JP2019094139A - Escalator - Google Patents

Abstract

To provide an escalator in which breakage of a wheel of a foot step can be easily detected.SOLUTION: The escalator has: a pair of left and right common rails 102 which are provided in an inclined section 12c of a truss 12, and in which a rail of an approach route on which a front wheel 301 travels and a rail of an approach route on which a rear wheel 302 travels are integrated; a foot step sinkage detection device 70 which is provided on each of the common rails 102, and includes a rear approach switch 142 which detects a height to the rear wheel 302; and a control part 50 which determines that the rear wheel 302 is broken when the rear approach switch 142 is operated.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to escalators.

  In order to ensure the safety of the passengers, the escalator is provided with a step depression detecting device for detecting a state of the wheel when the step is broken and the step is sunk.

  2. Description of the Related Art Conventionally, a step depression detecting device is provided with a detection piece for detecting passage of a wheel and a limit switch for detecting movement of the detection piece in a rail through which a wheel of a step passes. When a normal wheel passes, the detection piece moves and the limit switch operates. When the partially broken wheel passes and the detection piece does not move and the limit switch does not operate, the traveling of the escalator is stopped.

Japanese Patent Application Laid-Open No. 9-278337 JP, 2007-22731, A

  However, the step depression detecting device including the combination of the detection piece and the limit switch has a problem that the number of parts is large and the cost is high, and the detection position of the wheel of the step is difficult to set.

  Then, an embodiment of the present invention aims at providing an escalator which can detect breakage of a wheel of a step simply in view of the above-mentioned problem.

  According to an embodiment of the present invention, there are provided a truss having an inclined section, a plurality of steps connected endlessly by a step chain, a drive device for causing the steps to travel, a pair of left and right front wheels and a pair of left and right wheels provided on the steps. Rear wheels, a pair of left and right common rails provided in the inclined section of the truss, wherein the front wheels travel in the forward path, and the rails in which the rear wheels travel the forward path are integrated; A step depression detecting device provided on the common rail and including a rear proximity switch that detects a height to the rear wheel, and a control unit that determines that the rear wheel is broken when the rear proximity switch operates And an escalator having

Explanatory drawing seen from the side of the escalator which shows one Embodiment of this invention. The enlarged side view of the step which drives a common rail. The longitudinal cross-sectional view of the front wheel vicinity which is drive | working a common rail. The longitudinal cross-sectional view of the rear wheel vicinity which is drive | working a common rail. Block diagram of the escalator.

  Hereinafter, an escalator 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

(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 viewed from the side.

  A truss 12 which is a framework of the escalator 10 is supported by supporting angles 2 and 3 straddling upper and lower floors of the building 1.

  Inside the machine room 14 on the upper floor side at the upper end of the truss 12, a drive 18 for moving the step 30, a pair of left and right drive sprockets 24, 24, and a pair of left and right belt sprockets 27, 27 are provided. The drive device 18 includes a motor 20 including an induction motor (induction motor), a reduction gear, an output sprocket attached to an output shaft of the reduction gear, a drive chain 22 driven by the output sprocket, and rotation of the motor 20 And a disk brake for holding the stopped state. 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 belt sprockets 27, 27 are connected by a connecting belt (not shown) and synchronously rotate. Further, inside the machine room 14 on the upper floor side, a control unit 50 that controls the motor 20, a disk brake, and the like is provided.

  A driven sprocket 26 is provided in the lower machine room 16 at the lower end of the truss 12. A pair of left and right endless step chains 28, 28 shown in FIG. 2 are stretched between the drive sprocket 24 on the upper floor side and the driven sprocket 26 on the lower floor side.

  On the left and right sides of the truss 12, a pair of left and right skirt guards 44, 44 and a pair of left and right balustrades 36, 36 are provided upright. A handrail rail 39 is provided above the balustrade 36, and the handrail belt 38 moves along the handrail rail 39. A front skirt guard 40 on the upper floor is provided at the lower front of the upper floor of the balustrade 36, and a front skirt guard 42 on the lower floor is provided at the lower front on the lower floor. The inlets 46 and 48 which are the entrance and exit of the handrail belt 38 respectively project. The skirt guard 44 is provided at the lower part of the side of the balustrade 36, and the step 30 travels between the pair of left and right skirt guards 44, 44. Control 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.

  The handrail belt 38 intrudes into the front skirt guard 40 from the inlet 46 on the upper floor side, is stretched around the belt sprocket 27 via the guide roller group 64, and then the skirt guard 44 via the guide roller group 66. It moves inside and appears from the inlet 48 on the lower floor side to the outside of the front skirt guard 42. The handrail belt 38 moves in synchronization with the step 30 as the belt sprocket 27 rotates with the drive sprocket 24. In addition, a pressing member 68 for pressing the handrail belt 38 traveling on the rotating belt sprocket 27 is provided.

  On the ceiling of the machine room 14 on the upper floor side, an entrance plate 32 on the upper floor side is horizontally provided at the entrance and exit of the machine room 16 on the lower floor side. A passenger board 34 is provided horizontally. A comb-like comb 60 is provided at the tip of the landing plate 32, and the step 30 advances or intrudes from the comb 60. Further, a comb-like comb 62 is also provided on the board 34.

(2) Step 30
Next, the steps 30 will be described with reference to FIG. As shown in FIG. 2, the step 30 has a step frame 303 with triangles on both sides, a cleat surface 304 provided on the upper surface of the step frame 303, a riser surface 305 provided on the rear surface of the step frame 303, and a step frame 303. A pair of left and right front wheels 301 provided at the front of the rear of the step frame 303, that is, a pair of left and right rear wheels 302 provided at the lower part of the riser surface 305.

  A substantially semicircular shaft attachment portion 308, 308 is provided at the front lower portion of the step frame 303, and one front axle 306 having a pair of left and right front wheels 301, 301 fixed thereto is rotatable on the shaft attachment portion 308. Is engaged. The pair of left and right step chains 28 are engaged with the front axle 306 between the front wheel 301 and the step frame 303.

  A pair of left and right legs 309, 309 respectively project from the rear lower portion of the step frame 303 obliquely downward. An axial hole is opened in the legs 309, and a rear axle 307 of the rear wheel 302 disposed outside the legs 309 penetrates and is fixed with a nut 310 inside the legs 309. The diameter of the front wheel 301 is formed larger than the diameter of the rear wheel 302.

(3) Rail The rail mounted on the truss 12 and on which the front wheel 301 and the rear wheel 302 of the step 30 travel will be described with reference to FIG.

  First, as shown in FIG. 1, the truss 12 is composed of a horizontal section 12a having a machine room 14, a horizontal section 12b having a machine room 16 and an inclined section 12c connecting the horizontal sections 12a and 12b.

  Next, the rail on which the rear wheel 302 of the step 30 travels will be described.

  The forward rail on which the rear wheel 302 of the step 30 travels is on the upper side of the horizontal section 12b on the lower floor side, and continuously curves from the horizontal state upward, and then continues from the rear rail 100 and the rear rail 100. And the common rail 102 provided along the inclined section 12c and the horizontal direction continuously curved from the common rail 102 in a horizontal direction and provided in the horizontal section 12a on the upper floor side. And a rear rail 104, each of which is fixed to the truss 12.

  The rail on the return side on which the rear wheel 302 travels is located below the horizontal section 12a on the upper floor side, and is provided in a straight line continuously from the rail 106 and then the rail 106 after it curves downward from the horizontal state. , The rear rail 108 disposed in the inclined section 12c, and the rear rail 110 which is horizontally curved by being curved horizontally from the rear rail 108 and disposed in the lower floor side horizontal section 12b, each of which is a truss It is fixed to twelve.

  In the upper floor side horizontal section 12a, the semicircular rail 112 disposed between the forward side rear rail 104 and the return side rear rail 106, and in the lower floor side horizontal section 12b, the return side rear rail 110 And a semicircular rail 114 disposed between the forward rear rail 100 and fixed to the truss 12.

  Next, the rail on which the front wheel 301 of the step 30 travels will be described.

  The forward rail on which the front wheel 301 of the step 30 travels is on the upper side of the horizontal section 12b on the lower floor side and continuously from the front rail 116 and the front rail 116 curved upward continuously from the horizontal state A common rail 102 provided linearly and provided along the inclined section 12c, and a front rail 118 which is horizontally curved from the common rail 102 to be in a horizontal state and provided in the upper floor side horizontal section 12a. And each is fixed to the truss 12.

  The rail on the return side on which the front wheel 301 travels is located below the horizontal section 12a on the upper floor side, and is continuously provided in a straight line from the front rail 120 curved downward from the horizontal state, It is composed of a straight front rail 122 disposed in the inclined section 12c, and a front rail 124 which is horizontally curved from the front rail 122 in a horizontal direction and disposed in the lower floor side horizontal section 12b. Are secured to the truss 12.

  On the upper floor side, the forward rail 118 on the outgoing side and the front rail 120 on the return side are connected by a drive sprocket 24. Further, the lower rail side return rail 124 and the forward rail 116 are connected by a driven sprocket 26. That is, the front wheel 301 arriving at the end of the forward rail 118 on the forward side in the upper floor side horizontal section 12a engages with the recess of the drive sprocket 24, and after the drive sprocket 24 rotates a half turn, the front rail 120 on the return route side. Lead to The front wheel 301 arriving at the end of the front rail 124 on the return side in the lower floor side horizontal section 12b engages with the recess of the driven sprocket 26, and after the driven sprocket 26 makes a half rotation, the front rail 116 on the outgoing side Lead to

(4) Step Slope Detection Device 70
Next, the step depression detection device 70 will be described with reference to FIGS. 1 to 4.

  First, in the inclined section 12c of the truss 12, as shown in FIG. 2, the front wheel 301 and the rear wheel 302 travel on the common rail 102 which is the same rail. As shown in FIGS. 3 and 4, the common rail 102 is formed to be larger than the width in which the front wheel 301 and the rear wheel 302 can travel side by side, and an outer wall 130 is provided upright on the outside of the common rail 102. The inner wall 132 is set up. Further, a partition wall 134 is provided upright between the outer wall 130 and the inner wall 132. The reason why the front wheel 301 and the rear wheel 302 can travel on one common rail 102 is that the distance between the pair of left and right front wheels 301, 301 is as shown in FIGS. 3 and 4 for the pair of left and right rear wheels 302, 302. Because the front wheel 301 is wider than the interval and the diameter of the front wheel 301 is larger than that of the rear wheel 302, the front wheel 301 is maintained at the same inclination angle while maintaining the horizontal condition of the cleat surface 304 of the step 30 as shown in FIG. And the rear wheel 302 can travel.

  As shown in FIG. 3, a front proximity switch 140 </ b> L is provided on the partition wall 134 in the vicinity of the upper floor side of the left common rail 102. The front proximity switch 140 L is located below the step chain 28 provided inside the front wheel 301.

  As shown in FIG. 4, a rear proximity switch 142 </ b> L is provided on the inner wall 132 in the vicinity of the upper floor side of the left common rail 102. This position is located below the nut 310 that secures the rear wheel 302.

  Although the front proximity switch 140L and the rear proximity switch 142L provided on the left common rail 102 have been described with reference to FIGS. 2 to 4, the front proximity switch 140R and the rear proximity switch 142R are also provided on the right common rail 102. It is provided similarly.

  A pair of left and right front proximity switches 140R and 140L and rear proximity switches 142R and 142L are also provided near the lower floor side of the common rail 102.

(5) Electrical Configuration of Escalator 10 Next, the electrical configuration of the escalator 10 will be described with reference to the block diagram of FIG.

  The control unit 50 is connected to a drive device 18 for driving the motor 20 shown in FIG. 1, the operation units 52 and 56, and the speakers 54 and 58, and is further connected to the step depression detection device 70. That is, a pair of left and right front proximity switches 140R and 140L and a pair of left and right rear proximity switches 142R and 142L on the upper floor side of the step depression detection device 70, and a pair of left and right front proximity switches 140R and 140L on the lower floor side A pair of rear proximity switches 142R and 142L are connected. Note that “proximity switch” refers to an inductive proximity switch that detects the presence of metal, a static switch that detects the presence of metal and nonmetal objects, as defined in the JIS standard (JIS C 8201-5-2). A capacitive proximity switch, an ultrasonic proximity switch that detects an acoustic reflection object, and a photoelectric proximity switch that detects the presence of an object. When the left and right front proximity switches 140R and 140L are expressed collectively, the “front proximity switch 140” is described, and when the left and right rear proximity switches 142R and 142L are expressed collectively, the “back proximity switch 142” is described. Do.

(6) Operation State of Step Slope Detection Device 70 Next, the operation state of the step Slope detection device 70 will be described with reference to FIGS. 2 to 4.

  As shown in FIGS. 2 and 3, when the left front wheel 301 of the step 30 is in a normal state, the distance between the step chain 28 attached to the left front wheel 301 and the front proximity switch 140L is a predetermined normal distance , The front proximity switch 140L does not operate. However, if part of the front wheel 301 on the left side is broken and inclined, the distance between the step chain 28 and the front proximity switch 140L becomes closer than the normal distance, the front proximity switch 140L operates, and the front wheel breakage signal to the control unit 50 Output When the front wheel damage signal is input from the front proximity switch 140L, the control unit 50 notifies the administrator of the escalator 10 that the front wheel 301 is broken through the communication unit 72, and stops the drive device 18, The travel of the step 30 is stopped. Further, the control unit 50 broadcasts that the escalator 10 is stopped from the speakers 54 and 58. Although the cleat surface 304 of the step 30 is horizontal when the front wheel 301 is normal, if the pair of left and right front wheels 301 or one of the rear wheels 302 is broken, the cleat surface 304 inclines and sinks.

  As shown in FIGS. 2 and 4, when the left rear wheel 302 is in a normal state, the distance between the nut 310 fixing the left rear wheel 302 and the rear proximity switch 142L is a predetermined normal distance. As it is, the rear proximity switch 142L does not operate. However, if the left rear wheel 302 is partially damaged and tilted, the distance between the rear proximity switch 142L and the nut 310 becomes smaller than the normal distance, and the rear proximity switch 142L operates to cause the controller 50 to break the rear wheel Output a signal. When the rear wheel breakage signal is input from the rear proximity switch 142L, the control unit 50 notifies the administrator of the escalator 10 that the rear wheel 302 is broken through the communication unit 72, and stops the driving device 18, thereby the escalator The travel of the ten steps 30 is stopped. Further, the control unit 50 broadcasts that the escalator 10 is stopped from the speakers 54 and 58.

(7) Effects According to the present embodiment, when the front wheel 301 is damaged, the front proximity switch 140 operates to output a front wheel breakage signal to the control unit 50, and when the rear wheel 302 is damaged, the rear proximity is generated. The switch 142 operates to output a rear wheel breakage signal to the control unit 50. When the damage signal is input, the control unit 50 immediately stops the drive device 18 and can ensure the safety of the passenger. In addition, since the control unit 50 broadcasts that the escalator 10 is stopped from the speakers 54 and 58, the safety of the passenger can be further ensured.

  Further, since only the front proximity switch 140 and the rear proximity switch 142 are attached to the common rail 102, the attachment operation is easy and the number of parts can be reduced.

  Further, since the diameter of the front wheel 301 to which the step chain 28 is attached is larger than that of the rear wheel 302, the driving force of the step chain 28 can be transmitted to the travel of the steps 30 to the maximum. That is, since the step chain 28 pulls the large diameter front wheel 301, the driving force can be obtained more reliably.

(8) Modification 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, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 10 ... Escalator, 12 ... Truss, 14 ... Machine room, 16 ... Machine room, 18 ... Drive device, 28 ... Step chain, 30 ... Step, 102 ... Common rail, 140: front proximity switch, 142: rear proximity switch, 301: front wheel, 302: rear wheel, 303: step frame

According to an embodiment of the present invention, a truss having an inclined section, a plurality of steps connected endlessly by a step chain, a drive device for causing the steps to travel, a pair of left and right front wheels and a pair of left and right provided on the steps Rear wheels, a pair of left and right common rails provided in the inclined section of the truss, wherein the front wheels travel in the forward path, and the rails in which the rear wheels travel the forward path are integrated; When the step proximity detector including a rear proximity switch provided on each of the common rails and detecting the height to the rear wheel and operating closer to a predetermined normal distance , when the rear proximity switch operates, And a control unit that determines that the rear wheel is broken.

Claims (10)

Truss with inclined section,
A plurality of steps connected endlessly by a step chain,
A driving device for causing the steps to travel;
A pair of left and right front wheels and a pair of left and right rear wheels provided on the steps;
A rail provided on the inclined section of the truss, wherein a rail on which the front wheel travels on an outward path and a rail on which the rear wheel travels on an outward path are integrated as a pair of left and right common rails.
A step depression detecting device including a rear proximity switch provided on each of the left and right common rails and detecting a height to the rear wheel;
A control unit that determines that the rear wheel is broken when the rear proximity switch is operated;
With escalator. The step depression detecting device further includes a front proximity switch provided on each of the left and right pair of common rails and detecting a height to the front wheel,
The control unit determines that the front wheel is broken when the front proximity switch operates.
The escalator according to claim 1. The diameter of the front wheel is larger than the diameter of the rear wheel,
The escalator according to claim 2. The distance between the pair of left and right front wheels is longer than the distance between the pair of left and right rear wheels,
The escalator according to claim 3. The step has a step frame,
A pair of left and right legs extending from the rear of the step frame,
The rear wheel is disposed outside the rear end of the leg,
Rear axles of the pair of left and right rear wheels are independent of each other, and the rear axles pass through the legs and are fixed to the inside of the legs with nuts.
The rear proximity switch detects the height to the nut,
The escalator according to claim 4. A front axle connecting the pair of left and right front wheels is provided at the front of the step frame,
The step chain is provided on the front axle located between the front wheel and the step frame;
The front proximity switch detects the height to the step chain,
The escalator according to claim 5. The pair of left and right rear proximity switches and the pair of left and right front proximity switches of the step depression detection device are respectively provided on the upper floor side and the lower floor side of the common rail.
The escalator according to claim 6. The control unit stops the driving device when one of the left and right pair of rear proximity switches or one of the left and right pair of front proximity switches is operated.
The escalator according to claim 7. The drive rotates the drive sprocket,
The rotation of the drive sprocket causes the step to travel and causes the front wheel of the step to reverse from the forward side to the return side.
The escalator according to claim 1. The common rail is provided with a partition wall which divides the traveling path of the front wheel and the traveling path of the rear wheel.
The escalator according to claim 1.

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