JPH11209058A - Maintenance working device for escalator and maintenance working method using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform safe and efficient maintenance work if the floor level of a building in which an escalator is installed is high. SOLUTION: A lower-side upper leg 17 and a lower-side lower leg 18 having jacks, respectively, are arranged at positions subjected to be driven by a driving machine for an escalator and an overturning preventing mechanism is connected to a rear wheel rail to be supported. When a maintenance working device located in proximity to a lower truss 8 or to an upper truss 5 is increased in moving distance with the decrease of a level difference between footsteps 11, level adjusting operation is performed by the jacks provided on a lower support 26 so that the escalator can be driven to move as the maintenance working device in an assembled condition remains mounted on the escalator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a maintenance work device for an escalator and a maintenance work method using the same.

[0002]

2. Description of the Related Art In general, when another escalator is installed above an escalator so as to correspond to the escalator, a lighting device for illuminating the escalator located below is provided on the bottom of the escalator located above. When equipment such as this lighting equipment which requires cleaning or maintenance work is installed, it is necessary to provide a maintenance work device such as a scaffold for performing this kind of work on an escalator located below.

Conventional maintenance work apparatuses of this type are disclosed in, for example, Japanese Patent Application Laid-Open Nos. 8-143260 and 8-63260.
As described in JP-A--19440, there is known an escalator in which a stepladder is provided on a step of a escalator, and an escalator is provided with a work vehicle which moves up and down in synchronization with traveling of the step.

[0004]

However, in the conventional maintenance work device, when the interval between the upper and lower escalators facing each other, that is, when the floor height of the building where the escalator is installed is large, for example, when there is about 8 m, Even if a stepladder or work cart is used, the height of the lighting equipment etc. installed on the bottom of the escalator located at the top is not enough, making it difficult to perform maintenance work. There was also a danger of falling if you installed

An object of the present invention is to provide an escalator maintenance work device and a escalator maintenance work apparatus capable of performing maintenance work safely and efficiently even when the floor of a building in which the escalator is installed is large. An object of the present invention is to provide a maintenance work method using the same.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides maintenance of an escalator having a drive for driving a plurality of steps connected endlessly and an upper escalator truss located above the drive. In the working device, the work floor is supported on a lower support portion provided with a height adjustment mechanism on at least one lower leg, and a fall prevention mechanism for preventing the work floor from falling over is connected to the rear wheel rail. It is characterized by the following.

The maintenance device for the escalator according to the present invention can maintain a stable state by the tip-over prevention mechanism even when assembled to a high place near the bottom surface of the upper escalator truss as described above. By operating the work floor, the work floor can be held horizontally and maintenance work such as replacement of the lighting lamp can be performed safely.

In order to achieve the above object, the present invention provides maintenance using an escalator maintenance work device having a driving device for driving a plurality of steps connected endlessly and an upper escalator truss located above the driving device. In the working method,
On a portion driven by the driving machine, a lower support portion provided with a height adjustment mechanism on at least one of the lower legs is arranged, and a work floor is supported on the lower support portion to carry out the maintenance work device. When moving the maintenance work device by driving the part, the height adjustment operation is performed by the height adjustment mechanism at a position where the step of the step decreases and the moving distance increases. Features.

In the maintenance work method using the maintenance work device according to the present invention, as described above, the maintenance work device is located near the lower truss and the upper truss at a position where the step of the step is reduced and the moving distance is increased. In order to perform a height adjustment operation by a height adjustment mechanism such as a jack provided on at least one lower leg of the lower support portion, drive and move the escalator while the maintenance work device in the assembled state is mounted on the escalator. This makes it possible to perform the work efficiently without having to disassemble or reassemble the maintenance work device for maintenance work at different positions.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an escalator according to an embodiment of the present invention, in which an escalator maintenance device is installed.

The main components of the escalator include a gantry framed by supporting all components of the escalator, and the frame is made of steel, and the like. 5, a driving gear 3 and a main driving device 4 housed in a lower truss 8, a step chain gear 7 mounted on a lower truss 8, and an endlessly connected driving machine 3 and a main driving device in the lower escalator truss 2. The vehicle includes a step 11 driven by the device 4 and a moving handrail 13 disposed above the lower escalator truss 2 and driven by the drive unit 3 and the main drive unit 4.

The drive unit 3 drives the main drive unit 4 via a drive chain 9, and the main drive unit 4
0 and the handrail chain 1
The moving handrail 13 is driven in synchronization with the step 11 via the second handrail 2. Step chain gear 7, Step chain expanding device 14
Is designed so that the step chain 10 is driven as prescribed without sagging in the middle, and the handrail wheel 15 is designed so that the moving handrail 13 is driven as prescribed without sagging in the middle. An escalator 29 is provided above the escalator 1 so as to face the lower escalator truss 2 and has an upper escalator truss 28 on the bottom surface of which an illumination light 27 for illuminating the escalator 1 is attached.

In FIG. 4, the step 11 is supported by a front wheel 210 having a driving roller 20 rotatably mounted on a driving roller shaft 21 and a rear wheel 211 installed at an interval therefrom. It can move on the rear wheel rail 214. The front wheel rail 213 and the rear wheel rail 214 guide the steps 11 horizontally at the entrances 215 and 216 near the entrances and exits, and guide the steps 11 at the intermediate inclined portion 217, and support the passenger load and the own weight of the steps 11 on the outbound side, and return side. Then, the own weight of the steps 11 is supported. Further, particularly in the upper R portion 218, the tension of the step chain 10 is increased, and thus the normal force generated by this tension is also supported. Therefore, the truss 2 is mounted by a known method such as a bracket (not shown).
It is fixed to etc.

Next, a maintenance device for the escalator installed on the escalator will be described.

This maintenance work device is installed on the escalator 1 and has a lower support portion 26 having a lower upper leg portion 17 and a lower lower leg portion 18, and an upper escalator truss supported on the upper portion of the lower support portion 26. Assembled scaffold 16 having a building frame 19 assembled to a height near the bottom surface of 28
And a work floor 50 that is placed and fixed on the top of the assembly scaffold 16 so as to serve as a work scaffold for the worker 20, and has handrails 107 for preventing falls on all sides. The assembling scaffold 16 has a lifting ladder 2 used by the worker 20 from the lower support 26 to the work floor 50.
3 are provided.

FIGS. 2 and 3 are an enlarged view of the lower upper leg 17 and an enlarged view of the lower lower leg 18 of the escalator maintenance work device shown in FIG.

The lower upper leg 17 of the lower support 26 has the step 11 removed, and is connected to the left and right step chains 10 as shown in FIG. 2 and connected to a drive roller shaft 21 having drive rollers 20 at both ends. Shaft coupling mechanism 32 and drive roller 2
Overturn prevention mechanism 2 connected to rear wheel rail 214 supporting
20, a jack 31 which is a height adjusting mechanism which is supported by the shaft connecting mechanism 32 at the lower end thereof and is prevented from falling over by the overturn preventing mechanism 220 so as to be expandable and contractible, and an upper end of the jack 31 and a lower end of the building frame 19. Connected body 30 connecting
And is configured. The overturn preventing mechanism 220 prevents the connecting body 30 from overturning with its tip 222 in contact with the lower surface 221 of the rear wheel rail 214, and can loosen this connection and remove it when necessary. Make up. On the other hand, as shown in FIG. 3, the lower lower leg 103 has a wheel 36 on which the upper surface of the tread plate 37 of the step 11 is rollably disposed, and a height configured to support the wheel 36 at its lower end and extend and contract. Jack 34 as an adjustment mechanism
, A connecting body 33 connecting the upper end of the jack 34 and the lower end of the building frame 19, and a restraining mechanism 35 for restraining the rotation of the wheels 36 according to the operation.

Next, a maintenance work method using the above-described maintenance work device will be described with reference to an example of a work of replacing the illumination lamp 27.

First, a part of the step 11 of the escalator 1 is removed from the drive roller shaft 21 by a known method. next,
The lower upper leg 17 is connected to the drive roller shaft 21 from the opening from which the steps 11 are removed as described above with reference to FIG. Further, a fall prevention mechanism 220 is connected to the rear wheel rail 214. Further, the lower lower leg 18 is placed on a step located below the removed step with the wheel 36 restrained by operating the restraining mechanism 35 of the lower lower leg 18 shown in FIG. Deploy. In this state, the height adjustment mechanisms of the jacks 121 and 131 of the lower upper leg 17 and the lower lower leg 18 are operated so that the lower support 26 is horizontal.

Next, the building frame 19, the ladder 23 and the like are assembled, and the assembling scaffold 16 is assembled to a required height, that is, a height position near the lighting lamp 27 provided on the bottom surface of the upper escalator truss 28.

In such a supported state, the worker 20 climbs up to the work floor 50 by using the ladder 23, and
7 is performed, and when this operation is completed, the user goes down the ladder 23. Further, when there is an illuminator 27 to be replaced with an escalator at another position, the overturn prevention mechanism 220 is loosened, and further, the restraint of the wheel 36 by the restraint mechanism 35 is released, and the driving machine 3 performs low-speed driving or inching. The main drive unit 4 is driven at a low speed by another low-speed drive unit or a manual drive unit (not shown) which uses the drive or the drive unit 3 instead of the power, and moves the assembly scaffold 16 to the next work position for replacing the illumination lamp 27. .

At this time, the assembly scaffold 16 is moved to the next replacement work position of the illumination lamp 27 by the maintenance work method using the escalator maintenance work device according to one embodiment of the present invention as described below.

Since the assembling scaffold 16 is moved by driving the escalator at a low speed, the jacks 31, 3 of the lower upper leg 17 and the lower lower leg 18 are moved at a predetermined moving position.
It is necessary to operate the height adjustment of 4 so that the lower support portion 26 is always substantially horizontal. That is, when the assembling scaffold 16 is located near the lower truss 8 or near the upper truss 5 and the step of the step 11 decreases and the moving distance increases, the release of the restraining mechanism 35 of the wheel 36 and the jack 31, Although the height adjustment of the step 34 is necessary, it is unnecessary in other intermediate portions as long as the step and the moving distance of the step 11 do not change depending on the position.

That is, when the escalator 1 is driven by the main drive unit 4 as described above, the maintenance work device installed on the escalator 1 also travels synchronously and reaches the vicinity of the upper truss 5 or the lower truss 8. When it comes, the step of the steps 11 decreases from h1 to h2 as shown in FIG.
Height adjustment by 1, 34 is required. Similarly, when the step becomes smaller, the lower lower leg 18 receives a force to move the distance from the end of the step 11 from L1 to L2 as shown in the figure, so that the restraining mechanism 35 is released to release the wheel. 36 is kept in a movable state. Therefore,
In the vicinity of the upper and lower trusses 5 and 8 where the steps of the steps 11 change, the escalator 1 can be driven to quickly move the maintenance work device without falling down,
Maintenance work for replacing the plurality of illumination lamps 27 can be performed efficiently. Next, when the maintenance work device is moved to a predetermined position, the fall prevention mechanism 220 is connected to the rear wheel rail 214 again by the above-described method to prevent the fall and prevent the worker 20 from falling.
Performs the replacement work of the illumination lamp 27 by repeating the same procedure as that described above.

When the replacement of the lamp at the expected position is completed, the lower support 26, the assembling scaffold 16 and the work floor 50 are disassembled, and the escalator 1 is returned to the original state, thus completing the entire operation.

As described above, in the maintenance work apparatus according to the present embodiment, the lower upper leg 17 is connected to the drive roller shaft 21 and the overturn prevention mechanism 220 is connected to the front wheel rail 214. Even when the assembling scaffold 16 is assembled to a nearby high place, a stable state can be maintained by the connection of the lower upper leg 17 and the fall prevention mechanism 220, and maintenance work such as replacement of the illumination lamp 27 can be performed safely. Can be. Further, in the maintenance work method using the maintenance work device according to the present embodiment, when the maintenance work device is located near the lower truss 8 or near the upper truss 5, the step of the step 11 decreases and the moving distance increases. A jack 31 provided on each of the lower upper leg 17 and the lower lower leg 18 of the lower support 26,
34, the escalator can be driven and moved while the maintenance work device in the assembled state is mounted on the escalator, so that the maintenance work can be performed at different positions. The work can be performed efficiently without the necessity of disassembling or reassembling the working device.

FIG. 7 is a side view showing a maintenance work device according to another embodiment of the present invention.

In the above embodiment, the assembled scaffold 16 is assembled between the lower support 26 and the work floor 50. In this embodiment, a ladder whose axial length can be adjusted in the height direction instead of the assembled scaffold 16 is used. 23, the work floor 50 and the lower support 26
Are connected by a ladder 23 having a telescopic part 46 by a telescopic mechanism or the like by a known technique such as a rope type (not shown) to support the work floor 50. With the maintenance work device having such a configuration, the height adjustment can be made easier, the weight can be reduced, and the handleability can be improved.

FIG. 8 is a side view showing a maintenance work device according to still another embodiment of the present invention.

There is a telescopic part 46 between the work floor 50 and the lower supporting part 26 by a telescopic mechanism using hydraulic or hydraulic pressure, and the work floor used when the work floor 50 is at a low position while the telescopic part 46 is in a contracted state. It has a ladder 23 for raising and lowering to 50. In this example, when the position of the device is moved,
6 is in a contracted state, and there is no worker 20 on the work floor 50. The extension / contraction operation is performed by the worker 20 on the work floor 50 or another worker (not shown), and the degree of extension / contraction can be selected. With the maintenance work device having such a configuration, the height adjustment can be further facilitated, the weight can be reduced, and the handleability can be further improved.

In each embodiment, the lower upper leg portion 17 is provided.
The same effect can be obtained even if the configuration of the lower lower leg 18 is changed. Alternatively, a jack may be provided on only one of the lower upper leg 17 and the lower lower leg 18.
Also, when the illumination above the escalator 1 is a general ceiling illumination provided on a horizontal ceiling, the illumination lamp 27 described above is also used.
The height of the assembling scaffold 16 or the ladder 23 can be reset if necessary during the procedure of the replacement work.

[0033]

As described above, the maintenance work device for an escalator according to the present invention is provided with a jack on at least one of the lower legs, arranged on a portion driven by a driving machine, and connected to a rear wheel rail. Since the fall prevention mechanism prevents the fall, the stable state can be maintained even when assembled to a high place near the bottom of the upper escalator truss, and maintenance work such as replacement of the lamp can be performed safely. .

Further, the maintenance work method using the maintenance work device according to the present invention is characterized in that the maintenance work device is supported downward at a position where the step difference is reduced and the moving distance is increased, such as near the lower truss and the upper truss. Since the height adjustment operation is performed by a height adjustment mechanism such as a jack provided on at least one of the lower legs of the unit, the escalator is driven and moved while the maintenance work device in the assembled state is mounted on the escalator. This makes it possible to perform the work efficiently without having to disassemble or reassemble the maintenance work device for maintenance work at different positions.

[Brief description of the drawings]

FIG. 1 is a side view showing an escalator maintenance work device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a lower upper leg which is a main part of the maintenance work device shown in FIG.

FIG. 3 is an enlarged view of a lower lower leg which is a main part of the maintenance work device shown in FIG. 1;

FIG. 4 is an explanatory diagram of a relationship between a step of an escalator and a rail.

FIG. 5 is an explanatory diagram of a relationship between a driving roller of an escalator and a rail.

FIG. 6 is a partial side view of an escalator adopting a maintenance work method using an escalator maintenance work device according to an embodiment of the present invention.

FIG. 7 is a side view showing a maintenance work device according to another embodiment of the present invention.

FIG. 8 is a side view showing a maintenance work device according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Escalator 5 Upper truss 8 Lower truss 11 Step 16 Assembling scaffold 17 Lower upper leg 18 Lower lower leg 21 Drive roller shaft 220 Overturn prevention mechanism 26 Lower support 27 Lighting 29 Upper escalator truss 31, 34 Jack

Claims (6)

[Claims] 1. An escalator maintenance work device having a drive device for driving a plurality of steps connected endlessly and an upper escalator truss located above the drive device, wherein at least one of the lower legs has a height adjusting mechanism. An escalator maintenance work device, characterized in that the work floor is supported on a lower support portion provided with a fin, and a fall prevention mechanism for preventing the work floor from falling over is connected to a rear wheel rail. 2. The maintenance work device for an escalator according to claim 1, wherein the lower supporting portion is disposed on a portion driven by the driving device. 3. Each of the steps has a drive roller at both ends of a drive roller shaft, and one of the lower support portions is supported by the drive roller shaft at a position other than the step, and The maintenance work device for an escalator according to claim 1, wherein the prevention mechanism is connectable to and detachable from the rear wheel rail, and the other of the lower support portions is supported on the step. 4. The maintenance work device for an escalator according to claim 1, further comprising a telescopic portion having a height for raising and lowering the position of the work floor between the lower support portion and the work floor. 5. A maintenance work method using an escalator maintenance work device having a drive device for driving a plurality of steps connected endlessly and an upper escalator truss located above the drive device, wherein the drive device is driven by the drive device. A lower support portion provided with a height adjusting mechanism on at least one of the lower legs on the portion to be formed, and supporting the work floor on the lower support portion to constitute the maintenance work device; An escalator wherein the height adjustment operation is performed by the height adjustment mechanism at a position where the step of the step decreases and the movement distance increases when the maintenance work device is moved by driving the escalator. Maintenance work method using the maintenance work equipment. 6. A fall prevention mechanism connected to a rear wheel rail is provided to prevent the maintenance work device from overturning. After the fall prevention mechanism is removed, the part is driven to move the maintenance work device. The maintenance work method using the maintenance work device of the escalator according to claim 5, wherein