JP2003026385A - Driving device of passenger conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving device of a passenger conveyer having a function of easily detecting lowering of transmission capability of a wrap transmission belt transmitting the output of a driving machine. SOLUTION: Rotating shafts 18, 21 are respectively pivoted on a fixed part 17, disposed parallel to each other, transmission pulleys 19, 22 are respectively fixed thereto, and the transmission belt 23 is wrapped round the transmission pulleys 19, 22. A detector 25 is provided on the fixed part 17, and disposed opposite to a rectilinear motion part of the transmission belt 23. The detector is provided with an arithmetic device 26 for computing the output of the detector 25 corresponding to the distance in the direction intersecting perpendicularly to the lengthwise of the rotating shafts 18, 21 to the rectilinear motion part of the transmission part 23, and operating when the computed output value is beyond a designated range. By this arrangement, the occurrence of abnormality is detected from the operation of the arithmetic device 26 based on the behavior change of the transmission belt 23 decreased in tension without a member contacting the transmission belt 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a passenger conveyor in which the output of a drive machine is transmitted through a winding transmission mechanism to drive.

[0002]

2. Description of the Related Art FIG. 7 is a side view of essential parts conceptually showing a conventional driver for a passenger conveyor. In the figure, 1 is a speed reducer, 2 is an input shaft of the speed reducer 1, 3 is a belt wheel fixed to the input shaft 2, 4 is an electric motor provided in the speed reducer 1, and a belt wheel 6 is provided on an output shaft 5. Has been. 7 is a belt wheel 3
A plurality of belts are wound around the belt wheel 6 and are arranged in parallel.

Reference numeral 8 is a detection means, and a head 9 is arranged so as to face the outer surface of the belt 7 on the outer circumference of the belt wheel 3, and the longitudinal middle is provided on the rotating body 10 and the speed reducer 1 which are pivotally supported by the speed reducer 1. Is elastically deformed, and is configured by a holding piece 11 that holds the end of the rotating body 10 on the side opposite to the head 9 in the holding recess.

The conventional passenger conveyor drive device is configured as described above, and the output of the electric motor 4 is input to the speed reducer 1 via the winding transmission mechanism including the belt 7 and the like, and the output of the speed reducer 1 outputs the passenger conveyor. Is driven. When the belt 7 is peeled due to deterioration, the peeled portion pushes the head 9 of the rotating body 10 of the detection means 8. As a result, when the rotating body 10 is rotationally displaced, the abnormality of the belt 7 is displayed.

Further, FIG. 8 is a side view of essential parts conceptually showing another conventional drive device for a passenger conveyor. In the figure, the same reference numerals as those in FIG. 7 described above indicate corresponding parts, and 12 is a bracket which is connected to the reduction gear 1 and to which the electric motor 4 is mounted,
Reference numeral 3 denotes a detecting means provided on the bracket 12 and arranged in an annular shape of the belt 7. An actuating member 14 whose longitudinal middle is pivotally supported by the bracket 13 and one end of the actuating member 14 pivotally supports the belt 7. It comprises a trochanter 15 that rolls in contact with a linear movement point in the annular shape, and a detection switch 16 that is mounted on the bracket 13 and that has an actuating portion facing the other end of the actuating body 14.

Another conventional passenger conveyor drive device is constructed as described above, operates in the same manner as the passenger conveyor drive device of FIG. 7, and detects when the belt 7 breaks.
The holding of the trochanter 15 of No. 3 is released. As a result, the operating body 14 is rotationally displaced and presses the detection switch 16 to detect the abnormality of the belt 7, and the passenger conveyor is stopped when the abnormality occurs.

[0007]

In the conventional passenger conveyor driving device as described above, in the passenger conveyor driving device shown in FIG. 7, the belt 7 has the peeling due to deterioration displayed by the detecting means 8. There was a problem that abnormalities such as wear and elongation were not displayed. Also,
In the passenger conveyor drive device shown in FIG. 8, although the breakage of the belt 7 is detected by the detecting means 8, no abnormality such as wear or elongation of the belt 7 is detected, and the trochanter 15 is always in contact with the belt 7. Therefore, there is a problem that the belt 7 may be damaged.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a drive device for a passenger conveyor having a function of detecting a reduction in the transmission capacity of a winding transmission band for transmitting the output of a drive machine. And

[0009]

In the drive system for a passenger conveyor according to the present invention, rotary shafts pivotally supported by fixed parts and arranged parallel to each other, and transmissions provided on the rotary shafts, respectively. Vehicles, endless transmission belts wrapped around these transmissions, and fixed sections that are arranged in a non-contact state facing the linear movement points of the transmission belts to operate, and linear movements of the transmission belts. A detector that outputs an output corresponding to a distance in a direction orthogonal to the longitudinal direction of the rotation axis with respect to the location, and an arithmetic unit that operates the output of the detector and operates when the arithmetic output value deviates from a predetermined range are provided. .

Further, in the passenger conveyor drive device according to the present invention, the detector is arranged on the relaxation side of the transmission band during the transmission operation.

Further, in the passenger conveyor drive device according to the present invention, the detectors are provided so as to face each of the plurality of transmission bands, and the transmission corresponding to the operation of the arithmetic unit based on the outputs of these detectors is performed. A display device for displaying the band is provided.

Further, in the passenger conveyor drive device according to the present invention, there is provided an arithmetic unit for issuing a transmission band abnormal output when the detector gives an abnormal output, and the passenger conveyor is controlled at abnormal time by the transmission band abnormal output. A control panel is provided for the operation.

Further, in the passenger conveyor driving device according to the present invention, the first detector group and the other side of the transmission band, which are constituted by the detectors and are provided so as to face the linear movement portion on one side of the transmission band. Of the second detector group, which is provided facing the linear movement point of the above, and one of the outputs of the above two corresponding to the linear movement point on the relaxation side of the transmission belt based on the operating direction of the passenger conveyor, are connected to the arithmetic unit. And a control panel to operate.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 to 5 are views showing an example of an embodiment of the present invention, FIG. 1 is a side view of essential parts conceptually showing a drive device, and FIG. 2 is an enlarged sectional view taken along line AA of FIG. 3 is a diagram corresponding to FIG. 2 for explaining the situation when the transmission capacity of the transmission band in FIG. 1 is deteriorated, FIG. 4 is a diagram for explaining a normal displacement range in a linear movement portion of the transmission band in FIG. 1, and FIG. It is a block diagram showing the equipment connected to the container.

In the figure, 17 is a fixed part composed of a speed reducer, 18 is an input rotary shaft composed of an input shaft of the speed reducer, 19 is an input transmission wheel composed of a belt wheel fixed to the input rotary shaft 18, and 20 is a fixed part. With the electric motor provided in 17, the electric motor 2
0 bracket, that is, an output transmission wheel 2 formed of a belt wheel on an output rotation shaft 21 formed of an output shaft pivotally supported by a fixed portion.
Two are provided.

Reference numeral 23 denotes an input transmission wheel 18 and an output transmission wheel 22.
A plurality of endless power transmission belts, which are V-belts wound around, are arranged in parallel. Reference numeral 24 denotes a bracket projecting from the fixed portion 17 and arranged to face a linear movement portion on the outer side of the annular shape of the power transmission belt 23, and 25 denotes a detector composed of a reflective photoelectric device having a light emitting portion and a light receiving portion. Is mounted on the bracket 24 and is arranged so as to face each of the transmission bands 23, and is orthogonal to the longitudinal direction of the input rotary shaft 18 with respect to the linear movement portion of the transmission band 23 which is opposed by the light emission and the reflected light thereof. Emit an output corresponding to the distance in the direction.

Reference numeral 26 denotes an arithmetic unit provided in the control panel 27, which is connected to the detector 25 and calculates the distance between the transmission belt 23 and the detector 25 by the output of the detector 25 to transmit the transmission belt 23 during movement. It operates when the position in the linear movement position of is out of the predetermined range shown in FIG. Reference numeral 28 is a display device connected to the control panel 27, and when the arithmetic unit 26 is operated, it displays the power transmission band 23 corresponding to the detector 25 that has generated the output that causes the operation.

In the passenger conveyor driving device constructed as described above, the output of the electric motor 20 is input to the speed reducer via the winding transmission mechanism including the transmission belt 23, and the output of the speed reducer operates the passenger conveyor. To be done. And
3 and 4 show the positions of the linear motion points in the respective transmission bands 23 during the transmission operation in the state where the normal transmission operation by the transmission belt 23 is achieved, that is, in the distance from the detector 25. It is arranged within a predetermined range.

When the position of the linear movement portion of the transmission belt 23 during the transmission operation is within the above-mentioned predetermined range, the arithmetic unit 26 does not operate and the passenger conveyor is normally operated. Further, when the elongation tension of the transmission belt 23 decreases due to aging or the like, the behavior of the transmission belt 23 changes such that the amplitude in the direction orthogonal to the longitudinal direction of the input rotary shaft 18 in the transmission belt 23 during the transmission operation increases. To do.

For this reason, the position of the linear movement portion deviates from the above-mentioned predetermined range due to the change in the behavior of the power transmission belt 23 during the transmission operation. At this time, the output of the detector 25 causes the arithmetic unit 26 to operate and the tension to decrease. The occurrence of abnormality of the power transmission belt 23 is displayed on the display device 28. As a result, the transmission belt 23
It is possible to detect the occurrence of a decrease in tension, that is, the progress of wear, the abnormal elongation, and the occurrence of cracks, and by performing appropriate maintenance work, problems such as slips and breaks in the power transmission belt 23 due to transmission failure can occur. Can be prevented.

Further, since the decrease in tension can be detected without a member contacting the transmission belt 23, the transmission belt 23 is not worn, the life of the transmission belt 23 is extended, and the maintenance cost can be reduced. . In addition, the transmission band 2 during the transmission operation
It is also possible to notify the occurrence of an abnormality to the central control room of the building in which the passenger conveyor is installed, although not shown in the figure, when the tension is reduced.

When the rotation direction of the output transmission wheel 22 of the electric motor 20 is the arrow B shown in FIG. 1, the detector 25 detects the position of the linear movement portion on the relaxation side in the transmission belt 23 during the transmission operation. It Therefore, when the transmission belt 23 extends and the tension decreases, the behavior of the transmission belt 23 changes due to a change in the amplitude of the transmission belt 23 during the transmission operation in the direction orthogonal to the longitudinal direction of the input rotary shaft 18 that is remarkable. The position at the linear movement point is detected. Therefore, the decrease in the tension of the power transmission belt 23 can be reliably detected, the operational reliability of the arithmetic unit 26 is improved, and it is possible to more satisfactorily prevent the occurrence of defects due to the occurrence of the decrease in the tension of the transmission belt 23.

Further, a detector 25 is provided for each of the plurality of transmission bands 23, and the occurrence of the decrease in the tension of each transmission band 23 is displayed on the display device 28. by this,
It is possible to detect the occurrence of an abnormality in each of the power transmission belts 23, easily perform appropriate maintenance work such as replacement of the abnormality power transmission belts 23, and improve the maintenance work efficiency. Even if the detector 25 and the like shown in FIG. 1 are arranged so as to face the linear movement portion inside the annular shape of the power transmission belt 23, the operation in the embodiment of FIGS. 1 to 5 can be obtained. it can.

Embodiment 2. By applying the embodiment of FIGS. 1 to 5, it is possible to easily construct a passenger conveyor drive device as described below. That is, when the transmission belt 23 during the transmission operation is broken or deviates from the transmission wheel 19, the detector 25 cannot receive the reflected light with respect to the emitted light and loses the output corresponding to the distance from the transmission belt 23. Or
The output corresponding to the distance from the power transmission belt 23 during the power transmission operation becomes an abnormal value which is excessive or excessive, and the abnormal output of the transmission belt of the arithmetic unit 26 corresponding to the abnormal output of the detector 25 is set. To do.

Then, the transmission belt abnormality output such as the breakage of the transmission belt 23 is displayed on the display device 28 through the transmission belt abnormality output, and the function of the control panel 27 is displayed together with the transmission belt abnormality display. Performs an emergency control to stop the passenger conveyor in an emergency. As a result, it is possible to prevent the passenger conveyor from running backwards in the descending direction during the ascending operation or accelerating and descending during the descending operation due to the breakage of the transmission belt 23 or the like. Also, the broken transmission belt 2
It is possible to prevent the occurrence of a secondary problem that occurs when the item 3 is entangled with other equipment of the passenger conveyor.

Embodiment 3. FIG. 6 is a view showing an example of another embodiment of the present invention, which is equivalent to FIG. 1 described above.
In addition, except for FIG. 6, the drive device for the passenger conveyor is configured in the same manner as the above-described embodiment of FIGS. 1 to 5. In the figure, the same reference numerals as those in FIGS. 1 to 5 indicate corresponding parts, 29 is a first detector group in which the above-mentioned detectors 25 are arranged in the same manner as in the above-mentioned FIG. , The detector 25 described above
2 is formed in the same manner as in FIG. 2 described above, and is provided so as to face the linear movement portion of the transmission belt 23, and is arranged at a symmetrical position with respect to the first detector group 29.

In the passenger conveyor driving device configured as described above, the passenger conveyor is operated in the same manner as in the above-described embodiments of FIGS. 1 to 5, and the first detector group 29,
An abnormality such as a decrease in tension of the transmission belt 23 during the transmission operation is detected via the second detector group 30, and the abnormality of the transmission belt 23 is displayed, or the passenger conveyor is controlled at the time of abnormality. Therefore, although detailed description is omitted, the same operation as that of the embodiment of FIGS. 1 to 5 can be obtained in the embodiment of FIG.

Further, the first detector group 29 and the second detector group 3
0 is provided, and the function of the control panel 27 allows the passenger conveyor to operate in one direction, that is, to correspond to the linear movement point on the relaxation side of the transmission belt 23 based on the rotation direction of the output transmission wheel 22 of the electric motor 20. A change in the behavior of the power transmission belt 23 is detected via the output of the detector 25.

When the transmission belt 23 extends and the tension decreases, the transmission belt 23 has a significant increase in amplitude in the direction orthogonal to the longitudinal direction of the input rotary shaft 18 during the transmission operation. The position of the linear motion point due to the behavior change is detected. Therefore, the decrease in the tension of the power transmission belt 23 can be reliably detected, the operational reliability of the arithmetic unit 26 is improved, and it is possible to more satisfactorily prevent the occurrence of defects due to the occurrence of the decrease in the tension of the transmission belt 23.

[0030]

As described above, according to the present invention, the rotary shafts pivotally supported by the fixed portions and arranged in parallel with each other, and the transmission wheels provided on the respective rotary shafts,
The endless transmission belt wound around these transmission wheels and the fixed portion are arranged in a non-contact state so as to face the linear movement portion of the transmission belt and operate to rotate the transmission belt with respect to the linear movement portion. A detector is provided which outputs an output corresponding to a distance in a direction orthogonal to the longitudinal direction of the shaft, and an arithmetic device which operates the output of the detector and operates when the calculated output value is out of a predetermined range. .

As a result, the position of the linear motion portion deviates from the predetermined range due to a change in behavior of the power transmission band in which the tension is lowered during the power transmission operation, and the arithmetic unit operates to cause an abnormality in the power transmission band in which the tension is lowered. Displayed on the display device.
Therefore, it is possible to detect the occurrence of tension drop in the power transmission band, that is, the progress of wear, abnormal elongation, and the occurrence of cracks, and by performing appropriate maintenance work, problems due to transmission failure such as slippage and breakage of the power transmission band. It is effective in preventing the occurrence of. Further, since it is possible to detect the tension decrease without a member that comes into contact with the transmission band, the transmission band is not worn, the life of the transmission band is extended, and the maintenance cost is reduced.

Further, according to the present invention, as described above, the detector is arranged on the relaxation side in the transmission band during the transmission operation.

As a result, when the tension of the transmission band is reduced, the increase in the amplitude in the direction orthogonal to the longitudinal direction of the rotation axis in the transmission band during the transmission operation becomes remarkable.
The position of the linear motion point due to the change in the behavior of the power transmission band is detected. For this reason, it is possible to reliably detect a decrease in the tension of the power transmission band, improve the operation reliability of the arithmetic unit, and more effectively prevent the occurrence of defects due to the occurrence of the reduction in the power transmission band tension.

Further, according to the present invention, as described above, the detector is provided so as to face each of the plurality of power transmission bands,
A display device is provided for displaying a transmission band corresponding to the operation of the arithmetic unit based on the outputs of these detectors.

As a result, a detector is provided for each transmission band, and the transmission band in which the tension has decreased is displayed on the display device. For this reason, it is possible to easily and quickly detect the occurrence of an abnormality in each transmission band, and it is possible to easily perform appropriate maintenance work such as replacement of the abnormality transmission band, which has the effect of improving maintenance work efficiency. is there.

Further, as described above, the present invention is provided with a control unit for providing an abnormal output of the power transmission band when the detector outputs an abnormal output, and for controlling the passenger conveyor at the time of the abnormality by the abnormal power band output. It is provided.

As a result, when the transmission belt during the transmission operation is broken or deviates from the transmission wheel, the detector cannot receive the reflected light with respect to the emitted light and loses the output corresponding to the distance from the transmission belt. Or when the output corresponding to the distance to the power transmission belt during the power transmission operation becomes an abnormal value which is excessive or excessive, the arithmetic unit outputs a power transmission belt abnormal output. Then, according to the output of the transmission band abnormality, the function of the control panel is used to perform the abnormality control such that the passenger conveyor is decelerated in the abnormal state or stopped in the abnormal state. This has the effect of preventing the passenger conveyor from running backwards in the descending direction during the ascending operation or from accelerating and descending during the descending operation due to the occurrence of breakage of the power transmission band. In addition, there is an effect of preventing the occurrence of a secondary trouble that occurs when the broken power transmission belt is entangled with other equipment of the passenger conveyor.

Further, as described above, the present invention includes the first detector group formed by the detectors and provided to face the linear motion portion on one side of the transmission band and the linear motion on the other side of the transmission band. A control panel for connecting both outputs of the second detector group facing each other and the output of one of the two corresponding to the linear movement position on the relaxation side of the transmission belt based on the operating direction of the passenger conveyor to the arithmetic unit And are provided.

Accordingly, both the first detector group and the second detector group are provided, and the function of the control panel causes the relaxation side of the transmission band based on the operating direction of the passenger conveyor, that is, the rotational direction of the output transmission of the electric motor. The change in the behavior of the power transmission band is detected via the output of one of the two detectors corresponding to the linear movement point of. Then, when the transmission band is extended and the tension is reduced, a linear movement portion due to a change in the behavior of the transmission band appears in a portion where the amplitude increase in the direction orthogonal to the longitudinal direction of the input rotation axis in the transmission band during the transmission operation appears remarkably. The position is detected. Therefore, it is possible to properly and reliably detect the tension decrease in the power transmission belt according to the operating direction of the passenger conveyor, which improves the operation reliability of the arithmetic unit, and is more preferable due to the occurrence of the tension reduction in the power transmission belt. It has the effect of preventing the occurrence.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of the present invention and is a side view of essential parts conceptually showing a drive device.

2 is an enlarged cross-sectional view taken along the line AA of FIG.

3 is a diagram corresponding to FIG. 2 for explaining the situation when the transmission capacity of the transmission band in FIG. 1 is reduced.

FIG. 4 is a diagram for explaining a normal displacement range in a linear movement portion of a transmission band during the transmission operation of FIG.

5 is a block diagram showing a device connected to the detector of FIG. 1. FIG.

FIG. 6 is a view showing the second embodiment of the present invention and is equivalent to FIG. 1.

FIG. 7 is a side view of a main part conceptually showing a conventional passenger conveyor drive device.

8 is a view conceptually showing another conventional drive device for a passenger conveyor, which is equivalent to FIG. 7. FIG.

[Explanation of symbols]

17 fixed part, 18 input rotary shaft (rotary shaft), 19
Input transmission vehicle (transmission vehicle), 21 output rotation shaft (rotation shaft), 22 output transmission vehicle (transmission vehicle), 23 transmission band,
25 detector, 26 arithmetic unit, 27 control panel,
28 display device, 29 1st detector group, 30 2nd detector group.

Claims (5)

[Claims] 1. A rotary shaft pivotally supported by a fixed part and arranged in parallel with each other, a transmission wheel provided on each of these rotary shafts, and an endless transmission wound around these transmission wheels. The belt, which is provided in the fixed portion, is arranged in a non-contact state so as to face the linear movement portion of the transmission belt, and operates.
A detector that outputs an output corresponding to the distance in the direction orthogonal to the longitudinal direction of the rotation axis with respect to the linear movement portion of the transmission band, and operates when the output of this detector is calculated and the calculated output value deviates from a predetermined range. Drive device for a passenger conveyor equipped with a computing device for 2. The drive device for a passenger conveyor according to claim 1, wherein the detector is arranged on a relaxation side of a transmission band during transmission operation. 3. A detector is provided so as to face each of the plurality of power transmission bands, and a display device is provided for displaying the power transmission band corresponding to the operation of the arithmetic unit based on the outputs of these detectors. The drive device for a passenger conveyor according to claim 1, wherein the drive device is a passenger conveyor. 4. The arithmetic unit is adapted to generate a transmission band abnormal output when the detector outputs an abnormal output, and the control device is provided with a control panel for controlling the passenger conveyor in an abnormal state by the transmission band abnormal output. The drive device for the passenger conveyor according to any one of claims 1 to 3. 5. A first detector group formed of detectors and provided to face a linear motion portion on one side of the transmission band, and a first detector group provided to face a linear movement position on the other side of the transmission band. Both of the second detector group, and a control panel for connecting the output of one of the two corresponding to the linear movement point on the relaxation side of the transmission band based on the operating direction of the passenger conveyor to the arithmetic unit The drive device for the passenger conveyor according to any one of claims 1 to 4.