JP6462826B1 - Passenger conveyor - Google Patents

Abstract

A passenger conveyor capable of controlling the pressing force applied to a handrail belt by a handrail driven wheel in accordance with a change in traveling speed. SOLUTION: A plurality of handrail driving wheels 72 for driving a handrail belt 38 in synchronization with a step 30, and a handrail belt 38 on each handrail driving wheel 72 while sandwiching the handrail belt 38 below each of the handrail driving wheels 72, respectively. For the handrail driven wheel 74 to be pressed, and a part of the handrail driven wheel 74, an electromagnetic coil 92 that changes the handrail belt 38 from the non-pressed state to the handrail drive wheel 72 or from the pressed state to the non-pressed state, The number of the handrail driven wheels 74 that press the handrail belt 38 against the handrail drive wheel 72 at the speed and the number of the handrail follower wheels 74 that press the handrail belt 38 against the handrail drive wheel 72 at the normal speed. And a control unit 50 that reduces the number of [Selection] Figure 3

Description

  Embodiments of the present invention relate to passenger conveyors.

  A handrail belt of a passenger conveyor such as an escalator or a moving sidewalk is driven by a handrail driving device. The handrail driving device is provided with a handrail driving wheel for driving a handrail belt and a handrail driven wheel. The handrail driving wheel is rotated by the driving force of the driving device that drives the step being transmitted through the chain, and the handrail driven wheel is disposed on the arc just below the handrail driving wheel. The handrail belt is pressed against the handrail driving wheel and the handrail driven wheel, and a frictional force is generated at a contact portion between the handrail driving wheel and the handrail belt and between the handrail driven wheel and the handrail belt, thereby driving the handrail belt.

JP 2013-220888 A JP 2009-149411 A

  As described above, the handrail belt is pressed and driven by the handrail driving wheel and the handrail driven wheel of the handrail driving device. For this reason, all handrail drive wheels and all handrail driven wheels are always pressed against the handrail belt regardless of normal speed or low speed operation.

  However, it is conceivable that the required frictional force for lower speed operation is lower than that for normal operation. At that time, there are many contact surfaces between the handrail driving wheel and the handrail belt, and the handrail driven wheel and the handrail belt, so that there is a problem that an indentation is generated in the handrail belt and further a running resistance is generated.

  Therefore, in view of the above problems, an embodiment of the present invention aims to provide a passenger conveyor that can control the pressing force applied to the handrail belt by the handrail driven wheel in accordance with a change in traveling speed.

An embodiment of the present invention includes a truss, a plurality of steps disposed on the truss and connected endlessly, a handrail belt, driving means for causing the step to travel at a predetermined traveling speed, and the handrail belt A plurality of handrail drive wheels that are driven in synchronism with the steps, a plurality of handrail driven wheels that are disposed below each of the plurality of handrail drive wheels, and respectively press the handrail belt against the handrail drive wheels, With respect to some of the handrail driven wheels, an electromagnetic coil that changes the handrail belt to the handrail driving wheel from a non-pressed state or a pressed state to a non-pressed state, and a low speed at which the traveling speed is slower than a normal speed The number of the handrail driven wheels that press the handrail belt against the handrail drive wheel, and the number of the handrail driven wheels that press the handrail belt against the handrail drive wheel at the normal speed. More, less by the electromagnetic coil, a passenger conveyor having a control means for pressing a portion of the handrail driven wheels, a.

Side surface explanatory drawing of the whole escalator of embodiment. Explanatory drawing of a handrail sprocket and a press sprocket. The side view which showed the pressing state to the handrail belt by the pressing member at the time of low speed driving | operation. The side view which showed the pressing state to the handrail belt by the pressing member at the time of normal driving | operation. Block diagram of the escalator.

  Hereinafter, the escalator 10 which is the passenger conveyor of one Embodiment of this invention is demonstrated with reference to FIGS. This embodiment is suitable for a narrow escalator in which the width of the step 30 is small.

(1) Escalator 10
The structure of the escalator 10 will be described with reference to FIG. FIG. 1 is an explanatory view of the escalator 10 as seen from the side.

  A truss 12 that is a framework of the escalator 10 is supported using support angles 2 and 3 across the upper and lower floors of the building 1.

  Inside the upper floor machine room 14 at the upper end of the truss 12, a drive device 18 for running the step 30, a pair of left and right drive sprockets 24, 24, and a pair of left and right handrail sprockets 27, 27 are provided. The drive device 18 stops the rotation of the motor 20, the speed reducer, the output sprocket attached to the output shaft of the speed reducer, the drive chain 22 driven by the output sprocket, and the motor 20. And a disc brake for holding the disc. The drive sprocket 24 is rotated by the drive chain 22. The pair of left and right drive sprockets 24, 24 and the pair of left and right handrail sprockets 27, 27 are connected by a connecting belt (not shown) and rotate in synchronization. A control unit 50 for controlling the motor 20, the disc brake, and the like is provided in the machine room 14 on the upper floor side.

  A driven sprocket 26 is provided inside the lower floor machine room 16 at the lower end of the truss 12. Between the driving sprocket 24 on the upper floor side and the driven sprocket 26 on the lower floor side, a pair of left and right endless step chains 28, 28 are suspended. That is, wheels 301 of a plurality of steps 30 are attached to the pair of left and right step chains 28, 28 at equal intervals. The wheel 301 of the step 30 travels along a guide rail (not shown) fixed to the truss 12 and engages with a recess in the outer peripheral portion of the drive sprocket 24 and a recess in the outer peripheral portion of the driven sprocket 26 to move up and down. Invert. The wheels 302 travel on the guide rail 25 fixed to the truss 12.

  On the left and right sides of the truss 12, a pair of left and right balustrades 36, 36 are erected. A handrail rail 39 is provided above the balustrade 36, and an endless handrail belt 38 moves along the handrail rail 39. A front skirt guard 40 on the upper floor side is provided in the lower front part on the upper floor side of the balustrade 36, and a front skirt guard 42 on the lower floor side is provided in the lower front part on the lower floor side. Inlet portions 46 and 48, which are the entrances and exits of the handrail belt 38, respectively protrude.

  A skirt guard 44 is provided at the lower side of the balustrade 36, and the step 30 travels between the pair of left and right skirt guards 44, 44. Operation panels 52 and 56 and speakers 54 and 58 are provided on the inner side surfaces of the skirt guards 44 on the upper and lower floors, respectively.

  A pair of left and right handrail belts 38 respectively enter the front skirt guard 40 from the inlet 46 on the upper floor side, and each handrail belt 38 is driven based on a handrail drive device 70 driven by the handrail sprocket 27, It moves in the skirt guard 44 and appears outside the front skirt guard 42 from the inlet 48 on the lower floor side.

  The upper floor side entrance / exit board 32 is provided horizontally at the entrance / exit on the ceiling surface of the machine room 14 on the upper floor side, and the lower floor side is provided at the entrance / exit on the ceiling surface of the machine room 16 on the lower floor side. The boarding / exiting plate 34 is provided horizontally. A comb-like comb 60 is provided at the tip of the boarding / alighting plate 32, and the step 30 advances or enters from the comb 60. A comb-like comb 62 is also provided on the boarding / alighting plate 34.

(2) Structure of Handrail Drive Device 70 Next, the structure of the handrail drive device 70 will be described with reference to FIGS. The handrail driving device 70 is provided inside the deck surrounded by the skirt guard 44 of the escalator 10. As shown in FIGS. 3 and 4, the handrail driving device 70 has a horizontally long substrate 64, a pressing sprocket 66, a handrail driving wheel 72, and a handrail driven wheel 74 provided in the vertical direction inside the deck.

  As shown in FIGS. 3 and 4, the four pressing sprockets 66 are provided on the substrate 64 so as to be rotatable by a rotation shaft 73 in one row in the horizontal direction. Further, an auxiliary sprocket 68 is fixed to the substrate 64 by a rotating shaft 69 between the two central pressing sprockets 66, 66.

  As shown in FIGS. 3 and 4, the four handrail drive wheels 72 are respectively attached to the rotation shafts 73 of the four press sprockets 66, and the handrail drive wheels 72 rotate together with the press sprockets 66. The handrail drive wheel 72 is not attached to the auxiliary sprocket 68.

  A structure for rotating the four handrail drive wheels 72 will be described with reference to FIG. Between the handrail sprocket 27 and the handrail drive device 70, two guide sprockets 96 and 98 are rotatably provided. An endless drive belt 100 is bridged between the handrail sprocket 27, the four pressing sprockets 66, the one auxiliary sprocket 68, and the guide sprockets 96 and 98. As shown in FIG. 2, the drive belt 100 includes a lower peripheral surface of the handrail sprocket 27, an upper peripheral surface of the first pressing sprocket 66, an upper peripheral surface of the second pressing sprocket 66, a lower peripheral surface of the auxiliary sprocket 68, It passes through the upper peripheral surface of the third press sprocket 66 and the upper peripheral surface of the fourth press sprocket 66, passes through the guide sprocket 96 and the guide sprocket 98, and reaches the position of the handrail sprocket 27 again. Thereby, when the handrail sprocket 27 rotates in synchronization with the drive sprocket 24 that drives the step 30, the handrail drive wheels 72 provided coaxially with the four pressing sprockets 66 also rotate in synchronization.

  As shown in FIGS. 3 and 4, the handrail driven wheels 74 are respectively provided below the four handrail drive wheels 72 attached to the substrate 64 in a row so as to be rotatable in the horizontal direction. A handrail belt 38 travels horizontally between the four handrail drive wheels 72 and the four handrail driven wheels 74.

  Each handrail driven wheel 74 is rotatably provided at the center of a substantially rectangular rotating plate 76. One end of the rotating plate 76 rotates around a rotating shaft 78, and the rotating shaft 78 is attached to the substrate 64. The other end of the rotating plate 76 is a free end, and the support plate 80 protrudes laterally. A lower receiving plate 82 and an upper receiving plate 84 project from the substrate 64 above and below corresponding to the support plate 80, respectively.

  On the lower receiving plate 82, the support plate 80, and the upper receiving plate 84 protruding from the substrate 64, screw rods 88 are arranged in the vertical direction. The screw rod 88 is fixed to the upper receiving plate 84, the support plate 80 penetrates movably, and is fixed to the lower receiving plate 82 with a nut 90 movably.

  A coiled spring spring 86 is disposed between the lower receiving plate 82 and the support plate 80 in a state where the screw rod 88 is housed inside. An electromagnetic coil 92 is disposed around the screw rod 88 and between the upper receiving plate 84 and the support plate 80. The spring spring 86 urges the other end portion of the rotating plate 76 in the upward pressing direction, whereby the handrail driven wheel 74 presses the handrail belt 38 against the handrail driving wheel 72.

  On the other hand, when the electromagnetic coil 92 is excited, the other end of the rotating plate 76 is pushed down against the biasing force of the spring spring 86, and the handrail driven wheel 74 is separated from the handrail belt 38.

(3) Electrical Configuration of Escalator 10 Next, the electrical configuration of the escalator 10 will be described based on the block diagram of FIG.

  The motor 20 made of an induction motor is a three-phase motor, and the rotation direction and the rotation speed can be controlled by the inverter circuit 21.

  The control unit 50 is connected to the inverter circuit 21, operation panels 52 and 56, speakers 54 and 58, and further connected to four electromagnetic coils 92. Further, a current detection unit 23 for detecting a drive current supplied from the inverter circuit 21 to the motor 20 is also connected.

(4) Operation State of Handrail Drive Device 70 Next, an operation state of the handrail drive device 70 will be described.

  As shown in FIG. 3, the controller 50 weakens the excitation of the electromagnetic coil 92, lowers the rotating plate 76, and separates the handrail driven wheel 74 from the handrail belt 38 when there is no passenger during low speed operation.

When the passenger rides on the escalator 10 and the drive current of the current detection unit 23 increases, the control unit 50 accelerates from the low speed operation to the normal operation. During this acceleration, the control unit 50 weakens the excitation of the electromagnetic coil 92, raises the rotating plate 76, and all the handrail driven wheels 74 press the handrail belt 38 against the handrail driving wheel 72 as shown in FIG. To do.

Also in the normal operation, the control unit 50 weakens the excitation of the electromagnetic coil 92 and presses all the handrail driven wheels 74 against the handrail belt 38 as shown in FIG.

Next, when the number of passengers decreases and the drive current of the current detection unit 23 decreases, the vehicle is decelerated to a low speed in order to change from a normal operation to a low speed operation. At the same time, as shown in FIG. 3, the controller 50 strengthens the excitation of the electromagnetic coil 92 to separate some of the handrail driven wheels 74 from the handrail belt 38 among the four handrail driven wheels 74.

Further, when a power failure occurs, the excitation of the electromagnetic coil 92 is lost , whereby the rotating plate 76 rises and the handrail driven wheel 74 presses the handrail belt 38 against the handrail driving wheel 72. Therefore, the stop holding force of the handrail belt 38 during a power failure can be maintained.

(5) Effect According to the present embodiment, when the vehicle is decelerated during low-speed operation or normal operation to low-speed operation, the handrail belt 38 and the handrail driven wheel 74 are released by releasing the pressed state of some of the handrail driven wheels 74. Running resistance generated between the two is reduced. Therefore, it is possible to reduce the life of the handrail driven wheel 74 and the dirt and indentation on the handrail belt 38 caused by the handrail driven wheel 74.

  Further, when accelerating from the low speed operation to the normal operation during normal operation, the handrail belt 38 is pressed against the handrail drive wheel 72 by all the handrail driven wheels 74, so that a reliable driving force can be obtained.

Further, when a power failure occurs, the excitation of the electromagnetic coil 92 is lost , whereby the rotating plate 76 rises and the handrail driven wheel 74 presses the handrail belt 38 against the handrail driving wheel 72. Therefore, the stop holding force of the handrail belt 38 during a power failure can be maintained.

Example of change

  In the above embodiment, the number of the handrail driven wheels 74 that are released at the time of low speed is one, but the number is not limited to this, and other numbers may be used.

  Moreover, in the said embodiment, although demonstrated applying to the escalator 10, you may replace with this and may apply to the moving sidewalk.

  Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Escalator, 20 ... Motor, 27 ... Handrail sprocket, 38 ... Handrail belt, 50 ... Control part, 64 ... Board | substrate, 70 ... Handrail drive device, 72 ... -Handrail drive wheel, 74 ... Handrail driven wheel, 76 ... Rotating plate, 86 ... Spring spring, 92 ... Electromagnetic coil

Claims (7)

A truss,
A plurality of steps arranged on the truss and connected endlessly;
A handrail belt,
Drive means for traveling the step at a predetermined traveling speed;
A plurality of handrail drive wheels that drive the handrail belt in synchronization with the steps;
A plurality of handrail driven wheels arranged below each of the plurality of handrail drive wheels and respectively pressing the handrail belt against the handrail drive wheels;
For at least some of the handrail driven wheels, an electromagnetic coil that changes the handrail belt to the handrail drive wheel from a non-pressed state to a pressed state, or from a pressed state to a non-pressed state;
When the travel speed is a low speed lower than the normal speed, the number of the handrail driven wheels that press the handrail belt against the handrail drive wheel is pressed, and the handrail belt at the normal speed is pressed against the handrail drive wheel. Control means for reducing the number of the handrail driven wheels by the electromagnetic coil and pressing with some of the handrail driven wheels ;
With passenger conveyor. The control means is controlled by the electromagnetic coil so that the handrail belt at the normal speed is pressed against the handrail driving wheel by all the handrail driven wheels.
The passenger conveyor according to claim 1. A plurality of the handrail drive wheels are provided in a row so as to be rotatable on the substrate,
A plurality of rotating plates are arranged below the plurality of handrail drive wheels,
The rotation shafts of the plurality of handrail driven wheels are respectively provided rotatably on the plurality of rotating plates,
One end of the rotating plate is rotatably provided on the substrate,
The free end that is the other end of the rotating plate is supported by a spring spring that expands and contracts in the vertical direction,
The handrail driven wheel is biased by the spring spring so as to press the handrail belt against the handrail driving wheel.
The passenger conveyor according to claim 1. The electromagnetic coil is provided between the other end of the rotating plate and the substrate;
The passenger conveyor according to claim 3. The electromagnetic coil adjusts a force that biases the other end of the rotating plate in the pressing direction according to an excitation state of the electromagnetic coil.
The passenger conveyor according to claim 4. The control means weakens the excitation of the electromagnetic coil and presses the handrail driven wheel against the handrail belt when accelerating from the low speed to the normal speed.
The passenger conveyor according to claim 5. The control means strengthens excitation of the electromagnetic coil when decelerating from the normal speed to the low speed, and separates the handrail driven wheel from the handrail belt.
The passenger conveyor according to claim 5 or 6.

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