JP2021001043A - Passenger conveyor - Google Patents

Abstract

To provide a passenger conveyor capable of easily adjusting the elongation of a handrail chain.SOLUTION: A passenger conveyor has: a driving sprocket 66 provided coaxially with a handrail driving wheel 72; an auxiliary sprocket 68; an endless handrail chain 96 bridged between the driving sprocket 66 and the auxiliary sprocket 68; a handrail sprocket 27 for driving the handrail chain 96; a support member 102 for rotatably supporting the auxiliary sprocket 68; and a vertical movement member 104 provided above the support member 102 to make the support member 102 move up and down against a base plate 64 with a jack bolt 114.SELECTED DRAWING: Figure 1

Description

An embodiment of the present invention relates to a passenger conveyor.

In a passenger conveyor such as an escalator or a moving walkway, a handrail belt traveling along a balustrade is driven by, for example, a linear drive type handrail drive device. In this handrail device, a plurality of handrail drive wheels arranged in a straight line move the handrail belt. The drive sprocket of each of these handrail drive wheels is provided coaxially, and each drive sprocket is simultaneously rotated by an endless handrail chain to drive the handrail drive wheel.

JP-A-63-27389 Japanese Unexamined Patent Publication No. 63-47289

When the handrail drive wheel is rotated by the handrail chain as described above, there is a problem that the pin and bush of the chain are worn and the chain length is increased due to long-term use of the handrail chain.

Therefore, in view of the above problems, an embodiment of the present invention aims to provide a passenger conveyor capable of easily adjusting the elongation of the handrail chain.

An embodiment of the present invention includes a truss, a sprocket erected on the sprocket, a sprocket belt for traveling the sprocket, and a sprocket drive device for traveling the sprocket belt. The handrail drive device includes a substrate fixed to the truss, a plurality of handrail drive wheels rotatably provided side by side on the substrate to drive the handrail belt, and coaxial with each of the handrail drive wheels. A drive sprocket, an auxiliary sprocket, a plurality of the drive sprocket, an endless handrail chain bridged over the auxiliary sprocket, a handrail chain driving means for driving the handrail chain, and the auxiliary. A passenger conveyor having a support member that rotatably supports the sprocket, and a vertical movement means that is provided above the support member and moves the support member up and down with respect to the substrate.

Side view of the handrail drive device. The vertical sectional view of the vertical movement device in a handrail drive device. Perspective view of the vertical movement device. The perspective view of the jack bolt support part. The side explanatory view of the escalator which shows one Embodiment of this invention. An explanatory view of a structure in which a drive sprocket and an auxiliary sprocket are rotated by a handrail sprocket.

Hereinafter, the escalator 10, which is a passenger conveyor according to an embodiment of the present invention, will be described with reference to FIGS. 1 to 6. This embodiment is suitable for, for example, a narrow escalator in which the width of the step 30 is small.

(1) Escalator 10
First, the structure of the escalator 10 will be described. FIG. 5 is an explanatory view of the escalator 10 as viewed from the side.

The truss 12, which is the framework of the escalator 10, is supported by the support angles 2 and 3 across the 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 device 18 for traveling 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 is in a stopped state. Has a disc brake and holds. 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 synchronously. Further, inside the machine room 14 on the upper floor side, a control unit 50 for controlling a motor 20, a disc brake, and the like is provided.

A driven sprocket 26 is provided inside the machine room 16 on the lower floor side at the lower end of the truss 12. A pair of left and right endless step chains 28, 28 are bridged between the drive sprocket 24 on the upper floor side and the driven sprocket 26 on the lower floor side. That is, the 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 wheels 301 of the step 30 travel along a guide rail (not shown) fixed to the truss 12, and engage with a recess on the outer periphery of the drive sprocket 24 and a recess on the outer periphery of the driven sprocket 26 to move up and down. Invert. Further, the wheels 302 travel on the guide rail 25 fixed to the truss 12.

A pair of left and right balustrades 36, 36 are erected on both the left and right sides of the truss 12. A handrail rail 39 is provided on the upper part of the balustrade 36, and the endless handrail belt 38 moves along the handrail rail 39. The front skirt guard 40 on the upper floor is provided in the lower front on the upper floor side of the balustrade 36, and the front skirt guard 42 on the lower floor side is provided in the lower front on the lower floor side from the front skirt guards 40 and 42. The inlet portions 46 and 48, which are the entrances and exits of the handrail belt 38, project respectively.

A skirt guard 44 is provided at the lower part of the side surface of the balustrade 36, and the step 30 runs 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 surfaces of the skirt guards 44 on the upper and lower floors, respectively.

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

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

(2) Structure of Handrail Drive Device 70 Next, the handrail drive device 70 will be described with reference to FIGS. 1 to 6. As shown in FIG. 5, the handrail drive device 70 is provided above the truss 12 and inside the deck surrounded by the skirt guard 44 of the escalator 10. As shown in FIG. 1, the handrail drive device 70 is a linear drive type, and is a horizontally long substrate 64 provided above the truss 12 in the vertical direction and four pieces arranged in a straight line. It has a handrail drive wheel 72, a handrail driven wheel 74, and a drive sprocket 66.

As shown in FIG. 1, the four drive sprockets 66 are arranged on the substrate 64 in a straight line in the horizontal direction and rotatably provided by the drive shaft 73. Further, an auxiliary sprocket 68 is provided between the two central drive sprockets 66, 66. The handrail drive wheel 72 is not attached to the auxiliary sprocket 68, and is indirectly attached to the substrate 64 by the vertical movement device 100. The vertical movement device 100 will be described in detail later.

As shown in FIG. 1, the four handrail drive wheels 72 arranged in a straight line are attached to the drive shafts 73 of the four drive sprockets 66, respectively, and the handrail drive wheels 72 rotate together with the drive sprocket 66. ..

The structure for rotating the four handrail drive wheels 72 arranged in a straight line will be described with reference to FIG. Two guide sprockets 92 and 94 are rotatably provided between the handrail sprocket 27 and the handrail driving device 70. An endless handrail chain 96 is hung on the handrail sprocket 27, four drive sprockets 66, one auxiliary sprocket 68, and guide sprockets 92 and 94. The handrail chain 96 includes a lower peripheral surface of the handrail sprocket 27, an upper peripheral surface of the first drive sprocket 66, an upper peripheral surface of the second drive sprocket 66, a lower peripheral surface of the auxiliary sprocket 68, and a third drive sprocket. It passes through the upper peripheral surface of the 66 and the upper peripheral surface of the fourth drive sprocket 66, passes through the guide sprocket 92 and the guide sprocket 94, and reaches the position of the handrail sprocket 27 again. As a result, when the handrail sprocket 27 rotates in synchronization with the drive sprocket 24 that drives the step 30, the four handrail drive wheels 72 that are coaxially provided with the four drive sprocket 66 also rotate.

As shown in FIG. 1, each of the four handrail driven wheels 74 is provided below the four handrail drive wheels 72 that are linearly attached to the substrate 64. A handrail belt 38 runs between the four handrail drive wheels 72 and the four handrail driven wheels 74.

As shown in FIG. 1, the handrail driven wheel 74 is rotatably provided by a rotating shaft 98 at the center of a substantially rectangular rotating plate 76. A support shaft 78 is provided at one end of the rotating plate 76, and the support shaft 78 is rotatably attached to the substrate 64. The other end of the rotating plate 76 is a free end, and the support plate 80 projects laterally from the other end. The lower receiving plate 82 and the upper receiving plate 84 project from the substrate 64 above and below corresponding to the support plate 80, respectively.

As shown in FIG. 1, screw rods 88 are arranged in the vertical direction on the lower receiving plate 82, the supporting plate 80, and the upper receiving plate 84 protruding from the substrate 64. The screw rod 88 is fixed to the upper receiving plate 84, the support plate 80 is movably penetrated, and the lower receiving plate 82 is movably screwed with a nut 90. As shown in FIG. 1, a coil-shaped spring spring 86 is arranged between the lower receiving plate 82 and the support plate 80 in a state where the screw rod 88 is housed inside. The spring spring 86 urges the support plate 80 upward, whereby the handrail driven wheel 74 presses the handrail belt 38 against the handrail drive wheel 72.

(3) Vertical movement device 100 of the auxiliary sprocket 68
Next, the vertical movement device 100 for moving the auxiliary sprocket 68 up and down with respect to the substrate 64 will be described with reference to FIGS. 1 to 6.

As described above, the endless handrail chain 96 that rotates the four drive sprockets 66 and the auxiliary sprockets 68 wears the pins and bushes of the chain after many years of use, and the chain length is extended. That is, the chain is connected by inserting a pin into the bush with multiple links, and when tension is applied to the chain, pressure is generated on the contact surface between the pin and bush, so the pin and bush wear over time, and the pin and pin As the distance increases, the chain length increases. Therefore, it is necessary to move the auxiliary sprocket 68 downward along the substrate 64 in order to absorb the extension of the chain length. The vertical movement device 100 is for moving the auxiliary sprocket 68 downward.

As shown in FIGS. 2 and 3, the vertical movement device 100 has a support member 102 that rotatably supports the auxiliary sprocket 68, and a vertical movement member 104 provided above the support member 102.

As shown in FIGS. 2 and 3, the support member 102 has a support plate 106. The support plate 106 has a bottomed portion in which a rectangular metal plate is bent into a U shape at the bottom, and an open portion at the top. A fixed shaft 108 is provided in the horizontal direction inside the bent support plate 106. The fixed shaft 108 is provided with an auxiliary sprocket 68 rotatably via a bearing 110. A jack nut 112 is fixed to the open upper portion of the support plate 106.

As shown in FIGS. 2 and 3, the vertical moving member 104 will be described. The vertical movement member 104 has a jack bolt 114 and a jack bolt support portion 116 that supports the jack bolt 114. As shown in FIG. 4, the jack bolt support portion 116 includes a plate-shaped vertical member 118, an upper horizontal member 120 projecting horizontally from the vertical member 118, and an upper horizontal member horizontally projecting from the vertical member 118. The lower horizontal member 122 arranged below 120 is integrally formed. A through hole 124 through which the jack bolt 114 penetrates is provided in the center of the lower horizontal member 122. Further, an insertion groove 126 is provided continuously with the through hole 124, and the insertion groove 126 opens to the front surface of the lower horizontal member 122. The insertion groove 126 and the through hole 124 are formed to be larger than the diameter of the jack bolt 114. As shown in FIGS. 2 and 3, the vertical member 118 of the jack bolt support portion 116 is fixed to the substrate 64 by a bolt (not shown). As shown in FIG. 1, this fixed position is above the position where the auxiliary sprocket 68 is arranged and is located between the drive sprocket 66.

As shown in FIGS. 2 and 3, the substrate 64 is provided with a vertical moving groove 128 below the position where the jack bolt support portion 116 is fixed. A support member 102 is fitted in the moving groove 128 so that it can move up and down. Further, the support member 102 is fixed by the fixing plate 130 in a state of being fitted in the moving groove 128. The fixing plate 130 is formed by bending a metal plate so as to surround both side surfaces and the front surface of the support member 102, and the fixing plate 130 is fixed to the substrate 64 by bolts (not shown).

(4) Method of Assembling the Vertical Movement Device 100 A method of assembling the vertical movement device 100 will be described with reference to FIGS. 1 to 3.

First, the spring seat 132 is fitted to the jack bolt 114 (see FIGS. 2 and 3).

Next, the first fixing nut 134 is screwed into the jack bolt 114, and the spring seat 132 is sandwiched between the head 114a of the jack bolt 114 and the first fixing nut 134 (see FIGS. 2 and 3).

Next, the jack bolt 114 to which the spring seat 132 and the first fixing nut 134 are attached is fitted into the through hole 124 through the insertion groove 126. As a result, the head 114a of the jack bolt 114, the spring seat 132, and the first fixing nut 134 are located between the upper lateral member 120 and the lower lateral member 122 (see FIGS. 2 and 3).

Next, the second fixing nut 136 is placed on the jack nut 112 (see FIGS. 2 and 3).

Next, the screw rod 114b of the jack bolt 114 attached to the jack bolt support portion 116 is screwed into the second fixing nut 136 and the jack nut 112 so that the support member 102 hangs from the jack bolt 114 (FIGS. 2 and 2). 3).

Next, the support member 102 is fixed to the substrate 64 by the fixing plate 130 (see FIGS. 2 and 3).

Next, the handrail chain 96 is bridged over four drive sprockets 66, an auxiliary sprocket 68, a guide sprocket 92, a guide sprocket 94, and a handrail sprocket 27, and both ends thereof are connected to form an endless shape. As a result, when the handrail sprocket 27 rotates, the four drive sprocket 66 and the auxiliary sprocket 68 rotate, and the four handrail drive wheels 72 rotate (see FIGS. 2 and 3).

Then, when the handrail chain 96 is extended, the auxiliary sprocket 68 attached to the support member 102 is moved downward by loosening the first fixing nut 134 and the second fixing nut 136 and rotating the head 114a of the jack bolt 114. Let me. As a result, the handrail chain 96 is pulled by the amount of extension, and the extension is absorbed. After that, the first fixing nut 134 and the second fixing nut 136 are tightened and fixed.

(5) Effect According to the present embodiment, even if the handrail chain 96 is extended, it can be easily adjusted by rotating the jack bolt 114.

Further, since the head 114a of the jack bolt 114 can be adjusted at the position of the jack bolt support portion 116 located between the four drive sprockets 66 arranged above the truss 12, a worker can enter the truss 12. Easy to adjust without.

Further, since the head 114a of the jack bolt 114 is arranged between the upper horizontal member 120 and the lower horizontal member 122, the jack bolt 114 does not come off.

Further, when the jack bolt 114 is attached to the jack bolt support portion 116, it can be easily inserted from the insertion groove 126 into the through hole 124 of the lower lateral member 122.

Further, since the support member 102 rotatably provided with the auxiliary sprocket 68 moves in the vertical direction along the moving groove 128 and is fixed to the fixing plate 130, it does not shift in the other direction.

(6) Modification Example Although the above embodiment has been described by applying it to the escalator 10, it may be applied to a moving walkway 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 embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 ... Escalator, 20 ... Motor, 27 ... Handrail sprocket, 38 ... Handrail belt, 50 ... Control unit, 64 ... Board, 70 ... Handrail drive device, 72 ... Handrail drive wheel, 74 ... Handrail driven wheel, 76 ... Rotating plate, 86 ... Spring spring, 96 ... Handrail chain, 100 ... Vertical movement device, 102.・ ・ Support member, 104 ・ ・ ・ Vertical movement member, 112 ・ ・ ・ Jack nut, 114 ・ ・ ・ Jack bolt, 116 ・ ・ ・ Jack bolt support part, 118 ・ ・ ・ Vertical member, 120 ・ ・ ・ Upper horizontal member , 122 ... Lower horizontal member, 124 ... Through hole

An embodiment of the present invention includes a truss, a balustrade erected on the truss, a handrail belt running on the balustrade, and a handrail driving device for running the handrail belt. The handrail drive device includes a substrate fixed to the truss, a plurality of handrail drive wheels rotatably provided side by side on the substrate to drive the handrail belt, and coaxial with each of the handrail drive wheels. The drive sprocket, the auxiliary sprocket, the plurality of the drive sprocket, the endless handrail chain bridged over the auxiliary sprocket, the handrail chain driving means for driving the handrail chain, and the auxiliary. a support member for rotatably supporting the sprockets, disposed above the supporting member, have a, a vertical movement means for vertically moving relative to the substrate of the support member, the vertical movement means includes a jack bolt, It has a jack bolt support portion that rotatably supports the jack bolt and is fixed to the substrate, a jack nut is provided on the upper portion of the support member, and the jack bolt is screwed with the jack nut. The jack bolt support portion includes a vertical member fixed to the substrate, an upper and horizontal member projecting laterally from the vertical member, and laterally projecting from the vertical member and arranged below the upper and horizontal member. The head of the jack bolt is arranged between the upper horizontal member and the lower horizontal member, and the jack bolt penetrates the through hole of the lower horizontal member. It is a passenger conveyor.

Claims (10)

With the truss
The balustrade erected on the truss and
The handrail belt that runs on the balustrade and
A handrail drive device for running the handrail belt and
Have,
The handrail drive device is
The substrate fixed to the truss and
A plurality of handrail drive wheels rotatably provided on the substrate to drive the handrail belt,
A drive sprocket provided coaxially with each of the handrail drive wheels,
Auxiliary sprocket and
An endless handrail chain bridged over the plurality of the driving sprockets and the auxiliary sprockets,
The handrail chain driving means for driving the handrail chain and
A support member that rotatably supports the auxiliary sprocket,
A vertical movement means provided above the support member and moving the support member up and down with respect to the substrate.
Passenger conveyor with. The vertical movement means includes a jack bolt and a jack bolt support portion that rotatably supports the jack bolt fixed to the substrate.
A jack nut is provided on the upper part of the support member.
The jack bolt is screwed with the jack bolt.
The passenger conveyor according to claim 1. The jack bolt support portion includes a vertical member fixed to the substrate and a vertical member.
An upper and horizontal member protruding in the horizontal direction from the vertical member,
A lower horizontal member that projects laterally from the vertical member and is arranged below the upper horizontal member.
The head of the jack bolt is arranged between the upper horizontal member and the lower horizontal member, and penetrates through a through hole of the lower horizontal member.
The passenger conveyor according to claim 2. An insertion groove for inserting the jack bolt is continuously provided in the through hole of the lower horizontal member.
The passenger conveyor according to claim 3. A nut is fixed between the lower lateral member and the head of the jack bolt.
The passenger conveyor according to claim 4. A spring seat is provided between the nut and the head of the jack bolt.
The passenger conveyor according to claim 5. The support member is fitted in a moving groove provided on the substrate and is fixed to the substrate so as to be vertically movable by a fixing plate.
The passenger conveyor according to claim 6. The substrate is provided with the vertical moving means above the truss.
The passenger conveyor according to claim 1. A plurality of the handrail drive wheels are arranged side by side on the substrate in a horizontal row.
The auxiliary sprocket is arranged in the center of the plurality of handrail drive wheels.
The passenger conveyor according to claim 1. The plurality of handrail driving means are handrail sprockets over which the handrail chain is laid.
The passenger conveyor according to claim 1.

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