JP3357268B2 - Escalator maintenance work equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to the maintenance equipment of the escalator.

[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

[0005] It is an object of the present invention, escalator safely maintenance work even if there is a large floor height of a building is installed, and maintenance equipment escalator which make it possible to efficiently perform Is to provide.

[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 working floor is supported on a lower supporting portion provided with a height adjusting mechanism on at least one lower leg, and a fall prevention cable for preventing the working floor from falling is connected to a nearby strength member. Then
Each of the steps is provided with a drive roller at both ends of the drive roller shaft.
And one of the lower support portions excludes the step.
Supported by the drive roller shaft at the position
The other is characterized by being supported on the step .

The escalator maintenance work device according to the present invention can maintain a stable state by the fall prevention cable even when assembled to a high place near the bottom surface of the upper escalator truss as described above, and furthermore, the height adjusting mechanism is provided. 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.

[0008]

[0009]

[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 a maintenance work device for the escalator is installed. As a main component of the escalator, there is a gantry framed by supporting all components of the escalator with a shaped steel, etc., an upper truss 5, a middle truss 6, and a lower truss 8.
Lower escalator truss 2 and upper truss 5
And the main drive unit 4 housed in the lower truss 8, the step chain gear 7 provided in the lower truss 8, and the endlessly connected drive unit 3 and the main drive unit in the lower escalator truss 2. 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 having an upper escalator truss 28 is provided above the escalator 1 so as to face the lower escalator truss 2 and has a bottom surface to which an illumination light 27 for illuminating the escalator 1 is attached.

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 upper leg 1.
And an assembling scaffold 16 having a lower frame 26 having a lower support leg 7 and a lower leg 18, and a building frame 19 supported on an upper portion of the lower support 26 and assembled to a height near the bottom surface of an upper escalator truss 28. A work floor 21 which is placed and fixed on the top of the assembly scaffold 16 so as to be a work scaffold for the worker 20 and has handrails 107 for preventing falling on all sides thereof;
An appropriate position such as a lower portion of the work floor 21 is connected to the lower escalator truss 2 and a fall prevention line 24 for preventing the assembled scaffold 16 from falling over is provided. The assembling scaffold 16 is provided with an elevating ladder 23 used by the worker 20 from the lower support portion 26 to the work floor 21.

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 portion 17 of the lower support portion 26 has a shaft connecting mechanism in which the step 11 is removed, and the shaft 11 is connected to the left and right step chains 10 and connected to a drive roller shaft 21 having drive rollers 20 at both ends as shown in FIG. And a jack 31 serving as a height adjusting mechanism configured to be able to extend and contract while supporting the lower end of the shaft connecting mechanism 32.
And a connecting body 30 connecting the upper end of the jack 31 and the lower end of the building frame 19. 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 the lower end thereof and extend and contract. It comprises a 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. ing.

Next, a maintenance work method using the above-described maintenance work device will be described by taking 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, step 11
The lower upper leg portion 17 is connected to the drive roller shaft 21 from the opening from which is removed as described above with reference to FIG. 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 illumination lamp 27 provided on the bottom surface of the upper escalator truss 28, thereby preventing the fall prevention cable. 24 and 25 are connected to structures such as the upper truss 5 and the lower truss 8.

This connection is made from the lower support 26 to the work floor 2.
The upper truss 5 and the lower truss 8 or the strength members of the building near the truss 5 and the lower truss 8 are connected by the fall prevention cables 24 and 25. For example, as shown in FIG. 4 which is a front view, between the left side 39 of the work floor 21 and the left side 41 of the lower truss 8 by the fall prevention cable 25A, and between the right side 40 of the work floor 21 and the right side 42 of the lower truss 8. Are connected by a fall prevention cable 25B. Although not shown, the work floor 21 corresponding to the back of FIG.
The two ends of the upper truss 5 are also provided on both ends of the
4A and 24B.

Further, in order to prevent the assembly scaffold 16 from falling, the fall prevention lines 25A and 25B may be connected as shown in FIG. That is, the part between the left side 39 of the work floor 21 and the right side 42 of the lower truss 8 is connected by the fall prevention line 25A, and the part between the right side 40 of the work floor 21 and the left side 41 of the lower truss 8 is connected by the fall prevention line 25B. X for 24A, 24B
It is arranged in a letter shape. Although not shown, both ends of the work floor 21 corresponding to the back of FIG.
Are connected by X-shaped fall prevention cables 24A and 24B. Such X-shaped fall prevention cables 24A, 24B
According to FIG. 4, the assembly scaffold 1 is more stable than the case of FIG.
6 can be supported.

In the state of being supported by the fall prevention cables 24 and 25, the worker 20 uses the ladder 23 to work on the work floor 2.
After climbing up to 1 and replacing the lamp 27, the operator descends the ladder 23 when this operation is completed. Further, when there is an illumination lamp 27 to be replaced with an escalator at another position, the fall prevention cables 24 and 25 are loosened, and
5, the main drive unit 4 is driven by a low-speed drive or inching drive by the drive unit 3 or by another low-speed drive unit using a power source (not shown) or a manual drive unit (not shown) instead of the drive unit 3. Driving at low speed, next lighting 2
The assembly scaffold 16 is moved to the replacement work position 7.

At this time, the assembly scaffold 16 is moved to the next work position for replacing the illumination lamp 27 by a maintenance work method using an escalator maintenance work device according to an embodiment of the present invention as described below. . Since the assembly scaffold 16 is moved by driving the escalator at low speed, the lower upper leg 17 and the lower lower leg 1 are moved at a predetermined moving position.
It is necessary to operate the height adjustment of the jacks 31, 34 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 11 of the step 11 decreases and the moving distance increases, the restraining mechanism 3 of the wheel 36
5 and the height adjustment of the jacks 31 and 34 are necessary, but 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.
The 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 cables 24 and 25 are connected to the strength member such as the truss again by the above-described method to prevent the fall, and the worker 20 is equivalent to the above case. Repeat the procedure of
Perform replacement work.

When the replacement of the lamp at the expected position is completed, the lower support 26, the assembling scaffold 16 and the work floor 21 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 portion 17 is connected to the drive roller shaft 21 and the plurality of fall prevention cables 24 and 25 extend from the lower support portion 26 to the work floor 21. Since the parts and the strength members such as the trusses 5 and 8 are connected to each other, even when the assembling scaffold 16 is assembled to a high place near the bottom surface of the upper escalator truss 28, the lower upper leg 17 and the fall prevention cables 24 and 25 are provided. , A stable state can be maintained, and maintenance work such as replacement of the illumination lamp 27 can be performed safely.
Further, in the maintenance work method using the maintenance work device according to the present embodiment, the maintenance work device is located near the lower truss 8 or near the upper truss 5 so that the step of the step 11 decreases and the moving distance increases. In this case, since the height adjustment operation is performed by the jacks 31 and 34 provided on the lower upper leg 17 and the lower lower leg 18 of the lower support 26, the maintenance work device in the assembled state is mounted on the escalator. The escalator can be driven and moved, and the work can be efficiently performed without having to disassemble or reassemble the maintenance work device for maintenance work at different positions.

FIG. 7 is a longitudinal sectional front view showing a main part of a maintenance work device according to another embodiment of the present invention. In the above-described embodiment, the lower portion of the lower upper leg portion 17 is connected to the drive roller shaft 21 from which the steps are removed as shown in FIG. 2. In the case where it can be expected, the fixing structure is stopped as in the lower upper leg portion 45 shown in FIG. Therefore, according to the lower upper leg portion 45 having such a configuration, complicated operations such as removal of steps and connection to the drive roller shaft 21 and the complicated configuration required for the steps are omitted as in the previous embodiment. And work efficiency and cost can be reduced.

FIG. 8 is a side view showing a maintenance work device according to still another embodiment of the present invention. In the above embodiment, the assembly scaffold 1 is provided between the lower support 26 and the work floor 21.
In this embodiment, a ladder 23 whose axial length can be adjusted in the height direction is provided in place of the assembling scaffold 16, and a rope type (not shown) is provided between the work floor 21 and the lower support portion 26. The work floor 21 is connected by a ladder 23 having a telescopic part 46 formed by a telescopic mechanism or the like according to a well-known technique. 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.

In the embodiment shown in FIG. 8, the lower upper leg 45 described with reference to FIG. 7 can be used. In each embodiment, the lower upper leg 17 and the lower lower leg 1 are used.
The same effect can be obtained by replacing the configuration of FIG. Alternatively, a jack may be provided on only one of the lower upper leg 17 and the lower lower leg 18. Further, as a method of connecting the fall prevention lines 24 and 25 shown in FIGS. 4 and 5, another connection method may be adopted, or a different connection method may be used between the fall prevention line 24 and the fall prevention line 25. Also, in the case where the lighting above the escalator 1 is a general ceiling lighting provided on a horizontal ceiling, the assembling scaffold 16 or the ladder 2 may be provided as necessary during the above-described procedure for replacing the lighting lamp 27.
3 can be implemented by resetting the height.

[0026]

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, is disposed on a portion driven by a driving machine, and is connected to a strength member. Since the overturning is prevented by the preventive rope , a stable state can be maintained even when the escalator truss is assembled to a high place near the bottom surface of the upper escalator truss, and maintenance work such as replacement of a lamp can be performed safely.

[0027]

[Brief description of the drawings]

FIG. 1 is a side view showing a maintenance work device for an escalator 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 a front view showing a fall prevention line of the maintenance work device shown in FIG. 1;

FIG. 5 is a front view showing another connection configuration of the fall prevention cable of the maintenance work device shown in FIG. 1;

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

FIG. 7 is a vertical sectional view showing a lower upper leg which is a main part of 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 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 Work floor 24, 25 Fall prevention cable 26 Lower support 27 Lighting 29 Upper escalator truss 31, 34 Jack

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-29668 (JP, A) JP-A-6-278984 (JP, A) JP-B-63-56376 (JP, B1) (58) Field (Int.Cl. ⁷ , DB name) B66B 21/00-31/02

Claims (1)

(57) [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. The work floor is supported on the lower support part provided with a, and a fall prevention cable for preventing the work floor from tipping over is connected to a nearby strength member.
To, each footstep may have a driving roller at both ends of the roller shafts
And one of the lower support portions excludes the steps.
Position on the drive roller shaft, and
The escalator maintenance work device is supported on the steps .