JP2016216243A - Moving handrail deterioration diagnostic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving handrail deterioration diagnostic device capable of finding a movement distance of a moving handrail without comprising any encoder.SOLUTION: According to the present invention, a moving handrail deterioration diagnostic device 12 that diagnoses damage to a steel cord embedded in a moving handrail 3 while the handrail 3 that an elevator 1 comprises is placed in operation comprises a rear wheel 13a rolling on an upper surface of the moving handrail 3; a magnetic tape 13c which is stuck on a peripheral surface of the rear wheel 13a and has an end part 13c1 forming a border part with a peripheral surface part; an excitation coil M1 and a receiving coil M2 which detect featured magnetic flux exiting from the end 13c1 of the magnetic tape 13c; and an arithmetic part which calculates a movement distance of the moving handrail 3 in operation based upon the number of peaks of the magnetic flux detected through those excitation coil M1 and receiving coil M2 and a length of the peripheral surface of the rear wheel 13a.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a moving handrail deterioration diagnosis device for diagnosing damage to a moving handrail provided on a passenger conveyor such as an escalator or a moving sidewalk.

  This type of prior art is disclosed in Patent Document 1. The prior art disclosed in Patent Document 1 is configured to measure the moving distance of a moving handrail of a passenger conveyor by an encoder and panoramicly synthesize an X-ray projection image obtained by photographing the state inside the moving handrail.

JP 2012-220239 A

  The prior art disclosed in Patent Document 1 described above has an encoder that measures the moving distance of the moving handrail, and thus has a problem that the apparatus becomes large.

  The encoder is connected to a roller that rotates following the behavior of the moving handrail and outputs the moving distance of the moving handrail from the number of rotations of the roller, so the roller does not follow the moving handrail firmly. And the moving distance of the moving handrail cannot be measured accurately. In other words, if the device is not installed at the correct measurement position on the moving handrail when measuring the moving distance of the moving handrail, a gap will be created between the moving handrail and the roller of the device, and rotation of the roller will not be possible. It may be sufficient that the moving distance of the moving handrail cannot be measured correctly. In the prior art disclosed in Patent Document 1, there is a problem that it is impossible to grasp such a contact abnormality with respect to the moving handrail.

  The present invention has been made based on the above-described situation in the prior art, and an object of the present invention is to provide a moving handrail deterioration diagnosis apparatus that can determine the moving distance of a moving handrail without providing an encoder.

  In order to achieve the above object, the moving handrail deterioration diagnosis device according to the present invention is a movement for diagnosing damage to a steel cord embedded in the moving handrail in a state in which the moving handrail provided on a passenger conveyor is operated. In the handrail deterioration diagnosis device, a rotating body that rolls on an upper surface of the moving handrail, and a magnetic tape that is attached to a peripheral surface of the rotating body and has an end portion that forms a boundary portion with the peripheral surface portion; , Based on the coil that detects the characteristic magnetic flux coming out of the end of the magnetic tape, the number of magnetic flux peaks detected through the coil, and the length of the peripheral surface of the rotating body And a calculating unit for calculating a moving distance of the moving handrail.

  According to the moving handrail deterioration diagnosis apparatus according to the present invention, the moving distance of the moving handrail can be obtained without providing an encoder, and thereby the apparatus can be reduced in size as compared with the conventional apparatus. Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

It is a perspective view which shows the principal part structure of the escalator mentioned as an example of the passenger conveyor provided with the moving handrail which is the diagnostic object of the moving handrail degradation diagnostic apparatus which concerns on one Embodiment of this invention. It is a side view which shows schematic structure of the escalator shown in FIG. It is a side view which shows the state which installed the moving handrail deterioration diagnostic apparatus which concerns on this embodiment in the escalator shown in FIG. It is a top view which shows the structure of this embodiment. It is a side view which shows the structure of this embodiment. It is a top view which shows the coil board | substrate with which this embodiment is equipped. It is a perspective view which shows the rear wheel contained in the rear-wheel rotation part with which this embodiment is equipped, and the magnetic tape affixed on this rear wheel.

  Embodiments of a moving handrail deterioration diagnosis apparatus according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing a main configuration of an escalator cited as an example of a passenger conveyor provided with a moving handrail that is a diagnosis target of the moving handrail deterioration diagnosis apparatus according to an embodiment of the present invention.

  There are escalators, moving sidewalks, and the like as passenger conveyors equipped with a moving handrail to be diagnosed. In this embodiment, an escalator will be described as an example.

  As shown in FIG. 1, the escalator 1 includes a step 2 on which a passenger rides and a moving handrail 3 that moves in the same direction as the traveling direction of the step 2. The moving handrail 3 is provided on both the left and right sides of Step 2 with respect to the traveling direction of Step 2.

  The moving handrail 3 is configured in an endless manner and circulates along the balustrade 4 provided in parallel with the moving direction of Step 2.

  That is, the moving handrail 3 moves in the same direction as that of the step 2 at the upper side of the balustrade 4, and moves downward while forming an arc shape when reaching the end of the balustrade 4 so that it is upside down. It is drawn into the inside of the deck 5 provided with a skirt guard.

  Then, it passes through the deck 5 to the opposite end of the balustrade 4, and moves upside down from the deck 5 while forming an arc shape in an upside-down state until then. Going back to the circulation. Inside the deck 5, a driving device (not shown) for driving the movable handrail 3 is disposed.

  FIG. 2 is a side view showing a schematic configuration of the escalator shown in FIG.

  The escalator 1 includes a frame 6 that is embedded under the upper floor and the lower floor, and is spanned therebetween.

  Further, a chain (not shown) is wound around a sprocket 7 which is driven to rotate by a driving device (not shown) provided below the upper floor and a driven sprocket 8 provided below the floor on the lower floor, and the chain is shown in FIG. A plurality of steps 2 are provided in an endless manner.

  As shown in FIG. 2, the moving handrail 3 is driven by the terminal gear 9. The terminal gear 9 is connected and rotated by a sprocket 7 and a chain 10 that are rotated by a driving device (not shown).

  As a result, the handrail 3 and the step 2 are driven in the same direction at the same speed by receiving the driving force from the sprocket 7. The moving handrail 3 is tensioned by the tension device T and the support guide 11.

  As shown in FIG. 2, the moving handrail 3 has horizontal portions A on the upper floor and the lower floor, and the space between these horizontal portions A is formed in an inclined shape.

  For the escalator 1 having such a configuration, the moving handrail deterioration diagnosis apparatus according to the present embodiment is, for example, the horizontal portion A on the forward path side of the moving handrail 3 that has moved in the deck 5 and the frame 6. Thus, measurement for deterioration diagnosis of the moving handrail 3 is performed.

  FIG. 3 is a side view showing a state in which the moving handrail deterioration diagnosis device according to the present embodiment is installed on the escalator shown in FIG. 1.

  As shown in FIG. 3, the moving handrail deterioration diagnosis device 12 according to the present embodiment includes a main body 12A, a rear wheel rotating portion 13 disposed at a rear position of the main body 12A, and a front position of the main body 12A. The front wheel rotating part 14 is provided. Moreover, it arrange | positions so that the moving handrail 3 may be pinched | interposed, and the guides 15a and 15b which contact the both sides | surfaces of the moving handrail 3 are provided. The movable handrail deterioration diagnosis device 12 according to the present embodiment follows the operation of the movable handrail 12 through the rear wheel rotation unit 13, the front wheel rotation unit 14, and the guides 15a and 15b.

  4 is a plan view showing the configuration of this embodiment, FIG. 5 is a side view showing the configuration of this embodiment, FIG. 6 is a plan view showing a coil substrate provided in this embodiment, and FIG. 7 is provided in this embodiment. It is a perspective view which shows the rear wheel contained in the rear-wheel rotation part and the magnetic tape affixed on this rear wheel.

  As shown in FIG. 4, the above-described rear wheel rotating unit 13 includes a rotating body that rolls on the upper surface of the movable handrail 3, that is, a rear wheel 13a, a shaft 13b that supports the rear wheel 13a, and a rear wheel 13a. A magnetic tape 13c attached to the peripheral surface and a support plate 13d connected to the shaft 13b and attached to the main body 12A so as to be movable in the vertical direction are provided.

  The above-described front wheel rotating portion 14 includes a pair of front wheels 14a and a pair of shafts 14b that respectively support the front wheels 14a, and is attached to the main body 12A by being divided left and right from the center on the front side of the main body 12A. Further, only one of the pair of guides 15a and 15b is provided with a combination of the pressing plate 16 and the leaf spring 17, and the guides 15a and 15b are provided via the holding plate 16 and the leaf spring 17, respectively. 15 b is pressed against the side surface of the moving handrail 3.

  As shown in FIG. 5, a coil substrate 24 is attached to the lower part of the main body 12A. As shown in FIG. 4, a start switch 18, a stop switch 19, and a reset switch 20 are arranged on the upper surface of the main body 12 </ b> A. When the start switch 18 is pressed, the state LED 21 is lit, and when the stop switch 19 is pressed, the state is displayed. The LED 21 is turned off.

  When the start switch 18 is pressed and measurement of the moving distance of the moving handrail 3 is started, the memory LEDs 22 are sequentially turned on according to the recording amount to display the recording amount.

  As shown in FIG. 4, in the present embodiment, a handle 23 that is held when an operator performs the deterioration diagnosis work of the movable handrail 3 is arranged at the center of the upper surface of the main body 12A.

  As shown in FIG. 5, two long holes 13e are formed in the support plate 13d. A support plate 13d for holding the rear wheel 13a is movable in the vertical direction via screws 13f inserted into the long holes 13e.

  As shown in FIG. 5, the guide 15a includes a roller 15c and a shaft 15d inserted through the center of the roller 15c, and the shaft 15d is fastened to the main body 12A. The guide 15b has the same configuration.

  Further, as shown in FIG. 5, the coil substrate 24 is fastened to the main body 12 </ b> A with a resin screw 25. Therefore, the position of the main body 12A, the front wheel 14a, the guides 15a and 15b, and the coil substrate 24 is fixed and does not vary, but the rear wheel 13a varies depending on the position of the moving handrail 3.

  For example, when the moving handrail 3 is at a position close to the main body 12A as shown at a position 3a in FIG. 5, the rear wheel 13a is also at a position close to the main body 12A, but the moving handrail 3 is at a position 3b in FIG. As shown in FIG. 4, when the vehicle is located far from the main body 12A, the rear wheel 13a follows the moving handrail 3 and moves away from the main body 12A.

  Here, since the coil substrate 24 is fixed to the main body 12A, when the movable handrail 3 is at the position 3a, the rear wheel 13a and the coil substrate 24 are in a close positional relationship, and when the movable handrail 3 is at the position 3b. The rear wheel 13a and the coil substrate 24 are in a distant positional relationship. Since the magnetic tape 13c is attached to the peripheral surface of the rear wheel 13a, the magnetic tape 13c also moves up and down following the position of the rear wheel 13a.

  In the present embodiment, for example, a magnetic sensor is provided as a flaw detection device for detecting damage to a steel cord embedded in the moving handrail 3, and coils S <b> 1 to S <b> 9 are arranged on a coil substrate 24. The state of the steel cord is output by these coils S1 to S9.

  In addition, the coil substrate 24 is provided with an exciting coil M1 and a receiving coil M2 for detecting a characteristic magnetic flux emitted from the end 13c1 of the magnetic tape 13c shown in FIG. These exciting coil M1 and receiving coil M2 are arranged so as to be close to the rear wheel 13a.

  As shown in FIG. 7, the magnetic tape 13c affixed to the rear wheel 13a is provided only at one place on the entire peripheral surface of the rear wheel 13a so as to extend in the direction of the shaft 13b of the rear wheel 13a, for example. is there. Therefore, the magnetic tape 13c has the above-described end portion 13c1 that forms a boundary portion with the peripheral surface of the rear wheel 13a, and every time the rear wheel 13a moves on the moving handrail 3 one turn, It approaches the exciting coil M1 and the receiving coil M2 only once.

  Further, in the present embodiment, the moving handrail is operated on the main body 12A based on the number of magnetic flux peaks detected through the exciting coil M1 and the receiving coil M2 and the length of the peripheral surface of the rear wheel 13a. 3 is provided.

  In the present embodiment configured as described above, the rear wheel 13a and the front wheel 14a are positioned on the upper surface of the moving handrail 3 while holding the handle 23 of the main body 12A, and the guides 15a and 15b. The rollers 13c and the like are placed in contact with both sides of the movable handrail 3, and the start switch 18 is operated while holding the handle 23 to start the deterioration diagnosis work.

  Thereby, the presence or absence of damage to the steel cord embedded in the moving handrail 3 is detected by the flaw detection device provided in the main body 12A. During this time, the rear wheel 13a rotates following the movement of the moving handrail 3, and the output of the magnetic tape 13c that appears during one rotation is sensed by the exciting coil M1 and the receiving coil M2. When there is an output, the rear wheel 13a has made one rotation.

  The arithmetic unit provided in the main body 12A includes the number of magnetic flux peaks detected via the exciting coil M1 and the receiving coil M2, that is, the rotational speed of the rear wheel 13a and the length of the peripheral surface of the rear wheel 13a that is known in advance. Based on the above, the moving distance of the moving handrail 3 is calculated. By calculating the movement distance of the moving handrail 3, the part of the moving handrail 3 where the steel cord detected by the flaw detection apparatus is damaged can be grasped.

  When the deterioration diagnosis work is completed, the stop switch 19 is pressed. If necessary, the reset switch 20 is pushed for the next deterioration diagnosis.

  During the above-described deterioration diagnosis work, when the output through the exciting coil M1 and the receiving coil M2 becomes small, the distance between the magnetic group 13c and the coil substrate 24 is large, that is, the rear wheel 13a. It is a situation where a contact abnormality with the moving handrail 3 is occurring, and it is assumed that the moving handrail deterioration diagnosis device 12 according to the present embodiment is not properly installed on the moving handrail 3. Can do.

  According to the moving handrail deterioration diagnosis device 12 according to the present embodiment configured as described above, the moving distance of the moving handrail 3 can be obtained without providing an encoder. Thereby, this embodiment can implement | achieve size reduction of the moving handrail deterioration diagnostic apparatus 12. FIG.

  Further, it can be understood that the moving handrail deterioration diagnosis device 12 is not correctly installed with respect to the moving handrail 3. Thereby, the moving handrail deterioration diagnosis device 12 according to the present embodiment can realize the deterioration diagnosis of the moving handrail 3 with excellent measurement accuracy of the moving distance of the moving handrail 3.

  In addition, although this embodiment is provided with the magnetic sensor as a flaw detection apparatus which detects the damage of the steel cord embed | buried under the movable handrail 3, you may make it replace with this magnetic sensor and may be equipped with an X-ray apparatus, Further, an X-ray apparatus may be provided in combination with the magnetic sensor.

  In addition to the configuration of the present embodiment, for example, an alarm unit that notifies the main body 12A that the moving distance of the moving handrail 3 calculated by the calculation unit provided in the main body 12A has reached a predetermined distance, for example, a buzzer You may make it the structure provided with.

  Further, in addition to the configuration of the present embodiment, for example, an alarm unit, for example, a buzzer for notifying the main body 12A that the moving handrail deterioration diagnosis device 12 is separated from the upper surface of the moving handrail 3 and cannot be normally measured. You may make it the structure provided.

  Moreover, although the escalator 1 was mentioned in this embodiment as an example of a passenger conveyor, this invention is not restricted to the deterioration diagnosis of the steel cord embed | buried in the handrail 3 of the escalator 1 in this way, It is well-known including a mobile sidewalk. The present invention can be applied to deterioration diagnosis of steel cords embedded in moving handrails 3 of other passenger conveyors in general.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. All technical matters included in the technical idea described in the claims are defined by the present invention. It becomes the object of. The above-described embodiments show preferred examples, but those skilled in the art can realize various alternatives, modifications, variations, and improvements from the contents disclosed in this specification. These are included in the technical scope described in the appended claims.

1 Escalator (passenger conveyor)
3 moving handrail 12 moving handrail deterioration diagnosis device (this embodiment)
12A body 13 rear wheel rotating part 13a rear wheel (rotating body)
13b shaft 13c magnetic tape 13c1 end 13d support plate 13e oblong hole 13f screw 14 front wheel rotating portion 14a front wheel 14b shaft 15a guide 15b guide 15c roller 15d shaft 16 presser plate 17 leaf spring 18 start switch 19 stop switch 20 reset switch 21 reset switch 21
22 Memory LED
23 Handle 24 Coil board 25 Resin screw M1 Excitation coil M2 Receiver coil

Claims (7)

In the state of operating the moving handrail provided in the passenger conveyor, in the moving handrail deterioration diagnosing device for diagnosing damage to the steel cord embedded in the moving handrail,
A rotating body that rolls on the upper surface of the moving handrail;
A magnetic tape that is attached to the peripheral surface of the rotating body and has an end portion that forms a boundary with the peripheral surface portion;
A coil for detecting a characteristic magnetic flux emanating from the end of the magnetic tape;
An arithmetic unit that calculates a moving distance of the moving handrail that is operating based on the number of magnetic flux peaks detected through the coil and the length of the peripheral surface of the rotating body; A moving handrail deterioration diagnosis device characterized by the above. In the handrail deterioration diagnostic apparatus according to claim 1,
A main body provided with the arithmetic unit;
A coil substrate disposed at a lower portion of the main body and provided with the coil;
A front wheel rotating portion including a front wheel that is disposed at a front position of the main body and rolls on the moving handrail, and a rear wheel including a rear wheel that is disposed at a rear position of the main body and rolls on the moving handrail. A rotating part;
A guide including a roller capable of rolling in contact with a side portion of the moving handrail,
The moving handrail deterioration diagnosing device, wherein the rotating body is composed of the rear wheel of the rear wheel rotating unit. In the handrail deterioration diagnostic apparatus according to claim 2,
The upper surface of the main body has a handle capable of holding the main body,
The rear-wheel rotating part includes a support plate attached to the main body and holding the rear wheel so as to be movable in the vertical direction. In the handrail deterioration diagnostic apparatus according to claim 1,
An apparatus for diagnosing moving handrail deterioration, comprising an alarm unit for notifying that the moving distance of the moving handrail calculated by the computing unit has reached a predetermined distance. In the handrail deterioration diagnostic apparatus according to claim 4,
The said alarm part consists of busers, The moving handrail deterioration diagnostic apparatus characterized by the above-mentioned. In the handrail deterioration diagnostic apparatus according to claim 1,
A moving handrail deterioration diagnosis apparatus comprising: an alarm unit for notifying that the moving handrail deterioration diagnosis apparatus cannot be normally measured away from the upper surface of the moving handrail. In the moving handrail deterioration diagnostic apparatus according to claim 6,
The alarm device comprises a buzzer, and the handrail deterioration diagnosis device.