CN106335837A - Passenger conveyor chain extending detection apparatus and passenger conveyor - Google Patents
Passenger conveyor chain extending detection apparatus and passenger conveyor Download PDFInfo
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- CN106335837A CN106335837A CN201510888225.XA CN201510888225A CN106335837A CN 106335837 A CN106335837 A CN 106335837A CN 201510888225 A CN201510888225 A CN 201510888225A CN 106335837 A CN106335837 A CN 106335837A
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Abstract
The invention provides a passenger conveyor chain extending detection apparatus and a passenger conveyor. The apparatus can accurately and automatically detect the amount of extension of a chain. The apparatus 1 has: a drive wheel 17 which is driven to rotate via a drive source; a driven wheel 13 which is driven to rotate by the drive wheel via a chain 18; to-be-detected bodies 27, 28 which are separately arranged on the drive wheel and the driven wheel; sensors 29, 30 which are secured relative to a main frame of the passenger conveyor based on each to-be-detected body and detect the rotation through of the to-be-detected bodies in alternation; and a computing unit 31 which calculates timing differences of the rotation through from the sensors and calculates the amount of adding of the timing difference prior to and after the time period of the passenger conveyor, and calculates the amount of extension of the chain based on the amount of adding, the angular velocity of the drive wheel and the rotation diametr of the driven wheel.
Description
The application based on Japanese patent application 2015-137649 (applying date be on July 9th, 2015),
Enjoyed priority according to this application.The application includes this application full content by referring to this application.
Technical field
The present invention relates to passenger conveyors chain elongation detection means and passenger conveyors.
Background technology
Escalator has each chain such as drive chain, handrail drive chain, step chain.With
Past, termly carry out Maintenance and Repair, in this Maintenance and Repair, the elongation of chain is adjusted, with
Even if just chain also can be wrapping with chain (for example with certain tension force because the time extends through change
With reference to patent documentation 1).In upkeep operation, for example on-stream elongation (example measuring step chain
As with reference to patent documentation 2).The elongation diagnosing chain by the slack of detection drive chain is (for example
With reference to patent documentation 3).
Patent documentation 1: Japanese Unexamined Patent Publication 2015-48205 publication
Patent documentation 2: No. 4915391 publications of Japanese Patent Publication No.
Patent documentation 3: No. 5209015 publications of Japanese Patent Publication No.
But, in upkeep operation, lifting board is dismantled and is entered into enter inside Machine Room by attendant
Row operation is it is therefore necessary to stop the operating of escalator.Upkeep operation is legal requirement.But,
Shut down a few hours more inconvenience for user.Attendant is with reference to workbook.Safeguard
Personnel to carry out upkeep operation by chain is carried out with ruler with mensure of elongation etc..For safeguarding people
For member, the inspection of overhauling project and required replacing also spend time labour.Even if in safety
On need upkeep operation, be commercially also desirable that upkeep operation does not take several hours.
Content of the invention
The present invention be in view of this problem and carry out, its object is to offer being capable of high accuracy, automatically
Passenger conveyors chain elongation detection means and the passenger conveyors of the elongation of ground detection chain.
In order to solve such problem, according to an embodiment of the invention, provide a kind of passenger defeated
Send machine chain elongation detection means it is characterised in that possessing: driving wheel, is revolved by driving source
Turn；Driven pulley, using the driving force of above-mentioned driving wheel, is rotated by chain；Detected body, point
It is not arranged at above-mentioned driving wheel and above-mentioned driven pulley；Sensor, according to each above-mentioned detected body phase
Main frame for passenger conveyors is fixed, to above-mentioned detected body based on revolution be rotated through into
Row detection；And calculating part, obtain the difference being rotated through timing from each sensor, and obtain
State the incrementss through above-mentioned difference in front and back for the time of passenger conveyors, above-mentioned calculating part is according to above-mentioned increasing
The rotating diameter of dosage, the angular velocity of above-mentioned driving wheel and above-mentioned driven pulley is calculating above-mentioned chain
Elongation.
Can also be, above-mentioned detected body be metal object, this metal object have be fixed on have with
One end of the side of the sprocket wheel of multiple teeth of above-mentioned chain engagement and from above-mentioned one end than above-mentioned tooth
Tooth top more towards above-mentioned sprocket wheel footpath projection outward.
Can also be that the sensor is that the close of the above-mentioned detected body being made up of metal is examined
The noncontacting proximity sensor surveyed.
Can also be that above-mentioned calculating part is that the time during the operating of above-mentioned passenger conveyors passes through
Before, adjusted with respect to the positioning of sensor by each detected body and each above-mentioned detected body, make
Consistent, the time warp during above-mentioned operating afterwards from the appearance timing of the detection signal of each sensor
Later obtain the amount of change of the appearance timing of above-mentioned detection signal.
Can also be that above-mentioned calculating part is that the time during the operating of above-mentioned passenger conveyors passes through
Before, storage offsets from each other the sensor of a side of state of the 1st time difference and another from detecting timing
The waveform of the sensor of side, the time during above-mentioned operating is through obtaining the sensing of above-mentioned the opposing party later
The detection timing of device is with respect to the difference of the detection timing of the sensor of one side, i.e. than above-mentioned 1st time
The 2nd big time difference of difference, and obtain the difference of above-mentioned 1st time difference and above-mentioned 2nd time difference.
Can also be that above-mentioned passenger conveyors chain elongation detection means is also equipped with: changer, right
Above-mentioned driving source output has carried out the modulation electric current of pulse width modulation to electric current；And controller, defeated
Go out and become with from above-mentioned driving source towards the corresponding speed of any one of multiple Output speed of above-mentioned changer
More instruct, controller noted above with than above-mentioned driving wheel usual operating when the little angular velocity of angular velocity come
Drive above-mentioned driving source.
Can also be that above-mentioned calculating part uses programmable logic controller (PLC) (plc).
According to another implementation of the invention, a kind of passenger conveyors chain elongation is provided to detect
Device is it is characterised in that possess: driving wheel, is rotated by driving source；Driven pulley, using upper
State the driving force of driving wheel, rotated by chain；Disk, is arranged to coaxial above-mentioned driving wheel
And above-mentioned driven pulley, diametrically there is through hole respectively；Light-projecting portion, according to each above-mentioned disk
To arrange；Light accepting part, to be arranged according to each above-mentioned disk, respectively from above-mentioned through hole to from upper
The light stating light-projecting portion carries out light；And calculating part, obtain and detect according to each above-mentioned light accepting part
The difference of light timing, and obtain the incrementss through above-mentioned difference in front and back for the time of passenger conveyors, on
The rotation stating calculating part according to above-mentioned incrementss, the angular velocity of above-mentioned driving wheel and above-mentioned driven pulley is straight
Footpath is calculating the elongation of above-mentioned chain.
Can also be that above-mentioned calculating part is, the difference by timing to 1 point of the revolution of each detected body
Carry out repeated detection, average to by the value of difference above-mentioned obtained from repeated detection, and right
The lower noise that above-mentioned difference carries out deviation value removing is processed.
Additionally, according to another implementation of the invention, a kind of passenger conveyors are provided, its feature
It is possess: driving source, it is arranged at the main frame of passenger conveyors；Driving wheel, by above-mentioned drive
Dynamic source and rotate；Chain, is annularly circulated by the driving force of above-mentioned driving wheel；Driven pulley, leads to
Cross above-mentioned chain and rotate；Detected body, is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley；
Sensor, fixes with respect to above-mentioned main frame according to each above-mentioned detected body, to above-mentioned detected
Being rotated through and detected based on revolution of body；And calculating part, obtain the rotation from each sensor
Turn the difference by timing, and obtain the increase through above-mentioned difference in front and back for the time of above-mentioned passenger conveyors
Amount, above-mentioned calculating part is according to above-mentioned incrementss, the angular velocity of above-mentioned driving wheel and above-mentioned driven pulley
Rotating diameter is calculating the elongation of above-mentioned chain.
In accordance with the invention it is possible to high accuracy, automatically detect the elongation of chain.
Brief description
Fig. 1 is the summary pie graph of the passenger conveyors of the 1st embodiment of the present invention.
Fig. 2 is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
The figure constituting.
Fig. 3 is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
The figure of the configuration example of driving source.
Fig. 4 is the sensing with chain elongation detection means for the passenger conveyors of the 1st embodiment of the present invention
The block diagram of device.
Fig. 5 is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
The figure of the sensor output of one side and the opposing party.
Fig. 6 (a) is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
Time through front sensor and the position of rotation of detected body figure.
Fig. 6 (b) is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
Time through front sensor output figure.
Fig. 7 (a) is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
The figure through sensor later and the position of rotation of detected body for the time.
Fig. 7 (b) is the passenger conveyors chain elongation detection means of the 1st embodiment representing the present invention
Time through later sensor output figure.
Fig. 8 is that the passenger conveyors of the 1st embodiment for the present invention is described detect dress with chain elongation
Put the figure that the consistent method example of timing occurs making sensor detection signal.
Fig. 9 (a) is the passenger conveyors chain elongation detection means of the 2nd embodiment representing the present invention
Time through front sensor and the position of rotation of detected body figure.
Fig. 9 (b) is the passenger conveyors chain elongation detection means of the 2nd embodiment representing the present invention
Time through front sensor output figure.
Figure 10 (a) is that the passenger conveyors of the 2nd embodiment representing the present invention detect dress with chain elongation
The figure through sensor later and the position of rotation of detected body for the time put.
Figure 10 (b) is that the passenger conveyors of the 2nd embodiment representing the present invention detect dress with chain elongation
The figure through sensor output later for the time put.
Figure 11 is the structure with chain elongation detection means for the passenger conveyors of the 3rd embodiment of the present invention
Cheng Tu.
Figure 12 is the throwing with chain elongation detection means for the passenger conveyors of the 3rd embodiment of the present invention
Light portion, disk, the axonometric chart of light accepting part.
Figure 13 is the passenger conveyors chain elongation detection means of the 4th embodiment representing the present invention
The configuration example of hardware figure.
Figure 14 (a) is that the passenger conveyors of the 4th embodiment representing the present invention detect dress with chain elongation
The time put is through the figure of front sensor output.
Figure 14 (b) is that the passenger conveyors of the 4th embodiment representing the present invention detect dress with chain elongation
The driving source put figure through sensor output later in the time based on the 1st running speed.
Figure 14 (c) is that the passenger conveyors of the 4th embodiment representing the present invention detect dress with chain elongation
The driving source put figure through sensor output later in the time based on the 2nd running speed.
Figure 15 is the passenger conveyors chain elongation detection means of the 5th embodiment representing the present invention
Chart for the data processing example of the detection of chain elongation amount.
Specific embodiment
Hereinafter, referring to figs. 1 to Figure 15, the passenger conveyors chain elongation of embodiments of the present invention is examined
Survey device and passenger conveyors illustrate.In addition, give identical in the various figures for same area
Symbol and the repetitive description thereof will be omitted.
(the 1st embodiment)
Fig. 1 is the summary pie graph of the passenger conveyors of the 1st embodiment of the present invention.Present embodiment
Passenger conveyors be disposed on the escalator between the levels ground of building.Present embodiment
Passenger conveyors chain elongation detection means is disposed on the chain elongation detection means 1 of escalator.
The main frame 10 tilting is bearing between upper strata and the lower floor of building.Upper in main frame 10
Side is provided with Machine Room 11.It is provided with driving means 12, sprocket wheel 13 and control in Machine Room 11
Device 14.Driving means 12 have motor 15 and decelerator 16.Motor 15 has and main frame width side
Output shaft to parallel level.Decelerator 16 is amplified to the output torque of motor 15.Slowing down
The outlet side of device 16 is provided with sprocket wheel 17.It is wrapping with the drive chain of ring-type between sprocket wheel 17, sprocket wheel 13
Bar 18.Additionally, being provided with driven sprocket wheel 20 in the Machine Room 19 of the lower end side of main frame 10.?
Setting up between sprocket wheel 20 and sprocket wheel 13 has the step chain 21 of ring-type.With at equal intervals on step chain 21
It is linked with multiple steps 22.
Fig. 2 is the figure of the composition representing the passenger conveyors of present embodiment with chain elongation detection means.
It is stated that symbol represent identical key element.Chain elongation detection means 1 is the elongation to drive chain 18
Measure the device being detected.Drive chain 18 is hung on the sprocket wheel 17 of the output shaft of decelerator 16 and towards ladder
Between the sprocket wheel 13 of level 22.
Chain elongation detection means 1 possesses the sprocket wheel 17 (driving wheel) being driven and driven sprocket wheel
13 (driven pulleys).The sprocket wheel 17 being driven is rotated by driving means 12 (driving source).Driven chain
Wheel 13 is rotated using the driving force of the sprocket wheel 17 being driven, by drive chain 18 (chain).
The chain elongation detection means 1 of present embodiment possesses accessory 27,28 (detected body), noncontact
Formula sensor 29,30 (sensor) and calculating part 31.Accessory 27,28 is respectively arranged at sprocket wheel 17,13.
Noncontacting proximity sensor 29,30 main frame 10 with respect to escalator according to each accessory 27,28
Fixing.Being rotated through and examine based on revolution of 29,30 pairs of accessories 27,28 of noncontacting proximity sensor
Survey.Calculating part 31 obtains the difference being rotated through timing from noncontacting proximity sensor 29,30.Calculate
Portion 31 obtains the time of escalator through the incrementss being rotated through timing difference in front and back.Calculating part 31
Rotating diameter according to incrementss, the angular velocity of sprocket wheel 17 and sprocket wheel 13 is calculating drive chain 18
Elongation.
The decelerator 16 of driving means 12 (Fig. 1) is arranged on the platform 44 of Machine Room 11.On decelerator 16
It is provided with motor 15.Motor 15 controls rotation by control device 14.
Fig. 3 is the figure of the configuration example of the driving source representing that the escalator of present embodiment is used.In figure
The composition near the drive chain 18 of upper end side of main frame 10 is represented in 3.It is stated that symbol represent phase
Same key element.Band driving pulley 23 is provided with the drive shaft of the motor 15 driving.Drive in band
V band 24 has been wrapping with belt wheel 23.Motor 15 drives the input shaft 25 of decelerator 16.Defeated in decelerator 16
Sprocket wheel 17 is linked with shaft.
Sprocket wheel 17 is decelerator sprocket wheel (below, sometimes sprocket wheel 17 being referred to as drive sprocket 17).Drive sprocket
17 by drive chain 18 come rotation driving sprocket 13.Drive chain 18 for example passes through the company of multiple chain links
Tie and constitute.Drive chain 18 is endowed lax.For example, set up driving between sprocket wheel 17,13
In the state of chain 18, drive chain 18 moves.The slack of drive chain 18 is adjusted to,
The chain central part of the drive chain 18 in movement for the downside in the upside of drive chain 18 and downside is scratched
Qu Shi, the amplitude of drive chain 18 becomes determined value.
Sprocket wheel 13 be by the driving force from drive sprocket 17 driven sprocket wheel (below, sometimes by chain
Wheel 13 is referred to as driven sprocket 13).Ladder sprocket wheel 26 (Fig. 1) is provided with to coaxial on driven sprocket 13.
Driven sprocket 13 drives step chain 21 via ladder sprocket wheel 26.Drive sprocket 17 and driven sprocket 13
There are different pitch diameters (pitch circle diameter).Pitch diameter refers to and is hung on sprocket wheel 17
Drive chain 18 the external diameter of a circle of nodel line.
Additionally, as shown in Figure 2, the side of drive sprocket 17 one position is provided with the accessory detecting
27.Accessory 27 is arranged on side.Accessory 27 and noncontacting proximity sensor 29 separate non-contact sensor
Device 29 can detect the distance of accessory 27.Accessory 27 is metal forming part.Accessory 27 have one end with
And the projection with the other end of one end opposition side.The side of drive sprocket 17 is fixed in one end of accessory 27.
Drive sprocket 17 has the multiple teeth engaging with drive chain 18.The projection of the other end of accessory 27, from
One end of accessory 27 rise tooth top than sprocket more towards drive sprocket 17 footpath outward.Accessory 27 with
Drive sprocket 17 is integrally formed.Accessory 27 is around the rotary shaft rotation of drive sprocket 17.Similarly, exist
The side of driven sprocket 13 be a little also equipped with accessory 28.Accessory 28 is integratedly enclosed with driven sprocket 13
Rotary shaft rotation around driven sprocket 13.Accessory 28 also has the projection of one end and the other end.Accessory
The side of driven sprocket 13 is fixed in 28 one end.The projection of the other end of accessory 28, from accessory 28
One end rise tooth top than sprocket more towards driven sprocket 13 footpath outward.Accessory 27,28 is using tool
Magnetic metal.Accessory 27,28 for example can use ferrum.
Noncontacting proximity sensor 29 detects accessory 27 above drive sprocket 17.Noncontacting proximity sensor
The close of the accessory 27 of 29 pairs of revolutions based on accessory 27 detects.Noncontacting proximity sensor 30 from
The top detection accessory 28 of movable sprocket 13.Noncontacting proximity sensor 30 is joined to the revolution based on accessory 28
The close of part 28 is detected.Noncontacting proximity sensor 29,30 is all fixedly installed in main frame 10
Escalator frame (not shown).Noncontacting proximity sensor 29,30 respectively with drive sprocket 17, driven
Sprocket wheel 13 is corresponding.
Fig. 4 is the block diagram of that represents noncontacting proximity sensor 29.It is stated that symbol represent identical
Key element.Noncontacting proximity sensor 29 for example have coil 61, oscillating circuit 62, testing circuit 63 and
Output circuit 64.Oscillating circuit 62 is connected with coil 61.Testing circuit 63 shakes to oscillating circuit 62
The impedance variation of the coil 61 in the state of swinging is detected.It is right that output circuit 64 passes through testing circuit 63
The variable quantity of impedance is detected, as the change of the output signal of voltage etc..Line when oscillatory regime
When circle 61 is close with accessory 27, increase towards the magnetic flux of accessory 27.By the electromotive force based on magnetic flux,
Produce vortex flow in accessory 27.Produce the magnetic being oppositely directed to of the accessory 27 based on vortex flow in accessory 27
Logical.Due to the magnetic flux that is oppositely directed to and the impedance variation of coil 61.Voltage according to testing circuit 63 etc.,
Noncontacting proximity sensor 29 such as output pulse signal.Noncontacting proximity sensor 30 also with contactless biography
Sensor 29 is identical.
Additionally, Fig. 5 represents under the oscillatory regime of Fig. 4, drive sprocket 17 and driven sprocket 13 be with one
Fixed peripheral speed has carried out rotating the noncontacting proximity sensor 29 and contactless in the case of advancing
The rotation detection signal of sensor 30.
Fig. 5 is to represent noncontacting proximity sensor 29 (sensor of a side) and noncontacting proximity sensor
The figure of the respective output waveform example of 30 (sensors of the opposing party).It is stated that symbol represent identical will
Element.Detection signal 66,67 is the pulse of the noncontacting proximity sensor 29,30 from original state respectively
The signal waveform of shape.In addition, the interval of the number of detection signal 66,67 and detection signal 66,67
For illustrating, it is not limited to the interval of this in figure.So-called original state refers to position is adjusted
The state that completes of position adjustment.In the state of position adjustment completes, noncontacting proximity sensor 29,
30 and accessory 27,28 respective positions be adjusted to, the mutual spy of noncontacting proximity sensor 29,30
Consistent during mensure.Voltage representative signals (signal) voltage.
The close of 29,30 pairs of accessories 27,28 of noncontacting proximity sensor detects.By escalator
Usual operating, when drive sprocket 17 and the respective sprocket shaft of driven sprocket 13 rotate a circle, non-
Touch sensor 29,30 detects the close of an accessory 27,28.Drive chain in usual operating
The peripheral speed of wheel 17 is equal with the peripheral speed of driven sprocket 13.Drive sprocket 17 in usual operating
Pitch diameter be less than driven sprocket 13 pitch diameter (Fig. 2).The number of revolutions of drive sprocket 17 is more than
The number of revolutions of driven sprocket 13.Because the number of revolutions of drive sprocket 17 is larger, therefore it is adjusted to
From the probe interval of the detection signal 66 of noncontacting proximity sensor 29 than from noncontacting proximity sensor 30
The probe interval of detection signal 67 is short (Fig. 5).
Additionally, the calculating part 31 of Fig. 2 is electrically connected with noncontacting proximity sensor 29,30.Calculating part 31 is held
The detection signal of 2 systems of continuous input.On the basis of the initial timing setting is used as by calculating part 31.So-called
The initial timing setting refers to the cycle detecting the consistent moment arrival of timing of 2 systems.
Every certain certain intervals, just exist the detection timing of noncontacting proximity sensor 29 with contactless
Sensor 30 detect timing consistent moment (with reference to the part with enclosed with dashed lines in Fig. 5).Automatically helping
In the operating of ladder, each sprocket shaft of drive sprocket 17 and driven sprocket 13 persistently rotates.Due to continuing
Rotation, so Occasion cycle ground arrives repeatedly.This moment is the inspection from noncontacting proximity sensor 29
Survey the detection timing one detecting timing and the detection signal 67 from noncontacting proximity sensor 30 of signal 66
The moment causing.
Chain elongation detection means 1 is become between noncontacting proximity sensor 29,30 by initial setting
The consistent state of the timing of detection signal.The increasing of the time difference before and after during calculating part 31 calculating operating
Dosage.Through detection timing and the operating phase of front noncontacting proximity sensor 29,30 during by operating
Between through later detection timing comparison, calculating part 31 calculate incrementss.In other words, calculating part 31 exists
Time during the operating of escalator through front, by accessory 27,28 and non-contact sensor
The positioning adjustment of device 29,30, makes the appearance of the detection signal from noncontacting proximity sensor 29,30 determine
When consistent., after making appearance timing consistent, the time during operation is through obtaining later for calculating part 31
The amount of change of the appearance timing of detection signal.
Calculating part 31, in addition to the signal detection of noncontacting proximity sensor 29,30, is also implemented to obtain drive
Computing of elongation l of dynamic chain 18 etc..The incrementss based on detection timing for the calculating part 31 are to elongation l
Enter row operation.Calculating part 31 uses the pitch diameter of drive sprocket 17 and the pitch diameter of driven sprocket 13
Calculated.The function of calculating part 31 can also be by the cpu software based on cpu, rom, ram
To execute.Calculating part 31 preserves the data of each pitch diameter in rom.
Then, the action to the passenger conveyors of the present embodiment of above-mentioned composition illustrates.According to
Fig. 6, Fig. 7 and Fig. 8 are fixed to the detection of the noncontacting proximity sensor 29,30 before and after drive chain 18 elongation
When change illustrate.With reference to detection timing (Fig. 6) under the original state before drive chain 18 elongation
And during making escalator length operating and drive chain 18 elongation after detection timing (Fig. 7) said
Bright.
First, in initially set escalator, by the operation of attendant, chain elongation detects
Device 1 executes initial setting operation.
Fig. 6 (a) is the rotation through front noncontacting proximity sensor 29,30 and accessory 27,28 for the express time
The figure that indexing is put.Fig. 6 (b) is the output waveform through front noncontacting proximity sensor 29,30 for the express time
The figure of example.It is stated that symbol represent identical key element.Detection signal 66,67 represents respectively from non-
The waveform of touch sensor 29,30.Represent drive chain 18 elongation in Fig. 6 (a), Fig. 6 (b) before
Waveform example.Represent and operated accessory 27,28 and noncontacting proximity sensor 29,30 by attendant
Position adjustment be both noncontacting proximity sensors 29,30 timing consistent after waveform example.It is assumed that
Drive chain 18 (when rising operating) rotation to the right.
Herein, to the detection waveform from noncontacting proximity sensor 29 and from noncontacting proximity sensor 30
Detection waveform be compared.By comparing, attendant is to accessory 27,28 and contactless biography
The each position of sensor 29,30 carries out para-position, to become the position relationship of Fig. 6 (a).By para-position rather than
The detection timing of touch sensor 29,30 is consistent.Meshing point 68 represents driven sprocket 13 and drive chain
One of point of bar 18 engagement.Meshing point 68 is, for example, a position on pitch circle (dotted line).
Fig. 8 is for consistent to the appearance of the detection signal making from noncontacting proximity sensor 29,30 timing
The figure that illustrates of method example.It is stated that symbol represent identical key element.From drive sprocket 17
Detection signal 66 and from driven sprocket 13 detection signal 67 defeated towards chain elongation detection means 1
Enter.When the detection signal 66 frequently occurring rises, calculating part 31 is just by the rising of detection signal 66
The moment on edge is stored in ram.The moment that calculating part 31 rises in detection signal 67 obtains detection signal 67
Rising time with from ram detection signal 66 moment difference.
As concrete example, in moment t1, calculating part 31 detects detection signal 67 and rises.In moment t1,
The rising edge that calculating part 31 obtains detection signal 67 is upper with the detection signal 66 occurring before time tl
Rise difference t of the time between edge.Calculating part 31 compares to whether difference t is in the threshold value pre-saving
Relatively.In the case that difference t is more than threshold value, calculating part 31 is obtained moment t1 and is occurred after the time tl
Difference s of the time between the rising edge of detection signal 66.Whether calculating part 31 is in threshold value to difference s
Row compares.In the case that difference s is more than threshold value, calculating part 31 then carries out identical in moment t2 and compares
Computing.
In moment t2, before and after calculating part 31 obtains the rising edge of detection signal 67 and the moment t2 of moment t2
The rising edge of detection signal 66 between each time difference s, t.It is not located in threshold value in difference s, t
In the case of, calculating part 31 then carries out identical comparison operation in moment t3.
In moment t3, calculating part 31 obtain the rising edge of detection signal 67 of moment t3 with moment t3 it
Difference t of the time between the rising edge of detection signal 66 of front appearance.It is in the situation in threshold value in difference t
Under, calculating part 31 is to unanimously exporting.Moment t3 is stored in ram by calculating part 31.Detection signal
The moment of 67 risings is consistent with the moment that detection signal 66 rises.Detect detection timing one in moment t3
Situation about causing.Hereby it is achieved that the rising edge of detection signal 66,67 respective pulses goes out in the same time in phase
Existing this situation.
As Fig. 6 (b), the detection signal of 2 systems is to detect timing at regular intervals consistent
Moment arrives.The cycle that calculating part 31 can also be arrived in the consistent moment is as the initial timing setting
And it is stored in ram.
Afterwards, escalator (Fig. 1) is persistently generally operated daily.Escalator passes through drive sprocket
17 make ladder sprocket wheel 26 rotate.Multiple step 22 circulations are advanced.It is the feelings rising operating in loop direction
Under condition, the people taking from the stopping port 42 of lower floor is transported to the stopping port 43 on upper strata.In drive sprocket
In the case that 17 direction of rotation is contrary, escalator carries out contrary decline operating.
After the long-standing operating of escalator, manager is in order to carry out in the operating of escalator
The Maintenance and Repair of chain, and the switch of the determination of operating control device 14.Control device 14 passes through automatically
Switching manipulation in the operating of staircase etc. and make escalator start the detection of chain elongation amount.
Fig. 7 (a) is the rotation through noncontacting proximity sensor 29,30 later and accessory 27,28 for the express time
The figure that indexing is put.Fig. 7 (b) is the output waveform through noncontacting proximity sensor 29,30 later for the express time
The figure of example.It is stated that symbol represent identical key element.Detection signal 66,67 represents respectively from non-
The waveform of touch sensor 29,30.Fig. 7 (a), Fig. 7 (b) represent and transports during escalator length
The change of the detection timing in the case of drive chain 18 elongation after turning.
Drive chain 18 and driven sprocket 13 are all to right rotation.In the case of drive chain 18 elongation,
As Fig. 7 (a), the position of the meshing point 68 of drive chain 18 and driven sprocket 13 is with respect to drive chain
The direction of rotation of wheel 17 offsets towards the rear.The number of teeth of drive chain 18 and the tooth of driven chain gear teeth meshing with
And tooth pitch is constant when normal.Due to for constant, so the position that driven sprocket 13 is engaged with drive chain 18
Offset toward the rear side with respect to direction of rotation.The anglec of rotation of drive sprocket 17 is with respect to original state
The anglec of rotation of drive sprocket 17 changes towards postponing side.Due to changing, so accessory 27 is by non-
The timing of touch sensor 30 with respect under original state by constant time lag.
With respect to detection timing (Fig. 6 (b)) before drive chain 18 elongation, as Fig. 7 (b), time warp
The skew of detection timing generation time δ later.Rising edge has offset from each other time δ at regular intervals
Detection signal 66,67 arrive.
Then, calculating part 31 carries out calculating at computing by making cpu, rom, ram configuration processor
Reason.Cpu will detect the equivalent expansion in ram of timing δ and elongation l.Cpu is according to from rom
The program coding following computing of execution.
Illustrate to detecting the relation between the timing δ and elongation l of drive chain 18.Calculating part 31
Drive chain 18 is obtained by formula (1) and has extended delay-angle β during l.
β=2l/pcd (rad) ... (1)
Pcd is the pitch diameter of driven sprocket 13.L be drive chain 18 two wheels (driven sprocket 13,
Drive sprocket 17) in the middle of elongation.
Additionally, the angular velocity of rotation of driven sprocket 13 is set to ω (rad/s).Calculating part 31 passes through formula (2)
Calculating time δ.Time δ is that accessory 28 rotates to the position that can be detected by noncontacting proximity sensor 30
The required time.
δ=β/ω (s) ... (2)
The skew to noncontacting proximity sensor 29 and the detection timing of noncontacting proximity sensor 30 for the calculating part 31
δ is detected.Calculating part 31 passes through formula (1), the inverse operation of (2), calculates drive chain using formula (3)
Elongation l.
L=δ × pcd × ω/2 ... (3)
As described above, according to the passenger conveyors of present embodiment chain elongation detection means, lead to
The each side crossed 2 noncontacting proximity sensors 29,30 and be arranged at drive sprocket 17, driven sprocket 13
The accessory 27,28 in face is it becomes possible to be correctly detected the elongation of drive chain 18.Can be with very low
Cost be driven chain 18 elongation detection.
For instance, it is possible to measure to chain elongation when starting working daily, realize carrying of safety
High.Time, maintenance number of times and the repair rate of upkeep operation can be reduced, can suppress to safeguard inspection
Expense required for repairing.
Additionally, the passenger conveyors according to present embodiment are defeated with chain elongation detection means and passenger
Send machine, can high accuracy, automatically detect the elongation of drive chain 18.In order to carry out chain maintenance
Operation, lifting board dismounting need not be entered into Machine Room 11 to carry out operation by attendant.Do not stop
The operating of escalator just can detect chain elongation.The time that operating stops can strongly be reduced.Or
Person can eliminate the time that operating stops.More convenient for user.Attendant is without every
Secondary all arrive scene.In the overhauling project of escalator, the repair rate of the mensure of chain elongation is subtracted
Few.Commercially advantageous for the manager of building.Not excessively increase repair rate or
Person's maintenance number of times is it becomes possible to maintain safety.
To summarizing above, chain elongation detection means 1 is, in the drive sprocket 17 of drive chain 18
And a bit of the respective periphery of driven sprocket 13, it is provided through the accessory 27,28 detecting.Join
Part 27,28 is fixed on each sprocket wheel and is rotated together with each sprocket wheel.Additionally, chain elongation detection means 1 is,
It is configured with to accessory 27,28 by the non-contact sensor being detected in the affixed side of escalator
Device 29,30.Chain elongation detection means 1 is configured to, and on-stream can detect drive sprocket 17 respectively
Accessory 27 and driven sprocket 13 the timing passed through of accessory 28.
In the case that drive chain 18 produces elongation due to life-time service etc., driven sprocket 13 with drive
The time delay that dynamic chain 18 the engages amount corresponding with elongation.Due to postponing, so driven sprocket 13
Accessory pass through detection timing with respect to drive sprocket 17 accessory pass through detection timing relatively prolong
Late.The skew of timing is proportional to the elongation of drive chain 18.Due to proportional, so chain is stretched
Long detection means 1 is configured to, can be by carrying out detecting stretching to drive chain 18 to the skew of time
Length is detected.
Additionally, whichever chain such as drive chain 18, handrail drive chain, step chain 21 is all
There is drive sprocket 17 and driven sprocket 13.As long as chain elongation detection means 1 is to whichever chain all
The drive sprocket 17 necessarily having and driven sprocket 13 are respectively provided with accessory 27,28 and contactless biography
Sensor 29,30.With chains such as drive chain 18, handrail drive chain, step chains 21
Species is unrelated, and chain elongation detection means 1 can be by the detection side with the elongation of drive chain 18
Method identical method to detect chain elongation according to each chain species.
Additionally, according to chain elongation detection means 1, the encoder of high price need not be arranged.Only pass through minimum
The total two inexpensive noncontacting proximity sensors 29,30 of limit ground setting, chain elongation detection means 1
Just can accurately detect the elongation of drive chain 18.Due to elongation can be detected, it is possible to structure
Build the detecting system of low cost.
(the 2nd embodiment)
In above-mentioned 1st embodiment, chain elongation detection means 1 needs before drive chain 18 extends
The consistent operation of detection timing is made by initial setting.The passenger conveyors of the 2nd embodiment of the present invention
Just can be calculated without initial setting with chain elongation detection means.
Chain elongation detection means 2 (the passenger conveyors chain elongation detection means of the 2nd embodiment)
Possesses calculating part 31 (Fig. 2).Calculating part 31 prestores the time during the operating of comfortable escalator
Through the front noncontacting proximity sensor 29,30 detecting and regularly offsetting from each other the state of δ 1 (the 1st time difference)
Waveform.And, calculating part 31 time during operation is through obtaining δ 2 (the 2nd time difference) later.δ 2 is
Noncontacting proximity sensor 30 detect timing with respect to noncontacting proximity sensor 29 detection timing difference,
More than δ 1.The timing that detects of noncontacting proximity sensor 30 is determined with respect to the detection of noncontacting proximity sensor 29
Shi Yanchi δ 1.Calculating part 31 obtains the difference of δ 1 and δ 2.
For point in addition, as long as no special negate, then the composition of chain elongation detection means 2
Identical with the composition of above-mentioned chain elongation detection means 1.
Then, with reference to Fig. 9～Figure 10, the passenger conveyors chain of the present embodiment to above-mentioned composition is stretched
The action of long detection means illustrates.
Fig. 9 (a) be represent time of chain elongation detection means 2 through front noncontacting proximity sensor 29,
30 and accessory 27,28 position of rotation figure.Fig. 9 (b) is express time through front contactless biography
The figure of the output waveform example of sensor 29,30.It is stated that symbol represent identical key element.Meshing point 69
The rotation of direction of rotation to the right towards drive chain 18.Detection signal 66,67 represents respectively from noncontact
The waveform of formula sensor 29,30.
Chain elongation detection means 2 is to be respectively provided with the side of drive sprocket 17 and driven sprocket 13
There is accessory 27,28.Chain elongation detection means 2 is provided with the noncontact that accessory 27,28 is detected
Formula sensor 29,30.Chain elongation detection means 2 is, by accessory 27,28 phase in Fig. 9 (a) respectively
For surface to be arranged at clockwise, anticlockwise arbitrary angle position.In this figure
In the example of 9 (a), with the detection that timing is than noncontacting proximity sensor 29 that detects of noncontacting proximity sensor 30
The state of constant time lag is arranging these noncontacting proximity sensors 29,30.
As shown in Fig. 9 (b), drive chain 18 elongation before, the detection timing of noncontacting proximity sensor 29 with
The detection timing of noncontacting proximity sensor 30 has offset.Calculating part 31 obtains mutual from detecting timing
Offset by the waveform of the noncontacting proximity sensor 29,30 of state of time δ 1 (the 1st time difference).To be taken
The delay obtaining is set to δ 1.
Shape after drive chain 18 elongation after Figure 10 (a), Figure 10 (b) expression operating during escalator length
The change of the detection timing under state.
Figure 10 (a) is express time through noncontacting proximity sensor 29,30 later and accessory 27,28
The figure of position of rotation.Figure 10 (b) is the output through noncontacting proximity sensor 29,30 later for the express time
The figure of waveform example.It is stated that symbol represent identical key element.Detection signal 66,67 represents to come respectively
Waveform from noncontacting proximity sensor 29,30.
As Figure 10 (a), identical with the 1st embodiment, due to the elongation of drive chain 18 and meshing point
69 offset towards the rear with respect to direction of rotation.Meshing point 69 is that drive chain 18 is nibbled with driven sprocket 13 side
The position closed.The anglec of rotation amount of driven sprocket 13 produces and postpones.Due to the delay of anglec of rotation tolerance,
Therefore as Figure 10 (b), the detection timing of noncontacting proximity sensor 30 is with respect to noncontacting proximity sensor
29 detection constant time lag.Would indicate that the time delay of the difference detecting timing is set to δ 2 (the 2nd time difference).δ2
More than δ 1.δ 2 produces further than the δ 1 time delay before drive chain 18 elongation and postpones.
Herein, calculating part 31 is calculated using formula (4).
δ 3=δ 2- δ 1 ... (4)
Calculated δ 3 represents the delay of the detection timing producing due to the elongation of drive chain 18.Meter
Calculation portion 31 is used δ 3, is calculated by the calculating identical with the 1st embodiment, according to the above-mentioned 1st enforcement
The formula (3) of mode, detects to the elongation l of drive chain 18.
In the present embodiment, need not closely adjustment drive in the setting construction in initially set stage
Between the noncontacting proximity sensor 30 of the noncontacting proximity sensor 29 of movable sprocket 17 and driven sprocket 13 side
Detect timing.Due to by not carrying out accessory 27,28 and the position of noncontacting proximity sensor 29,30
Adjustment operation setting operation, it is possible to obtaining being greatly shortened escalator installation
When this effect of adjustment time.
(the 3rd embodiment)
In above-mentioned 1st embodiment, non-connecing is respectively arranged with for drive sprocket 17, driven sprocket 13
Touch sensor 29,30, but the passenger conveyors chain elongation of the 3rd embodiment of the present invention detects
Device can also be using the sensor replacing noncontacting proximity sensor 29,30.
Figure 11 is the structure with chain elongation detection means for the passenger conveyors of the 3rd embodiment of the present invention
Cheng Tu.Figure 12 is the axonometric chart of light-projecting portion, disk, light accepting part.It is stated that symbol represent identical
Key element.
As Figure 11, Fig. 1, Fig. 2, chain elongation detection means 3 possesses drive sprocket 17 and driven
Sprocket wheel 13, disk 33 and disk 34.It is arranged at drive sprocket to disk 33 and disk 34 coaxial
17 and driven sprocket 13.Disk 33,34 diametrically has exploration hole 32 (through hole) respectively.And,
As shown in Figure 12, chain elongation detection means 3 is also equipped with light-projecting portion 35, light accepting part 36 and calculating part 31.
Light-projecting portion 35 to arrange (only representing a side) according to each disk 33,34.Light accepting part 36 is respectively from detection
Hole 32 carries out light to the light from light-projecting portion 35.Light accepting part 36 to be arranged according to each disk 33,34.
Calculating part 31 obtains the difference of the light timing detecting according to each light accepting part 36.Calculating part 31 is obtained certainly
The incrementss of the difference through light timing in front and back for the time of dynamic staircase.Calculating part 31 according to incrementss,
The angular velocity of drive sprocket 17 and the rotating diameter of driven sprocket 13, to calculate stretching of drive chain 18
Long amount.Chain elongation detection means 3 is that the composition in addition to these key elements is filled with chain elongation detection
Put 1 composition identical.
Disk 33,34 is circular detection disk.Disk 33,34 respectively with drive sprocket 17, from
Movable sprocket 13 identical angular velocity is rotated.A position on disk on each disk 33,34
Opening has exploration hole 32.Light-projecting portion 35 is photoelectric sensor light-projecting portion.Light-projecting portion 35 have led light or
The output element of person's laser.Light accepting part 36 has photo detector.Photo detector is to having passed through exploration hole 32
Detection light carry out opto-electronic conversion.
Then, in the chain elongation detection means 3 of above-mentioned composition, drive sprocket 17 and driven sprocket
13 rotate respectively.During drive sprocket 17 and driven sprocket 13 rotate a circle, from each throwing
The light in light portion 35 passes through once only in each exploration hole 32.Each light accepting part 36 is reached by light.Respectively it is subject to
Light portion 36 according to each sprocket wheel to detect exploration hole 32 by timing.
The action of chain elongation detection means 3 and effect are identical with the example of the 1st embodiment.Driving
Before dynamic chain 18 elongation, attendant to make drive sprocket 17 and driven chain beforehand through initial setting
The detection timing of wheel 13 is consistent.Chain elongation detection means 3 obtains product by the time through mensure later
Give birth to the detection timing of the skew of time δ.Chain elongation detection means 3 to obtain drive by above-mentioned formula (3)
Dynamic chain elongation l.
Or, identical with the example of the 2nd embodiment, even if attendant is not initially set, chain
Bar elongation detection means 3 also can be calculated.Chain elongation detection means 3 can also be passed through in the time
Afterwards, according to the detection detecting the relative noncontacting proximity sensor 30 of timing with noncontacting proximity sensor 29
Regularly, time δ 1, δ 2 are obtained by above-mentioned formula (4), and to calculate drive chain elongation l.
In the present embodiment, due to using the light-projecting portion 35 producing light, therefore, it is possible to observe light beam
Position and reliably adjust light-projecting portion 35 and each position of light accepting part 36.Due to can reliably adjust,
So the light including light-projecting portion 35 and light accepting part 36 being carried out by attendant when escalator is installed
The setting of electric transducer and adjustment operation become easy.For setting adjustment time with contactless
The time of the setting adjustment of sensor 29,30 is compared and can shorten.
(the 4th embodiment)
In above-mentioned 1st embodiment, calculating part 31 to be executed by cpu software, but the work(of calculating part 31
Can also can be executed by hardware.Calculating part 31 for example can also be programmable using convertor controls
Logic controller (plc).Above-mentioned calculating can also be contactless by inputting towards programmable logic controller (PLC)
The signal of sensor 29,30 is executing.
Figure 13 is the passenger conveyors chain elongation detection means of the 4th embodiment representing the present invention
The configuration example of hardware figure.It is stated that symbol represent identical key element.
Chain elongation detection means 4 possesses changer 40 and programmable logic controller (PLC) (plc) 37.Become
Parallel operation 40 carries out pulse width modulation to electric current.Changer 40 will be modulated electric current and input to driving means
12 (Fig. 1).Programmable logic controller (PLC) (plc) 37 output is multiple to changer 40 with from driving means 12
Any one of Output speed corresponding speed alteration command.Programmable logic controller (PLC) 37 is with than driving
The little angular velocity of angular velocity during the usual operating of sprocket wheel 17 carrys out the motor 15 of driver 12.
Motor 15 is asynchronous motor (inductor motor).The direction of rotation of motor 15 and angular velocity pass through
Convertor controls are controlling.
Changer 40 drive motor 15.It is prerecorded with multiple velocity modes in changer 40.Conversion
Device 40 is connected with programmable logic controller (PLC) 37 via signal output terminal 38.Programmable logic controller (PLC)
37 is epigyny device.Programmable logic controller (PLC) 37 is controlled to the overall operating of escalator.Can
Programmed logic controller 37 according to situation towards changer 40 output speed pattern alteration command.
Changer 40 is prerecorded with the velocity mode of low speed.Changer 40 is from programmable logic controller (PLC)
37 receive the alteration command to any one speed.According to the alteration command towards changer 40, can be easy
The low-speed running of motor 15 is implemented on ground.
Additionally, being connected to noncontact on the signal input terminal 39 of programmable logic controller (PLC) 37
Formula sensor 29,30.Programmable logic controller (PLC) 37 has the fortune that the signal being inputted is entered with row operation
Calculate function.Programmable logic controller (PLC) 37 to the detection of noncontacting proximity sensor 29,30 timing (value upper
Rise) detected.The rising of so-called value refers to the pulse signal from noncontacting proximity sensor 29,30
The rising of value.The detection that programmable logic controller (PLC) 37 can calculate noncontacting proximity sensor 29,30 is fixed
When and be capable of the detection timing difference of storing initial.
With regard to composition in addition, the structure of chain elongation detection means 4 and chain elongation detection means 1
Become identical.
Figure 14 (a) is that the passenger conveyors of the 4th embodiment representing the present invention detect dress with chain elongation
The figure of the output waveform example through front noncontacting proximity sensor 29,30 for the time put.Figure 14 (a)～
In Figure 14 (c), it is stated that symbol represent identical key element.In Figure 14 (a)～Figure 14 (c), detection letter
Numbers 66,67 represent the waveform from noncontacting proximity sensor 29,30 respectively.
Then, the passenger conveyors chain elongation detection means to the present embodiment of above-mentioned composition
Action illustrates.
Programmable logic controller (PLC) 37 make the running speed of escalator than usual when running speed slow.
As one, 1/4 of running speed when running speed is reduced to usual.As this figure, due to
The reduction of running speed and the interval variation of the waveform of noncontacting proximity sensor 29.
First, attendant to from noncontacting proximity sensor 29 detection waveform with from contactless
The detection waveform of sensor 30 is compared reference.Attendant is to accessory 27,28 and contactless
The each position of sensor 29,30 carries out para-position, so that the waveform of output Figure 14 (a).By position adjustment,
Chain elongation detection means 4 makes the detection timing of noncontacting proximity sensor 29,30 consistent.
By making the consistent adjustment of the detection timing of noncontacting proximity sensor 29,30, thus in drive chain
Under original state before bar 18 elongation, unrelated with running speed, noncontacting proximity sensor 29 detection is fixed
When equal with the detection of noncontacting proximity sensor 30 timing.Change as Figure 14 (a), with running speed
Change is unrelated, detection signal waveform does not change.
Figure 14 (b) is the time representing chain elongation detection means 4 through later based on the 1st running speed
The figure of the output waveform example of noncontacting proximity sensor 29,30.Programmable logic controller (PLC) 37 is helped automatically
The running speed when running speed of ladder remains usual is constant.In the state of drive chain 18 elongation,
Assume start from scratch increase detection timing shift time be δ 1.That is, offset from each other from detection timing
The noncontacting proximity sensor 29,30 of the state of δ 1, detects the waveform of detection signal 66,67.Institute
Meaning running speed substantially refers to the peripheral speed of motor 15.
Figure 14 (c) is the time representing chain elongation detection means 4 through later based on the 2nd running speed
The figure of the output waveform example of noncontacting proximity sensor 29,30.Represent that programmable logic controller (PLC) 37 makes base
The escalator operating of running speed when usual temporarily ceases, and reduces running speed after a stop
To usual when running speed 1/4, make again escalator operate, in the time through later, with Figure 14 (b)
The result that similarly detected of example.Detection timing in the state of drive chain 18 is extended
Shift time is set to δ 2.
The running speed of escalator is reduced to 1/4.Due to the running speed for 1/4, so driven sprocket
13 angular velocity of rotation ω also becomes 1/4.Detection δ time delay 2 becomes δ 2=4 δ 1." " represents multiplication fortune
Calculate.δ 2 be based on usual when 4 times of time delay of running speed of time difference (with reference to formula (2)).
Assume escalator running speed completely constant without change and noncontacting proximity sensor 29,
30 detection timing is completely correct.If running speed is constant and detects timing correctly, even if logical
Cross low-speed running to determine data, Detection results are not sufficient.But, the fortune of escalator
Rotary speed somewhat changes sometimes.Based on noncontacting proximity sensor 29,30 or light-projecting portion 35, light
The detection timing of portion 36 grade photoelectric sensor (Figure 13), produces small variation sometimes.Therefore, detect
Timing is possible to produce small error.In the chain elongation detection means 4 of present embodiment, detection
Time delay δ 2 be based on usual when 4 times of time delay of running speed.Noncontacting proximity sensor
29th, 30 detection timing is, even if carrying out detecting also hardly under the situation reducing running speed
Change.Even if being detected under the situation reducing running speed, the operating speed of escalator
Degree also hardly changes.Due to hardly changing, even if so for example there is escalator
Running speed, the change of detection timing based on noncontacting proximity sensor 29,30 or photoelectric sensor
Move it is also possible to the attenuating of the accuracy of detection causing the impact due to this variation is reduced to 1/4.
Additionally, programmable logic controller (PLC) 37 can also by running speed with respect to usual when operating speed
The speed ratio settings of degree are the speed ratios different from 1/4.Programmable logic controller (PLC) 37 can also with above-mentioned
Example makes chain elongation detection means 4 action in the same manner.Even if by different speed than to noncontact
In the case that the side-play amount of the detection timing of formula sensor 29,30 is detected, chain elongation detects
Device 4 also can reduce the reduction of accuracy of detection.Chain elongation detection means 4 can be by due to helping automatically
Ladder running speed, based on noncontacting proximity sensor 29,30 etc. detection timing variation impact and
The reduction of the accuracy of detection causing, will be as little as with speed than corresponding amount.
Present embodiment passenger conveyors with, in chain elongation detection means, driven chain can be reduced
The detection of the elongation to drive chain 18 for the variation by detecting timing of wheel 13 and drive sprocket 17
The impact that precision causes.Can reduce based on noncontacting proximity sensor 29,30 and photoelectric sensor (figure
13) etc. by detecting the impact that the variation of timing causes to accuracy of detection.
(the 5th embodiment)
It is also possible to carry out following to detection data in each embodiment of above-mentioned 1st～the 4th embodiment
Process.
The passenger conveyors chain elongation detection means of the 5th embodiment of the present invention is, in calculating part
31 are provided with data processing division 41 (Fig. 2).Data processing division 41 is logical to 1 point of the revolution of accessory 27,28
The difference crossing timing carries out repeated detection.Data processing division 41 will be by differences multiple obtained from repeated detection
Value average.Data processing division 41 carries out deviation value removing to by difference obtained from equalization
Lower noise process.Data processing division 41 is based on cpu, rom, ram.With regard in addition
Point, as long as following not negating especially, then the passenger conveyors chain elongation of present embodiment is examined
Survey device identical with the composition of above-mentioned chain elongation detection means 1.
Figure 15 is that the passenger conveyors representing present embodiment are used for carrying out chain with chain elongation detection means
The chart of the data processing example of the detection of bar elongation.
The passenger conveyors chain elongation detection means of the present embodiment of this composition is, for example logical
Cross the method for the 1st embodiment and calculating part is implemented for more than 31 time to calculate to measure.The transverse axis of Figure 15 represents the 1st
Secondary, the 2nd time ..., n-th such measure numbering.Some expression non-contact sensor of the longitudinal axis
The true value (second) of the time of detection timing of device 29,30.The measured value of n time is distributed in the vicinity of true value.
In drive sprocket 17 and driven sprocket 13 are detected by timing, produce sometimes and automatically help
The detection timing of itself small speed fluctuation of ladder or noncontacting proximity sensor 29,30 small
Change etc..Due to small change, measured value is slightly offset compared with true value.Additionally, according to morning
, there are a large amount of passengers and take simultaneously in the difference of time-bands in evening or when holding party between floors
Situation in step 22.Difference according to time-bands or due to holding party, also exists and automatically helps
The temporarily-depressed situation of running speed of ladder.Running speed reduce in the case of measured value sometimes with n
The secondary larger deviation of other measured values.
Assume that the measured value according to 1 time judges to extend.In the judgement based on the measured value of 1 time, only
Want measurement system to obtain measured value with can having enough precision, then have no problem.But, surveying
Determine system measurement accuracy inadequate in the case of, in the mensure of 1 time, measured value is possible to produce by mistake
Difference.The chain elongation detection means of present embodiment obtains the meansigma methodss of repeated detection.Additionally, as schemed
15 like that, and data processing division 41 executes the process data 45 such as removing.Data 45 has in longitudinal axis side
The deviation value exceed the setting of above-below direction upwards from meansigma methodss deviateing.Can detect more accurate
Chain elongation.
In addition, the present invention is not directly defined in above-mentioned embodiment like that, do not taking off in implementation phase
Element can be deformed in the range of its purport and be embodied.In the above-described embodiment,
Passenger conveyors can also be travelator.
In the above-described embodiment, calculating part 31 can also use driven sprocket 13 pitch diameter and from
The rotation number of movable sprocket 13.The anglec of rotation (rad/s) the i.e. angular velocity of time per unit can certainly be replaced,
And use number of revolutions (1/s) the i.e. rotation number of time per unit.For only by based on angle speed
The calculating of simple substitute between degree and rotation numerical and the enforcement part implemented, the embodiment party of the present invention
The superiority of the passenger conveyors chain elongation detection means of formula will not be subject to any loss.
Pitch diameter pcd represents (iso 606 or jis b 1802) by pcd=p/ [sin (180/t) °].This
Place, p is chain pitch, and t is teeth number of sprocket.
In the above-described embodiment, can be sensitive to the detection of accessory 27 according to noncontacting proximity sensor 29
Degree, to change shape and the size of accessory 27 (and accessory 28).When the size of accessory 27 is less than coil
During 61 size, detection sensitivity reduces.In order to improve detection sensitivity, can be for larger line
Circle 61 uses larger accessory 27.Noncontacting proximity sensor 29,30 can also use magnetic detection sensor.
In Figure 5 for the example in the case of the pitch diameter difference of sprocket wheel 17,13.Section in drive sprocket 17
In the case of the pitch diameter identical of circular diameter and driven sprocket 13, detect timing is spaced in drive chain
Wheel 17 and driven sprocket 13 between the two often when identical.
The detection method of Fig. 8 is to illustrate, and detection method can also use additive method.For example, to being derived from
The waveform patterns of the row of detection signal 66,67 of the noncontacting proximity sensor 29,30 of original state are carried out
The mensure of certain time, and record measurement result.In the time through later, again to from contactless
The waveform patterns of the row of detection signal 66,67 of sensor 29,30 are measured, and obtain oscillogram
Case.Can also be by being compared through waveform patterns in front and back to the time, thus actual measurement is derived from
The time delay of the detection signal 66,67 of noncontacting proximity sensor 29,30.Can also be surveyed by reality
The calculating to carry out above-mentioned formula (3) for the storage of the signal waveform of amount.
In the various figures, the ratio of the pulse number of detection signal 66,67, the pulse of detection signal 66,67
Shape, signal level, the ratio of height, rising edge interval are all to illustrate, and can carry out various changes.
It is not limited to ratio of pulse number of these figures etc..The longitudinal axis of Fig. 5 etc. can also replace signal voltage and
Represented by the size of signal code.
Additionally, appropriately combined by the multiple elements disclosed in above-mentioned embodiment, being capable of shape
Become various inventions.For example, it is also possible to delete several whole elements disclosed in from embodiment
Element.And, can also the appropriately combined element crossing over different embodiments.
Claims (10)
1. a kind of passenger conveyors chain elongation detection means is it is characterised in that possess:
Driving wheel, is rotated by driving source；
Driven pulley, using the driving force of above-mentioned driving wheel, is rotated by chain；
Detected body, is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley；
Sensor, fixes with respect to the main frame of passenger conveyors according to each above-mentioned detected body, right
Being rotated through and detected based on revolution of above-mentioned detected body；And
Calculating part, obtains the difference being rotated through timing from each sensor, and it is defeated to obtain above-mentioned passenger
Send the incrementss through above-mentioned difference in front and back for the time of machine,
Above-mentioned calculating part is according to above-mentioned incrementss, the angular velocity of above-mentioned driving wheel and above-mentioned driven pulley
Rotating diameter is calculating the elongation of above-mentioned chain.
2. passenger conveyors as claimed in claim 1 with chain elongation detection means it is characterised in that
Above-mentioned detected body is metal object, and this metal object has to be fixed on to have to be nibbled with above-mentioned chain
Close one end of the side of the sprocket wheel of multiple teeth and from above-mentioned one end than above-mentioned tooth tooth top more towards
Footpath outward raised to above-mentioned sprocket wheel.
3. passenger conveyors as claimed in claim 2 with chain elongation detection means it is characterised in that
The sensor is close to the noncontact being detected to the above-mentioned detected body being made up of metal
Formula sensor.
4. passenger conveyors as claimed in claim 1 with chain elongation detection means it is characterised in that
Above-mentioned calculating part is, the time during the operating of above-mentioned passenger conveyors through front, by each
Detected body and each above-mentioned detected body adjust with respect to the positioning of sensor, make from each sensing
The appearance timing of the detection signal of device is consistent, and the time during above-mentioned operating is through obtaining later afterwards
State the amount of change of the appearance timing of detection signal.
5. passenger conveyors as claimed in claim 1 with chain elongation detection means it is characterised in that
Above-mentioned calculating part is that the time during the operating of above-mentioned passenger conveyors, through front, stores
Offset from each other the sensor of a side and the sensing of the opposing party of the state of the 1st time difference from detection timing
The waveform of device, the time during above-mentioned operating is through obtaining the detection of the sensor of above-mentioned the opposing party later
Timing with respect to the sensor of one side detect timing difference, i.e. bigger than above-mentioned 1st time difference the
2 time differences, and obtain the difference of above-mentioned 1st time difference and above-mentioned 2nd time difference.
6. passenger conveyors as claimed in claim 1 with chain elongation detection means it is characterised in that
It is also equipped with:
Changer, has carried out the modulation electric current of pulse width modulation to the output of above-mentioned driving source to electric current；
And
Controller, output is arbitrary towards multiple Output speed of above-mentioned changer with from above-mentioned driving source
Individual corresponding speed alteration command,
Controller noted above with than above-mentioned driving wheel usual operating when the little angular velocity of angular velocity to drive
Above-mentioned driving source.
7. passenger conveyors as claimed in claim 1 with chain elongation detection means it is characterised in that
Above-mentioned calculating part uses programmable logic controller (PLC) (plc).
8. a kind of passenger conveyors chain elongation detection means is it is characterised in that possess:
Driving wheel, is rotated by driving source；
Driven pulley, using the driving force of above-mentioned driving wheel, is rotated by chain；
Disk, is arranged to coaxial above-mentioned driving wheel and above-mentioned driven pulley, diametrically has respectively
There is through hole；
Light-projecting portion, to be arranged according to each above-mentioned disk；
Light accepting part, to be arranged according to each above-mentioned disk, respectively from above-mentioned through hole to from above-mentioned throwing
The light in light portion carries out light；And
Calculating part, obtains the difference of the light timing detecting according to each above-mentioned light accepting part, and obtains and take advantage of
The time of objective conveyer through the incrementss of above-mentioned difference in front and back,
Above-mentioned calculating part is according to above-mentioned incrementss, the angular velocity of above-mentioned driving wheel and above-mentioned driven pulley
Rotating diameter is calculating the elongation of above-mentioned chain.
9. the chain elongation detection means of the passenger conveyors as any one of claim 1 to 8,
It is characterized in that,
Above-mentioned calculating part is, 1 point of the revolution of each detected body of the difference by timing is repeatedly examined
Survey, average to by the value of difference above-mentioned obtained from repeated detection, and above-mentioned difference is carried out
The lower noise that deviation value removes is processed.
10. a kind of passenger conveyors are it is characterised in that possess:
Driving source, is arranged at the main frame of passenger conveyors；
Driving wheel, is rotated by above-mentioned driving source；
Chain, is annularly circulated by the driving force of above-mentioned driving wheel；
Driven pulley, is rotated by above-mentioned chain；
Detected body, is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley；
Sensor, fixes with respect to above-mentioned main frame according to each above-mentioned detected body, to above-mentioned quilt
Detect being detected based on being rotated through of revolution of body；And
Calculating part, obtains the difference being rotated through timing from each sensor, and it is defeated to obtain above-mentioned passenger
Send the incrementss through above-mentioned difference in front and back for the time of machine,
Above-mentioned calculating part is according to above-mentioned incrementss, the angular velocity of above-mentioned driving wheel and above-mentioned driven pulley
Rotating diameter is calculating the elongation of above-mentioned chain.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-137649 | 2015-07-09 | ||
| JP2015137649A JP6058755B1 (en) | 2015-07-09 | 2015-07-09 | Chain extension detecting device for passenger conveyor and passenger conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106335837A true CN106335837A (en) | 2017-01-18 |
| CN106335837B CN106335837B (en) | 2018-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510888225.XA Active CN106335837B (en) | 2015-07-09 | 2015-12-07 | Passenger conveyors chain elongation detection means and passenger conveyors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271944A (en) * | 2018-03-13 | 2019-09-24 | 东芝电梯株式会社 | Diagnostic device and diagnostic method |
| CN111268545A (en) * | 2020-01-16 | 2020-06-12 | 日立电梯（广州）自动扶梯有限公司 | Handrail area speed monitoring facilities and automatic running gear |
| CN111398620A (en) * | 2020-05-14 | 2020-07-10 | 上海爱登堡电梯集团股份有限公司 | Lateral detection device for speed measurement of double chain wheels of escalator |
| CN112649294A (en) * | 2020-12-01 | 2021-04-13 | 中集物联科技有限公司 | Method and system for detecting abrasion elongation of chain |
| CN112875483A (en) * | 2019-11-29 | 2021-06-01 | 东芝电梯株式会社 | Chain slack detecting device of passenger conveyor |
| US11150151B2 (en) | 2018-12-19 | 2021-10-19 | Otis Elevator Company | Method and device for monitoring chain tension |
| CN114072348A (en) * | 2019-10-31 | 2022-02-18 | 三菱电机大楼技术服务株式会社 | Auxiliary tool and method for checking chain of passenger conveyor |
| CN114057078A (en) * | 2020-08-05 | 2022-02-18 | 东芝电梯株式会社 | Chain extension detection device |
| CN115916684A (en) * | 2020-06-23 | 2023-04-04 | 三菱电机楼宇解决方案株式会社 | Detection device and passenger conveyor |
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| KR101815507B1 (en) * | 2017-08-17 | 2018-01-05 | 한국콘베어공업주식회사 | Method for estimating an amount of wear for roller chain pin using friction sound |
| JP7362562B2 (en) * | 2020-08-03 | 2023-10-17 | 東芝エレベータ株式会社 | Passenger conveyor chain stretch detection device |
| JP7024046B1 (en) | 2020-11-19 | 2022-02-22 | 東芝エレベータ株式会社 | Diagnostic system |
| JP7263498B1 (en) | 2021-12-22 | 2023-04-24 | 東芝エレベータ株式会社 | Chain elongation measuring device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07137976A (en) * | 1993-11-16 | 1995-05-30 | Toshiba Corp | Chain elongation detector |
| JP2004099252A (en) * | 2002-09-10 | 2004-04-02 | Mitsubishi Electric Corp | Anomaly detector for passenger conveyor |
| CN101397113A (en) * | 2007-09-25 | 2009-04-01 | 株式会社日立制作所 | Diagnosis device of chain slack for passenger conveying equipment and diagnosis method |
| JP2009084028A (en) * | 2007-10-02 | 2009-04-23 | Hitachi Building Systems Co Ltd | Diagnostic method of chain of passenger conveyor |
| JP2009083941A (en) * | 2007-09-27 | 2009-04-23 | Mitsubishi Electric Building Techno Service Co Ltd | Device for measuring amount of loosening of transmission strip for driving handrail of passenger conveyor |
| CN101423170A (en) * | 2007-11-01 | 2009-05-06 | 株式会社日立制作所 | Passenger transfer device |
| JP4915391B2 (en) * | 2008-05-19 | 2012-04-11 | 三菱電機ビルテクノサービス株式会社 | Elongation measuring device for passenger conveyor step chain |
| CN102417136A (en) * | 2010-09-27 | 2012-04-18 | 株式会社日立制作所 | Diagnosis device of passenger conveyor |
| CN104176609A (en) * | 2013-05-20 | 2014-12-03 | 东芝电梯株式会社 | Automatic handrail |
| CN203976201U (en) * | 2013-08-30 | 2014-12-03 | 东芝电梯株式会社 | Passenger conveyors |
-
2015
- 2015-07-09 JP JP2015137649A patent/JP6058755B1/en active Active
- 2015-12-07 CN CN201510888225.XA patent/CN106335837B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07137976A (en) * | 1993-11-16 | 1995-05-30 | Toshiba Corp | Chain elongation detector |
| JP2004099252A (en) * | 2002-09-10 | 2004-04-02 | Mitsubishi Electric Corp | Anomaly detector for passenger conveyor |
| CN101397113A (en) * | 2007-09-25 | 2009-04-01 | 株式会社日立制作所 | Diagnosis device of chain slack for passenger conveying equipment and diagnosis method |
| JP2009083941A (en) * | 2007-09-27 | 2009-04-23 | Mitsubishi Electric Building Techno Service Co Ltd | Device for measuring amount of loosening of transmission strip for driving handrail of passenger conveyor |
| JP2009084028A (en) * | 2007-10-02 | 2009-04-23 | Hitachi Building Systems Co Ltd | Diagnostic method of chain of passenger conveyor |
| CN101423170A (en) * | 2007-11-01 | 2009-05-06 | 株式会社日立制作所 | Passenger transfer device |
| JP4915391B2 (en) * | 2008-05-19 | 2012-04-11 | 三菱電機ビルテクノサービス株式会社 | Elongation measuring device for passenger conveyor step chain |
| CN102417136A (en) * | 2010-09-27 | 2012-04-18 | 株式会社日立制作所 | Diagnosis device of passenger conveyor |
| CN104176609A (en) * | 2013-05-20 | 2014-12-03 | 东芝电梯株式会社 | Automatic handrail |
| CN203976201U (en) * | 2013-08-30 | 2014-12-03 | 东芝电梯株式会社 | Passenger conveyors |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110271944A (en) * | 2018-03-13 | 2019-09-24 | 东芝电梯株式会社 | Diagnostic device and diagnostic method |
| US11150151B2 (en) | 2018-12-19 | 2021-10-19 | Otis Elevator Company | Method and device for monitoring chain tension |
| CN114072348A (en) * | 2019-10-31 | 2022-02-18 | 三菱电机大楼技术服务株式会社 | Auxiliary tool and method for checking chain of passenger conveyor |
| CN112875483A (en) * | 2019-11-29 | 2021-06-01 | 东芝电梯株式会社 | Chain slack detecting device of passenger conveyor |
| CN111268545A (en) * | 2020-01-16 | 2020-06-12 | 日立电梯（广州）自动扶梯有限公司 | Handrail area speed monitoring facilities and automatic running gear |
| CN111398620A (en) * | 2020-05-14 | 2020-07-10 | 上海爱登堡电梯集团股份有限公司 | Lateral detection device for speed measurement of double chain wheels of escalator |
| CN115916684A (en) * | 2020-06-23 | 2023-04-04 | 三菱电机楼宇解决方案株式会社 | Detection device and passenger conveyor |
| CN115916684B (en) * | 2020-06-23 | 2023-07-28 | 三菱电机楼宇解决方案株式会社 | Detection device and passenger conveyor |
| CN114057078A (en) * | 2020-08-05 | 2022-02-18 | 东芝电梯株式会社 | Chain extension detection device |
| CN114057078B (en) * | 2020-08-05 | 2024-01-09 | 东芝电梯株式会社 | Chain elongation detection device |
| CN112649294A (en) * | 2020-12-01 | 2021-04-13 | 中集物联科技有限公司 | Method and system for detecting abrasion elongation of chain |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017019616A (en) | 2017-01-26 |
| JP6058755B1 (en) | 2017-01-11 |
| CN106335837B (en) | 2018-01-09 |
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