CN106335837B - Passenger conveyors chain elongation detection means and passenger conveyors - Google Patents
Passenger conveyors chain elongation detection means and passenger conveyors Download PDFInfo
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- CN106335837B CN106335837B CN201510888225.XA CN201510888225A CN106335837B CN 106335837 B CN106335837 B CN 106335837B CN 201510888225 A CN201510888225 A CN 201510888225A CN 106335837 B CN106335837 B CN 106335837B
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Abstract
The present invention provides passenger conveyors chain elongation detection means and passenger conveyors, can in high precision, automatically detect the elongation of chain.Passenger conveyors chain elongation detection means (1) possesses：Driving wheel (17), is rotated by driving source；Driven pulley (13), using the driving force of driving wheel, rotated by chain (18)；Detected body (27,28), is respectively arranged at driving wheel and driven pulley；Sensor (29,30), fixed according to each detected body relative to the main frame of passenger conveyors, to detected body based on the rotation of revolution by detecting；And calculating part (31), obtain difference of the rotation from sensor by timing, and the time for obtaining passenger conveyors passes through the front and rear poor incrementss, calculating part calculates the elongation of chain according to the rotating diameter of incrementss, driving wheel angular speed and driven pulley.
Description
The application is based on Japanese patent application 2015-137649 (applying date is on July 9th, 2015), according to the Shen
Please and enjoy priority.The application is by referring to this application and including this application full content.
Technical field
The present invention relates to passenger conveyors chain elongation detection means and passenger conveyors.
Background technology
Escalator has each chains such as drive chain, handrail drive chain, step chain.In the past, regularly entered
Row Maintenance and Repair, the elongation of chain is adjusted in the Maintenance and Repair, even if so that chain is because the time is by changing
And chain can be also wrapping with certain tension force by extending (referring for example to patent document 1).In upkeep operation, such as in operation
Determine the elongation of step chain (referring for example to patent document 2).Chain is diagnosed by detecting the slack of drive chain
Elongation (referring for example to patent document 3).
Patent document 1：Japanese Unexamined Patent Publication 2015-48205 publications
Patent document 2：No. 4915391 publications of Japanese Patent Publication No.
Patent document 3：No. 5209015 publications of Japanese Patent Publication No.
But in upkeep operation, lifting board is dismantled and enters progress operation inside Machine Room by attendant, therefore
The operating of escalator must be stopped.Upkeep operation is legal requirement.But a few hours are shut down for user
It is more inconvenient.Attendant is with reference to operation manual.Attendant carries out measure of elongation etc. to enter by using ruler to chain
Row upkeep operation.For attendant, the inspection of overhauling project and required replacing also spend time labour.Even if
Upkeep operation is needed in safety, is commercially also desirable that upkeep operation does not take several hours.
The content of the invention
The present invention be in view of this problem and carry out, its object is to provide can in high precision, automatically detect chain
Elongation passenger conveyors chain elongation detection means and passenger conveyors.
In order to solve such problem, according to an embodiment of the invention, there is provided a kind of passenger conveyors chain
Extend detection means, it is characterised in that possess：Driving wheel, rotated by driving source；Driven pulley, utilize above-mentioned driving wheel
Driving force, rotated by chain；Detected body, it is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley；Sensor, according to
Each above-mentioned detected body is fixed relative to the main frame of passenger conveyors, and the rotation based on revolution to above-mentioned detected body is led to
Cross and detected；And calculating part, difference of the rotation from each sensor by timing is obtained, and obtain above-mentioned passenger conveyors
Time pass through front and rear above-mentioned poor incrementss, above-mentioned calculating part according to the angular speed of above-mentioned incrementss, above-mentioned driving wheel with
And the rotating diameter of above-mentioned driven pulley calculates the elongation of above-mentioned chain.
Can also be that above-mentioned detected body is metal object, the metal object is with being fixed on being nibbled with above-mentioned chain
Close multiple teeth sprocket wheel side one end 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 non-contact close to being detected to the above-mentioned detected body that is made up of metal
Formula sensor.
Can also be that above-mentioned calculating part is before the time during the operating of above-mentioned passenger conveyors passes through, to pass through each quilt
Detect body and each above-mentioned detected body adjusts relative to the positioning of sensor, make going out for the detection signal from each sensor
Now timing is consistent, and the time warp during above-mentioned operating obtains the variation of the appearance timing of above-mentioned detection signal later afterwards.
Can also be that above-mentioned calculating part is that before the time during the operating of above-mentioned passenger conveyors passes through, storage comes from
Detection timing offsets from each other the waveform of the sensor of a side of the state of the 1st time difference and the sensor of the opposing party, above-mentioned
Time warp during operating obtains the detection timing of the sensor of above-mentioned the opposing party relative to the sensor of one side later
The difference of timing, the 2nd time difference i.e. than above-mentioned 1st time difference greatly are detected, and obtains above-mentioned 1st time difference and above-mentioned 2nd time
The difference of difference.
Can also be that above-mentioned passenger conveyors are also equipped with chain elongation detection means：Converter, it is defeated to above-mentioned driving source
Go out to have carried out electric current the modulation electric current of pulse width modulation；And controller, output with from above-mentioned driving source towards above-mentioned conversion
Any one corresponding speed alteration command of multiple Output speed of device, controller noted above is with the usual fortune than above-mentioned driving wheel
Angular speed when turning small angular speed drives 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, there is provided a kind of passenger conveyors chain elongation detection means, it is special
Sign is possess：Driving wheel, rotated by driving source；Driven pulley, using the driving force of above-mentioned driving wheel, by chain and
Rotation；Disk, is arranged to coaxial above-mentioned driving wheel and above-mentioned driven pulley, and difference diametrically has through hole；Light projector
Portion, set according to each above-mentioned disk；Light accepting part, set according to each above-mentioned disk, respectively from above-mentioned through hole to coming
Light is carried out from the light of above-mentioned light-projecting portion；And calculating part, obtain the light timing that is detected according to each above-mentioned light accepting part
Difference, and the time for obtaining passenger conveyors pass through front and rear above-mentioned poor incrementss, above-mentioned calculating part according to above-mentioned incrementss, on
The angular speed of driving wheel and the rotating diameter of above-mentioned driven pulley are stated to calculate the elongation of above-mentioned chain.
Can also be that above-mentioned calculating part is that 1 point of the difference by timing of the revolution to each detected body is repeatedly examined
Survey, the above-mentioned poor value as obtained from repeated detection is averaged, and deviation value removing is carried out to above-mentioned difference and made an uproar
Sound reduction is handled.
In addition, according to another implementation of the invention, there is provided a kind of passenger conveyors, it is characterised in that possess：Drive
Dynamic source, it is arranged at the main frame of passenger conveyors；Driving wheel, rotated by above-mentioned driving source；Chain, pass through above-mentioned driving wheel
Driving force and annularly circulate；Driven pulley, rotated by above-mentioned chain；Detected body, it is respectively arranged at above-mentioned driving wheel
And above-mentioned driven pulley；Sensor, fix relative to above-mentioned main frame according to each above-mentioned detected body, be detected to above-mentioned
Body based on the rotation of revolution by being detected；And calculating part, difference of the rotation from each sensor by timing is obtained,
And the time for obtaining above-mentioned passenger conveyors passes through front and rear above-mentioned poor incrementss, above-mentioned calculating part according to above-mentioned incrementss,
The rotating diameter of the angular speed of above-mentioned driving wheel and above-mentioned driven pulley calculates the elongation of above-mentioned chain.
In accordance with the invention it is possible to elongation that is high-precision, automatically detecting chain.
Brief description of the drawings
Fig. 1 is the summary pie graph of the passenger conveyors of the 1st embodiment of the present invention.
Fig. 2 is the figure for the passenger conveyors composition of chain elongation detection means for representing the 1st embodiment of the present invention.
Fig. 3 is the driving source for the passenger conveyors chain elongation detection means for representing the 1st embodiment of the present invention
The figure of configuration example.
Fig. 4 is the block diagram of the passenger conveyors sensor of chain elongation detection means of the 1st embodiment of the present invention.
Fig. 5 be represent the passenger conveyors of the 1st embodiment of the present invention with a side of chain elongation detection means and
The figure of the sensor output of the opposing party.
Fig. 6 (a) is that the passenger conveyors for representing the 1st embodiment of the present invention are passed through with the time of chain elongation detection means
Cross the figure of the rotation position of preceding sensor and detected body.
Fig. 6 (b) is that the passenger conveyors for representing the 1st embodiment of the present invention are passed through with the time of chain elongation detection means
Cross the figure of preceding sensor output.
Fig. 7 (a) is that the passenger conveyors for representing the 1st embodiment of the present invention are passed through with the time of chain elongation detection means
Later sensor and the figure of the rotation position of detected body.
Fig. 7 (b) is that the passenger conveyors for representing the 1st embodiment of the present invention are passed through with the time of chain elongation detection means
Later the figure of sensor output.
Fig. 8 is for illustrating that the passenger conveyors chain elongation detection means of the 1st embodiment of the present invention makes sensing
The figure for the consistent method example of timing occur of device detection signal.
Fig. 9 (a) is that the passenger conveyors for representing the 2nd embodiment of the present invention are passed through with the time of chain elongation detection means
Cross the figure of the rotation position of preceding sensor and detected body.
Fig. 9 (b) is that the passenger conveyors for representing the 2nd embodiment of the present invention are passed through with the time of chain elongation detection means
Cross the figure of preceding sensor output.
Figure 10 (a) is to represent the passenger conveyors of the 2nd embodiment of the present invention with time of chain elongation detection means
Through sensor and the figure of the rotation position of detected body later.
Figure 10 (b) is to represent the passenger conveyors of the 2nd embodiment of the present invention with time of chain elongation detection means
The figure exported through sensor later.
Figure 11 is the pie graph of the passenger conveyors chain elongation detection means of the 3rd embodiment of the present invention.
Figure 12 be the passenger conveyors light-projecting portion of chain elongation detection means of the 3rd embodiment of the present invention, disk,
The stereogram of light accepting part.
Figure 13 is the structure for the passenger conveyors hardware of chain elongation detection means for representing the 4th embodiment of the present invention
Into the figure of example.
Figure 14 (a) is to represent the passenger conveyors of the 4th embodiment of the present invention with time of chain elongation detection means
The figure of sensor output before.
Figure 14 (b) is the driving for the passenger conveyors chain elongation detection means for representing the 4th embodiment of the present invention
The figure of sensor output of the source after being passed through based on the time of the 1st running speed.
Figure 14 (c) is the driving for the passenger conveyors chain elongation detection means for representing the 4th embodiment of the present invention
The figure of sensor output of the source after being passed through based on the time of the 2nd running speed.
Figure 15 is that the passenger conveyors for representing the 5th embodiment of the present invention are stretched with chain elongation detection means for chain
The chart of the data processing example of the detection of long amount.
Embodiment
Hereinafter, referring to figs. 1 to Figure 15 to the passenger conveyors of embodiments of the present invention with chain elongation detection means with
And passenger conveyors illustrate.In addition, assign identical symbol for same area in the various figures and omit saying for repetition
It is bright.
(the 1st embodiment)
Fig. 1 is the summary pie graph of the passenger conveyors of the 1st embodiment of the present invention.Passenger's conveying of present embodiment
Machine is disposed on the escalator between the levels ground of building.The passenger conveyors of present embodiment are detected with chain elongation
Device is disposed on the chain elongation detection means 1 of escalator.
Inclined main frame 10 is supported between upper strata and the lower floor of building.It is provided with the upper end side of main frame 10
Machine Room 11.Drive device 12, sprocket wheel 13 and control device 14 are provided with Machine Room 11.Drive device 12 has motor
15 and decelerator 16.Motor 15 has the horizontal output shaft parallel with main frame width.Decelerator 16 is to motor 15
Output torque is amplified.The outlet side of decelerator 16 is provided with sprocket wheel 17.Ring-type has been wrapping between sprocket wheel 17, sprocket wheel 13
Drive chain 18.In addition, driven sprocket wheel 20 is provided with the Machine Room 19 of the lower end side of main frame 10.Sprocket wheel 20 with
The step chain 21 for having ring-type is set up between sprocket wheel 13.To be linked with multiple steps 22 at equal intervals on step chain 21.
Fig. 2 is the figure for the passenger conveyors composition of chain elongation detection means for representing present embodiment.It is stated that
Symbol represents identical key element.Chain elongation detection means 1 is the device detected to the elongation of drive chain 18.Driving
Chain 18 is hung on the sprocket wheel 17 of the output shaft of decelerator 16 and towards between the sprocket wheel 13 of step 22.
Chain elongation detection means 1 possesses the sprocket wheel 17 (driving wheel) being driven and driven sprocket wheel 13 is (driven
Wheel).The sprocket wheel 17 being driven is rotated by drive device 12 (driving source).Driven sprocket wheel 13 utilizes the chain being driven
Wheel 17 driving force, by drive chain 18 (chain) and rotate.
The chain elongation detection means 1 of present embodiment possesses accessory 27,28 (detected body), noncontacting proximity sensor
29th, 30 (sensors) and calculating part 31.Accessory 27,28 is respectively arranged at sprocket wheel 17,13.Noncontacting proximity sensor 29,30 is pressed
Fixed according to each accessory 27,28 relative to the main frame 10 of escalator.29,30 pairs of accessories 27,28 of noncontacting proximity sensor
Based on the rotation of revolution by being detected.Calculating part 31 is obtained the rotation from noncontacting proximity sensor 29,30 and passed through calmly
When difference.The time that calculating part 31 obtains escalator passes through the incrementss that front and rear rotation passes through timing difference.Calculating part 31
The elongation of drive chain 18 is calculated according to the rotating diameter of incrementss, the angular speed of sprocket wheel 17 and sprocket wheel 13.
The decelerator 16 of drive device 12 (Fig. 1) is arranged on the platform 44 of Machine Room 11.Horse is provided with decelerator 16
Up to 15.Motor 15 controls rotation by control device 14.
Fig. 3 is the figure for the configuration example for representing driving source used in the escalator of present embodiment.Master is represented in figure 3
Composition near the drive chain 18 of the upper end side of framework 10.It is stated that symbol represent identical key element.In the horse of driving
Band driving pulley 23 is provided with up to 15 drive shaft.V bands 24 have been wrapping with band driving pulley 23.Motor 15 drives decelerator
16 input shaft 25.Sprocket wheel 17 is linked with the output shaft of decelerator 16.
Sprocket wheel 17 is decelerator sprocket wheel (following, sprocket wheel 17 is referred to as into drive sprocket 17 sometimes).Drive sprocket 17 passes through drive
Dynamic chain 18 carrys out rotation driving sprocket 13.Drive chain 18 is for example made up of the link of multiple chain links.The quilt of drive chain 18
Assign relaxation.For example, drive chain 18 moves in the state of drive chain 18 has been set up between sprocket wheel 17,13.Driving
The slack of chain 18 is adjusted to, and the downside in the upside of drive chain 18 and downside is in mobile drive chain 18
When chain central portion is bent, the amplitude of drive chain 18 turns into determined value.
Sprocket wheel 13 (below, is sometimes referred to as sprocket wheel 13 and driven sprocket wheel by the driving force from drive sprocket 17
Driven sprocket 13).Ladder sprocket wheel 26 (Fig. 1) is provided with to coaxial on driven sprocket 13.Driven sprocket 13 is via step chains
The driving step chain 21 of wheel 26.Drive sprocket 17 and driven sprocket 13 have different pitch diameter (Pitch Circle
Diameter).Pitch diameter refers to and is hung on the external diameter of a circle of the nodel line of the drive chain 18 of sprocket wheel 17.
In addition, as shown in Figure 2, the position of the side of drive sprocket 17 one is provided with the accessory 27 of detection.Accessory 27
On side.Accessory 27 and noncontacting proximity sensor 29 separate noncontacting proximity sensor 29 can detect accessory 27 away from
From.Accessory 27 is metal forming part.Accessory 27 has the projection of the other end of one end and side opposite with one end.The one of accessory 27
The side of drive sprocket 17 is fixed at end.Drive sprocket 17 has the multiple teeth engaged with drive chain 18.Accessory 27 it is another
The projection at end, from one end of accessory 27 than sprocket tooth top more towards drive sprocket 17 footpath outward.Accessory 27 is with driving
Movable sprocket 17 is integrally formed.Accessory 27 rotates around the rotary shaft of drive sprocket 17.Similarly, in the side of driven sprocket 13
Any is also equipped with accessory 28.Accessory 28 rotates with rotary shaft of the driven sprocket 13 integratedly around driven sprocket 13.Accessory 28
Also there is the projection of one end and the other end.The side of driven sprocket 13 is fixed in one end of accessory 28.The other end of accessory 28
Projection, from one end of accessory 28 than sprocket tooth top more towards driven sprocket 13 footpath outward.Accessory 27,28 uses
Has magnetic metal.Accessory 27,28 can for example use iron.
Noncontacting proximity sensor 29 detects accessory 27 in the top of drive sprocket 17.Noncontacting proximity sensor 29 to based on
The close of the accessory 27 of the revolution of part 27 is detected.Noncontacting proximity sensor 30 detects accessory in the top of driven sprocket 13
28.Noncontacting proximity sensor 30 detects to the close of accessory 28 of the revolution based on accessory 28.Noncontacting proximity sensor 29,
30 are all fixedly installed on the escalator frame (not shown) in main frame 10.Noncontacting proximity sensor 29,30 respectively with driving
Sprocket wheel 17, the correspondence of driven sprocket 13.
Fig. 4 is the block diagram of one for representing noncontacting proximity sensor 29.It is stated that symbol represent identical key element.It is non-to connect
Touch sensor 29 is for example with coil 61, oscillating circuit 62, detection circuit 63 and output circuit 64.Oscillating circuit 62 and line
The connection of circle 61.The impedance variations for detecting the coil 61 in the state of circuit 63 vibrates to oscillating circuit 62 detect.It is defeated
Go out circuit 64 and the variable quantity of impedance is detected by detecting circuit 63, the change as the output signal of voltage etc..When shaking
When swinging the coil 61 and close accessory 27 of state, increase towards the magnetic flux of accessory 27.By the electromotive force based on magnetic flux, in accessory
27 produce vortex flow.The magnetic flux being oppositely directed to of the accessory 27 based on vortex flow is produced in accessory 27.Due to the magnetic being oppositely directed to
Lead to and the impedance variations of coil 61.Voltage according to detection circuit 63 etc., such as output pulse signal of noncontacting proximity sensor 29.
Noncontacting proximity sensor 30 is also identical with noncontacting proximity sensor 29.
In addition, Fig. 5 is represented under Fig. 4 oscillatory regime, drive sprocket 17 and driven sprocket 13 are with certain circumference speed
Degree has carried out the rotation detection signal of the noncontacting proximity sensor 29 and noncontacting proximity sensor 30 in the case that rotation is advanced.
Fig. 5 be represent noncontacting proximity sensor 29 (sensor of a side) and noncontacting proximity sensor 30 (the opposing party's
Sensor) respective output waveform example figure.It is stated that symbol represent identical key element.Detection signal 66,67 is come respectively
From the signal waveform of the pulse type of the noncontacting proximity sensor 29,30 of original state.In addition, the number of detection signal 66,67 with
And detection signal 66,67 at intervals of illustration, the interval being not limited in the figure.So-called original state refers to carry out position
The state that the position adjustment of adjustment is completed.In the state of position adjustment completion, noncontacting proximity sensor 29,30 and accessory
27th, 28 respective positions are adjusted to, and the mutual detection timing of noncontacting proximity sensor 29,30 is consistent.Voltage representative signals
(signal) voltage.
The close of 29,30 pairs of accessories 27,28 of noncontacting proximity sensor detects.By the usual operating of escalator,
When drive sprocket 17 and 13 respective sprocket shaft of driven sprocket rotate a circle, noncontacting proximity sensor 29,30 detects one
Secondary accessory 27,28 approaches.The peripheral speed of drive sprocket 17 is equal with the peripheral speed of driven sprocket 13 in usual operating.
The pitch diameter of drive sprocket 17 is less than the pitch diameter (Fig. 2) of driven sprocket 13 in usual operating.The rotation of drive sprocket 17
Turn the number of revolutions that number is more than driven sprocket 13.Because the number of revolutions of drive sprocket 17 is larger, therefore it is adjusted to from non-
Detection of the probe interval of the detection signal 66 of touch sensor 29 than the detection signal 67 from noncontacting proximity sensor 30
It is spaced short (Fig. 5).
In addition, Fig. 2 calculating part 31 electrically connects with noncontacting proximity sensor 29,30.Calculating part 31 is persistently inputted 2 and is
The detection signal of system.On the basis of the timing initially set is used as by calculating part 31.The so-called timing initially set refers to 2 systems
Detection timing it is consistent at the time of cycle for arriving.
Every some certain intervals, noncontacting proximity sensor 29 just be present detects timing and noncontacting proximity sensor 30
At the time of detection timing is consistent (part that enclosed with dashed lines is used in reference picture 5).In the operating of escalator, drive sprocket 17 with
And each sprocket shaft of driven sprocket 13 persistently rotates.Due to lasting rotation, thus Occasion cycle arrive repeatedly.The moment is
Detection timing and the detection signal 67 from noncontacting proximity sensor 30 of detection signal 66 from noncontacting proximity sensor 29
Detection timing it is consistent at the time of.
Chain elongation detection means 1 is by initially setting and as the detection signal between noncontacting proximity sensor 29,30
The consistent state of timing.Calculating part 31 calculates the incrementss of the front and rear time difference during operating.By passing through during operating
The detection timing of preceding noncontacting proximity sensor 29,30 and the comparison of the detection timing after being passed through during operating, calculating part 31 are counted
Calculate incrementss.In other words, calculating part 31 is before the time during the operating of escalator passes through, by accessory 27,28 and
The positioning adjustment of noncontacting proximity sensor 29,30, make the appearance timing one of the detection signal from noncontacting proximity sensor 29,30
Cause.For calculating part 31 after making appearance timing consistent, time warp during operation obtains the appearance of detection signal regularly later
Variation.
Calculating part 31 is also implemented to obtain drive chain 18 in addition to the signal detection of noncontacting proximity sensor 29,30
Elongation L computing etc..Incrementss of the calculating part 31 based on detection timing carry out computing to elongation L.Calculating part 31 uses drive
The pitch diameter of movable sprocket 17 and the pitch diameter of driven sprocket 13 are calculated.The function of calculating part 31 can also by based on
CPU, ROM, RAM CPU software performs.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
The change that Fig. 8 extends the detection timing of front and rear noncontacting proximity sensor 29,30 to drive chain 18 illustrates.With reference to driving
Chain 18 extend before original state under detection timing (Fig. 6) and escalator is operated and drive chain 18 is stretched during growing
Detection timing (Fig. 7) after length illustrates.
First, in initially set escalator, by the operation of attendant, chain elongation detection means 1 performs just
Begin to set operation.
Fig. 6 (a) be represent the time pass through before noncontacting proximity sensor 29,30 and accessory 27,28 rotation position
Figure.Fig. 6 (b) be represent the time pass through before noncontacting proximity sensor 29,30 output waveform example figure.It is stated that symbol table
Show identical key element.Detection signal 66,67 represents the waveform from noncontacting proximity sensor 29,30 respectively.In Fig. 6 (a), Fig. 6
(b) waveform example before the elongation of drive chain 18 is represented in.Represent to operate accessory 27,28 and contactless by attendant
Waveform example of the position adjustment of sensor 29,30 for the timing of both noncontacting proximity sensors 29,30 after consistent.It is assumed that driving
The rotation (when rising operating) to the right of chain 18.
Herein, to the detection waveform from noncontacting proximity sensor 29 and the detection waveform from noncontacting proximity sensor 30
It is compared.By comparing, attendant aligns to each position of accessory 27,28 and noncontacting proximity sensor 29,30,
So as to the position relationship as Fig. 6 (a).It is consistent and the detection timing of noncontacting proximity sensor 29,30 by contraposition.Meshing point 68
Represent one of point that driven sprocket 13 engages with drive chain 18.Meshing point 68 is, for example, a position on pitch circle (dotted line).
Fig. 8 is the method example consistent for the appearance timing to making the detection signal from noncontacting proximity sensor 29,30
The figure illustrated.It is stated that symbol represent identical key element.Detection signal 66 from drive sprocket 17 and come since
The detection signal 67 of movable sprocket 13 inputs towards chain elongation detection means 1.When rising the detection signal 66 frequently occurred, meter
Calculation portion 31 just by the rising edge of detection signal 66 at the time of be stored in RAM.Calculating part 31 is asked at the time of detection signal 67 rises
Go out the rising time of detection signal 67 and difference at the time of detection signal 66 from RAM.
As concrete example, in moment T1, calculating part 31 detects that detection signal 67 rises.In moment T1, calculating part 31 is asked
The difference t for the time for going out the rising edge of detection signal 67 between the rising edge of detection signal 66 that occurs before moment T1.Meter
Calculation portion 31 is compared to whether poor t is in the threshold value pre-saved.In the case where poor t is more than threshold value, calculating part 31 is asked
The difference s of the time gone out between moment T1 and the rising edge of the detection signal occurred after time tl 66.Calculating part 31 is to poor s
It is no to be compared in threshold value.In the case where poor s is more than threshold value, calculating part 31 then carries out identical comparison in moment T2
Computing.
In moment T2, calculating part 31 obtains the rising edge of moment T2 detection signal 67 and the detection signal before and after moment T2
Difference s, t of each time between 66 rising edge.In the case where poor s, t are not located in threshold value, calculating part 31 then exists
Moment T3 carries out identical comparison operation.
In moment T3, calculating part 31 obtains the rising edge of moment T3 detection signal 67 and the inspection occurred before moment T3
The difference t for the time surveyed between the rising edge of signal 66.In the case where poor t is in threshold value, calculating part 31 is defeated to unanimously carrying out
Go out.Moment T3 is stored in RAM by calculating part 31.Detection signal 67 is consistent at the time of rising at the time of rising with detection signal 66.
The consistent situation of detection timing is detected in moment T3.Hereby it is achieved that detection signal 66, the rising edge of 67 respective pulses are in phase
Occurs this situation in the same time.
As Fig. 6 (b), the detection signal of 2 systems is to be arrived at the time of detection timing is consistent at regular intervals.
The cycle that calculating part 31 can also arrive at the time of will be consistent is stored in RAM as the timing initially set.
Afterwards, escalator (Fig. 1) is persistently generally operated daily.Escalator makes step chains by drive sprocket 17
The rotation of wheel 26.Multiple circulations of step 22 are advanced.In the case where loop direction is rises operating, taken from the stopping port 42 of lower floor
People transported to the stopping port 43 on upper strata.In the case of opposite in the direction of rotation of drive sprocket 17, escalator carries out phase
Anti- decline operating.
After the long-standing operating of escalator, manager is for the maintenance of the progress chain in the operating of escalator
Maintenance, and the switch of the determination of operating control device 14.Switching manipulation in the operating that control device 14 passes through escalator etc.
And escalator is set to start the detection of chain elongation amount.
Fig. 7 (a) be represent the time warp after noncontacting proximity sensor 29,30 and accessory 27,28 rotation position
Figure.Fig. 7 (b) be represent the time warp after noncontacting proximity sensor 29,30 output waveform example figure.It is stated that symbol table
Show identical key element.Detection signal 66,67 represents the waveform from noncontacting proximity sensor 29,30 respectively.In Fig. 7 (a), Fig. 7
(b) change of the detection timing in the case where drive chain 18 after being operated during escalator is grown extends is represented in.
Drive chain 18 and driven sprocket 13 are all to right rotation.In the case where drive chain 18 extends, such as Fig. 7 (a)
Like that, the position of drive chain 18 and the meshing point of driven sprocket 13 68 relative to drive sprocket 17 direction of rotation towards the rear
Skew.It is constant when drive chain 18 and the number of teeth and normal tooth pitch of the tooth of driven chain gear teeth meshing.Due to be constant, so driven
Sprocket wheel 13 is offset toward the rear side with the position that drive chain 18 engages relative to direction of rotation.The anglec of rotation phase of drive sprocket 17
Change for the anglec of rotation of the drive sprocket 17 of original state towards delay side.Due to changing, so accessory 27 is by non-
The timing of touch sensor 30 passes through constant time lag relative under original state.
Detection timing (Fig. 6 (b)) before being extended relative to drive chain 18, as Fig. 7 (b), the spy after time warp
Generation time δ skew during measure.Rising edge has offset from each other the time δ arrival of detection signal 66,67 at regular intervals.
Then, calculating part 31 carries out calculating calculation process by making CPU, ROM, RAM configuration processor.It is fixed that CPU will be detected
When δ and elongation L equivalences deploy in RAM.CPU performs following computing according to the program coding from ROM.
Relation between detection timing δ and the elongation L of drive chain 18 is illustrated.Calculating part 31 passes through formula (1)
Obtain delay-angle β when drive chain 18 has extended L.
β=2L/PCD (rad) ... (1)
PCD is the pitch diameter of driven sprocket 13.L is that drive chain 18 takes turns (driven sprocket 13, drive sprocket at two
17) elongation among.
In addition, the angular velocity of rotation of driven sprocket 13 is set to ω (rad/s).Calculating part 31 calculates the time by formula (2)
δ.Time δ is that accessory 28 was rotated to the time required for the position that can be detected by noncontacting proximity sensor 30.
δ=β/ω (s) ... (2)
Calculating part 31 is examined to noncontacting proximity sensor 29 and the skew δ of the detection timing of noncontacting proximity sensor 30
Survey.Calculating part 31 extends L by formula (1), the inverse operation of (2), using formula (3) to calculate drive chain.
L=δ × PCD × ω/2 ... (3)
As described above, it is non-contact by 2 according to the passenger conveyors of present embodiment chain elongation detection means
Formula sensor 29,30 and be arranged at drive sprocket 17, driven sprocket 13 each side accessory 27,28, it becomes possible to correctly
Detect the elongation of drive chain 18.The detection of the elongation of chain 18 can be driven with low-down cost.
For example, can be measured in daily start working to chain elongation, the raising of security is realized.It can reduce
Time, maintenance number and the repair rate of upkeep operation, can suppress the expense required for Maintenance and Repair.
In addition, according to the passenger conveyors of present embodiment chain elongation detection means and passenger conveyors, can
High accuracy, the elongation for automatically detecting drive chain 18.In order to carry out chain upkeep operation, attendant need not be by lifting board
Dismantle and enter Machine Room 11 to carry out operation.Chain elongation can be detected not the operating for stopping escalator.Being capable of pole
Power reduces the time that operating stops.Or the time that operating stops can be eliminated.It is more convenient for user.Attendant
Without arriving scene every time.In the overhauling project of escalator, for chain elongation measure repair rate reduce.For
It is commercially advantageous for the manager of building.Not excessively increase repair rate or maintenance number, it becomes possible to maintain
Security.
Summarized to more than, chain elongation detection means 1 is, in the drive sprocket 17 and driven chain of drive chain 18
A bit of 13 respective peripheries is taken turns, is provided through the accessory 27,28 of detection.Accessory 27,28 be fixed on each sprocket wheel and with it is each
Sprocket wheel rotates together with.In addition, chain elongation detection means 1 is, it is configured with the affixed side of escalator to the logical of accessory 27,28
Cross the noncontacting proximity sensor 29,30 detected.Chain elongation detection means 1 is configured to, and can detect respectively in operation
The timing that the accessory 27 of drive sprocket 17 and the accessory 28 of driven sprocket 13 pass through.
In drive chain 18 due to long-term use etc. and in the case of producing elongation, driven sprocket 13 is nibbled with drive chain 18
The time delay of the conjunction amount corresponding with elongation.Due to delay, so the accessory of driven sprocket 13 is relative by the timing of detection
Relatively postponed by the timing of detection in the accessory of drive sprocket 17.The skew of timing and the elongation of drive chain 18 into than
Example.Due to proportional, so chain elongation detection means 1 is configured to, can be detected by the skew to the time come to driving
The elongation of dynamic chain 18 is detected.
In addition, whichever chain such as drive chain 18, handrail drive chain, step chain 21 all has drive sprocket
17 and driven sprocket 13.If drive sprocket 17 that chain elongation detection means 1 all necessarily has to whichever chain and from
Movable sprocket 13 sets accessory 27,28 and noncontacting proximity sensor 29,30 respectively.Driven with drive chain 18, handrail
The species of the chains such as chain, step chain 21 is unrelated, and chain elongation detection means 1 can pass through the elongation with drive chain 18
The detection method identical method of amount detects chain elongation according to each chain species.
In addition, according to chain elongation detection means 1, without setting the encoder of high price.Only set by minimally
Add up to two inexpensive noncontacting proximity sensors 29,30, chain elongation detection means 1 just can accurately detect drive chain
The elongation of bar 18.Due to elongation can be detected, so the detecting system of low cost can be built.
(the 2nd embodiment)
In above-mentioned 1st embodiment, chain elongation detection means 1 is needed before drive chain 18 extends by initially setting
Surely the consistent operation of detection timing is made.The present invention the 2nd embodiment passenger conveyors with chain elongation detection means without
Crossing initial setting can just be calculated.
Chain elongation detection means 2 (the passenger conveyors chain elongation detection means of the 2nd embodiment) possesses calculating
Portion 31 (Fig. 2).The preceding detection timing of time process during calculating part 31 prestores the operating of next comfortable escalator is mutual inclined
Move the waveform of the noncontacting proximity sensor 29,30 of δ 1 (the 1st time difference) state.Also, calculating part 31 during operation when
Between through later obtain δ 2 (the 2nd time difference).δ 2 is the detection timing of noncontacting proximity sensor 30 relative to noncontacting proximity sensor
The difference of 29 detection timing, more than δ 1.The detection of noncontacting proximity sensor 30 is regularly relative to the spy of noncontacting proximity sensor 29
Survey constant time lag δ 1.Calculating part 31 obtains δ 1 and δ 2 difference.
For point in addition, negate as long as no special, then the composition of chain elongation detection means 2 and above-mentioned chain
The composition for extending detection means 1 is identical.
Then, 9~Figure 10 of reference picture is detected with chain elongation to the passenger conveyors of the present embodiment of above-mentioned composition and filled
The action put illustrates.
Fig. 9 (a) be represent chain elongation detection means 2 time pass through before noncontacting proximity sensor 29,30 and match somebody with somebody
The figure of the rotation position of part 27,28.Fig. 9 (b) be represent the time pass through before noncontacting proximity sensor 29,30 output waveform example
Figure.It is stated that symbol represent identical key element.Meshing point 69 rotates towards the direction of rotation to the right of drive chain 18.Detection letter
Numbers 66,67 represent the waveform from noncontacting proximity sensor 29,30 respectively.
Chain elongation detection means 2 be respectively arranged with the side of drive sprocket 17 and driven sprocket 13 accessory 27,
28.Chain elongation detection means 2 is provided with the noncontacting proximity sensor 29,30 detected to accessory 27,28.Chain elongation is examined
Survey device 2 be, by accessory 27,28 respectively in Fig. 9 (a) relative to surface to be arranged at clockwise, counterclockwise
Arbitrary angle position.In the example of the Fig. 9 (a), with the detection timing of noncontacting proximity sensor 30 than contactless biography
The state of the detection constant time lag of sensor 29 sets these noncontacting proximity sensors 29,30.
As shown in Fig. 9 (b), before the elongation of drive chain 18, the detection of noncontacting proximity sensor 29 timing with it is contactless
The detection timing of sensor 30 has been offset.Calculating part 31 obtains has offset from each other (the 1st times of time δ 1 from detection timing
Difference) state noncontacting proximity sensor 29,30 waveform.Acquired delay is set to δ 1.
Figure 10 (a), Figure 10 (b) represent the spy in the state of after drive chain 18 after being operated during escalator is grown extends
Change during measure.
Figure 10 (a) be represent the time warp after noncontacting proximity sensor 29,30 and accessory 27,28 rotation position
Figure.Figure 10 (b) be represent the time warp after noncontacting proximity sensor 29,30 output waveform example figure.It is stated that symbol
Represent identical key element.Detection signal 66,67 represents the waveform from noncontacting proximity sensor 29,30 respectively.
It is identical with the 1st embodiment as Figure 10 (a), due to drive chain 18 elongation and meshing point 69 relative to
Direction of rotation is offset towards the rear.Meshing point 69 is the position that drive chain 18 engages with the side of driven sprocket 13.Driven sprocket 13
Anglec of rotation amount produces delay.Due to the delay of anglec of rotation measurement, therefore as Figure 10 (b), noncontacting proximity sensor 30
Detection is regularly relative to the detection constant time lag of noncontacting proximity sensor 29.The time delay for the difference for representing detection timing is set to
δ 2 (the 2nd time difference).δ 2 is more than δ 1.Further produce of time delay δ 1 before δ 2 extends than drive chain 18 postpones.
Herein, calculating part 31 is calculated using formula (4).
δ 3=δ 2- δ 1 ... (4)
Calculated δ 3 is represented due to the elongation of drive chain 18 and the delay of caused detection timing.Calculating part 31 uses
δ 3, by being calculated, according to the formula (3) of above-mentioned 1st embodiment with the calculating identical of the 1st embodiment, to drive chain 18
Elongation L detected.
In the present embodiment, without closely adjusting drive sprocket 17 in the setting construction in initially set stage
Detection timing between noncontacting proximity sensor 29 and the noncontacting proximity sensor 30 of the side of driven sprocket 13.Due to by without
The setting operation of the adjustment operation of the position of accessory 27,28 and noncontacting proximity sensor 29,30, so energy can be obtained
This effect of adjustment time during escalator installation is enough greatly shortened.
(the 3rd embodiment)
In above-mentioned 1st embodiment, noncontacting proximity sensor is respectively arranged with for drive sprocket 17, driven sprocket 13
29th, 30, but the passenger conveyors chain elongation detection means of the 3rd embodiment of the present invention can also use replacement non-contact
The sensor of formula sensor 29,30.
Figure 11 is the pie graph of the passenger conveyors chain elongation detection means of the 3rd embodiment of the present invention.Figure 12
It is the stereogram 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 13, disk
33 and disk 34.It is arranged at drive sprocket 17 and driven sprocket 13 to disk 33 and the coaxial of disk 34.Disk 33,34
Difference diametrically has exploration hole 32 (through hole).Also, as shown in Figure 12, chain elongation detection means 3 is also equipped with light projector
Portion 35, light accepting part 36 and calculating part 31.Light-projecting portion 35 sets according to each disk 33,34 and (only represents a side).Light
Portion 36 carries out light from exploration hole 32 to the light from light-projecting portion 35 respectively.Light accepting part 36 is set according to each disk 33,34.
Calculating part 31 obtains the difference of the light timing detected according to each light accepting part 36.Calculating part 31 obtains the time warp of escalator
Cross the incrementss of the difference of front and rear light timing.Calculating part 31 is according to incrementss, the angular speed and driven chain of drive sprocket 17
The rotating diameter of wheel 13, to calculate the elongation of drive chain 18.Chain elongation detection means 3 is, in addition to these key elements
Composition it is identical with the composition of chain elongation detection means 1.
Disk 33,34 is circular detection disk.Disk 33,34 is respectively with identical with drive sprocket 17, driven sprocket 13
Angular speed rotated.A position opening on each disk 33,34 on disk has exploration hole 32.Light-projecting portion 35 is light
Electric transducer light-projecting portion.Light-projecting portion 35 has the output element of LED light or laser.Light accepting part 36 has photo detector.Light
Element carries out opto-electronic conversion to the detection light for having passed through exploration hole 32.
Then, in the chain elongation detection means 3 of above-mentioned composition, drive sprocket 17 and driven sprocket 13 revolve respectively
Turn.During drive sprocket 17 and driven sprocket 13 rotate a circle, the light from each light-projecting portion 35 is only in each exploration hole
By once in 32.Each light accepting part 36 is reached by light.Each light accepting part 36 detects the logical of exploration hole 32 according to each sprocket wheel
Cross timing.
The action and effect of chain elongation detection means 3 are identical with the example of the 1st embodiment.Stretched in drive chain 18
Before length, attendant makes the detection of drive sprocket 17 and driven sprocket 13 timing consistent beforehand through initial setting.Chain
Determining to obtain the detection for the skew for generating time δ timing after the elongation passage time of detection means 3 warp.Chain elongation is examined
Survey device 3 and L is extended to obtain drive chain by above-mentioned formula (3).
Or it is identical with the example of the 2nd embodiment, even if attendant is without initial setting, chain elongation detection
Device 3 can also be calculated.Chain elongation detection means 3 can also the time pass through after, according to noncontacting proximity sensor
The 29 detection timing for detecting the relative noncontacting proximity sensor 30 of timing, time δ 1, δ 2 are obtained by above-mentioned formula (4), and
Calculate drive chain elongation L.
In the present embodiment, due to using producing the light-projecting portion 35 of light, therefore the position of light beam can be observed and reliable
Ground adjusts each position of light-projecting portion 35 and light accepting part 36.Due to can reliably adjust, thus when escalator is installed by
The setting and adjustment operation for the photoelectric sensor for including light-projecting portion 35 and light accepting part 36 that attendant is carried out become easy.
For setting the time of adjustment to shorten compared with the time of the setting adjustment of noncontacting proximity sensor 29,30.
(the 4th embodiment)
In above-mentioned 1st embodiment, calculating part 31 is performed by CPU software, but the function of calculating part 31 also can be by
Hardware performs.Calculating part 31 can also for example use the programmable logic controller (PLC) (PLC) of convertor controls.Above-mentioned calculating
It can also be performed by inputting the signal of noncontacting proximity sensor 29,30 towards programmable logic controller (PLC).
Figure 13 is the structure for the passenger conveyors hardware of chain elongation detection means for representing the 4th embodiment of the present invention
Into the figure of example.It is stated that symbol represent identical key element.
Chain elongation detection means 4 possesses converter 40 and programmable logic controller (PLC) (PLC) 37.Converter 40 is to electricity
Flow into horizontal pulse width modulated.Converter 40 is inputted electric current is modulated to drive device 12 (Fig. 1).Programmable logic controller (PLC)
(PLC) 37 outputs refer to any one corresponding speed change of multiple Output speed from drive device 12 to converter 40
Order.Angular speed when programmable logic controller (PLC) 37 is with than the usual operating of drive sprocket 17 small angular speed drives driving to fill
Put 12 motor 15.
Motor 15 is asynchronous motor (inductor motor).The direction of rotation of motor 15 and angular speed pass through converter control
Make to control.
The drive motor 15 of converter 40.Multiple velocity modes are prerecorded with converter 40.Converter 40 is via letter
Number lead-out terminal 38 is connected with programmable logic controller (PLC) 37.Programmable logic controller (PLC) 37 is epigyny device.FPGA
Controller 37 is controlled to the overall operating of escalator.Programmable logic controller (PLC) 37 exports according to situation towards converter 40
The alteration command of velocity mode.
Converter 40 is prerecorded with the velocity mode of low speed.Converter 40 from programmable logic controller (PLC) 37 receive to appoint
The alteration command of one speed.According to the alteration command towards converter 40, it can easily implement the low-speed running of motor 15.
In addition, it is connected to noncontacting proximity sensor on the signal input terminal 39 of programmable logic controller (PLC) 37
29、30.Programmable logic controller (PLC) 37 has the calculation function that computing is carried out to the signal inputted.Programmable logic controller (PLC)
The detection timing (rising of value) of 37 pairs of noncontacting proximity sensors 29,30 detects.The rising of so-called value refers to connect from non-
The rising of the value of the pulse signal of touch sensor 29,30.Programmable logic controller (PLC) 37 can calculate noncontacting proximity sensor
29th, the 30 detection timing difference for detecting timing and being capable of storing initial.
On composition in addition, chain elongation detection means 4 is identical with the composition of chain elongation detection means 1.
Figure 14 (a) is to represent the passenger conveyors of the 4th embodiment of the present invention with time of chain elongation detection means
The figure of the output waveform example of noncontacting proximity sensor 29,30 before.In Figure 14 (a)~Figure 14 (c), it is stated that symbol
Represent identical key element.In Figure 14 (a)~Figure 14 (c), detection signal 66,67 represents to come from noncontacting proximity sensor respectively
29th, 30 waveform.
Then, the passenger conveyors of the present embodiment of above-mentioned composition are said with the action of chain elongation detection means
It is bright.
Programmable logic controller (PLC) 37 make the running speed of escalator than it is usual when running speed it is slow.As one,
1/4 of running speed when running speed is reduced into usual.It is contactless due to the reduction of running speed as the figure
The interval variation of the waveform of sensor 29.
First, attendant is to the detection waveform from noncontacting proximity sensor 29 and from noncontacting proximity sensor 30
Detection waveform is compared reference.Attendant is carried out pair to each position of accessory 27,28 and noncontacting proximity sensor 29,30
Position, to export Figure 14 (a) waveform.By position adjustment, chain elongation detection means 4 makes noncontacting proximity sensor 29,30
Detection timing it is consistent.
By making the consistent adjustment of the detection timing of noncontacting proximity sensor 29,30, thus before the elongation of drive chain 18
Original state under, it is unrelated with running speed, noncontacting proximity sensor 29 detection timing and noncontacting proximity sensor 30 spy
It is equal during measure.As Figure 14 (a), detection signal waveform unrelated with the change of running speed does not change.
Figure 14 (b) be represent chain elongation detection means 4 time warp after based on the contactless of the 1st running speed
The figure of the output waveform example of sensor 29,30.Programmable logic controller (PLC) 37 remains the running speed of escalator generally
When running speed it is constant.In the state of the elongation of drive chain 18, it is assumed that during the skew for increased detection timing of starting from scratch
Between be δ 1.That is, from detection timing offset from each other δ 1 state noncontacting proximity sensor 29,30, detect detection signal 66,
67 waveform.So-called running speed substantially refers to the peripheral speed of motor 15.
Figure 14 (c) be represent chain elongation detection means 4 time warp after based on the contactless of the 2nd running speed
The figure of the output waveform example of sensor 29,30.Represent programmable logic controller (PLC) 37 make based on it is usual when running speed from
Dynamic staircase operating temporarily ceases, and 1/4 of running speed when running speed being reduced into usual after a stop, make to help automatically again
Ladder operating, after the time passes through, the result that is detected in the same manner as Figure 14 (b) example.The shape that drive chain 18 is extended
The shift time of detection timing under state is set to δ 2.
The running speed of escalator is reduced to 1/4.Due to the running speed for 1/4, so the rotation of driven sprocket 13
Angular velocity omega also turns into 1/4.Detection time delay δ 2 turns into δ 2=4 δ 1." " represents multiplying.δ 2 is when being based on usual
Running speed time delay 4 times of time difference (with reference to formula (2)).
Assuming that escalator running speed completely it is constant without change and noncontacting proximity sensor 29,30 detection
Timing is completely correct.If running speed is constant and detection timing is correct, even if determining data by low-speed running,
Detection results are nor sufficiently.But the running speed of escalator somewhat changes sometimes.Based on noncontacting proximity sensor
29th, the detection timing of the photoelectric sensor such as 30 or light-projecting portion 35, light accepting part 36 (Figure 13), produces small variation sometimes.
Therefore, detection timing is possible to produce small error.In the chain elongation detection means 4 of present embodiment, detection delay
Time δ 2 be based on it is usual when 4 times of time delay of running speed.Noncontacting proximity sensor 29,30 detection timing be,
Also hardly changed even in reducing to be detected under the situation of running speed.Even in the shape for reducing running speed
Detected under condition, the running speed of escalator also hardly changes.Due to hardly changing, so being for example
The running speed for making to have escalator, the change of the detection timing based on noncontacting proximity sensor 29,30 or photoelectric sensor
It is dynamic, also can by caused by the influence of the variation attenuating of accuracy of detection be reduced to 1/4.
In addition, programmable logic controller (PLC) 37 can also by running speed relative to it is usual when running speed speed ratio
It is set as the speed ratio different from 1/4.Programmable logic controller (PLC) 37 can also examine chain elongation identically with above-mentioned example
Device 4 is surveyed to act.Carried out even in by offset of the different speed than the detection timing to noncontacting proximity sensor 29,30
In the case of detection, chain elongation detection means 4 can also reduce the reduction of accuracy of detection.The energy of chain elongation detection means 4
Enough by the influence of the variation of the detection timing due to the running speed of escalator, based on noncontacting proximity sensor 29,30 etc.
The reduction of caused accuracy of detection, will be as little as with speed than corresponding amount.
Present embodiment passenger conveyors with chain elongation detection means, can reduce driven sprocket 13 and drive
The variation by detecting timing of movable sprocket 17 influences to caused by the accuracy of detection of the elongation of drive chain 18.It can reduce
The variation by detecting timing based on noncontacting proximity sensor 29,30 and photoelectric sensor (Figure 13) etc. is made to accuracy of detection
Into influence.
(the 5th embodiment)
In each embodiment of above-mentioned 1st~the 4th embodiment, following processing can also be carried out to detection data.
The passenger conveyors of the 5th embodiment of the present invention are to be provided with calculating part 31 with chain elongation detection means
Data processing division 41 (Fig. 2).1 point of revolution of the data processing division 41 to accessory 27,28 is repeatedly examined by the difference of timing
Survey.Data processing division 41 averages multiple poor values as obtained from repeated detection.Data processing division 41 is to passing through
Difference obtained from equalization carries out the lower noise processing of deviation value removing.Data processing division 41 is based on CPU, ROM, RAM.On
Point in addition, as long as especially not negating below, then the passenger conveyors of present embodiment are detected with chain elongation and filled
Put identical with the composition of above-mentioned chain elongation detection means 1.
Figure 15 is to represent that the passenger conveyors of present embodiment are used to carry out chain elongation amount with chain elongation detection means
Detection data processing example chart.
The passenger conveyors of the present embodiment of this composition are with chain elongation detection means, such as implement by the 1st
The method of mode and calculating part is implemented to calculate measure for more than 31 times.Figure 15 transverse axis represent the 1st time, the 2nd time ..., n-th so
Measure numbering.The true value (second) of the time of the detection timing for a little representing noncontacting proximity sensor 29,30 of the longitudinal axis.N times
Measured value is distributed near true value.
In drive sprocket 17 and driven sprocket 13 are detected by timing, the micro- of escalator itself is produced sometimes
Small speed fluctuation or the small change of detection timing of noncontacting proximity sensor 29,30 etc..Due to small change, survey
Definite value is slightly offset compared with true value.In addition, hold according to the difference of the time-bands of morning and evening or between floors party
When, a large amount of passengers be present while take in step 22.According to the difference of time-bands or due to holding party, also deposit
In the temporarily-depressed situation of the running speed of escalator.Running speed reduce in the case of measured value sometimes with n times
The larger deviation of other measured values.
Assuming that judge to extend according to the measured value of 1 time.In the judgement based on the measured value of 1 time, as long as measurement system
Obtain measured value with there can be enough precision, then have no problem.But in the inadequate feelings of measurement accuracy of measurement system
Under condition, measured value is possible to produce error in the measure of 1 time.The chain elongation detection means of present embodiment obtains multiple inspection
The average value of survey.In addition, as shown in Figure 15, data processing division 41 performs the processing for removing data 45 etc..Data 45 have
The deviation value deviateed with exceeding the setting of above-below direction on y direction from average value.More accurate chain can be detected to stretch
It is long.
In addition, not to be defined in above-mentioned embodiment directly such by the present invention, its purport is not being departed from implementation phase
In the range of inscape can be deformed and be embodied.In the above-described embodiment, passenger conveyors can also be activity
Pavement.
In the above-described embodiment, calculating part 31 can also use the pitch diameter and driven sprocket 13 of driven sprocket 13
Rotation number.The anglec of rotation (rad/s) that time per unit can certainly be replaced is angular speed, and uses the rotation of time per unit
Number (1/s) is rotation number.For only passing through the calculating based on the simple substitute between angular speed and rotation numerical
And the implementation part implemented, the superiority of the passenger conveyors chain elongation detection means of embodiments of the present invention will not be by
Any loss.
Pitch diameter PCD represents (ISO 606 or JIS B 1802) by PCD=P/ [sin (180/T) °].Herein, P is
Chain pitch, T are teeth number of sprocket.
In the above-described embodiment, detection sensitivity that can be according to noncontacting proximity sensor 29 to accessory 27, to change
The shape and size of accessory 27 (and accessory 28).When the size of accessory 27 is less than the size of coil 61, detection sensitivity
Reduce.In order to improve detection sensitivity, larger accessory 27 can be used for larger coil 61.Noncontacting proximity sensor
29th, 30 magnetic detection sensor can also be used.In Figure 5 for sprocket wheel 17,13 pitch diameter difference in the case of example.
In the case of the pitch diameter of drive sprocket 17 and the pitch diameter identical of driven sprocket 13, detect timing is spaced in drive chain
It is identical when wheel 17 and driven sprocket 13 normal between the two.
For Fig. 8 detection method to illustrate, detection method can also use other method.For example, to from original state
The waveform patterns of the row of the detection signal 66,67 of noncontacting proximity sensor 29,30 carry out the measure of certain time, and record measure
As a result.After the time passes through, again to the waveform patterns of the row of the detection signal 66,67 from noncontacting proximity sensor 29,30
It is measured, and obtains waveform patterns.It can also be compared by passing through front and rear waveform patterns to the time, it is thus actual to survey
Measure the time delay of the detection signal 66,67 from noncontacting proximity sensor 29,30.Can also be by the signal wave that actually measures
The storage of shape carries out the calculating of above-mentioned formula (3).
In the various figures, the ratio between pulse number of detection signal 66,67, the pulse shape of detection signal 66,67, signal electricity
The ratio between flat, height, rising edge interval are all to illustrate, and can carry out various changes.Be not limited to these figures pulse number it
Than etc..Fig. 5 etc. the longitudinal axis can also replace signal voltage and be represented by the size of signal code.
In addition, by the appropriately combined of multiple inscapes disclosed in above-mentioned embodiment, various inventions can be formed.
For example, it is also possible to delete several inscapes from whole inscapes disclosed in embodiment.Also, can also be appropriate group
Close the inscape across different embodiments.
Claims (10)
1. a kind of passenger conveyors chain elongation detection means, it is characterised in that possess：
Driving wheel, rotated by driving source；
Driven pulley, using the driving force of above-mentioned driving wheel, rotated by chain；
Detected body, it is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley；
Sensor, fixed according to each above-mentioned detected body relative to the main frame of passenger conveyors, to above-mentioned detected body
Based on the rotation of revolution by being detected；And
Calculating part, difference of the rotation from each sensor by timing is obtained, and the time for obtaining above-mentioned passenger conveyors passes through
Front and rear above-mentioned poor incrementss,
Above-mentioned calculating part calculates according to the rotating diameter of above-mentioned incrementss, the angular speed of above-mentioned driving wheel and above-mentioned driven pulley
The elongation of above-mentioned chain.
2. passenger conveyors as claimed in claim 1 chain elongation detection means, it is characterised in that
Above-mentioned detected body is metal object, and the metal object is with being fixed on the chain with the multiple teeth engaged with above-mentioned chain
One end of the side of wheel and from above-mentioned one end than above-mentioned tooth tooth top more towards above-mentioned sprocket wheel footpath projection outward.
3. passenger conveyors as claimed in claim 2 chain elongation detection means, it is characterised in that
The sensor is the close noncontacting proximity sensor detected of the above-mentioned detected body to being made up of metal.
4. passenger conveyors as claimed in claim 1 chain elongation detection means, it is characterised in that
Above-mentioned calculating part is, before the time during the operating of above-mentioned passenger conveyors passes through, by each detected body and often
Individual above-mentioned detected body adjusts relative to the positioning of sensor, passes through the above-mentioned rotation of the detection signal from each sensor and determines
When it is consistent, afterwards during above-mentioned operating time warp later obtains the variation that the above-mentioned rotation of above-mentioned detection signal passes through timing
Amount.
5. passenger conveyors as claimed in claim 1 chain elongation detection means, it is characterised in that
Above-mentioned calculating part is, before the time during the operating of above-mentioned passenger conveyors passes through, storage passes through from above-mentioned rotation
Timing offsets from each other the waveform of the sensor of a side of the state of the 1st time difference and the sensor of the opposing party, in above-mentioned operating
The time warp of period obtains sensing of the above-mentioned rotation of the sensor of above-mentioned the opposing party by timing relative to one side later
Difference of the above-mentioned rotation of device by timing, the 2nd i.e. bigger than above-mentioned 1st time difference time difference, and obtain above-mentioned 1st time difference and
The difference of above-mentioned 2nd time difference.
6. passenger conveyors as claimed in claim 1 chain elongation detection means, it is characterised in that be also equipped with：
Converter, the modulation electric current of pulse width modulation is carried out to electric current to the output of above-mentioned driving source；And
Controller, output with from above-mentioned driving source towards the change of any one of multiple Output speed of above-mentioned converter corresponding speed
More instruct,
Angular speed when controller noted above is with than the usual operating of above-mentioned driving wheel small angular speed drives above-mentioned driving source.
7. passenger conveyors as claimed in claim 1 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, it is characterised in that possess：
Driving wheel, rotated by driving source；
Driven pulley, using the driving force of above-mentioned driving wheel, rotated by chain；
Disk, is arranged to coaxial above-mentioned driving wheel and above-mentioned driven pulley, and difference diametrically has through hole；
Light-projecting portion, set according to each above-mentioned disk；
Light accepting part, set according to each above-mentioned disk, the light from above-mentioned light-projecting portion is carried out from above-mentioned through hole respectively by
Light；And
Calculating part, the difference by timing according to the rotation that each above-mentioned light accepting part detects is obtained, and obtain passenger conveyors
Time passes through front and rear above-mentioned poor incrementss,
Above-mentioned calculating part calculates according to the rotating diameter of above-mentioned incrementss, the angular speed of above-mentioned driving wheel and above-mentioned driven pulley
The elongation of above-mentioned chain.
9. the passenger conveyors chain elongation detection means as any one of claim 1 to 8, it is characterised in that
Detected body is also equipped with, the detected body is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley,
Above-mentioned calculating part is that 1 point of above-mentioned rotation of the revolution to each detected body carries out repeated detection by the difference of timing, right
Above-mentioned poor value is averaged as obtained from repeated detection, and the lower noise of deviation value removing is carried out to above-mentioned difference
Processing.
10. a kind of passenger conveyors, it is characterised in that possess：
Driving source, it is arranged at the main frame of passenger conveyors；
Driving wheel, rotated by above-mentioned driving source；
Chain, annularly circulated by the driving force of above-mentioned driving wheel；
Driven pulley, rotated by above-mentioned chain；
Detected body, it is respectively arranged at above-mentioned driving wheel and above-mentioned driven pulley；
Sensor, fixed according to each above-mentioned detected body relative to above-mentioned main frame, to above-mentioned detected body based on return
The rotation turned is by being detected；And
Calculating part, difference of the rotation from each sensor by timing is obtained, and the time for obtaining above-mentioned passenger conveyors passes through
Front and rear above-mentioned poor incrementss,
Above-mentioned calculating part calculates according to the rotating diameter of above-mentioned incrementss, the angular speed of above-mentioned driving wheel and above-mentioned driven pulley
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 CN106335837A (en) | 2017-01-18 |
| CN106335837B true CN106335837B (en) | 2018-01-09 |
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ID=57756152
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 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6058755B1 (en) |
| CN (1) | CN106335837B (en) |
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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 |
| JP6517391B1 (en) * | 2018-03-13 | 2019-05-22 | 東芝エレベータ株式会社 | Diagnostic device and diagnostic method |
| EP3670419B1 (en) | 2018-12-19 | 2023-01-25 | Otis Elevator Company | Method and device for monitoring chain tension |
| JP6870782B1 (en) * | 2019-10-31 | 2021-05-12 | 三菱電機ビルテクノサービス株式会社 | Passenger conveyor chain inspection jig and inspection method |
| JP6940227B2 (en) * | 2019-11-29 | 2021-09-22 | 東芝エレベータ株式会社 | Passenger conveyor chain loosening detector |
| 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 |
| 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 |
| 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 |
| JP7035133B2 (en) * | 2020-08-05 | 2022-03-14 | 東芝エレベータ株式会社 | Chain elongation detector |
| JP7024046B1 (en) | 2020-11-19 | 2022-02-22 | 東芝エレベータ株式会社 | Diagnostic system |
| 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 |
| JP7263498B1 (en) | 2021-12-22 | 2023-04-24 | 東芝エレベータ株式会社 | Chain elongation measuring device |
| CN117308795A (en) * | 2023-09-12 | 2023-12-29 | 苏迅电梯有限公司 | Detection device for length of escalator transmission chain |
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| JP6058755B1 (en) | 2017-01-11 |
| CN106335837A (en) | 2017-01-18 |
| JP2017019616A (en) | 2017-01-26 |
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