JP5455455B2 - Passenger conveyor handrail running abnormality monitoring device - Google Patents

Description

  The present invention relates to a handrail travel abnormality monitoring device for a passenger conveyor that monitors the handrail travel of a passenger conveyor and detects an abnormality in a handrail travel state.

  As for the automatic maintenance means of the handrail drive device of the conventional escalator, the lubricant applicator is slidably attached to the inner surface of the handrail on the return path side of the handrail through which the handrail passes through the escalator truss (for example, see Patent Document 1). . This lubricant applicator is fixed to the escalator truss with a wire and a spring, and by always applying the lubricant to the inner surface of the handrail, it prevents the handrail speed from decreasing, and the friction resistance between the lubricant applicator and the inner surface of the handrail When the state changes, the amount of expansion and contraction of the spring changes, and a switch that is turned on and off by the change warns that the handrail traveling state is abnormal, which is an abnormality in the handrail running state.

JP 2006-182534 A

  However, the prior art has the following problems. In the apparatus of Patent Document 1, a lubricant applicator is fixed to an escalator truss via a wire and a spring, and the lubricant is always applied to the inner surface of the handrail canvas. The lubricant is applied continuously regardless of the state of the handrail drive device or handrail guide system, and the alarm is activated only when the handrail speed has deteriorated to a predetermined value. When this occurs, there is a possibility that the handrail driving device or the handrail guide system is greatly damaged.

  The present invention has been made to solve the above-described problems. First, the transition (inclination γ) of the handrail speed with respect to the operation time of the passenger conveyor when the handrail drive device and the handrail guide system are in a normal state. Accumulate. Then, when the handrail speed V is lower than the set value α during the operation of the passenger conveyor, the lubricant is automatically applied to the inner surface of the handrail canvas for a certain time ty, and after the handrail speed V is improved, a certain period T When the transition of the handrail speed (inclination β) with respect to the operation time of the passenger conveyor is faster than the inclination (γ + δ), an alarm is issued so that maintenance is inspected early because an abnormality has occurred in the handrail drive system or handrail guide system. The purpose of the present invention is to obtain a passenger conveyor handrail running abnormality monitoring device that can prevent major damage to the handrail drive device and the handrail guide system and reduce maintenance work time such as parts replacement and adjustment work. And

A handrail traveling abnormality monitoring device for a passenger conveyor according to the present invention includes a detection unit that detects a handrail speed, an applicator that applies a lubricant to a curved surface in the handrail canvas, and the handrail canvas when the handrail speed is smaller than a set value. Driving the applicator so as to apply the lubricant to the inner curved surface, and when the lubricant application time, which is the time for applying the lubricant, has passed a set time, a controller for stopping the driving of the applicator , The control unit obtains the transition of the current handrail speed from the change of the handrail speed input from the detection unit with respect to the operation time, and records the past transition of the handrail speed when the handrail is normal, The comparison unit comparing the transition of the handrail speed and the transition of the past handrail speed recorded in the recording unit, and the time after the lubricant application time, which is the time after the set time has elapsed, is a time for confirming the abnormality In the case where the elapse a certain abnormality confirmation time, when the transition of the current handrail speed is greater than the transition of the past handrail speed is shall further comprising a warning device for generating an alarm.

  According to the passenger conveyor handrail running abnormality monitoring device according to the present invention, damage to the handrail drive device and the handrail guide system, faults in the installation state, etc. can be found early, and maintenance work can be performed before major damage occurs. As a result, there are few damaged parts and maintenance time such as replacement work can be shortened. Further, when the handrail driving device or the handrail guide system is damaged in the worst case, maintenance work can be performed before the malfunction of the passenger conveyor itself occurs.

It is a figure which shows the whole passenger conveyor structure which concerns on Embodiment 1 of this invention. It is sectional drawing which shows each part of the handrail canvas surface of the passenger conveyor which concerns on Embodiment 1 of this invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is a flowchart which shows operation | movement of the handrail running abnormality monitoring apparatus of the passenger conveyor which concerns on Embodiment 1 of this invention. It is a graph which shows the relationship between the operation time of the handrail running abnormality monitoring apparatus of the passenger conveyor which concerns on Embodiment 1 of this invention, and handrail speed. It is a graph which shows the relationship (in the case of normal) of the driving time and handrail speed of the handrail traveling abnormality monitoring apparatus of the passenger conveyor which concerns on Embodiment 1 of this invention. It is a graph which shows the relationship (in the case of abnormality) of the driving time and handrail speed of the handrail traveling abnormality monitoring apparatus of the passenger conveyor which concerns on Embodiment 1 of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a passenger conveyor handrail running abnormality monitoring apparatus of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
A passenger conveyor handrail travel abnormality monitoring apparatus according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 is a diagram showing an overall configuration of a passenger conveyor according to Embodiment 1 of the present invention. Moreover, FIG. 2 is sectional drawing which shows each part of the handrail canvas surface of the passenger conveyor which concerns on Embodiment 1 of this invention. 3 is a cross-sectional view taken along line AA in FIG. 1, FIG. 4 is a cross-sectional view taken along line BB in FIG. 1, and FIG. 5 is a cross-sectional view taken along line CC in FIG. In the following, in each figure, the same reference numerals indicate the same or corresponding parts.

  In FIG. 1, a passenger conveyor handrail travel abnormality monitoring apparatus according to Embodiment 1 of the present invention includes a detection unit 1 that detects a handrail speed V of a handrail 100, an applicator 2 that applies a lubricant, and an applicator 2. The control unit 3 that transmits the control signal, the recording unit 4 that records the past handrail speed transition (inclination γ) when the handrail 100 is normal, the current handrail speed transition (inclination β) and the recording unit 4 is provided with a comparison unit 5 that compares transitions (inclinations γ) of past handrail speeds recorded in 4, and an alarm device 6 that generates an alarm according to the comparison result of the comparison unit 5. In addition, the control part 3, the recording part 4, the comparison part 5, and the alarm device 6 are software which operate | moves on the microcomputer comprised from memories, such as CPU, ROM, RAM, for example.

  Further, in FIG. 1, a handrail forward path side 101 and a handrail return path side 102 of the handrail 100, a handrail driving device 110, and an escalator truss 120 are illustrated.

  The detection unit 1 detects the handrail speed V by, for example, pressing a roller against the handrail 100 on the handrail return side 102 of the handrail 100 and detecting the rotation speed of the roller from an encoder or the like. The control unit 3 determines the magnitude of the handrail speed V output from the detection unit 1 and the handrail speed setting value α, and when the handrail speed V is lower than the handrail speed setting value α, the controller of the applicator 2 A control signal is transmitted to 23 and 24. The recording unit 4 records the transition (inclination γ) of the handrail speed with respect to the operation time of the passenger conveyor when the handrail driving device 110 and the handrail guide system are in a normal state (for example, from the initial installation state until the first maintenance operation is performed). doing. The comparison unit 5 compares the transition (inclination β) of the handrail speed with respect to the operation time of the passenger conveyor from the end of the lubricant application for the predetermined time ty to the predetermined time T and the operation time of the passenger conveyor recorded in the recording unit 4. The transition of handrail speed (slope γ) is compared.

  In FIG. 2, the handrail canvas surface is classified into a handrail canvas inner side surface 103, a handrail canvas inner curved surface 104, and a roller transfer surface 105 to which a roller such as the handrail drive device 110 transfers.

  FIG. 3 shows a contact state between the forward handrail guide 112 provided on the holder 111 and the handrail canvas curved surface 104 on the handrail forward path side 101 in the cross section along the line AA in FIG.

  FIG. 4 shows a contact state between the return side handrail guide 113 and the handrail canvas curved surface 104 on the handrail return side 102 of the cross section taken along line BB in FIG.

  FIG. 5 shows the configuration of the applicator in the section taken along the line CC in FIG. The applicator 2 has two arms 22 each having a lubricant application surface 21 for applying a lubricant to the curved surface 104 inside the handrail canvas, and the two arms 22 are extended left and right to press the lubricant application surface 21 against the curved surface 104 inside the handrail canvas. An actuator 23 and an actuator 24 that moves the arm 22 up and down to apply lubricant to the curved surface 104 in the handrail canvas are provided.

  Next, the operation of the passenger conveyor handrail travel abnormality monitoring apparatus according to the first embodiment will be described with reference to the drawings.

  FIG. 6 is a flowchart showing the operation of the passenger conveyor handrail travel abnormality monitoring apparatus according to Embodiment 1 of the present invention. 7 to 9 are graphs showing the relationship between the operation time and the handrail speed of the passenger conveyor handrail travel abnormality monitoring apparatus according to Embodiment 1 of the present invention.

  7 to 9, the horizontal axis represents the operating time t, and the vertical axis represents the handrail speed V. In FIG. 7, the lubricant application set time ty and the set value α are drawn. 8 and 9, the lubricant application set time ty, the abnormality confirmation time T, and the set value α are drawn.

  First, in step 201, the control unit 3 inputs the handrail speed V of the handrail 100 from the detection unit 1.

  Next, in step 202, the control unit 3 compares the input handrail speed V with the set value α of the handrail speed. When the handrail speed V is smaller than the set value α (YES), the process proceeds to the next step 203, and when the handrail speed V is equal to or higher than the set value α (NO), the process returns to step 201. When the handrail speed V is equal to or higher than the set value α (NO), the processing may be terminated when the entire flowchart is activated at a constant cycle or a predetermined cycle.

  Next, in Step 203, when the handrail speed V is smaller than the set value α, the control unit 3 outputs a control signal for driving the actuators 23 and 24 to the applicator 2.

  Next, in step 204, the control unit 3 determines whether or not the lubricant application time has elapsed by the lubricant application set time ty. When the lubricant application time as the control signal output time has passed the lubricant application set time ty (YES), the process proceeds to the next step 205, and when the lubricant application time has not passed the lubricant application set time ty (NO). Returns to step 203.

  Next, in Step 205, when the lubricant application time has passed the lubricant application set time ty, the control unit 3 stops outputting the control signal.

  By transmitting a control signal from the control unit 3 to the actuators 23 and 24, first, the actuator 23 spreads the two arms 22 to the left and right and presses the lubricant application surface 21 against the curved surface 104 in the handrail canvas. Next, the arm 22 is moved up and down by the actuator 24 to apply the lubricant to the handrail canvas inner curved surface 104 for the lubricant application set time ty as shown in FIG.

  As a result, the frictional force generated between the forward handrail guide 112 and the handrail canvas curved surface 104 on the handrail forward path side 101 of the cross section along line AA shown in FIG. 3, and the handrail return path of the cross section along line BB shown in FIG. Since the lubricant capable of reducing the frictional force generated between the return side handrail guide 113 on the side 102 and the handrail canvas curved surface 104 can be automatically applied, the reduction of the handrail speed V can be automatically improved. .

  Further, when the passenger conveyor is continuously operated, the handrail speed is reduced because wear dust generated due to friction between the driving roller and the roller transfer surface 105 of the handrail canvas and dust due to the use environment are continuously generated. Since the frictional resistance between the handrail guide 112 and the return path side handrail guide 113 and the handrail canvas inner curved surface 104 is increased and the handrail speed is decreased, the above-described lubricant application is periodically performed. Therefore, the handrail speed V is as shown in FIG. It will change.

  In step 206, the control unit 3 inputs the handrail speed V of the handrail 100 from the detection unit 1.

  Next, in step 207, the control unit 3 records the input handrail speed V in the recording unit 4. The transition (inclination β) of the current handrail speed is calculated from the recorded handrail speed V.

  Next, in step 208, the control unit 3 determines whether or not the time after lubricant application has elapsed by the abnormality confirmation time T. If the time after lubricant application, which is the time after the lubricant application set time ty, has passed the abnormality confirmation time T, which is the time for confirming the abnormality (YES), the process proceeds to the next step 209 and the time after lubricant application If the abnormality confirmation time T has not elapsed (NO), the process returns to step 208.

  Next, in step 209, the comparison unit 5 changes the current handrail speed transition (inclination β), the handrail speed transition recorded in the recording unit 4 (inclination γ), and the inclination range (error range or margin range). The added value of δ (γ + δ) is compared. When the slope β, which is the transition of the current handrail speed, is larger than the slope (γ + δ) (YES), the process proceeds to the next step 210, and when the slope β is equal to or smaller than the slope (γ + δ) (NO), the process ends. To do.

  In step 210, if the inclination β is larger than the inclination (γ + δ), the alarm device 6 generates an alarm and ends the process.

  Reduced handrail speed (inclination β) relative to passenger conveyor operating time after lubricant application occurs due to abnormal conditions such as driving force failure due to malfunction of handrail drive device or sudden increase in handrail travel resistance due to abnormal wear of handrail guide system If not, as shown in FIG. 8, compared with the reduction in the handrail speed (inclination γ) with respect to the operation time of the passenger conveyor recorded in the recording unit 4, the inclination γ is within a predetermined range (inclination δ). It will fit.

  If, as shown in FIG. 9, the reduction in the handrail speed (inclination β) relative to the operation time of the passenger conveyor after applying the lubricant is greater than the predetermined range (inclination δ) of the inclination γ, compared to the inclination γ. Since there is a high possibility that a problem such as a handrail drive device malfunction or abnormal wear of the handrail guide system has occurred, an alarm is generated so that maintenance and inspection work can be performed early. This alarm may be displayed not only on the passenger conveyor body, but a system for notifying the maintenance service center of the handrail travel abnormality monitoring device may be added.

  DESCRIPTION OF SYMBOLS 1 Detection part, 2 Applicator, 3 Control part, 4 Recording part, 5 Comparison part, 6 Alarm device, 21 Lubricant application surface, 22 Arm, 23 Actuator, 24 Actuator, 100 Handrail, 103 Handrail canvas inner surface, 104 Handrail canvas Inner curved surface, 105 roller transfer surface, 111 holder, 112 forward side handrail guide, 113 return side handrail guide.

Claims (1)

A detection unit for detecting a handrail speed;
An applicator for applying a lubricant to the curved surface inside the handrail canvas;
When the handrail speed is lower than a set value, when driving the applicator to apply the lubricant to the curved surface in the handrail canvas, and when the lubricant application time, which is the time to apply the lubricant, has passed the set time, A controller for stopping the driving of the applicator ,
The control unit obtains the transition of the current handrail speed from the change in the driving time of the handrail speed input from the detection unit,
A recording unit that records the transition of past handrail speed when the handrail is normal;
A comparison unit for comparing the transition of the current handrail speed and the transition of the past handrail speed recorded in the recording unit;
The time after the application of the lubricant, which is the time after the elapse of the set time, has passed the abnormality confirmation time, which is the time for confirming the abnormality, and the current handrail speed transition is larger than the past handrail speed transition. When an alarm device that generates an alarm
Handrail traveling abnormality monitoring device of a passenger conveyor, characterized in that it further comprises a.

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