JP5571143B2 - Abnormality detection device for passenger conveyor - Google Patents

Description

  The present embodiment relates to a passenger conveyor abnormality detection device.

  A passenger conveyor such as a moving sidewalk includes a plurality of pallets on which passengers ride and an endless chain to which these pallets are connected. The chain is spanned between the drive sprocket and the driven sprocket provided at the turn-up part, and the drive force is transmitted from the drive device to the drive sprocket, so that the chain has one entrance / exit and the other entrance / exit Cycle between and. A guide rail is provided between the pair of entrances and exits along the movement path of the pallet that circulates together with the chain, and a roller provided on the pallet engages the guide rail and rolls. The pallet is guided by the guide rail and moves between one of the entrances and the other entrance.

  By the way, since the pallet may fall off the chain if the pallet is not sufficiently connected to the chain or the bolt that connects the pallet to the chain is removed for some reason such as life or external factors, An anomaly detection device that detects pallet dropout has been proposed (see, for example, Patent Document 1 below).

JP 2003-118965 A

  However, in the above-described abnormality detection device, the detection unit for detecting the pallet dropout is provided in the vicinity of the entrance, so even if the detection unit detects the pallet dropout and stops the movement of the pallet, There is a risk that the drop-off part will appear outside from the entrance.

  Moreover, in the above-described abnormality detection device, the detection unit detects the presence or absence of the pallet by detecting the surface of the pallet. However, the ridges are provided on the surface of the pallet over the entire pallet along the movement direction of the pallet. Since the detection unit always detects the pallet unless the pallet is dropped, if the detection unit fails to detect the pallet regardless of the presence of the pallet, the failure should be detected. There is a problem that can not be.

  The present invention has been made in consideration of the above problems, and even if the detection unit detects the pallet dropping and stops the movement of the pallet, the pallet dropping part may appear to the outside from the entrance. In addition, it is an object of the present invention to provide an abnormality detection device for a passenger conveyor that can detect a failure when a detection unit fails so as to always detect a pallet regardless of the presence or absence of the pallet.

An abnormality detection device for a passenger conveyor according to an embodiment includes an endless chain that is looped between a pair of sprockets and circulates between an entrance and an exit, and a plurality of pallets coupled to the chain. The pallet detector includes a pallet detector that detects the presence or absence of the pallet by detecting the back surface of the pallet that moves from the exit to the entrance.The pallet includes a protrusion that protrudes from the back surface. A tip surface of the protrusion is detected .

It is a side view of a passenger conveyor to which an abnormality detection device according to an embodiment of the present invention is applied. It is the bottom view to which the principal part of the pallet was expanded. It is the side view to which the principal part of the pallet was expanded. It is AA sectional drawing of FIG. It is a principal part enlarged view of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  A passenger conveyor 1 illustrated in FIG. 1 is an inclined moving sidewalk to which an abnormality detection device for a passenger conveyor according to an embodiment of the present invention is applied. In the present embodiment, the pallet 2 moves from one (e.g., lower floor side) entrance / exit 7 to the other (e.g., upper floor) entrance / exit 8 and passengers pallet from the lower floor entrance / exit 7. The case of changing to the tread 2a of 2 and getting off at the entrance 8 on the upper floor side will be described.

  The passenger conveyor 1 includes a plurality of pallets 2. Endless chains 3 are attached to both sides of these pallets 2 and arranged in the truss 4.

  The illustrated chain 3 is an example of a conveyor chain in which the rollers 5 constituting the chain 3 in combination with a link plate also serve as pallet rollers provided before and after each pallet 2.

  The pallet 2 is formed by, for example, aluminum die casting. As shown in FIGS. 2 and 3, a plurality of cleat ridges 21 extending along the moving direction of the pallet 2 are predetermined on the tread surface 2 a on which the passenger rides. Cleat grooves 22 are formed between the adjacent cleat ridges 21 provided in parallel with each other at intervals. On the back surface 2b of the pallet 2, a protrusion 24 is formed so as to protrude. The protrusion 24 includes a plurality of columnar columns 24a arranged at predetermined intervals, and ribs 24b that connect the adjacent columns 24a, and reinforces the plate-like pallet 2. doing. The rib portion 24b is set to have a smaller protrusion than the column portion 24a.

  On both sides of the pallet 2, guide rails 6 are arranged along the traveling direction of the pallet 2, and are fixed to the truss 4 with bolts or the like. The guide rail 6 includes a rolling surface on which the roller 5 provided on the pallet 2 rolls, and guides the roller 5 along the guide rail 6.

  The guide rail 6 includes an outward path side guide rail 6a and a return path side guide rail 6b. In this example, the outward guide rail 6a guides the roller 5 provided on the pallet 2 moving from the lower floor entrance 7 corresponding to the entrance to the upper floor entrance 8 corresponding to the exit. The return path guide rail 6b is disposed below the forward path guide rail 6a, and guides the rollers 5 provided on the pallet 2 moving from the upper floor side entrance 8 to the lower floor side entrance 7.

  As shown in FIGS. 1 and 4, the truss 4 is arranged at substantially equal intervals between the main beams 41 at the left and right and top and bottom positions arranged along the moving direction of the chain 3 and the main beam 41 at the bottom left and right positions. A plurality of lower horizontal beams 42 connected to each other, a plurality of vertical beams 43 connecting the main beams 41 at the upper and lower positions at almost equal intervals, and a plurality of middle horizontal beams 44 connecting the left and right vertical beams 43. Prepare.

  Machine rooms 11 are provided on the upper and lower floors of the truss 4. In the machine room 11 on the upper floor side, a drive sprocket 9 and a drive device (not shown) that transmits a rotational force to the drive sprocket 9 are arranged. A driven sprocket 10 is disposed in the machine room 11 on the lower floor side.

  The chain 3 is bridged between the drive sprocket 9 and the driven sprocket 10 so that the roller 5 of the chain 3 meshes with the tooth portions 9a, 10a provided on the outer peripheral surfaces of both the sprockets 9, 10.

  Then, when the roller 5 is engaged with the teeth 9a, 10a of the drive sprocket 9 and the driven sprocket 10, the drive sprocket 9 receiving the rotational force from the drive device rotates, so that the roller 5 moves the forward guide rail 6a. It slides from the lower floor side to the upper floor side, meshes with the teeth 9a of the drive sprocket 9, moves around the outer periphery of the drive sprocket 9, and is transferred to the return path side guide rail 6b. The return path side guide rail 6b is moved to the upper floor side. After being slid to the lower floor side, it meshes with the tooth portion 10a of the driven sprocket 10, moves around the outer periphery of the driven sprocket 10, and circulates again to return to the forward guide rail 6a.

  As a result, the pallet 2 connected to the chain 3 slides on the outward guide rail 6a, appears outside from the lower floor side entrance 7 and moves to the upper floor side entrance 8, and moves to the upper floor side. After entering the interior of the truss 4 at the entrance / exit 8, the entrance / exit is so configured that the return side guide rail 6 b is slid to move inside the truss 4 from the entrance 8 on the upper floor side to the entrance 7 on the lower floor side. Cycle between 7 and the entrance 8.

  As shown in FIG. 1, a boarding board 17 that covers the upper surface of the truss 4 is provided at the boarding gate 8 on the upper floor side and the boarding board 7 on the lower floor side. A comb 18 is attached to an end of the boarding board 17 on the pallet 2 side so that the pallet 2 moves in a substantially horizontal direction below the comb 18. The comb 18 has a comb shape that meshes with the cleat ridges 21 and the cleat grooves 22 of the pallet 2 that move horizontally below the comb 18.

  A pair of left and right balustrades 14 are erected on both sides of the upper portion of the truss 4 in the width direction along the moving direction of the pallet 2. A belt-shaped moving handrail 16 that circulates in synchronization with the pallet 2 is attached to the outer periphery of the balustrade 14.

  In the passenger conveyor 1 having such a configuration, as shown in FIG. 1, below the boarding board 17 and in the vicinity of the driving sprocket 9 and the driven sprocket 10, the boarding gate 8 on the lower floor side from the boarding gate 8 on the lower floor side. 7, that is, a pallet detector 30 that detects the presence or absence of the pallet 2 that slides on the return side guide rail 6 and moves from the exit to the entrance.

  The pallet detection unit 30 on the upper floor side is provided at a position advanced 1500 to 2000 mm forward of the movement direction of the pallet 2 from the arrangement position of the comb 18 where the pallet 2 enters the truss 4, and the pallet detection unit on the lower floor side No. 30 is provided at a position retroactive to 1500 to 2000 mm backward from the arrangement position of the comb 18 where the pallet 2 appears outside the truss 4 in the moving direction of the pallet 2.

  Since the pallet detection unit 30 provided on the upper floor side and the lower floor side have the same structure, the pallet detection unit 30 provided on the upper floor side will be described below and provided on the lower floor side. The description of the pallet detection unit 30 is omitted.

  As shown in FIGS. 1 and 4, the pallet detection unit 30 is disposed above the pallet 2 that moves the back surface 2 b upward, and is fixed to a middle horizontal beam 44 provided on the truss 4 via a support 31. In this embodiment, a plurality (for example, two places) are provided at intervals in the width direction of the pallet 2.

  The pallet detection unit 30 includes, for example, a proximity sensor that detects the presence or absence of the pallet 2 from eddy currents generated in the pallet 2 by electromagnetic induction. As shown in FIGS. 4 and 5, the detection surface 30 a of the pallet detection unit 30 is The support member 31 is fixed so as to face the front end surface 24a-1 of the column portion 24a of the protrusion 24 formed on the back surface 2b of the pallet 2.

  In such a configuration, when the pallet 2 is connected to the chain 3 and the pallet 2 is not dropped, the pallet is palletized at a certain period P corresponding to the time during which one pallet 2 passes below the pallet detection unit 30. The detection surface 30a of the detection unit 30 is opposed to the tip end surface 24a-1 of the column portion 24a formed on the back surface 2b of the pallet 2, and detects the pallet 2.

  On the other hand, when the connection with the chain 3 is disconnected and the pallet 2 is dropped, the pallet detection unit 30 does not detect the pallet 2 even if the part of the chain 3 where the pallet 2 has dropped passes through the pallet detection unit 30. In the pallet detection unit 30, the pallet 2 is not detected at the above-described fixed period P. Thereby, the abnormality detection device for the passenger conveyor detects that the pallet 2 has dropped from the chain 3 and stops the operation of the passenger conveyor 1.

  As described above, in the present embodiment, the pallet detection unit 30 detects the pallet 2 moving from the entrance 8 on the upper floor, which is the exit, to the entrance 7 on the lower floor, which is the entrance. Can be detected at a position away from the position where the pallet appears outside from the entrance. For this reason, even if the passenger conveyor 1 is stopped after the pallet detection unit 30 detects the pallet 2 being dropped, there is no possibility that the dropped part of the pallet 2 appears from the entrance.

  Moreover, in this embodiment, since the pallet detection part 30 detects the front end surface 24a-1 of the protrusion 24 which protrudes from the back surface 2b of the pallet 2, the pallet 2 is connected to the chain 3 and the pallet 2 is not dropped. When normal, a detection signal is intermittently output from the pallet detection unit 30 at regular intervals P. Therefore, when the pallet detection unit 30 fails so as to always detect the pallet 2 regardless of the presence or absence of the pallet 2, the failure can be detected.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope of the present invention and the gist thereof, and are also included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 1 ... Passenger conveyor 2 ... Pallet 2a ... Tread surface 2b ... Back surface 3 ... Chain 4 ... Truss 5 ... Roller v6 ... Guide rail 6a ... Outward side guide rail 6b ... Return side guide rail 7 ... Entrance / exit 8 ... Entrance / exit 9 ... Drive sprocket 9a ... tooth part 10 ... driven sprocket 10a ... tooth part 11 ... machine room 14 ... balustrade 16 ... moving handrail 17 ... boarding board 18 ... comb 21 ... cleat ridge 22 ... cleat groove 24 ... protrusion 24a ... pillar part 24b ... Rib part 30 ... Pallet detection part 30a ... Detection surface 31 ... Support tool 41 ... Main beam 42 ... Lower horizontal beam 43 ... Vertical beam 44 ... Middle horizontal beam

Claims (2)

An endless chain that is looped between a pair of sprockets and circulates between the entrance and exit, a plurality of pallets connected to the chain, and the pallet that moves from the exit to the entrance A pallet detector that detects the presence or absence of the pallet by detecting the back surface ;
The pallet includes a protrusion protruding from the back surface,
The abnormality detection device for a passenger conveyor, wherein the pallet detection unit detects a front end surface of the protrusion.   The abnormality detection device for a passenger conveyor according to claim 1, wherein the pallet detection unit is provided below the boarding / exiting plate.

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