JP3228294B1 - Man conveyor - Google Patents

Abstract

[Summary] [PROBLEMS] Except for inspection work, it has been impossible to detect the sticking of the brake lining. An endlessly arranged step, an endless handrail running in the same direction as the step, a handrail speed detecting means for detecting a moving speed of the handrail, and a moving speed of the step Speed detecting means for detecting the speed, and the speed of the step or the handrail detected by the step speed detecting means or the handrail speed detecting means reaches a predetermined speed after receiving the operation command of the step and the handrail. After detecting the value that does not reach the predetermined first reference speed after the lapse of the first predetermined time necessary for
Control means for judging an abnormality and outputting an operation stop.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an escalator,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a man conveyor such as an autoloader, and more particularly to a man conveyor suitable for automatically detecting troubles occurring in the man conveyor and preventing passengers from being damaged and equipment from being damaged.

[0002]

2. Description of the Related Art In this type of man conveyor, there is an apparatus disclosed in Japanese Patent Publication No. 7-12903, for example, which automatically detects a trouble in running of a step and a handrail. FIG. 4 shows, for example,
FIG. 2 is a configuration diagram illustrating a structure of a man conveyor disclosed in Japanese Patent Publication No. 2903, and FIG. 5 is a detailed diagram illustrating a detailed structure of a driving unit of a handrail. In the figure, reference numeral 1 denotes an endless step belt of a man conveyor, 2 denotes a handrail, and
Is constructed by continuously mounting a step 6 on a pair of left and right endless chains 5 wound around an upper sprocket 3 and a lower sprocket 4. Reference numeral 7 denotes a guide rail of the endless step band 1. The upper sprocket 3 is driven by a driving machine 8 via a chain 9 to drive the step belt driving wheel 1.
0 and is integrally attached to the
The endless step band 1 is fed and driven at a constant speed by the low speed drive of 0.

On the other hand, handrails 2 provided on both sides of an endless step band 1 are guided by a group of guide rollers 11 so that the handrail 2 is tensioned by the handrail drive wheels 1.
2 and is driven by a driving force given by frictional contact with the handrail driving wheel 12. The handrail drive wheel 12 includes a sprocket 13 and a step belt drive wheel 1 integrally attached thereto.
A driving force is applied from the step belt driving wheel 10 through a handrail driving chain 15 wound around a handrail driving sprocket 14 integrally attached to the handrail 2. Feed driving is performed in synchronization with the movement of the step band 1.

On the other hand, the speed detecting section of the step 6 and the handrail 2 is constructed as shown in FIG. 2, and a step speed detecting means 16 using a tachogenerator (speed generator) or the like.
, The handrail speed detecting means 17 using a tachogenerator (speed generator) or the like similarly detects the speed of the handrail 2.

In the above-mentioned man conveyor, the handrail caused by the slip of the handrail drive wheel 12 is determined based on the difference between the speed information of the step and the handrail from the step speed detecting means 16 and the handrail speed detecting means 17. Unsynchronization between the speed and the step speed is detected, and when those factors occur, the man conveyor is stopped to prevent an accident caused by the unsynchronization between the handrail speed and the step speed.

[0006]

In the above-described method, the handrail driving wheel 12 is controlled based on the speed difference detected by the step speed detecting means 16 and the handrail speed detecting means 17 during the operation of the conveyor. Although it was possible to detect the unsynchronization between the steps and the handrails due to slippage, etc., the detection based on the speed difference could only be seen immediately after the start and stop of the conveyor. It was not possible to detect any malfunction of the equipment such as the adhesion of the brake lining and the decrease in brake torque. Furthermore, when the conveyor is stopped, the movement of the steps and the handrail due to a decrease in brake torque and the like are not detected, and there is no means for detecting a malfunction of the device.

[0007] In the conventional inspection on the brake sticking in which the lining of the brake of the man conveyor sticks to the disk pad, a maintenance worker inspects each part of the man conveyor, for example, which is stopped and cannot be operated, and checks the brake part. Only when the vehicle was inspected, the sticking of the brake lining could be detected, and the work efficiency of maintenance and inspection was poor. In addition, the brake torque is checked by measuring the stopping distance of the conveyer and checking the brake torque at every predetermined periodical inspection time, and there is no problem with normal use. When the brake torque is suddenly reduced and the passenger gets in despite the stoppage of the conveyor, it is assumed that the steps may start to move due to the weight of the passenger, which may lead to a serious accident.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a first object of the present invention is to provide a man conveyor capable of easily detecting the sticking of a lining of a brake that becomes inoperable. That is. A second object is to obtain a man conveyor that can reliably detect an abnormality of a device that hinders the operation of the man conveyor. A third object is to obtain a man conveyor that can easily detect a decrease in brake torque and can safely operate. A fourth object is to provide a man conveyor that can ensure the safety of passengers even when the vehicle is stopped. A fifth object is to obtain a man conveyor capable of meeting various specifications.

[0009]

SUMMARY OF THE INVENTION A man conveyor according to the present invention detects an endlessly arranged step, an endless handrail running in the same direction as the step, and a moving speed of the handrail. A handrail speed detecting means, a step speed detecting means for detecting a moving speed of the step, and a speed of the step or the handrail detected by the step speed detecting means or the handrail speed detecting means. After a second predetermined time required from the reception of the handrail stop command to the stop is detected, when a value exceeding a predetermined fourth reference speed is detected, it is determined that there is an abnormality, and a signal is transmitted. And a device.

Further, the steps arranged endlessly, an endless handrail running in the same direction as the steps, a handrail speed detecting means for detecting the moving speed of the handrail, and the movement of the steps Step speed detecting means for detecting a speed, and the speed of the step or the handrail detected by the step speed detecting means or the handrail speed detecting means, a stop command of the step and the handrail, a predetermined second And a control device for transmitting a signal when a value exceeding 5 reference speeds is detected.

[0011] Further, an emergency stop means for emergency stop of the step when the control means receives a notification of an abnormality is provided.

[0012] Further, a reset device for restarting after commanding operation stop or emergency stop by the control device is provided in an auto-reset mode for enabling restart by operation of an operation key at the site, or an operation key at the site. The manual reset mode, in which the restart is impossible only by the operation of the above, can be selected.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described. FIG. 1 is a system configuration diagram of a control device of a man conveyor according to the present invention. In the figure,
Reference numeral 16 denotes a tachometer (speed generator), a pulse oscillator and the like, and a step speed detector for detecting the speed of the step 6 is used. 17 similarly uses a tach generator (speed generator) and a pulse oscillator. The handrail speed detecting device 18 detects the speed of the conveyor 2 during the operation or the stop of the conveyor, and determines the result (ON / OF).
F is an operation signal generating means for transmitting an F signal), 19 is a small computer such as a microcomputer which is a control means, 20 is an alarm means such as an auto-announcement to passengers or an alarm buzzer to a management room, and 21 is a stop of a man conveyor. Command relay for
22 is a relay contact.

Here, the small computer 19 is provided with a random access memory (R) used for a working area and data storage.
AM) 191, a clock oscillator 192, a read-only memory (ROM) 193 storing a control program, an arithmetic unit 194 for executing a control program in the ROM 193 in synchronization with the clock oscillator 192 and performing predetermined processing, and this arithmetic unit 194, the output register 19 connected to the alarm means 20 and the command relay 21.
5 is comprised.

Next, the operation of the embodiment of the present invention will be described with reference to a flowchart showing the flow of processing performed by the small computer 19 in FIG. When the man conveyor is stopped, it is determined by the operation signal generating means 18 that the conveyor is stopped, and an OFF signal is input to the small computer 19.
On the other hand, when the operation of the conveyor starts, the signal from the operation signal generator 18 changes from OFF to ON (step S1). When detecting the ON signal from the operation signal generator 18, the calculator 194 proceeds to step S <b> 2, and performs initialization such as clearing of each variable and reading of a program from the ROM 193.

In step S3, when a change in the signal from OFF to ON from the operation signal generating means 18 is detected, time measurement is started based on the clock signal from the clock oscillator 192, and the process proceeds to step S4. I do.

In step S4, the step speed detecting device 16
Based on the speed information input from the handrail speed detecting device 17 to the RAM 191, the detected step speed VS and handrail speed VH are set to the stall detection set speed during normal operation of the step and handrail speed detecting device. As described above, it is determined whether or not the speed has reached the speed V1 (for example, about 30% of the rated speed (30 m / min)) which is the first predetermined reference speed. Here, VS ≧ V1 and VH
If it is determined that ≧ V1, it is determined that the vehicle has been started up normally, and the process proceeds to step S6, where the time measurement performed in step S3 is terminated, and the normal operation state is set.

On the other hand, if it is determined that VS ≦ V1 or VH ≦ V1, the process proceeds to step S5, and the process proceeds to step S3.
Is set in advance, and the time t1 corresponding to the minimum first predetermined time required for the steps and the handrail speed to rise to V1 during normal start-up (for example, , About 1s)
If it is smaller, the process returns to step S4, and the speed determination is performed again. However, when t ≧ t1, the reason for the fact that the speed of the step or the handrail has not reached V1 even though the time t1 has been reached is that the starting resistance is increased due to the sticking of the brake lining or the handrail is increased. Since there is a possibility that a malfunction such as a slip of the drive unit has occurred, the process proceeds to step S8, in which an operation stop output is performed to stop the man conveyor.

If the detected step speed VS has reached the predetermined speed V1 or higher, but the handrail speed VH has not reached the speed V1, a slippage problem has occurred in the handrail drive unit. Can be predicted. on the other hand,
If the detected step speed VS has not reached the predetermined speed V1 or more and the handrail speed VH has reached the speed V1, a failure of the chain connecting the steps can be predicted.

As a result of the operation stop output at step S8, the man conveyor should normally stop. After performing the operation stop output, in step S9,
After counting for a predetermined time (for example, about 0.5 s), the state of the operation signal from the operation signal generation unit 18 is determined in step S10. If the operation signal is OFF, it is determined that the operation has been normally stopped, and the process shifts to step S12 to wait for recovery.

However, if the operation signal remains ON, failure of the operation stop output relay or operation signal generation means 18
Since it is predicted that a failure or the like has occurred, step S
By turning off the emergency stop relay in step 11, the emergency stop of the man conveyor is carried out, and the standby of the trouble which has occurred is checked until the trouble is investigated. At this time, the manager may be notified by a buzzer or the like at the same time as the stop of the conveyor, or the passenger may be notified by an automatic announcement or the like.

According to the present embodiment, the step speed detecting device 1
Step speed information from 6 and handrail speed detector 17
The handrail speed information from the CPU and the driving condition information from the driving signal generating means are sequentially input to the RAM 191 in the small computer 19, and the arithmetic unit 194 executes the control program stored in the ROM 193, and executes the speed input in the RAM 191. Based on the information, the small computer 19 can detect the attachment of the brake lining, etc., which has been conventionally detected by the operator during inspection, at the time of starting operation.
Equipment malfunctions can be detected early, and workability of maintenance and inspection is improved.

Embodiment 2 FIG. In the second embodiment, the operation during the operation of the man conveyor in the normal state (step S
(Operation after time measurement is stopped in 6) will be described. The operation signal is in the ON state while the operation of the man conveyor is started and in the normal operation state. During this time, the arithmetic unit 194 in the small computer 19 enters step S7, and based on the speed information input from the step speed detecting device 16 and the handrail speed detecting device 17 to the RAM 191, the step speed VS and the handrail speed are calculated. The speed VH is a lower limit speed V2 (for example, a rated speed (30 m / mi) which is a predetermined second reference speed.
n) and the upper limit speed V, which is the third reference speed.
3 (for example, about 120% of the rated speed (30 m / min)).

Here, V3 ≧ VS ≧ V2 and V3 ≧ V
If H ≧ V2, it is determined that there is no abnormality, and the determination in step 7 is repeated. However, if the step speed VS becomes equal to or lower than V2, the drive motor power cannot be transmitted due to the break of the step drive chain, the slip or break of the drive belt of the drive motor, the torque loss of the drive motor due to overload (excessive passengers), There is a possibility that a trouble such as a trouble of the drive motor may occur. On the other hand, if the step speed VS becomes V3 or more, overload during the descending operation and acceleration of the step due to loss of torque of the drive motor are considered. Then, the processing after step S8 described above is performed.

If the handrail speed VH is equal to or lower than V2, there is a possibility that troubles such as failure of the speed detecting device, slippage between the handrail and the driving roller, trouble of the handrail driving device, etc. may occur. The process shifts to S8, and performs the above-described processing after step S8.

In step S7, VH / VS, which is a ratio between the handrail speed VH and the step speed VS, is calculated, and the value is within a certain range (for example, 0.25 ≦ VH /
VS ≦ 1.2), and the same determination as described above may be performed depending on whether the value is within a certain range.
VH, which is the ratio of the handrail speed VH to the step speed VS
By determining / VS, the unsynchronization between the movement of the handrail and the steps can be accurately detected, so that the safety of the man conveyor can be ensured and the malfunction of the control device can be reduced.

According to the present embodiment, the step speed detecting device 1
Step speed information from 6 and handrail speed detector 17
The handrail speed information from the
AM 191 is sequentially input to the arithmetic unit 194 and the ROM 1
Executing the control program stored in the
Based on the speed information input in 1, the drive motor power cannot be transmitted due to breakage of the step drive chain, slip or breakage of the drive belt of the drive motor, loss of drive motor torque due to overload (excessive passengers), Detect faults such as drive motor trouble, overload during descent operation, acceleration of steps due to loss of drive motor torque, failure of speed detection device, slip between handrail and drive roller, trouble of handrail drive device, etc. The workability of maintenance and inspection is improved, and the safety of the man conveyor can be ensured.

Embodiment 3 Next, the operation of the embodiment of the present invention will be described with reference to a flowchart showing a flow of processing performed by the small computer 19 in FIG. When the man conveyor is in a normal operation state, it is determined that the operation is in operation by the operation signal generating means 18, and an ON signal is input to the small computer 19. On the other hand, when the operation of the conveyor is stopped, the signal from the operation signal generation means 18 changes from ON to OF.
F (step S13). When the operation unit 194 detects the OFF signal from the operation signal generation unit 18, the process proceeds to step S 14, and starts time measurement based on the clock signal from the clock oscillator 192.
Move to 15.

In step S15, the step speed detecting device 1
6 and handrail speed detector 17 to RAM 191
The detected step speed VS and the handrail speed VH are based on the speed information input to the speed V4 (for example, a value close to 0), which is a preset fourth reference speed.
It is determined whether or not: Here, if it is determined that VS ≦ V4 and VH ≦ V4, it is determined that the operation has been stopped normally, and the process proceeds to step S16, where the time measurement performed in step S14 is completed, and the device enters a stopped state.

On the other hand, if it is determined that VS ≧ V4 or VH ≧ V4, the process shifts to step S18, and the process proceeds to step S1.
4 is a second predetermined time set to be equal to or longer than the time required to reach the stop state at the time of a normal stop, which is set in advance in the ROM 193, and which is the elapsed time t after the operation signal measured in step 4 is turned off. t2 (for example, about 2s)
If it is smaller, the process returns to step S15, and the speed determination is performed again. However, when t ≧ t2,
Although the time t2 has been reached, the predetermined speed (0
If the emergency stop relay does not fall below the value, it is considered that a malfunction such as a decrease in brake torque may have occurred.
By performing F, the power supply to the drive motor and the electromagnetic brake is cut off, and the conveyer is emergency-stopped by emergency stop means, for example, a newly provided auxiliary brake. Then, it waits until the investigation and the handling of the trouble that has occurred are performed. At this time, the administrator may be notified by a buzzer or the like at the same time as the stop of the conveyor, or the passenger may be notified by an automatic announcement or the like.

According to the present embodiment, the step speed detecting device 1
Step speed information from 6 and handrail speed detector 17
The handrail speed information from the CPU and the driving condition information from the driving signal generating means are sequentially input to the RAM 191 in the small computer 19, and the arithmetic unit 194 executes the control program stored in the ROM 193, and executes the speed input in the RAM 191. Based on the information, the danger of a decrease in the brake torque, which was conventionally detected by the operator during the inspection, can be detected by the small computer 19 at the time of daily operation stop, and the decrease in the brake torque can be detected early. It is also possible to discover, and the workability of maintenance and inspection is improved. Further, the emergency stop of the conveyor is immediately performed when a decrease in brake torque is detected, so that passenger safety is further improved.

Embodiment 4 FIG. In the fourth embodiment, the operation during the stop operation of the conveyor in the stop state (Step S
(Operation after time measurement is stopped at 16) will be described. While the operation of the man conveyor is stopped and the operation is stopped, the operation signal is in the OFF state. In this state, normally, both the step speed VS and the handrail speed VH should be 0. During this time, the operation unit 194 in the small computer 19 enters step S17, and based on the speed information input from the step speed detector 16 and the handrail speed detector 17 to the RAM 191, the step speed VS and the handrail speed are calculated. A speed V5 (for example, a speed VH that is a fifth reference speed set in advance)
(Value close to 0) or less.

Here, if V5 ≧ VS and V5 ≧ VH, it is determined that there is no abnormality, and the determination in step 17 is repeated. However, when the step speed VS becomes V5 or more,
For example, a passenger rides on the conveyer despite the stop state, and it is determined that the conveyer is starting to move due to the load of the passenger. Therefore, the process proceeds to step S11, and the emergency stop relay is turned off. Then, the power supply to the drive motor and the electromagnetic brake is cut off, and the man conveyor is stopped by an emergency stop means such as a newly provided auxiliary brake. Then, it waits until the investigation and the handling of the trouble that has occurred are performed. At this time, the administrator may be notified by a buzzer or the like at the same time as the stop of the conveyor, or the passenger may be notified by an automatic announcement or the like.

According to the present embodiment, the step speed detecting device 1
Step speed information from 6 and handrail speed detector 17
The handrail speed information from the
AM 191 is sequentially input to the arithmetic unit 194 and the ROM 1
Executing the control program stored in the
Based on the speed information input in 1, the small computer 19 can detect the fear of a decrease in brake torque, etc., which has been conventionally detected by the operator during inspection, while the operation is stopped, The workability of maintenance and inspection is improved. In addition, since the status of the stopped conveyor is constantly monitored,
It is safe even if a passenger accidentally gets on the conveyor.

Embodiment 5 FIG. According to the above-described embodiment, it is possible to stop the man conveyor for the trouble of the generated device or the like, to enable passenger safety and to quickly detect the trouble of the device, but in the present embodiment, the man conveyor after the emergency stop is performed. Will be described.

The control system of the man-conveyor detects a malfunction, stops the man-conveyor, and then resumes operation by operating the man-conveyor operation key at the site, which hinders normal operation. In the case of a malfunction that automatically returns after a while, such as slippage of the handrail due to moisture etc., there is no need for a short time to return, and there is no need to hinder traffic. Auto-reset mode that allows the conveyor owner to restart, and the operation of the man-conveyor operation key at the site after stopping the man-conveyor after detecting a problem such as a decrease in motor torque or breakage of the V-belt It is a mechanism that makes it impossible to return to operation, and if there is a problem that seriously hinders the operation of the conveyor, easy operation return And manual reset mode to disable the only restart after the treatment of the maintenance company which has the effect of preventing large of a disaster to happen, to be able to choose from two types of. By doing so, it becomes possible to flexibly cope with differences in specifications.

[0037]

Since the present invention is configured as described above, it has the following effects. Steps arranged endlessly, endless handrails running in the same direction as the steps, handrail speed detecting means for detecting the moving speed of the handrails, steps for detecting the moving speed of the steps A speed detecting means, and a second speed necessary for the speed of the step or the handrail detected by the step speed detecting means or the handrail speed detecting means to stop after receiving the stop command of the step and the handrail. When a value exceeding a predetermined fourth reference speed is detected after a lapse of a predetermined time, it is determined that there is an abnormality, and a control device for transmitting a signal is provided, so that a decrease in brake torque can be easily detected. This improves the efficiency of the inspection work of the brake torque.

Also, the steps arranged endlessly, an endless handrail running in the same direction as the steps, handrail speed detecting means for detecting the moving speed of the handrail, and the movement of the steps Step speed detecting means for detecting a speed, and the speed of the step or the handrail detected by the step speed detecting means or the handrail speed detecting means, a stop command of the step and the handrail, a predetermined second 5 When a value exceeding the reference speed is detected, it is determined that an abnormality has occurred, and a control device that transmits a signal is provided.
The danger can be notified directly and passenger safety can be improved.

Further, the emergency stop means for emergency stop of the step when an abnormality is notified by the control means is provided, so that the man conveyor with reduced brake torque is stopped by the emergency stop means, and the safety of passengers is reduced. Better.

Further, a reset device for restarting after instructing operation stop or emergency stop by the control device is provided in an auto reset mode for enabling restart by operation of an operation key at the site, or an operation key at the site. Since the manual reset mode, in which restarting is not possible only by the above operation, can be selected, it is possible to cope with various required specifications.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a configuration of a control device of a man conveyor according to the present invention.

FIG. 2 is a flowchart illustrating an operation of a control device according to the present invention.

FIG. 3 is a flowchart showing the operation of the control device according to the present invention.

FIG. 4 is a diagram showing a structure of a man conveyor.

FIG. 5 is an enlarged view of a speed detecting unit of a step and a handrail.

[Explanation of symbols]

1 step band, 2 handrails, 6 steps, 8 driving machine, 16 step speed detecting means, 17 handrail speed detecting means, 18 operation signal generating means, 19 small computer.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasumasa Harita 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (56) References JP-A-4-85289 (JP, A) JP-A-1 -75393 (JP, A) JP-A-55-21318 (JP, A) JP 7-11096 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66B 21/00- 31/02

Claims (4)

(57) [Claims] 1. An endlessly arranged step, an endless handrail running in the same direction as the step, a handrail speed detecting means for detecting a moving speed of the handrail, and a movement of the step Step speed detecting means for detecting the speed, and the speed of the step or handrail detected by the step speed detecting means or the handrail speed detecting means is stopped after receiving the stop command of the step and handrail. A conveyer which, when a value exceeding a predetermined fourth reference speed is detected after a lapse of a second predetermined time necessary for the control, judges that the value is abnormal and transmits a signal. 2. An endlessly arranged step, an endless handrail running in the same direction as the step, a handrail speed detecting means for detecting a moving speed of the handrail, and a movement of the step Step speed detecting means for detecting a speed; and the speed of the step or the handrail detected by the step speed detecting means or the handrail speed detecting means is a predetermined step number during the stop command of the step and the handrail. And a control unit for transmitting a signal when a value exceeding 5 reference speeds is detected. 3. The man conveyor according to claim 1, further comprising an emergency stop means for emergency stopping the step when the control means receives a notification of an abnormality. 4. An auto-reset mode in which a reset device for restarting after instructing an operation stop or an emergency stop by a control device can be restarted by operating an on-site operation key, or an on-site operation key Manual reset mode, which makes restart impossible with only the operation of
The man conveyor according to any one of claims 1 to 3, wherein any one of the man conveyors can be selected.