JP5783820B2 - Man conveyor, its step guide device and its operating method - Google Patents

Description

  The present invention relates to a man conveyor, a step guide device thereof, and an operation method thereof, and more particularly to a guide structure for regulating axial displacement of a drive roller of a step unit.

  In a conventional man conveyor, guide shoes are inserted into holes provided on both side surfaces of the step so as to be movable in the direction toward the skirt guard panel, and the elastic body is biased in the direction toward the skirt guard panel. The guide shoe contacts the skirt guard panel when moving in the width direction of the step so that a slight gap can be secured between the side surface of the step and the skirt guard panel. A step device has been proposed (see, for example, Patent Document 1).

JP 2003-95571 A

  In the conventional man conveyor, when some steps are removed, the movement of the step roller in the width direction in the area where the steps are removed is the same as the guide shoes in the steps before and after the area where the steps are removed. Regulated by contact with the skirt guard panel. Therefore, during maintenance and inspection, when driving with some steps removed at the intermediate part such as an inclined part, excessive contact is made between the contact area between the guide shoe and the skirt guard panel at the steps before and after the area where the steps are removed. There was a problem that a load was applied, stable running was not performed, and work efficiency of maintenance inspection was lowered.

  The present invention has been made to solve such a problem, and even if the operation is performed with the step removed, the movement in the width direction of the drive roller from which the step has been removed is regulated to be stable. It is an object of the present invention to provide a man conveyor, a step guide device thereof, and an operation method thereof capable of enabling smooth running and suppressing a reduction in maintenance inspection work efficiency.

The step guide device for a man conveyor according to the present invention is configured in an endless manner by connecting links, and a driving roller is rotatably disposed at each joint of the links. A pair of stepped chains that are disposed relative to each other at two distances facing each other and circulate synchronously, and extend along the direction of circulation of the pair of stepped chains, As the pair of step chains circulate, the pair of drive roller guide rails on which the drive roller travels, the step composed of the tread plate and the riser fixed to the frame, and the detachable attachment to the frame The drive shafts are connected to the drive rollers facing each other of the pair of step chains so as to be endlessly connected, and the pair of step chains And a rung units circulating running in conjunction with the circulation traveling, during maintenance, the rung is a step guide device passenger conveyor to be removed from the drive shaft, the ends of the drive shaft A boss portion fitted in an externally fitted state, a first fastening means for fastening and fixing the boss portion to the drive shaft, and a ring arranged coaxially with the boss portion and having one end surface as a sliding contact surface And a connecting portion that connects and integrates the boss portion and the guide portion, and the boss portion that is fitted to the end of the drive shaft in an externally fitted state is the first fastening. The guide shaft is fixedly attached to the drive shaft, and when the step chain circulates, the sliding surface of the guide portion slides on the side surface of the driving roller guide rail to guide the driving roller. .

According to the present invention, the boss portion is fitted to the end portion of the drive shaft in an externally fitted state, and is fastened and fixed to the drive shaft by the first fastening means. Since the surface is in sliding contact with the side surface of the drive roller guide rail to guide the travel of the drive roller, movement of the drive roller in the axial direction is restricted. So, at the time of maintenance and inspection, be operated in a state in which the removal of the Stepping seen stage, running of the passenger conveyor is stable, work efficiency of maintenance and inspection is improved.

It is sectional drawing which shows typically the whole structure of the man conveyor which concerns on Embodiment 1 of this invention. It is II-II arrow sectional drawing of FIG. It is the A section enlarged view of FIG. It is sectional drawing which shows the step guide apparatus in the man conveyor which concerns on Embodiment 1 of this invention. It is a principal part side view explaining the attachment state of the step guide apparatus in the man conveyor which concerns on Embodiment 1 of this invention. It is principal part sectional drawing explaining the attachment state of the step guide apparatus in the man conveyor which concerns on Embodiment 2 of this invention. It is a figure explaining the structure of the step guide apparatus in the man conveyor which concerns on Embodiment 3 of this invention.

  Hereinafter, an embodiment applied to an escalator as a preferred embodiment of a step guide device for a man conveyor according to the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
1 is a cross-sectional view schematically showing the overall structure of a man conveyor according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 4 is a cross-sectional view showing the step guide device in the man conveyor according to Embodiment 1 of the present invention, and FIG. 5 is a diagram for explaining the mounting state of the step guide device in the man conveyor according to Embodiment 1 of the present invention. FIG. FIG. 4 shows only the upper side of the axis of the step guide device.

  1 to FIG. 5, a man conveyor 1 includes a main frame 2 installed between upper and lower floors, a step unit 3 connected endlessly and disposed on the main frame 2 so as to be able to circulate, and a step. A pair of balustrades 4 erected on the main frame 2 so as to sandwich the unit 3, and an endless moving handrail 5 attached to the peripheral portion of each balustrade 4 are provided.

  A drive motor 8 and a pair of upper step sprockets 9 are installed in the upper machine chamber 6 of the main frame 2, and a pair of lower step sprockets 10 are installed in the lower machine chamber 7 of the main frame 2. The pair of upper step sprockets 9 are fixed to the rotating shaft at a predetermined distance apart in the axial direction. A drive chain 11 is wound around a drive sprocket 12 and a drive motor 8 that are fixed to the rotating shaft of the upper step sprocket 9. A movable handrail drive chain 13 is wound around a movable handrail drive sprocket 14 and a movable handrail intermediate sprocket 15 fixed to the rotating shaft of the upper step sprocket 9.

  The step unit 3 is attachable to and detachable from a step which is configured by attaching a tread plate 21 and a riser 22 constituting a tread surface on which a passenger rides to the frame 20, and an anti-riser 22 side of the frame 20 with the axial direction as a width direction. And a drive shaft 23 attached rotatably around the shaft, drive rollers 24 attached to both ends of the drive shaft 23, and driven rollers 25 attached to both sides of the frame 20 on the riser 22 side. Yes.

  The step chain 17 is configured to be endless by connecting the links 18, and the drive roller 24 is rotatably disposed at the joint of the links 18. The step chain 17 is wound around a pair of upper step sprockets 9 and a pair of lower step sprockets 10. Thereby, a pair of step chain 17 is arrange | positioned so that circulation driving | running | working can be carried out synchronously synchronously in two vertical surfaces which left | separated predetermined distance in the horizontal direction (width direction). The step unit 3 is connected endlessly by connecting both ends of the drive shaft 23 to the drive roller 24 facing in the width direction.

  The main frame 2 includes a driving roller guide rail 26 that guides the driving roller 24 and a driven roller guide rail 27 that guides the driven roller 25, and a pair of upper step sprockets 9 to 10. It is extended to reach. The drive roller 24 is guided by the drive roller guide rail 26, the driven roller 25 is guided by the driven roller guide rail 27, and the step unit 3 can circulate.

  A guide body 30 as a step guide device includes a cylindrical boss portion 31, a circular ring-shaped guide portion 32 that is arranged coaxially with the boss portion 31 and has one end surface as a sliding contact surface, and a boss portion 31. And a disk 33 as a connecting portion for connecting and integrating the guide portion 32. In each step unit 3, the guide body 30 is mounted with the boss portions 31 fitted on both ends of the drive shaft 23 so as to be fitted between the sliding contact surface of the guide portion 32 and the inner side surface of the drive roller guide rail 26. The drive shaft 23 is fastened by a fixing bolt 34 which is adjusted in position so as to have a very small gap and is screwed to a female screw portion 31 a formed in the boss portion 31, and is arranged inside the drive roller 24. The female thread 31a and the fixing bolt 34 constitute first fastening means.

  In the man conveyor 1 configured as described above, the rotational torque of the drive motor 8 is transmitted to the drive sprocket 12 via the drive chain 11, and the pair of upper step sprocket 9 fixed to the rotation shaft together with the drive sprocket 12 and the movement. The handrail drive sprocket 14 is driven to rotate. The pair of step chain 17 is circulated in synchronism with the rotation of the pair of upper step sprockets 9, the drive roller 24 is guided to the drive roller guide rail 26, and the driven roller 25 is guided to the driven roller guide rail 27. Thus, the step unit 3 is circulated. Further, the rotational torque of the moving handrail driving sprocket 14 is transmitted to the moving handrail intermediate sprocket 15 via the moving handrail driving chain 13, the moving handrail driving device 16 is driven, and the moving handrail 5 is moved to the step unit 3. Synchronize with and run cyclically.

  Here, when a force for displacing the step unit 3 to the one side in the width direction is applied, the step unit 3 slightly moves to the one side in the width direction, and the guide body mounted on the one side in the axial direction of the drive shaft 23. The sliding contact surface of the 30 guide portions 32 is in sliding contact with the inner side surface of the drive roller guide rail 26, and further movement of the step unit 3 on one side in the width direction is prevented.

  At the time of maintenance inspection, the fixing of the drive shaft 23 to the frame 20 is released, a plurality of continuous steps are removed, and the man conveyor 1 is operated to perform maintenance inspection work. At this time, in the region where the step is removed, the drive shaft 23 remains connected to the drive roller 24, so even if the operation is performed with some steps removed, in the region where the steps are removed. The movement of the driving roller 24 in the width direction is restricted.

  In the first embodiment, the guide body 30 is attached to the drive shaft 23 so as to have a minute gap between the sliding contact surface of the guide portion 32 and the inner side surface of the drive roller guide rail 26. Therefore, when a force that causes displacement in the width direction acts on the step unit 3 and the step unit 3 slightly moves in the width direction, the sliding contact surface of the guide portion 32 contacts the inner side surface of the drive roller guide rail 26, The movement of the step unit 3 in the width direction is prevented. Thus, since the movement of the step unit 3 in the width direction is restricted, the man conveyor 1 capable of stable running can be realized.

Further, since the guide body 30 is fastened and fixed to the drive shaft 23, the mounting position of the guide body 30 can be adjusted to an appropriate position according to the centering state of the drive roller guide rail 26.
Furthermore, even if the operation is performed with some steps removed, the movement of the drive roller 24 in the width direction in the region from which the steps are removed is restricted, so that the step chain 17 can travel stably. Maintenance work efficiency is improved.

  Next, an operation method at the time of maintenance and inspection of the existing man conveyor using the guide body 30 will be described. In addition, the existing man conveyor shall be provided with the step apparatus of patent document 1, for example.

  At the time of maintenance and inspection of the conventional man conveyor, first, a plurality of continuous steps are removed. Next, with respect to each of the drive shafts 23 from which the steps have been removed, the boss portions 31 are fitted to both ends of the drive shaft 23 so as to be fitted, and the sliding contact surfaces of the guide portions 32 and the inner side surfaces of the drive roller guide rails 26 are mounted. The drive shaft 23 is fastened by the fixing bolt 34 screwed to the female screw portion 31 a formed in the boss portion 31, and the guide body 30 is attached. Next, the man conveyor is operated and maintenance inspection is performed.

  As described above, since the movement in the width direction of the drive roller 24 in the region where the step is removed is restricted, it occurs at the contact portion between the guide shoe and the skirt guard panel in the step before and after the region where the step is removed. The increase in the frictional force is suppressed, and stable running is performed. Therefore, the work efficiency of maintenance and inspection can be improved by using this guide body 30 also in the existing man conveyor.

  In the first embodiment, although not shown, a packing as a closing member is interposed between the boss portion 31 and the drive shaft 23 so as to close the gap between the boss portion 31 and the drive shaft 23. May be. In this case, the mechanical oil applied to the step chain 17 is prevented from leaking to the frame 20 side through the drive shaft 23, and the situation where the step unit 3 is contaminated with oil is avoided.

  In the first embodiment, although not shown, a low friction material having a smaller friction coefficient than that of the guide portion 32, for example, Teflon (registered trademark) may be attached to the sliding contact surface of the guide portion 32. As a result, the frictional force generated between the guide portion 32 and the inner side surface of the drive roller guide rail 26 is reduced, so that the step chain 17 can travel more stably.

In the first embodiment, the guide body 30 is attached to the drive shaft 23 so as to have a minute gap between the sliding contact surface of the guide portion 32 and the inner side surface of the drive roller guide rail 26. The guide body 30 may be attached to the drive shaft 23 so that the sliding contact surface of the guide portion 32 contacts the inner side surface of the drive roller guide rail 26.
In the first embodiment, the guide portion 32 is connected to the boss portion 31 by the disk 33. However, the guide portion 32 may be connected to the boss portion 31 using a spoke as the connection portion.

Embodiment 2. FIG.
FIG. 6 is a cross-sectional view of an essential part for explaining a mounting state of the step guide device in the man conveyor according to Embodiment 2 of the present invention.

In FIG. 6, the guide body 30 is provided at the extended portion of the drive shaft 23 from the drive roller 24 so as to have a minute gap between the sliding surface of the guide portion 32 and the outer side surface of the drive roller guide rail 26. It is installed.
Other configurations are the same as those in the first embodiment.

  Also in the second embodiment, the guide body 30 is attached to the drive shaft 23 so as to have a minute gap between the sliding contact surface of the guide portion 32 and the outer side surface of the drive roller guide rail 26. Therefore, when a force that causes displacement in the width direction acts on the step unit 3 and the step unit 3 moves slightly in the width direction, the sliding contact surface of the guide portion 32 contacts the outer side surface of the drive roller guide rail 26, The movement of the step unit 3 in the width direction is prevented. Therefore, since the movement of the step unit 3 in the width direction is restricted, the man conveyor 1 capable of stable traveling can be realized.

Further, since the guide body 30 is fastened and fixed to the drive shaft 23, the mounting position of the guide body 30 can be adjusted to an appropriate position according to the centering state of the drive roller guide rail 26.
Furthermore, even if the vehicle is operated with some steps removed, the movement in the width direction of the drive roller 24 in the region from which the steps are removed is restricted, so that stable running is performed and the work efficiency of maintenance and inspection is improved. Is increased.

Embodiment 3 FIG.
7 is a view for explaining the configuration of a step guide device in a man conveyor according to Embodiment 3 of the present invention. FIG. 7 (a) is a side view, FIG. 7 (b) is a front view, and FIG. (C) is a rear view.

  In FIG. 7, the guide body 40 includes a first guide body 41 and a second guide body 42 that are divided into two by a plane including the axis. The first guide body 41 and the second guide body 42 are each a semi-cylindrical boss portion 43 and a semicircular semi-ring-shaped guide portion 44 that is disposed coaxially with the boss portion 43 and has one end surface as a sliding contact surface. And a semicircular disk 45 as a connecting part for connecting and integrating the boss part 43 and the guide part 44, and a flange part 46 projecting from the other surface of the disk 45. Further, a female screw portion 47 is formed in the boss portion 43 and a through hole 49 is formed in the flange portion 46.

  Here, in order to attach the guide body 40 to the drive shaft 23, first, the drive shaft 23 is accommodated in the boss portion 43 and the first guide body 41 and the second guide body 42 so that the flange portions 46 face each other. And match. Next, the fixing bolt 50 is passed through the through hole 49, the flange portions 46 are fastened together by the fixing bolt 50 and the nut 51, and the first guide body 41 and the second guide body 42 are integrated. Next, the boss is positioned by a fixing bolt 48 which is positioned so as to have a minute gap between the sliding contact surface of the guide portion 44 connected in a ring shape and the inner side surface of the drive roller guide rail 26 and screwed to the female screw portion 47. The part 43 is fastened to the drive shaft 23. Thereby, the guide body 40 is attached to the drive shaft 23. The female thread portion 47 and the fixing bolt 48 constitute first fastening means, and the fixing bolt 50 and the nut 51 constitute second fastening means.

  Also in the third embodiment, the guide body 40 is fastened and fixed to the drive shaft 23 so as to have a minute gap between the sliding contact surface of the guide portion 44 and the inner side surface of the drive roller guide rail 26. Therefore, the same effect as in the first embodiment can be obtained.

  According to the third embodiment, since the guide body 40 is divided into the first guide body 41 and the second guide body 42, the guide body 40 is attached to the drive shaft 23 with the drive roller 24 mounted. Easy to install. Therefore, in the existing man conveyor, after removing the step, the guide body 40 can be easily attached to the drive shaft 23 to which the drive roller 24 is attached. Therefore, even in the existing man conveyor, by installing the guide body 40 on the drive shaft 23 from which the step has been removed during maintenance inspection, the existing man conveyor can be stably operated, and the maintenance inspection work efficiency is improved. Is done.

In addition, although each said embodiment demonstrated as what applies to an escalator, even if it applies this invention to man conveyors other than an escalator, for example, a moving walk, the same effect is acquired.
In each of the above embodiments, the guide portion is formed in a circular ring shape. However, the guide portion is not necessarily limited to a circular shape, and the sliding contact surface is driven regardless of the rotation position of the guide body. A polygonal ring shape may be used as long as it can always slide in contact with the side surface of the roller guide rail.

Further, in each of the above embodiments, the first fastening means is constituted by the female screw part formed on the boss part and the fixing bolt. However, if the first fastening means can fasten and fix the boss part to the drive shaft, Well, it is not limited to this configuration.
In the second embodiment, the second fastening means is constituted by the fixing bolt and the nut, but the second fastening means fastens and fixes the flange portions of the first guide body and the second guide body. What is necessary is just and it is not limited to this structure.

  3 step unit, 17 step chain, 18 link, 24 drive roller, 26 drive roller guide rail, 20 frame, 21 step plate, 22 riser, 23 drive shaft, 30 guide body (step guide device), 31 boss part, 31a Female thread part (first fastening means), 32 guide part, 33 disc (connecting part), 34 fixing bolt (first fastening means), 40 guide body (step guide device), 41 first guide body, 42 Second guide body, 43 Boss part, 44 Guide part, 45 Disc (connection part), 46 Flange part, 47 Female thread part (first fastening means), 48 Fixing bolt (first fastening means), 50 Fixing bolt ( (Second fastening means), 51 nut (second fastening means).

Claims (5)

Each of the links is configured to be endless, and a drive roller is rotatably disposed at each of the link seams, and is disposed relative to two sideways that are separated by a predetermined distance in the horizontal direction. A pair of step chains that are installed and circulate synchronously;
A pair of drive roller guide rails that extend along the circulation travel direction of the pair of step chains, and that the drive roller travels with the circulation travel of the pair of step chains,
Each of the driving rollers includes a step composed of a tread plate and a riser fixed to a frame, and a drive shaft detachably attached to the frame, and the drive shaft is opposed to the pair of step chains at both ends of the drive shaft. And a step unit that circulates in conjunction with the circulation of the pair of step chains, and that the step is removed from the drive shaft during maintenance and inspection. Conveyor step guide device,
A boss part fitted in an outer fitting state on an end part of the drive shaft;
First fastening means for fastening and fixing the boss portion to the drive shaft;
A ring-shaped guide portion that is arranged coaxially with the boss portion and has one end surface as a sliding contact surface;
A connecting portion for connecting and integrating the boss portion and the guide portion;
The guide portion is fitted to the boss portion, which is fitted to the end portion of the drive shaft, by being fastened and fixed to the drive shaft by the first fastening means. A step guide device for a man conveyor, characterized in that the sliding contact surface slides on the side surface of the drive roller guide rail to guide the travel of the drive roller. The boss part and the guide part connected and integrated by the connection part are divided into a first guide body and a second guide body on a plane including the axis of the boss part,
2. A step guide device for a man conveyor according to claim 1, further comprising second fastening means for fastening and integrating the first guide body and the second guide body.   3. The man according to claim 1, further comprising a closing member that closes a gap between the boss portion fitted to the end portion of the drive shaft in an externally fitted state and the drive shaft. Conveyor step guide device. Each of the links is configured to be endless, and a drive roller is rotatably disposed at each of the link seams, and is disposed relative to two sideways that are separated by a predetermined distance in the horizontal direction. A pair of step chains that are installed and circulate synchronously;
A pair of drive roller guide rails that extend along the circulation travel direction of the pair of step chains, and that the drive roller travels with the circulation travel of the pair of step chains,
Each of the driving rollers includes a step composed of a tread plate and a riser fixed to a frame, and a drive shaft detachably attached to the frame, and the drive shaft is opposed to the pair of step chains at both ends of the drive shaft. Connected to the endlessly, and circulates in conjunction with the circulating travel of the pair of step chain, and during maintenance inspection, the step is a step unit removed from the drive shaft ,
A step guide device according to any one of claims 1 to 3,
In the step guide device, the sliding contact surfaces of the guide portions face each other at both ends of each of the drive shafts, or the sliding contact surfaces of the guide portions face outward in the axial direction of the drive shaft. And a sliding contact surface of the guide portion is in contact with a side surface of the drive roller guide rail or attached so as to have a minute gap. Each of the links is configured to be endless, and a drive roller is rotatably disposed at each of the link seams, and is disposed relative to two sideways that are separated by a predetermined distance in the horizontal direction. A pair of step chains that are installed and circulate synchronously;
A pair of drive roller guide rails that extend along the circulation travel direction of the pair of step chains, and that the drive roller travels with the circulation travel of the pair of step chains,
Each of the driving rollers includes a step composed of a tread plate and a riser fixed to a frame, and a drive shaft detachably attached to the frame, and the drive shaft is opposed to the pair of step chains at both ends of the drive shaft. A step unit that is connected endlessly and is connected in an endless manner and circulates in conjunction with the circulation of the pair of step chains, and an operation method at the time of maintenance and inspection of a man conveyor,
In a plurality of the step units that are continuous in the circulating travel direction, after releasing the fixing of the drive shaft and removing the step, prior to operating the man conveyor,
The sliding contact surfaces of the guide portions face each other at both ends of each of the drive shafts from which the steps have been removed, or the sliding contact surfaces of the guide portions face outward in the axial direction of the drive shafts. The step guide device according to any one of claims 1 to 3, wherein the sliding contact surface of the guide portion is in contact with a side surface of the drive roller guide rail or has a minute gap. The operation method at the time of the maintenance check of the man conveyor characterized by having a process.

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