JP2014069902A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passenger conveyor such as an escalator and a moving walk that can reduce a linear dimension of a machine frame unit and has good maintainability.SOLUTION: An endless conveyor chain 5 for connecting a plurality of steps 6 and a driving device 1 for driving the endless conveyor chain 5 through a power transmission mechanism are housed on one end side of a machine frame unit 8. The driving device 1 is arranged so that at least partially overlaps with an area surrounded by a step moving locus 4 when planarly viewed from a vertical direction outside the area surrounded by the step moving locus 4.

Description

  The present invention relates to passenger conveyors such as escalators and moving walkways, and more particularly to a mounting structure for a passenger conveyor drive device.

  In general, passenger conveyors such as escalators, moving walkways, and the like, endless chains (hereinafter referred to as “endless conveyor chains”) that connect a plurality of steps moving up and down stepwise or horizontally move endlessly, and endless conveyor chains, And a drive device that is driven via a power transmission mechanism. These drive units, power transmission mechanisms, and endless conveyor chains are housed in a machine frame unit (also called “truss”, “machine room”, etc.) that connects between the landings and landings of passenger conveyors. Yes. Geared motors, gearless motors, and the like are well known as driving devices for passenger conveyors, and induction motors, synchronous motors, and the like are used as these motors. In addition, as a driving method of a passenger conveyor such as an escalator, for example, (i) a method of connecting an output vehicle (sprocket) of a driving device and a main drive (sprocket) of an endless conveyor chain via an endless driving chain, (Ii) A system in which a motor serving as a driving device is directly connected to a main drive shaft of an endless conveyor chain is known. These driving methods are disclosed in, for example, Patent Documents 1 to 5 and the like.

  In the drive method (i) above, it is necessary to secure a drive chain interval between the main drive and the drive device (for example, a geared motor) on one end side of the machine frame unit. There was a tendency to become longer. On the other hand, since the drive system (ii) does not require the drive chain as described above, the length of the machine frame unit can be shortened accordingly.

JP 2001-158586 A JP 2001-31353 A JP 2001-19331 A JP-A-62-272791 Japanese Patent Publication No.55-10513

  As described above, in the conventional passenger conveyor, the driving method of (i) is such that a driving device (for example, an electric motor) and a power transmission mechanism (for example, an electric motor) for driving an endless conveyor chain are provided on one end side of the machine frame unit. Drive chain). Among these, since the drive device requires a relatively large space, the overall length of the machine casing unit is increased, and the occupied space in the building of the passenger conveyor is increased.

  On the other hand, the drive method (ii) can reduce the length of the machine frame unit and can solve the problem of the drive method (i) described above, but the drive device is connected with a number of steps. Since it is incorporated in a narrow space such as the inside of an endless conveyor chain, maintenance tends to be complicated.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a passenger conveyor such as an escalator or a moving sidewalk that can shorten the length of the machine casing unit and has good maintainability. is there.

  In order to solve the above problems, the present invention provides an endless conveyor chain that connects a plurality of steps endlessly, a drive device that drives the endless conveyor chain via a power transmission mechanism, the drive device, and a power transmission mechanism In addition, the following drive device arrangement structure is proposed for a passenger conveyor including a machine frame unit that houses an endless conveyor chain. That is, the driving device has at least a part of the region surrounded by the step movement locus when viewed in a plane from the vertical direction outside the region surrounded by the movement locus of the step connected to the endless conveyor chain. It is arranged so that it may overlap.

  Here, the step includes a flat step such as a moving sidewalk as well as a stepped step such as an escalator.

  According to the present invention, a passenger conveyor drive device can be mounted on a machine frame unit together with a power transmission mechanism by effectively utilizing a narrow space that has not been used in the past. Miniaturization can be achieved. Furthermore, since the drive device can be arranged outside the step movement trajectory, that is, outside the endless conveyor chain, the drive device can be easily maintained and inspected, and a passenger conveyor with good maintainability can be provided.

The cross-sectional view which shows the drive mechanism periphery of the passenger conveyor in one Example of this invention. The longitudinal cross-sectional view which shows the drive mechanism periphery of the passenger conveyor in one Example of this invention. The longitudinal cross-sectional view which shows an example of the drive mechanism periphery of the conventional passenger conveyor.

  Hereinafter, embodiments of the present invention will be described based on the examples shown in FIGS. 1 and 2.

  The embodiment shown in the figure shows, as an example, passenger conveyors such as escalators and moving walkways as an example, and the inversion position (step inversion) on one side of the endless conveyor chain housed in the machine frame unit 8 is shown. A part of the mechanism 3) and the surrounding drive device 1, a power transmission mechanism and the like are shown.

  The passenger conveyor comprises at least one drive device 1. For example, the drive device 1 is composed of, for example, an electric motor 1 with a speed reducer, that is, a so-called geared motor, and the speed reducer has a planetary shape that is long and small in the radial direction. A gear mechanism is used. The drive device 1 is not limited to a type such as a synchronous motor or an induction motor. As an optimal example, the drive device 1 is a PM motor (permanent magnet type motor, magnet) having higher efficiency and higher output than an induction motor. Type synchronous motor).

  A sprocket 2 (first sprocket) serving as a component of the power transmission mechanism is attached to the output side of the drive device 1. The power transmission mechanism is spanned between the sprocket 2 attached to the drive device 1 side, the sprocket 12 (second sprocket) attached to the rotary shaft 9 side of the step reversing mechanism 3, and the sprockets 2, 12. Drive chain 7.

  A large number of steps 6 constituting an escalator or a moving sidewalk conveyor are connected to the two parallel endless conveyor chains 5 endlessly in an inclined direction (up and down direction) or in a horizontal direction. The endless conveyor chain 5 and the step 6 are reversed via a step reversing mechanism on the landing side and the landing side of the passenger conveyor. Of the step reversing mechanisms, the step reversing mechanism 3 on the side including the driving device 1 is It is provided on either the landing side or the landing side.

  The rotating shaft 9 of the step reversing mechanism 3 becomes a driving shaft (main drive shaft) of the endless conveyor chain 5, and both ends thereof are rotatably supported by the left and right side frames of the machine frame unit 8 via bearings 10. Yes. The rotary shaft 9 is provided with a pair of sprockets (main drive) 11 for the endless conveyor chain 5 and a sprocket 12 for the drive chain 7.

  The drive device 1, the power transmission mechanism (2, 7, 12), the step reversing mechanism 3, and the endless conveyor chain 5 with the step 6 are accommodated in a machine frame unit 8 constituted by a casing. The driving device 1 and the step reversing mechanism 3 are arranged near one end of the machine casing unit 8 so that the respective rotation axes are parallel to each other.

  The power of the driving device 1 is transmitted to the rotating shaft 9 of the step reversing mechanism 3 through the sprocket 2, the driving chain 7, and the sprocket 12. This power transmission causes the endless conveyor chain 5 and the step 6 to travel endlessly between the landings and the landings via the sprocket 11.

  Here, in the movement process of Step 6, the outermost movement locus 4 drawn by Step 6, that is, the region that interferes with Step 6 when other parts are installed when Step 6 passes, It is defined as The driving device 1 of the present embodiment is fixedly arranged outside the step movement locus 4 in the machine casing unit 8, but the point different from the conventional one is that the stepping movement is performed when the driving device 1 is viewed in plan view from the vertical direction. It is in the point arrange | positioned so that at least one part may overlap with the area | region enclosed by a locus | trajectory.

  In order to employ the above arrangement structure, at least a part of the outer periphery of the electric motor constituting the driving device 1 is configured so that the lower half 4B and the machine of the arc locus (4A to 4B) at one inversion position in the step movement locus 4 The outer diameter of the driving device 1 and the arrangement position thereof are set so as to enter between the frame unit 8 and the floor surface 8A. The drive device 1 is attached to the floor surface 8A via the fixture 1a.

  Here, for comparison with the present embodiment, an example of a mounting structure of a driving device in a conventional passenger conveyor will be described with reference to FIG. 3, the same reference numerals as those in FIGS. 1 and 2 indicate the same or common elements. Conventionally, for example, an induction motor is used as the driving device 100, and the power of the driving device 100 is transmitted to the step reversing mechanism 3, and then to the endless conveyor chain 5 via the speed reducer 102. The speed reducer 102 includes an input pulley 102 a that inputs the power of the drive device 100 via the belt 101, and a sprocket 102 b that transmits the output of the speed reducer to the step reversing mechanism 3 via the drive chain 7.

  Conventionally, sufficient consideration has not been given to the space saving of the driving device 100 and the speed reducer 102, and consideration is given to a mounting structure that allows at least part of the drive device 100 and the reduction gear 102 to enter the lower side of the step movement locus 4 as in this embodiment. (In other words, the driving device 100 and the speed reducer 102 are located away from the region surrounded by the step movement locus when viewed in plan from the vertical direction). In the example, part or all of the drive device 1 enters the lower side of the step movement locus. According to the arrangement structure of the drive device 1 of the present embodiment, the drive device 1 is integrated into the machine frame unit 8 together with the power transmission mechanism and the step reversing mechanism 3 by effectively utilizing a narrow space that has not been used conventionally. It can be mounted, and space saving of the machine casing unit 8 can be achieved, and the dimensions can be shortened and miniaturized. Furthermore, since the drive device 1 can be disposed outside the step movement trajectory 4, maintenance and inspection of the drive device 1 are easy, and a passenger conveyor with good maintainability can be realized.

  As a preferred example, the maximum radius of the drive device 1 is r1, the radius r2 of the arc trajectory 4B of the step movement trajectory from the center of the rotating shaft 9 of the step reversing mechanism 3, the lower line of the step movement trajectory 4 and the machine unit floor. Assuming that the distance between the surfaces 8A is r3, if r1 / r2 ≦ 10/27 based on the following formulas (1) and (2) under the condition of r3 << r1, the drive device 1 It is possible to enter approximately 1/3 or more on the side, which is sufficiently effective for rationalizing the space of the machine frame unit.

here,
L: Distance obtained by subtracting r1 from the horizontal distance between the center of the drive unit and the step reversing mechanism From the above formulas (1) and (2) and the current general values of r2 (= 470 mm) and r3 (= 518.7 mm),
In order to put the driving device below the trajectory by 1/3 or more, r1 / r2 = 10/27 or less may be set.

  Instead of the above embodiment, at least a part of the outer periphery of the driving device 1 covers the upper half 4A of the arc trajectories (4A to 4B) in the step movement trajectory 4 and the upper surface of the machine frame unit 8 (not shown). The drive device 1 may be arranged so that the cover enters between the cover and the passenger conveyor user).

  In the case where the passenger conveyor is an escalator, the machine frame unit 8 is installed over the upper floor and the lower floor, which are both landings and landings. In this case, the driving device 1 is connected to the upper floor. It may be mounted in either one or both of the machine frame unit space on the side and the machine frame unit space on the lower floor. Even in the case of a sidewalk on which the passenger conveyor moves, the driving device 1 may be mounted on one or both of the landing and the landing.

  Further, the power transmission mechanism of the above embodiment uses the sprockets 2 and 12 and the drive chain 7, but a pulley and a drive belt may be used instead. Further, instead of these, a gear mechanism may be used.

  In addition, when a PM motor is used as the driving device 1, the outer diameter thereof is smaller than that of other electric motors, and the outer shape can be made long and elongated in the axial direction. A gearless PM motor may be used. By using the gearless PM motor as the driving device 1, the lower half 4 </ b> B or the upper half 4 </ b> B and the floor of the machine frame unit 8 in the arc locus (4 </ b> A to 4 </ b> B) at one reverse position in the step movement locus 4. The drive device mounting structure of the present invention can be more effectively realized that can be easily placed horizontally between the surface 8A and can reduce the size of the machine frame unit and thereby reduce the size of the passenger conveyor. can do.

DESCRIPTION OF SYMBOLS 1 ... Drive device, 2 ... Sprocket, 3 ... Step inversion mechanism, 4 ... Step movement locus, 5 ... Endless conveyor chain chain, 6 ... Step, 7 ... Drive chain, 8 ... Machine frame unit.

Claims (4)

An endless conveyor chain that connects multiple steps endlessly;
A driving device for driving the endless conveyor chain via a power transmission mechanism;
A machine frame unit that houses the drive device, the power transmission mechanism and the endless conveyor chain,
In the passenger conveyor that drives the endless conveyor chain by the drive unit and moves the step endlessly between the landing and the landing of the passenger conveyor,
The drive device is disposed outside the region surrounded by the step movement locus and so as to at least partially overlap with the region surrounded by the step movement locus when viewed in plan from the vertical direction. Passenger conveyor featuring.   2. The drive device according to claim 1, wherein the drive device is an electric motor having an elongated cylindrical shape with a reduction gear or a gearless, and at least a part of an outer peripheral portion of the arc locus at one reversal position in the movement locus of the step. The outer diameter and the arrangement position are set so as to enter between the lower half part and the floor surface of the machine frame unit, and the rotation axis thereof is parallel to the drive axis of the endless conveyor chain. Passenger conveyor installed horizontally on the floor.   2. The drive device according to claim 1, wherein the drive device is made up of a gearless PM motor, and at least a part of the outer peripheral portion thereof includes a lower half portion of an arc locus at one reversal position in the movement locus of the step and the frame unit. The outer diameter and the arrangement position are set so as to enter between the floor surface, and the rotation shaft is installed horizontally on the floor surface so as to be parallel to the drive shaft of the endless conveyor chain. Passenger conveyor. In any one of Claims 1 thru | or 3,
The power transmission mechanism includes a first sprocket provided on the output side of the drive device, a second sprocket provided on the drive shaft of the endless conveyor chain, and an endless drive chain bridged between the sprockets. A passenger conveyor comprising: an outer diameter of the first sprocket set smaller than an outer diameter of the driving device.

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