JP6339129B2 - Passenger conveyor - Google Patents

Description

  Embodiments of the present invention relate to passenger conveyors.

  Passenger conveyors such as escalators and moving walkways move handrail belts on the balustrade. In this method of moving the handrail belt, the handrail belt is wound around the handrail belt sheave inside the truss, and the handrail belt sheave is driven by rotating the step in synchronism with the driving step drive sprocket.

  At this time, a plurality of pressing rollers are arranged on the outer peripheral surface of the handrail belt, and each pressing roller strongly presses the handrail belt against the handrail belt sheave to ensure the friction between the handrail belt sheave and the handrail belt, Driving.

JP 2006-193295 A

  However, in order to give a large driving force to the handrail belt, if the pressing force of each pressing roller is increased, the same part of the handrail belt will have the handrail belt sheave and the pressing roller when the passenger conveyor is stopped at night. There is a problem that indentation of the pressure roller remains in that portion of the handrail belt.

  Then, embodiment of this invention aims at providing the passenger conveyor which can enlarge the drive force of a handrail belt, without raising the pressing force of a press roller.

Embodiments of the present invention include a truss, a machine room provided in the truss, a drive device including a motor provided in the machine room, a pair of left and right step drive sprockets rotated by the drive device, and a pair of right and left A plurality of endlessly connected steps driven by a step drive sprocket, a pair of left and right handrail belt sheaves rotating in synchronization with the step drive sprocket, and a pair of left and right handrail belt sheaves are wound and driven respectively. A pair of left and right handrail belts, a plurality of pressing rollers disposed on an outer periphery of the handrail belt sheave, pressing the handrail belt, and roller sprockets fixed coaxially with the rotation shaft of each pressing roller; An endless roller chain spanning the roller sprockets, and a plurality of the roller sprockets. The roller chain is hung on the handrail belt sheave side of the first roller sprocket that is coaxial with the first pressure roller, and is coaxial with the second pressure roller adjacent to the first roller sprocket. The roller chain is hung on the second roller sprocket on the opposite side of the handrail belt sheave, and the handrail is placed on the third roller sprocket coaxial with the third pressing roller adjacent to the second roller sprocket. The roller chain is re-hanged on the belt sheave side, the first pressing roller and its rotating shaft are rotatable, the second pressing roller and its rotating shaft rotate together, and the third pressing roller The first pressing roller and the rotation shaft are rotatable, the second pressing roller and the rotation shaft are rotatable. Rotating shaft is rotated together, and the third pressing roller and said rotary shaft that is rotatable a passenger conveyor.

The side view of the escalator which shows one Embodiment of this invention. The side view of the step drive sprocket and the handrail belt sheave in the truss of the escalator. The enlarged view seen from the side of a press roller group. The enlarged view seen from the plane of the press roller group. The side view of the press roller group of the example 1 of a change.

  A passenger conveyor according to an embodiment of the present invention will be described with reference to FIGS.

(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 side machine room 14 at the upper end of the truss 12, a drive unit 18 for running the step 30, a pair of left and right step drive sprockets 24, 24, and a pair of left and right handrail belt sheaves 27, 27 are provided. Yes. The drive device 18 includes a motor 20 formed of an induction motor (induction motor), a reduction gear, an output sprocket attached to the output shaft of the reduction gear, a drive chain 22 driven by the output sprocket, and rotation of the motor 20. And an electromagnetic brake that holds the stopped state. The drive chain 22 rotates a step drive sprocket 24. The pair of left and right step drive sprockets 24 and 24 and the pair of left and right handrail belt sheaves 27 and 27 are connected by a transmission chain 102 and rotate. Further, a control device 50 for controlling the motor 20 and the electromagnetic brake is provided in the machine room 14 on the upper floor side.

  A step driven sprocket 26 is provided inside the lower floor side machine room 16 at the lower end of the truss 12. A pair of left and right endless step chains 28, 28 are spanned between the upper floor side step drive sprocket 24 and the lower floor side step driven sprocket 26. That is, the front wheels 301 of the plurality of steps 30 are attached to the pair of left and right step chains 28, 28 at equal intervals. The front wheel 301 travels along a guide rail (not shown) fixed to the truss 12, and engages with a recess 23 on the outer periphery of the step drive sprocket 24 and a recess on the outer periphery of the step driven sprocket 26, respectively. Flip up and down. Further, the rear wheel 302 travels 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 entrances and exits of the handrail belt 38, protrude from each other.

  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.

The handrail belt 38 enters the front skirt guard 40 from the inlet 46 on the upper floor side, and is passed over the handrail belt sheave 27 via a guide roller group 64 including a plurality of guide rollers 92, and then to move through the skirt guard 44 through a guide roller group 66 consisting of the guide roller 94, it appears from the lower floor side of the inlet portion 4 8 outside front skirt guard 42. The handrail belt 38 moves in synchronization with the step 30 as the handrail belt sheave 27 rotates together with the step drive sprocket 24. In addition, a pressing roller group 70 including a plurality of pressing rollers 72 for pressing the handrail belt 38 traveling on the rotating handrail belt sheave 27 is provided.

  An entrance / exit of a pair of left and right skirt guards 44, 44 on the upper floor side, and the upper floor side entrance / exit plate 32 is horizontally provided on the ceiling surface of the machine room 14. A lower floor side entrance / exit board 34 is provided horizontally on the ceiling surface of the machine room 16, which is the entrance for the pair of left and right skirt guards 44, 44 on the lower floor side. A comb-like comb 60 is provided at the front end of the upper floor board 32, and the step 30 enters the comb 60. A comb-like comb 62 is also provided at the tip of the lower floor board 34.

(2) Drive structure of the handrail belt 38 Next, the drive structure of the handrail belt 38 will be described with reference to FIGS.

  As shown in FIG. 2, a handrail belt 38 is wound around the lower side of the handrail belt sheave 27, and the pressing roller group 70 is disposed on the outer peripheral portion thereof as described above. The pressing roller group 70 includes a plurality of pressing rollers 72, and the two adjacent pressing rollers 72 and 72 are rotatably held by a pair of link plates 74 that form a chain. One link plate 74 has two bearings, and a rotation shaft 76 of the pressing roller 72 is rotatably fitted in each of them, and one rotation plate 76 has a bearing of one link plate 74 and adjacent thereto. A bearing of another link plate 74 is fitted. Thereby, a plurality of pairs of link plates 74 are connected in a chain shape via the rotation shaft 76 of the pressing roller 72.

  As shown in FIG. 4, the rotation shaft 76 of the pressing roller 72 sandwiched between the pair of link plates 74 protrudes from one link plate 74, and a roller sprocket 78 is fixed to the rotation shaft 76.

  As shown in FIG. 2, the lower end portion of the lowermost linked link plate 74 is fixed to the truss 12 using a fixing member 112.

  As shown in FIG. 2, the upper end of the uppermost linked link plate 74 is fixed to the truss 12 using a spring support member 80 that is a biasing means. The spring support member 80 includes a coil spring 82, a male screw rod 84, a fixed end 86 and a moving end 88, and a nut 90. The lower end of the male threaded rod 84 of the spring support member 80 is fixed to the upper end of the link plate 74, the moving end 88 is fitted to the upper end of the male threaded rod 84, and the moving end 88 has a biasing force in the contracting direction. The upper end of 82 is fixed. A fixed end 86 is fixed to the lower end of the coil spring 82, and the fixed end 86 is fixed to the truss 12. The moving end 88 moves along the male threaded rod 84 according to the tightening degree of the nut 90, and the urging force of the coil spring 82 changes. Thereby, the plurality of pressing rollers 72 of the pressing roller group 70 can adjust the pressing force in the radially inward direction of the handrail belt sheave 27.

  As shown in FIG. 2, the guide roller group 64 is provided on the truss 12 on the upper floor side of the handrail belt sheave 27 as described above. In the guide roller group 64, a plurality of guide rollers 92 are rotatably arranged, and guide the handrail belt 38 from the inlet portion 46 to the lower outer peripheral portion of the handrail belt sheave 27.

  As shown in FIG. 2, the guide roller group 66 is provided on the truss 12 on the lower floor side of the handrail belt sheave 27 as described above. In the guide roller group 66, a plurality of guide rollers 94 are rotatably arranged, and guide the handrail belt 38 drawn from the lower outer peripheral portion of the handrail belt sheave 27 toward the lower floor side.

  As shown in FIG. 2, the step drive sprocket 24 is provided with a transmission drive sprocket 96 and a roller main procket 98 coaxially. The handrail belt sheave 27 is provided with a transmission driven sprocket 100 coaxially. An endless transmission chain 102 is bridged between the transmission drive sprocket 96 and the transmission driven sprocket 100. Thereby, when the step drive sprocket 24 and the transmission drive sprocket 96 rotate, the transmission driven sprocket 100 and the handrail belt sheave 27 rotate in synchronization with each other by the transmission chain 102.

  As shown in FIG. 2, a first roller driven sprocket 104 and a second roller driven sprocket 106 are provided below the pressure roller group 70. An endless first roller chain 108 is stretched between the first roller driven sprocket 104 and the roller main procket 98. An endless second roller chain 110 is bridged between the first roller driven sprocket 104, the second roller driven sprocket 106, and the plurality of pressing rollers 72. As shown in FIGS. 2 and 3, the first roller 72 (the rightmost roller 72 in FIGS. 2 and 3) has a method of linking the second roller chain 110 to the roller 72. It hangs on the handrail belt sheave 27 side, hangs on the second pressing roller 72 adjacent to the side opposite to the handrail belt sheave 27, and then hangs on the handrail belt sheave 27 side on the adjacent third pressing roller 72. The second roller chain 110 is laid on the pressing roller 72 alternately in order. This is because the second roller chain 110 is driven in one direction to rotate all the pressing rollers 72 along the rotation direction of the handrail belt sheave 27.

(3) Driving Method of Handrail Belt 38 Next, a driving method of the handrail belt 38 will be described.

  As shown in FIGS. 1 and 2, when the motor 20 rotates, the step drive sprocket 24 rotates at a predetermined speed, and the front wheels 301 of the plurality of steps 30 engaged with the recesses 23 move to move the step 30. Travels in a certain direction.

  As shown in FIG. 2, the step drive sprocket 24 rotates, and the transmission drive sprocket 96 and the roller main sprocket 98 also rotate. When the transmission drive sprocket 96 is rotated, the handrail belt sheave 27 is rotated by the transmission chain 102 and the handrail belt 38 is moved.

  As shown in FIG. 2, when the roller main procket 98 rotates, the first roller driven sprocket 104 is rotated by the first roller chain 108. When the first roller driven sprocket 104 rotates, the second roller chain 110 is driven, and the second roller driven sprocket 106 and the plurality of pressing rollers 72 rotate. At this time, as shown in FIG. 3, since the second roller chain 110 is spanned so that the positions of the roller sprockets 78 are alternated, each pressing roller 72 is moved along the rotation direction of the handrail belt sheave 27. The handrail belt 38 rotated and pressed against the handrail belt sheave 27 can be pressed while applying a driving force.

(4) Effect According to the above embodiment, the driving force of the handrail belt 38 is increased because the plurality of pressing rollers 72 are pressed while rotating in the same direction as the handrail belt sheave 27.

  Further, since the pressing roller 72 rotates, a strong pressing force as in the prior art becomes unnecessary, and even if the pressing roller 72 presses the same portion of the handrail belt 38 for a long time (for example, at night), a pressing mark is generated. There is no remaining.

(5) Modification 1
Modification 1 of the above embodiment will be described. In the above embodiment, the second roller chain 110 is alternately wound around the roller sprockets 78 of the plurality of pressing rollers 72. However, the present invention is not limited to this, and as shown in FIG. The rightmost pressing roller 72) is bridged to the handrail belt sheave 27 side, the adjacent second pressing roller 72, and the adjacent third pressing roller 72 on the side opposite to the handrail belt sheave 27. And the adjacent fourth pressure roller 72 is again bridged to the handrail belt sheave 27 side. As a result, all the pressing rollers 72 rotate in the same direction, and a driving force can be applied while pressing against the handrail belt 38.

(6) Modification 2
Modification 2 of the above embodiment will be described. In the above embodiment, the handrail belt sheave 27 is rotated. However, the handrail belt sheave 27 is not limited to this, and the handrail belt 38 may be driven by rotating only the plurality of pressing rollers 72. .

(7) Modification 3
A third modification of the embodiment will be described. In the above embodiment, the plurality of pressing rollers 72 are rotated by using the driving force of the step drive sprocket 24. However, the present invention is not limited to this, and a motor for rotating the plurality of pressing rollers 72 may be separately provided and rotated. Good.

(8) Other Modifications In the above embodiment, the description is applied to the escalator 10, but it may be applied to a moving sidewalk instead.

  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, 12 ... Truss, 14 ... Machine room, 24 ... Step drive sprocket, 27 ... Handrail belt sheave, 70 ... Press roller group, 72 ... Press roller, 74 ... Link plate, 76 ... Rotating shaft, 78 ... Roller sprocket, 96 ... Transmission drive sprocket, 98 ... Roller sprocket, 100 ... Transmission driven sprocket, 102 ... Transmission chain , 104 ... 1st roller sprocket, 106 ... 2nd roller sprocket, 108 ... 1st roller chain, 110 ... 2nd roller chain

Claims (7)

A truss,
A machine room provided in the truss;
A driving device including a motor provided in the machine room;
A pair of left and right step drive sprockets rotated by the drive device;
A plurality of steps connected endlessly driven by a pair of left and right step drive sprockets;
A pair of left and right handrail belt sheaves rotating in synchronization with the step drive sprocket;
A pair of left and right handrail belts that are respectively wound around and driven by the pair of left and right handrail belt sheaves;
A plurality of pressing rollers arranged on an outer periphery of the handrail belt sheave and pressing the handrail belt;
Roller sprockets fixed coaxially with the rotation shaft of each pressing roller,
An endless roller chain spanned over each of the roller sprockets;
Have
Among the plurality of roller sprockets, a first roller sprocket coaxial with the first pressing roller has the roller chain hung on the handrail belt sheave side and a second pressing adjacent to the first roller sprocket. The second roller sprocket coaxial with the roller has the roller chain hung on the opposite side of the handrail belt sheave, and the third roller sprocket coaxial with the third pressing roller adjacent to the second roller sprocket The roller chain is again hung on the handrail belt sheave side,
The first pressing roller and the rotating shaft thereof are freely rotatable;
The second pressing roller and the rotating shaft rotate together,
The third pressing roller and the rotation shaft thereof are rotatable.
Passenger conveyor. The roller chain spans a roller main sprocket provided coaxially with the step drive sprocket.
The passenger conveyor according to claim 1. A transmission drive sprocket is provided coaxially with the step drive sprocket,
A transmission driven sprocket is provided coaxially with the handrail belt sheave,
An endless transmission chain is bridged between the transmission drive sprocket and the transmission driven sprocket.
The passenger conveyor according to claim 1. The rotating shafts of the adjacent pressing rollers are clamped from both sides by a pair of link plates, and each pressing roller is connected in a chain shape.
The passenger conveyor according to claim 1. The end of the link plate at the most end connected to the chain is fixed to the truss,
The passenger conveyor according to claim 1. The end of the link plate at the other end connected in the chain shape is fixed to the truss via an urging means, and the urging means presses each pressing roller against the handrail belt sheave. ing,
The passenger conveyor according to claim 5. The passenger conveyor is an escalator or a moving walkway.
The passenger conveyor according to claim 1.

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