JP2014234279A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a passenger conveyor in which breakage of footsteps etc. accompanied with footstep running can be prevented by detecting floating-up of the footsteps and stopping a passenger conveyor in a case that the footsteps are floated up.SOLUTION: An escalator 1 of the present invention comprises: a pair of footstep chains 9 which are wound over an upper floor side drive sprocket and a lower floor side drive sprocket; plural footsteps 4 which are connected to the pair of footstep chains 9; drive rollers 16 which are provided at both end parts of a footstep shaft 15 as rotatable; driven rollers 17 which are provided at both sides of each of the footsteps 4 as rotatable; drive rails 10 which guide the drive rollers 16 and driven rails 11 which guide the driven rollers 17; and a footstep floating-up detection device 20 which detects floating-up of the footsteps 4 due to separation of the driven rollers 17 from the driven rails 11 and stops operation pf the escalator 1.

Description

  The present invention relates to a passenger conveyor in which steps run in a truss by driving rollers and follower rollers rolling along the drive rail and follower rail, respectively.

Each escalator step is connected by a step chain. The distance between the front and rear steps is kept at an appropriate distance, and usually the two are not in contact with each other.
Here, when the escalator is in the ascending operation, if foreign matter such as coins or dust gets caught between the steps, or if the drive roller or tracking roller is misaligned due to wear of the step chain, the return side step It is assumed that the cleats and cleat risers of the treads do not normally mesh with each other, the steps collide or come into contact with each other, and the trajectory of the driving roller and the following roller deviates from the normal line and rises upward.

  For this, by providing a lifting restricting body that restricts the displacement of the follower roller in the direction away from the traveling surface of the return side follower rail between the return side follower rail and the intermediate horizontal connecting part, There is known an escalator step-up prevention device that can maintain the running of a step by preventing a collision between the follower roller and the intermediate horizontal connecting member when the step swings up and down on the side (for example, , See Patent Document 1).

JP 2008-156018 A

  However, this device is only a device for restricting the vertical movement of the follower roller, and when the step is lifted, it travels with the step lifted, for example, a part of the step is driven rail There is a problem that it can collide with a truss and break.

  It is an object of the present invention to solve such a problem, and when a step is lifted, detecting the fact and stopping the passenger conveyor, the step accompanying the traveling of the lifted step, etc. An object of the present invention is to obtain a passenger conveyor that can prevent damage to the vehicle.

The passenger conveyor according to this invention is
A first drive sprocket and a second drive sprocket provided in the truss;
A pair of step chains wound around the first drive sprocket and the second drive sprocket;
A plurality of steps connected to the pair of step chains via a drive shaft;
A drive roller rotatably provided at both ends of the drive shaft;
A follower roller rotatably provided on both sides of the step via a follower shaft;
A drive rail that is provided between the first drive sprocket and the second drive sprocket and guides the drive roller; and a follow rail that guides the follow roller;
A step lift detection device that is provided in the truss and detects the lift of the step and stops the operation of the passenger conveyor.

  In the passenger conveyor according to the present invention, since the lift of the step is detected and the operation is stopped by the step lift detection device, it is possible to prevent the step and the like from being damaged due to the travel of the lifted step.

It is a sectional side view which shows the escalator of Embodiment 1 of this invention. It is a sectional side view which shows the edge part of the upper floor side of the truss of FIG. It is principal part sectional drawing when an escalator is seen from the arrow a of FIG. FIG. 4 is a side view showing the step lift detection device of FIG. 3. It is a side view which shows the usage condition of the step lift detection apparatus of FIG. FIG. 4 is a block diagram illustrating an operation of the escalator when the detection sensor of FIG. 3 is in an “ON” state.

Embodiment 1 FIG.
FIG. 1 is a side view showing an escalator 1 according to Embodiment 1 of the present invention.
In the figure, a truss 2 is installed across the upper and lower stairs in the installation space of the escalator 1 which is a passenger conveyor. A pair of balustrades 3 is erected on the upper surface of the truss 2. A step 4 is provided between the pair of balustrades 3 so as to be able to travel.
The upper floor side which is a first drive sprocket connected to the motor 5 via a drive chain 6 and a motor 5 that generates a driving force for running the steps 4 is disposed at the upper floor side end of the truss 2. A drive sprocket 7 is provided. A pair of upper floor drive sprockets 7 are provided on both sides of the step 4.
At the end of the truss 2 on the lower floor side, a lower floor drive sprocket 8 that is a pair of second drive sprockets is provided on both sides of the step 4.
A step chain 9 connected to each step 4 is wound around each lower floor side drive sprocket 8 and each upper floor side drive sprocket 7.

2 is a side cross-sectional view showing the main part of the upper floor side end of the truss 2 of FIG. 1, and FIG. 3 is a main part cross-sectional view of the escalator 1 when viewed from the arrow A of FIG.
In the truss 2, a pair of drive rails 10 disposed on both sides of the step 4 and a pair of follower rails 11 disposed on the inner side of the drive rail 10 are provided between the lower floor side drive sprocket 8 and the upper floor side drive sprocket 7. It is provided to connect.

The step 4 includes a tread plate 12, a riser 13, and a bracket 14.
Each step 4 is attached to a pair of step chains 9 at equal intervals. A step shaft 15 is fixed to the upper floor side end of the bracket 14 on the forward path side (upper side). A step chain 9 passes through both ends of the step shaft 15, and drive rollers 16 that roll on the drive rail 10 are rotatably attached to both ends.
A follower roller 17 that rolls on the follower rail 11 is rotatably attached to both ends of the lower floor side of the bracket 14 on the forward path side via a follower shaft 18.

Further, in the truss 2, there is provided a step lift detection device 20 (hereinafter abbreviated as a detection device) that detects the lift of the step 4 during traveling.
The detection device 20 is a bent portion of the step chain 9 on the upper floor side of the truss 2 (between the inclined portion of the step chain 9 and the horizontal portion of the step chain 9), and the forward path side and the return path of the step 4 It is arranged almost in the middle with the side (lower side).

FIG. 4 is a side view showing the detection device 20.
The detection device 20 includes a mounting plate 21 attached to the truss 2 via a fixing bracket (not shown), a shaft 22 erected so as to be rotatable with respect to the mounting plate 21, and the shaft 22. A rotating plate 23 having an inclined portion 19 inclined at an intermediate portion, a disc 24 provided on a mounting plate 21 on a diagonal line with a shaft 22, and a button portion on an outer peripheral surface of the disc 24. 27a, and a detection sensor 27 attached to the attachment plate 21.
The rotating plate 23 is integral with the shaft 22, and both sides of the inclined portion 19 have horizontal portions 38 extending in parallel with each other. The horizontal portion 38 comes into contact with the follow-up roller 17 that has floated on the return path side.
The circular plate 24 has a locking groove 25 formed on the outer peripheral surface thereof, where the tip of the rotating plate 23 is locked. Further, a detection groove 26 into which a retractable button portion 27a urged in the protruding direction is inserted is formed at a portion facing the locking groove 25.

In the escalator 1 configured as described above, when the motor 5 is driven, the driving force is transmitted to the upper floor side drive sprocket 7 via the drive chain 6, and the step chain 9 is interlocked with the rotation of the upper floor side drive sprocket 7. Run.
The step 4 connected to the pair of step chains 9 via the step shaft 15 travels while the drive roller 16 rolls on the drive rail 10 and the follower roller 17 rolls on the follower rail 11. To do.
At that time, the step 4 is guided by the drive rail 10 and the follower rail 11 and travels while the tread 12 is kept horizontal on the forward path side, and each tread 12 is inclined at the intermediate portion of the truss 2 on the return path (lower side). Drive while keeping a straight line.

Then, when a certain step 4 is lifted for some reason while the step 4 is running, and the follower roller 17 integral with the step 4 is lifted from the follower rail 11, the follower roller 17 moves in a lifted state and is detected. Device 20 is reached.
When the follower roller 17 that has been lifted reaches the detection device 20, the follower roller 17 comes into contact with one end of the rotating plate 23, and the rotating plate 23 rotates the seesaw about the shaft 22. .
As a result, the disc 24 rotates in the clockwise direction by the rotational force applied from the other end of the rotating plate 23 locked in the locking groove 25.
Normally, the button portion 27a of the detection sensor 27 protrudes and is received in the detection groove 26 of the disk 24, and the detection sensor 27 is “OFF”.

However, due to the clockwise rotation of the disc 24, the button portion 27a is pushed out of the detection groove 26, and then comes into contact with the outer peripheral curved surface around the detection groove 26 of the disc 24, so that the detection sensor 27 " ON ".
As a result, the operation of the escalator 1 is automatically stopped.
Thereafter, even if the escalator 1 is to be restarted, the button portion 27a is immersed and presses the outer peripheral curved surface of the disk 24, the disk 24 does not rotate, and the escalator 1 continues to be in an abnormal state. It cannot be restarted because it is judged.

FIG. 6 is a block diagram showing the operation of the escalator when the detection sensor 27 is in the “ON” state.
When the lifting of the step 4 during the operation of the escalator occurs, the detection sensor 27 outputs a signal from the detection sensor 27 to the escalator operation management means 28. The escalator operation management means 28 receives the signal and determines that the escalator is in an abnormal state.

Next, the following commands are issued from the escalator operation management means 28 to each means.
First, a command is issued to the motor stop means 29 (for example, an electromagnetic brake or a gentle stop by an inverter) to stop the motor 30 that rotationally drives the upper floor drive sprocket 7.
In addition, a command is issued to the voice announcement issuing means 31 and the speaker 32 issues a voice notification that the escalator is in an abnormal state.
Further, a command is issued to the photoelectric device operating means 33, and an abnormal state is visually displayed on the photoelectric device 34 which is an indicator lamp and a failure indicator.
In addition, a command is issued to the escalator monitoring means 35, and the monitoring panel 36 informs the escalator manager that there is an abnormal condition.
In addition, a command is issued to the error recording means 37, and an abnormal state is left as a history.
In order to restart the escalator 1, a maintenance worker needs to enter the truss 2, rotate the disk 24, and insert the button portion 27 a into the detection groove 26. Will not be restartable. The escalator 1 cannot be restarted until it is confirmed by the command from the escalator operation management means 28 that there is no abnormality in the escalator 1 to the last.

  According to the escalator 1 according to this embodiment, the detection device 20 detects the lifting of the step 4 due to the separation of the tracking roller 17 from the tracking rail 11, and the operation of the escalator 1 is stopped. It is possible to prevent damage to the step 4 and the like accompanying traveling.

The detection device 20 includes a mounting plate 21 fixed to the truss 2 via a bracket 14, a rotating plate 23 provided on the mounting plate 21 so as to be rotatable about an intermediate shaft 22, and a mounting plate 21. A disc 24 rotatably provided on the plate 21, and a detection sensor 27 that detects the rotational displacement of the disc 24 and stops the operation of the escalator 1. The other end of the rotating plate 23 is rotationally displaced in conjunction with the release of the locking from the locking groove 25 at the one end of the rotating plate 23, which occurs when the other end abuts the follower roller 17.
Therefore, with the simple configuration, the lifting of the step 4 is detected and the operation of the escalator 1 is stopped.

Further, the detection sensor 27 has a retractable button portion 27 a urged in the protruding direction at the tip portion, and this button portion 27 a is inserted into a detection groove 26 formed on the outer peripheral surface of the disc 24. At the same time, when the disc 24 is rotationally displaced, the disc 24 is pushed out of the detection groove 26, presses the outer peripheral curved surface around the detection groove 26 of the disc 24, and the disc 24 is held.
Therefore, after the lift of the step 4 is detected, the disc 24 is not rotationally displaced, and the operation stop state is continuously secured even after the operation of the escalator 1 is stopped, and the step 4 is lifted. The operation of the escalator 1 can be prevented more reliably.

Further, the rotating plate 23 has an inclined portion 19 whose intermediate portion to which the shaft 22 is attached is inclined, and both sides of the inclined portion 19 have horizontal portions 38 extending in parallel with each other. The raised step 4 can be detected regardless of the distance from the shaft 22.
Further, by extending the length of the horizontal portion 38, the detection range of the lifting of the step 4 can be expanded.

  In addition, since the shaft 22 and the rotating plate 23 have an integral structure, the lifting of the step 4 can be detected with a small number of parts.

The detection device 20 is a bent portion between the inclined portion of the step chain 9 and the horizontal portion on the upper floor side of the truss 2 and is arranged in the middle between the forward side and the return side of the step 4. ing. Therefore, most of the lifting of the step 4 occurs at a bent portion of the step chain 9. By arranging the detection device 20 at this portion, the step 4 that has been lifted can be detected quickly.
Further, since the horizontal portion 38 of the rotating plate 23 comes into contact with the follow-up roller 17 that has been lifted on the return path side, it is possible to prevent the tread plate 12 of the step 4 that has been lifted from appearing on the forward path side. Can do.

  Further, when the detection sensor 27 detects the lifting of the step 4, the detection sensor 27 transmits a detection signal to the escalator operation management means 28 that manages the abnormality of the escalator 1. As a result, the drive of the motor 5 is immediately stopped and the escalator 1 Operation is reliably stopped.

In addition, although the said embodiment demonstrated the escalator 1 as a passenger conveyor, this invention is applicable also to a moving walkway.
Further, the lift of the step 4 is detected by contacting the rotating plate 23 with the follower roller 17, but the lift of the step 4 is detected by contacting the rotating plate 23 with any one of the driving roller 16, the riser 13, and the bracket 14. You may make it do.
Further, the detection sensor 27 detects the rotational displacement of the disk 24 with the button portion 27a coming into contact with the outer peripheral surface of the disk 24. However, this example is an example. It may be a magnetic sensor or an optical sensor that detects the rotational displacement of the plate 24.

  1 escalator (passenger conveyor), 2 trusses, balustrade, 4 steps, 5 motor, 6 drive chain, 7 upper floor drive sprocket (first drive sprocket), 8 lower floor drive sprocket (second drive sprocket) , 9 Step chain, 10 Drive rail, 11 Drive rail, 12 Step plate, 13 Riser, 14 Bracket, 15 Step shaft, 16 Drive roller, 17 Follow roller, 18 Follow shaft, 19 Inclined part, 20 Step lift detection device, 21 Installation Plate, 22 shafts, 23 Rotating plate, 24 disc, 25 Locking groove, 26 Detection groove, 27 Detection sensor, 27a Button part, 28 Escalator operation management means, 29 Motor stop means, 30 Motor, 31 Voice announcement announcement Means, 32 speaker, 33 optoelectronic device operating means, 34 optoelectronic device, 35 Bear monitoring means 36 monitor board, 37 an error recording means, 38 a horizontal section.

Claims (7)

A first drive sprocket and a second drive sprocket provided in the truss;
A pair of step chains wound around the first drive sprocket and the second drive sprocket;
A plurality of steps connected to the pair of step chains via a drive shaft;
A drive roller rotatably provided at both ends of the drive shaft;
A follower roller rotatably provided on both sides of the step via a follower shaft;
A drive rail that is provided between the first drive sprocket and the second drive sprocket and guides the drive roller; and a follow rail that guides the follow roller;
A passenger conveyor provided in the truss and provided with a step lift detector that detects the lift of the step and stops the operation of the passenger conveyor. The step-up detection device is
A mounting plate fixed to the truss via a bracket;
A rotating plate provided on the mounting plate so as to be rotatable about the axis of the intermediate portion;
A disk provided rotatably on the mounting plate;
A detection sensor for detecting the rotational displacement of the disk,
The circular plate has a locking groove formed on the outer peripheral surface for locking one end of the rotating plate,
The circular plate is formed by the rotation of the other end of the rotating plate from the locking groove at the one end, which is caused by the rotation about the axis by contacting the driving roller, the follower roller or the step. The passenger conveyor according to claim 1, wherein the passenger conveyor is rotationally displaced in conjunction with the release of the lock.   The passenger conveyor according to claim 2, wherein the shaft and the rotating plate have an integral structure. The detection sensor has a retractable button portion that is urged in a protruding direction at a tip portion,
The button portion is inserted into a detection groove formed on the outer peripheral surface of the disk, and is pushed out of the detection groove when the disk is rotationally displaced, and is an outer peripheral curved surface around the detection groove of the disk. The passenger conveyor according to claim 2 or 3, wherein the disc is held by pressing.   5. The rotating plate according to claim 2, wherein the rotating plate has an inclined portion with an inclined middle portion to which the shaft is attached, and both sides of the inclined portion have horizontal portions extending in parallel with each other. The passenger conveyor of Claim 1.   The step lift detection device includes passenger conveyor operation management means for stopping driving of a motor for rotationally driving the first drive sprocket according to a detection signal from the detection sensor that detects the lift of the step. The passenger conveyor of any one of 2-5.   The passenger conveyor is an escalator, and the step-up detection device is a bent portion between the inclined portion of the step chain and a horizontal portion on the upper floor side of the truss, and the forward side of the step The passenger conveyor of any one of Claims 1-6 arrange | positioned in the middle with a return path side.

Images