps 3 skirt guard 4 balustrade 5 handrail (moving handrail) 8 control panel (operation control means) 17a inlet safety sensor 17b skirt guard safety sensor 17c comb safety sensor 17d step safety sensor 18a, 18b, 18c, 18d emergency Safety switch (operation means)

Claims (8)

[Claims] 1. A conveyor device that conveys a load by circulatingly moving a plurality of steps and a moving handrail that are connected endlessly, and a safety sensor that detects that a foreign object is trapped in the steps or the moving handrail. Provided in the vicinity of the safety sensor, operating means for performing an operation to re-activate the steps and the moving handrail after the steps and the moving handrail are stopped, and when the entrapment of a foreign object is detected by the safety sensor, While stopping the movement of the steps and the moving handrails, storing the movement direction of these steps and the moving handrails before the stop,
A conveyor device comprising: an operation control unit that moves the step and the moving handrail in a direction opposite to a moving direction before the stop when the operating unit is operated. 2. The operation control means controls the moving speeds of the steps and the moving handrails so that the moving speeds when the steps and the moving handrails are moved in the opposite directions are lower than the moving speed before the stop. At the same time, the movement amount for moving the step and the moving handrail in the opposite direction is determined according to the operation time or the operation amount of the operation means. 3. The safety sensor includes an inlet safety sensor for detecting the entrapment of foreign matter into the circulation handrail inlet, and the operating means is provided in the vicinity of the inlet safety sensor. The conveyor device according to claim 1 or 2. 4. The safety sensor includes a skirt guard safety sensor for detecting the entrapment of foreign matter between the step and a skirt guard provided on the side of the step, and in the vicinity of the skirt guard safety sensor. The conveyor device according to any one of claims 1 to 3, wherein the operating means is provided in the. 5. The safety sensor includes a comb safety sensor for detecting the entrapment of a foreign object in the step entrance, and the operating means is provided in the vicinity of the comb safety sensor. The conveyor device according to any one of claims 1 to 4. 6. The safety sensor includes, as a safety sensor, a step safety sensor for detecting the entrapment of foreign matter between the step and another step adjacent thereto, and the operating means is provided in the vicinity of the step safety sensor. The conveyor device according to any one of claims 1 to 5, which is provided. 7. The safety sensor includes a plurality of types of safety sensors for detecting the entrapment of foreign matter in different places, and a plurality of operation means corresponding to each safety sensor are provided near each safety sensor. The operation control means, among the plurality of operating means, only before the operation means provided in the vicinity of the safety sensor that detects the entrapment of the foreign matter is operated, before stopping the steps and the moving handrail. The conveyor device according to any one of claims 1 to 6, wherein the conveyor device is moved in a direction opposite to a moving direction. 8. When the movement of the steps and the moving handrails is stopped, or when the operation control means moves the steps and the moving handrails in the opposite direction, or when the foreign matter is removed and the conveyor device is normally operated. The conveyor device according to any one of claims 1 to 7, further comprising informing means for informing the surroundings of the fact that the operation is restored at least in any case.