JP6032297B2 - Escalator - Google Patents

Description

  The present invention relates to an escalator.

  Patent Document 1 discloses an escalator including a step driving motor and a handrail driving motor. In the escalator described in Patent Document 1, when the safety device is operated during the descending operation, each electric motor is controlled so that the stop position of the step is ahead of the stop position of the moving handrail.

JP 2012-17200 A

  In the case of an emergency stop at the time of descending operation, it is more effective to prevent the passenger from falling or the like when the moving handrail is stopped first than the step as in the escalator described in Patent Document 1. However, in the escalator described in Patent Document 1, it is necessary to provide both a step driving motor and a handrail driving motor, which causes a problem in that the structure is complicated. In addition, since two electric motors are provided, there is a problem that it is difficult to synchronize the moving handrail with the step during normal operation.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide an escalator capable of stopping a moving handrail before a step with a simple configuration when an emergency stop is performed during downhill driving.

  An escalator according to the present invention includes a driving motor that generates a driving force for driving a step and a moving handrail, a detecting unit that detects that a safety device for stopping the driving motor is operated, and a moving handrail. A handrail lock device for stopping, and a control means for stopping the moving handrail by the handrail lock device before the step is stopped when the detection means detects that the safety device has been operated during the descending operation. .

  With the escalator according to the present invention, the moving handrail can be stopped prior to the step with a simple configuration in the case of an emergency stop during downhill driving.

It is sectional drawing which shows the escalator in Embodiment 1 of this invention. It is a block diagram which shows the structure of the escalator in Embodiment 1 of this invention. It is a figure for demonstrating the function of a handrail locking device. It is a figure which shows the AA cross section of FIG. It is a figure for demonstrating the function of a handrail locking device. It is a figure which shows the BB cross section of FIG. It is a flowchart which shows operation | movement of the escalator in Embodiment 1 of this invention.

  The present invention will be described with reference to the accompanying drawings. The overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
1 is a cross-sectional view showing an escalator according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing the configuration of the escalator in the first embodiment of the present invention.

  The escalator truss 1 is stretched between the upper and lower floors of the building. The truss 1 supports the weight of the escalator and the load. Escalator passengers take step 2 as they move between the upper and lower floors. Step 2 is coupled to the step chain 3. The step chain 3 is formed in an endless shape. By connecting a large number of steps 2 to the step chain 3, the steps 2 are arranged without gaps from the upper entrance 4 to the lower entrance 5.

  A machine room 6 is provided below the entrance 4. The machine room 6 is a space formed at the upper end of the truss 1. The machine room 6 is provided with, for example, a drive motor 7, a speed reducer 8, and a control device 9. Sprockets 10 and 11 are provided on a shaft provided in the machine room 6.

  The drive motor 7 generates a drive force for driving step 2. The speed reducer 8 decelerates the output of the drive motor 7 and rotates the shaft provided with the sprockets 10 and 11 via the chain. The step chain 3 is wound around a sprocket 10 for step driving. As the sprocket 10 rotates with the shaft, the step 2 moves between the entrance / exit 4 and the entrance / exit 5.

  The control device 9 controls various operations. For example, the control device 9 controls normal operation and operation during an emergency stop. The normal operation includes a down operation for moving the passenger from the entrance / exit 4 to the entrance 5 and an up operation for moving the passenger from the entrance 5 to the entrance 4. The drive motor 7 is electrically connected to the control device 9. Control of the drive motor 7 is performed by the control device 9.

  The moving handrail 12 is gripped for safety by passengers getting on and off the step 2 and passengers on the step 2. The moving handrail 12 is formed in an endless shape. A balustrade 13 is provided on both sides of step 2. The moving handrail 12 is arranged so that the upper side is along the edge of the balustrade 13. The moving handrail 12 is turned upside down at the entrance 4 and the entrance 5. The lower side of the moving handrail 12 is arranged in a skirt guard provided on both sides of the step 2.

  The moving handrail 12 is driven by a handrail driving device 14. The handrail drive device 14 drives the moving handrail 12 by, for example, a friction drive method. The handrail drive device 14 that employs the friction drive system includes, for example, a drive roller 15 and a pressure roller 16 (see FIG. 3). The movable handrail 12 is sandwiched from above and below (front and back) by the drive roller 15 and the pressure roller 16. The handrail driving device 14 drives the moving handrail 12 using the frictional force with the moving handrail 12 by rotating the driving roller 15 with the moving handrail 12 being sandwiched.

  A handrail chain 17 is wound around the sprocket 11 for driving the handrail. The rotational force of the sprocket 11 is transmitted to the handrail drive device 14 by the handrail chain 17. As the sprocket 11 rotates together with the shaft and the sprocket 10, the moving handrail 12 is driven by the handrail driving device 14. That is, the drive motor 7 also generates a driving force for driving the moving handrail 12. While the normal operation is performed, the moving handrail 12 circulates between the upper and lower floors so as to synchronize with Step 2 on the forward path side.

  The safety device 18 operates when it detects a state that requires the drive motor 7 to be stopped. The safety device 18 is electrically connected to the control device 9. When the safety device 18 operates, information to that effect is output from the safety device 18 to the control device 9.

  The handrail lock device 19 is a device for stopping the handrail 12 with the moving handrail 12 interposed therebetween. The handrail lock device 19 is provided separately from the handrail drive device 14 that moves and stops the moving handrail 12. The handrail lock device 19 is electrically connected to the control device 9. The control of the handrail lock device 19 is performed by the control device 9.

  3 and 5 are diagrams for explaining the function of the handrail lock device 19. FIG. 3 shows a state when normal operation is performed. FIG. 4 is a view showing a cross section taken along the line AA of FIG. The handrail lock device 19 includes, for example, an upper member 19a and a lower member 19b. During normal operation, a gap is formed between the upper member 19a and the lower member 19b. The moving handrail 12 passes through a gap formed between the upper member 19a and the lower member 19b. During the normal operation, the moving handrail 12 does not contact either the upper member 19a or the lower member 19b.

  FIG. 5 shows a state when the handrail lock device 19 is operated. FIG. 6 is a view showing a BB cross section of FIG. When the handrail locking device 19 is operated, the movable handrail 12 is sandwiched from above and below (front and back) by the upper member 19a and the lower member 19b. The handrail locking device 19 includes, for example, a pressing member that presses the upper member 19a against the moving handrail 12 side and a pressing member (both not shown) that presses the lower member 19b against the moving handrail 12 side. The pressing member may be a spring, for example. When the handrail locking device 19 is operated, the moving handrail 12 cannot be moved even if the handrail driving device 14 is operated.

  The handrail monitoring device 20 monitors the state of the moving handrail 12. For example, the handrail monitoring device 20 monitors the moving speed of the moving handrail 12. If the moving speed of the moving handrail 12 is 0, the handrail monitoring device 20 detects that the moving handrail 12 is stopped. The handrail monitoring device 20 is electrically connected to the control device 9. When the handrail monitoring device 20 detects that the moving handrail 12 is stopped, information to that effect is output from the handrail monitoring device 20 to the control device 9. The method for detecting that the moving handrail 12 is stopped may be another method.

  As illustrated in FIG. 2, the control device 9 includes, for example, a determination unit 21, a detection unit 22, and a control unit 23. The determination part 21 determines the driving direction of the escalator. Any method may be used for the determination unit 21 to determine the driving direction. The detection unit 22 detects that the safety device 18 has been operated. The detection part 22 performs the said detection based on the information input from the safety device 18, for example. The control unit 23 controls equipment connected to the control device 9.

  Next, the operation of the escalator having the above configuration will be described with reference to FIG. FIG. 7 is a flowchart showing the operation of the escalator in the first embodiment of the present invention.

  The control device 9 determines whether or not the safety device 18 has been operated (S1). For example, when an event that requires the drive motor 7 to be urgently stopped during normal operation occurs, the safety device 18 operates. Thereby, it is detected by the detection part 22 that the safety device 18 operated (Yes of S1).

  Next, the control device 9 determines whether or not the descending operation is performed (S2). When it is determined by the determination unit 21 that the descending operation is being performed (Yes in S2), the control unit 23 operates the handrail lock device 19 (S3). That is, the control unit 23 operates the handrail lock device 19 immediately after the detection unit 22 detects that the safety device 18 has been operated while the descending operation is being performed.

  When the detection unit 22 detects that the safety device 18 has been operated, the control unit 23 outputs a command for stopping the drive motor 7. Even if a command for stopping the drive motor 7 is output, the step 2 continues to move for a short time due to the inertial force. When a command for stopping the drive motor 7 is output, step 2 does not stop instantaneously. For this reason, if the handrail locking device 19 operates in S3, the moving handrail 12 stops before Step 2 stops. In other words, when the safety device 18 is operated while the descending operation is performed, the step 2 is stopped after the moving handrail 12 is stopped. As a result, the passenger holding the moving handrail 12 tilts the upper body toward the upper entrance 4. It is possible to prevent the passenger on the step 2 from falling over to the entrance / exit 5 and colliding with other passengers ahead.

  When the determination unit 21 determines that the uphill driving is performed in S2, the control device 9 determines whether or not the moving handrail 12 is stopped (S4). As described above, when the detection unit 22 detects that the safety device 18 has been operated, the control unit 23 outputs a command for stopping the drive motor 7. Thereby, the step 2 and the moving handrail 12 are stopped by the function of the drive motor 7. The fact that the moving handrail 12 is stopped is detected by the handrail monitoring device 20. When information indicating that the moving handrail 12 is stopped is input from the handrail monitoring device 20, the control unit 23 operates the handrail lock device 19 (S3). That is, the control unit 23 causes the handrail lock device 19 to sandwich the moving handrail 12 after the handrail monitoring device 20 detects that the moving handrail 12 is stopped.

  If the traveling handrail 12 stops before the step 2 stops when the ascending operation is performed, the upper body of the passenger holding the traveling handrail 12 is inclined toward the lower entrance / exit 5. For this reason, when the ascending operation is performed, it is preferable to operate the handrail lock device 19 after the step 2 and the moving handrail 12 are stopped by the function of the drive motor 7. By adopting such a configuration, for example, when an accident occurs in which Step 2 is lowered due to the weight of the passenger after the moving handrail 12 stops, the moving handrail 12 moves together with Step 2. Can be prevented. The passenger can handle the fixed moving handrail 12 by gripping it.

  In addition, when the ascending operation is performed, when the detection unit 22 detects that the safety device 18 has been operated, the control unit 23 detects that the handrail lock device has passed after a certain period of time has elapsed since the safety device 18 has been operated. The moving handrail 12 may be sandwiched by 19. The predetermined time is set to a time longer than the time necessary for the step 2 and the moving handrail 12 to stop by the function of the drive motor 7 after the safety device 18 operates, for example. If such a configuration is adopted, the same effect as described above can be obtained even if the handrail monitoring device 20 is not provided.

  In the present embodiment, each unit indicated by reference numerals 21 to 23 represents a function of the control device 9. The control device 9 includes a circuit including, for example, an input / output interface, a CPU, and a memory as hardware resources. The control apparatus 9 implement | achieves each function which each part 21-23 has by performing the program memorize | stored in memory by CPU. You may implement | achieve part or all of the function which each part 21-23 has with hardware.

  In the present embodiment, the case where the handrail locking device 19 is operated in both the descending operation and the ascending operation has been described. This is an example. The handrail lock device 19 may be operated only when the descending operation is performed. Moreover, if it is an escalator which performs only a descending driving | operation, it is not necessary to provide the determination part 21 in the control apparatus 9. In such a case, the control device 9 does not perform the processes of S2 and S4 in FIG. Since the descending operation is always performed, the control unit 23 operates the handrail lock device 19 immediately after the detection unit 22 detects that the safety device 18 has been operated.

  1 truss, 2 steps, 3 step chain, 4 boarding gate, 5 boarding gate, 6 machine room, 7 drive motor, 8 speed reducer, 9 control device, 10 sprocket, 11 sprocket, 12 moving handrail, 13 balustrade, 14 handrail drive Device, 15 driving roller, 16 pressure roller, 17 handrail chain, 18 safety device, 19 handrail lock device, 19a upper member, 19b lower member, 20 handrail monitoring device, 21 determination unit, 22 detection unit, 23 control unit

Claims (4)

A driving motor for generating a driving force for driving the step and the moving handrail; and
Detecting means for detecting that a safety device for stopping the drive motor has been operated;
A handrail lock device for stopping by sandwiching the moving handrail;
Control means for stopping the moving handrail by the handrail lock device before the step is stopped when the detection means detects that the safety device has been operated when the down operation is being performed;
An escalator with Determining means for determining the driving direction;
Further comprising
When the determination means determines that the descending operation is being performed and the detection means detects that the safety device has been operated, the control means determines that the handrail lock device before the step is stopped. The escalator according to claim 1, wherein the moving handrail is stopped. A handrail monitoring device for detecting that the moving handrail is stopped;
Further comprising
The control means determines that the moving handrail is stopped when the determination means determines that the ascending operation is being performed and the detection means detects that the safety device has been operated. The escalator according to claim 2, wherein the moving handrail is sandwiched between the handrail lock devices after being detected by a monitoring device.   When the determination means determines that the ascending operation is being performed and the detection means detects that the safety device has been operated, a predetermined time has elapsed since the safety device was operated. The escalator according to claim 2, wherein the movable handrail is sandwiched between the handrail lock devices after the operation.

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