JP2000053360A - Exchange timing judging method for handrail driving roller of passenger conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily detect exchange timing of a driving roller by comparing moving distances between a handrail and a step to judge movement delay of the handrail, and by judging the time when the movement delay exceeds a specified value as the exchange timing of the handrail driving roller. SOLUTION: For measuring a movement delay value L of a handrail 3, first a passenger conveyer 1 is stopped and a mark A is attached on a stepping surface of a step 2 based on a comb plate 11 at a lower doorway. Next, a mark B is attached on a rail surface of a part where a vertical line P passing the mark A crosses the handrail 3. Then, the passenger conveyer 1 is driven, and when the step 2 provided with the mark A approaches a comb plate 12 at an upper doorway, the passenger conveyer 1 is stopped. A mark Z is attached on a rail surface of a part where a vertical line Q that is adjacent to the comb plate 12 at the upper doorway and passes the mark A crosses the handrail 3. After that, moving distance L of each of marks Z, B is measured, and when this length L exceeds a specified value, a driving roller is exchanged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for determining the replacement timing of a handrail drive roller of a passenger conveyor for moving a handrail used for a passenger conveyor such as an escalator or a moving road.

[0002]

2. Description of the Related Art Conventionally, in a passenger conveyor, steps and a handrail must be moved at substantially the same speed.

[0003] The handrail moving mechanism is such that a handrail sprocket is directly connected to a stepping drive wheel housed in a machine room installed at the uppermost end of the truss or the like, and a chain is attached to the handrail sprocket. A handrail is sandwiched between a driving roller to be connected and a driven roller that rotates synchronously with the driving roller, and the handrail is moved by a frictional force according to the rotation of both rollers.

[0004] Therefore, the drive roller becomes worn when the handrail is repeatedly moved, and thus needs to be replaced.

[0005]

When the drive roller for a handrail is mounted on a passenger conveyor, the outer diameter of the drive roller cannot be measured, and the wear amount of the drive roller cannot be measured correctly. Therefore, in order to correctly measure the outside of the drive roller, it is necessary to remove the drive roller from the passenger conveyor. Therefore, there is a problem that it takes time to determine whether it is time to replace the handrail drive roller.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of determining the replacement time of a driving roller for a handrail of a passenger conveyor, which can easily and quickly know the replacement time of the driving roller.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to compare the travel distance of a handrail with the travel distance of a step and measure the amount of travel delay when a travel delay of the handrail occurs. If the amount of delay exceeds a specified value, it is achieved by determining that it is time to replace the handrail drive roller.

[0008]

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

In FIG. 1, a passenger conveyor 1 includes a number of steps 2 connected endlessly, and a handrail 3 located at a side of the steps 2 and moved in synchronization with the movement of the steps 2. ing.

As shown in FIG. 2, a driving mechanism 4 of the handrail 3 includes a sprocket 5 directly connected to a step driving wheel (not shown) provided in a machine room or the like.
Drive rollers 9, 9a, 9b, 9c whose rotation is transmitted by chains 6, 7, 8; and a plurality of driven rollers disposed opposite to the drive rollers 9, 9a, 9b, 9c. 10, 10a, 10b, and 10c. Driving rollers 9, 9a, 9b, 9c and driven roller 1
If the drive mechanism 4 is installed on the passenger conveyor with the handrail 3 sandwiched between the rails 0, 10a, 10b, and 10c, the handrail 3 frictionally synchronizes with the moving direction of the steps 2 in the same direction. Moved by force.

Next, the measurement of the movement delay amount L of the handrail 3 is performed in the following procedure.

(1) First, in FIG. 1, with the passenger conveyor 1 stopped, a first mark A is marked on the tread surface of the step 2 with a chalk or the like on the basis of the comb plate 11 at the lower entrance of the passenger conveyor 1. .

(2) Next, a second mark B is attached with a chalk or the like to the surface of the handrail 3 where the vertical line P passing through the first mark A and the handrail 3 intersect.

(3) Next, when the passenger conveyor 1 is driven and the steps 2 marked with the first mark A approach the comb plate 12 at the upper entrance of the passenger conveyor 1, the passenger conveyor 1 is stopped.

(4) Next, a third mark is provided on the surface of the handrail 3 at a portion where the vertical line Q passing through the first mark A near the comb plate 12 at the upper entrance of the passenger conveyor 1 and the handrail 3 intersect. Z is added.

(5) Finally, the third surface of the handrail 3
The distance L between the mark Z and the second mark B is measured.

The value of the delay amount L measured according to the procedures (1) to (5) is a specified value, that is, 200 mm.
Is exceeded, the wear of the drive rollers 9, 9a, 9b, 9c is remarkable.
It is determined that it is time to replace b and 9c.

As described above, according to the present embodiment, the wear degree of the drive rollers 9, 9a, 9b, 9c can be determined by the amount of delay L without directly measuring the outer diameters of the drive rollers 9, 9a, 9b, 9c. , It is possible to know the replacement time of the drive rollers 9, 9a, 9b, 9c in a short time.

[0019]

As described above, according to the present invention, the wear of the drive roller can be accurately known by measuring the delay amount of the handrail. A method of determining the replacement time of the driving roller for the handrail of the passenger conveyor, which can know the replacement time, has been obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a method of measuring a delay amount of a handrail.

FIG. 2 is a diagram illustrating the principle of a drive mechanism of a handrail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Passenger conveyor 2 Steps 3 Hand rail 4 Drive mechanism 5 Sprockets 6, 7, 8 Chain 9, 9a, 9b, 9c Drive roller 10, 10a, 10b, 10c Follower roller

Claims (2)

[Claims] 1. A travel distance of a handrail is compared with a travel distance of a step, and when a travel delay of a handrail occurs, the travel delay amount is measured, and the travel delay amount exceeds a specified value. In this case, it is determined that it is time to replace the handrail drive roller. 2. A method for determining a replacement time of a driving roller for a handrail of a passenger conveyor, wherein the specified value is set to 200 mm.