JP2018177473A - Elevator apparatus and control method for elevator apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator apparatus that is able to perform a temporary restoration operation under a condition that there is no possibility of a confinement accident caused by catching of a long object, and to provide a control method for an elevator apparatus.SOLUTION: An elevator apparatus comprises: a vibration sensing unit that senses vibration of a hoist way; a hoist way inspecting device that inspects the inside of the hoist way in a case where the vibration sensing unit sends an elevator controller an emergency operation command in which an emergency operation is performed for a car and then a stop operation is performed; and an abnormality diagnosing unit that changes a reference value for a vibration width set in the vibration sensing unit and sends the elevator controller a temporary restoration operation command in a case where it is diagnosed, from data sent from the hoist way inspection device, that although a serious abnormal state affecting travel of the car has not arisen, an abnormal state in which a risk that a long object may be caught will increase.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an elevator apparatus and a control method of the elevator apparatus.

  In a conventional elevator apparatus, when a seismic sensor detects a shake of a predetermined level or more, safety measures such as stopping the car at the nearest floor and stopping the elevator are taken by controlled operation.

  Patent Document 1 discloses a control device for controlling and operating an elevator, which stops the elevator at the nearest floor after an occurrence of an earthquake to temporarily stop operation and then automatically recovers after confirming safety by automatic inspection operation. Is disclosed. In Patent Document 1, when an earthquake occurs, the car is stopped at the nearest floor or the like according to the seismic intensity or shaking condition of the earthquake to stop operation, and then the elevator is run by automatic inspection operation. Then, the command speed issued from the speed control device and the actual speed of the elevator in the automatic inspection operation are compared, and the presence or absence of abnormality is determined depending on whether the difference is equal to or less than a predetermined value. That is, in patent document 1, the traveling speed of the elevator at the time of an automatic inspection operation is detected, and the presence or absence of abnormality is judged.

JP, 2008-13279, A

  By the way, when the elevator system is stopped due to a huge earthquake, if there is no problem in traveling of the elevator system but if the equipment in the hoistway is deformed or broken, then it is normal because of the earthquake etc. If a building shakes to such an extent that there is no problem, there is a risk that a long object such as a rope or a wire may be caught at the deformed or broken portion.

  Therefore, an object of the present invention is to provide an elevator apparatus capable of performing a temporary recovery operation under a condition that a confinement accident due to a long object does not occur when the elevator apparatus stops operation after control operation, and an elevator apparatus It is in providing a control method.

  In order to solve the above problems and to achieve the object of the present invention, an elevator apparatus according to the present invention comprises: a hoistway; an elevator control device for controlling a car ascending and lowering; A sensing unit, a hoistway inspection device, and an abnormality diagnosis unit. The vibration sensing unit detects the vibration of the hoistway, calculates the swing width of the long object disposed in the hoistway, and sets the reference value of the swing width set in advance and the calculated long object. The fluctuation range is compared, and a control operation command or a normal operation command is given to the elevator control device based on the comparison result. The hoistway inspection apparatus inspects the inside of the hoistway when the vibration sensing unit gives the elevator control apparatus a control operation command to control the car and then stop the car. Based on the data sent from the hoistway inspection device, the abnormality diagnosis unit diagnoses that there is no abnormality that a serious thing affecting the running of the car has occurred, but the risk that a long object is caught increases. In this case, the reference value of the swing width set in the vibration sensing unit is changed, and a temporary recovery operation command is given to the elevator control device.

  The elevator control method according to the present invention includes: a hoistway; an elevator control device for controlling the elevation of a car according to whether the vehicle travels up and down in the hoistway; a vibration sensing unit for sensing a vibration of the hoistway; A control method of an elevator apparatus comprising: a hoistway inspection apparatus for inspecting the inside of a hoistway; and an abnormality diagnosis unit for diagnosing an abnormality from data obtained by the hoistway inspection apparatus; The vibration is detected, the swing width of the long object placed in the hoistway is calculated, and the preset reference value of the swing width is compared with the calculated swing width of the long object. When the control operation command for giving a control operation command or a normal operation command to the elevator control device based on the comparison result and causing the vibration sensing unit to control the car and then stop the operation is given to the elevator control device, Road inspection The station examines the interior of the hoistway, and the anomaly diagnosis unit diagnoses the anomaly occurring in the hoistway from the data sent from the hoistway inspection device, and the anomaly diagnosis unit affects the traveling of the car. Although it has been determined that no serious abnormality has occurred, but an abnormality has occurred that increases the risk of catching a long object, the reference value of the swing width set in the vibration sensing unit is changed, Give a temporary recovery operation command to the elevator control device.

  According to the present invention, the temporary recovery operation can be performed under the condition that the confinement accident due to the long object being caught does not occur.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram for demonstrating the whole structure of the elevator apparatus which concerns on one Embodiment of this invention. It is a block diagram showing composition of a control system of an elevator apparatus concerning one embodiment of the present invention. It is the figure which showed typically the case where the main rope shakes at the time of a vibration of a hoistway. It is a flowchart which shows the control method of the elevator apparatus which concerns on one Embodiment of this invention.

Hereinafter, an elevator apparatus and an example of a control method of the elevator apparatus according to an embodiment (hereinafter, the present embodiment) of the present invention will be described with reference to the drawings. The present invention is not limited to the following examples. In each of the drawings, the same members are denoted by the same reference numerals. Further, the present embodiment will be described in the following order.
1. Overall configuration of elevator apparatus Configuration of control system of elevator apparatus 3. Control method of elevator apparatus

1. Overall Configuration of Elevator Device FIG. 1 is a schematic configuration diagram for describing the overall configuration of the elevator device 1 of the present embodiment. An elevator apparatus 1 shown in FIG. 1 includes a hoistway 18 and a machine room 5 provided above the hoistway 18. The elevator apparatus 1 further includes a car 2 and a counterweight 3 accommodated in the hoistway 18, and the hoisting machine 6, the speed governor 10, the vibration sensing unit 8, and the control accommodated in the machine room 5. A unit 50 is provided. Furthermore, in the hoistway 18 of the elevator apparatus 1, a main rope 4 and a balancing rope 12 for raising and lowering the car 2, a governor rope 9 wound around the governor 10, and the car 2 A long object such as a traveling cable 17 for supplying power is disposed.

[Shockway]
The hoistway 18 is a space serving as a passage for the car 2 to move up and down, and is provided vertically through the floors in the building. A guide rail (not shown) for guiding the raising and lowering of the car 2 and the counterweight 3 is attached to the inner wall surface of the hoistway 18. Further, at height positions corresponding to the respective floors in the wall surface of the hoistway 18, landing doors (not shown) leading to the respective floors are provided.

[machine room]
The machine room 5 is a space provided in the upper part of the hoistway 18 and mainly controls the hoisting machine 6 for moving the car 2 up and down, the governor 10, the vibration sensing unit 8 and the control unit 50 Is housed.

[Kago]
The car 2 is for carrying a person and a load, and is supported by the car frame 14 in the hoistway 18 and is housed in a suspended state at one end of the main rope 4. The car 2 ascends and descends in the vertical direction in the hoistway 18 while being guided by a guide rail provided on the inner wall surface of the hoistway 18. A car door (not shown) is provided on the side of the car 2 at a position corresponding to the landing door, and the car door and the landing door open when the car is stopped at each floor. People and luggage get on and off.

[Balance weight]
The counterweight 3 is provided for balancing with the car 2, and is accommodated in the hoistway 18 in a suspended state at the other end of the main rope 4 on the opposite side to the car 2. There is.

[Winding machine]
The hoisting machine 6 is accommodated in a machine room 5 and a main rope 4 is wound around it. Under control of the control unit 50, the hoisting machine 6 lifts and lowers the car 2 and the counterweight 3 via the main cable 4 in a lifting manner.

[Speed governor, speed governor rope]
The governor 10 is accommodated in the machine room 5 and a governor rope 9 is wound around it. On the other hand, one end of the governor rope 9 is fixed to the top of the car 2 and the other end is fixed to the bottom of the car 2. Further, the governor rope 9 is wound around the governor 10 housed in the machine room 5 and is wound around the governor pulley 11 disposed at the bottom of the hoistway 18. Thereby, the speed governor rope 9 circulates and moves between the speed governor 10 and the speed governor pulley 11 in conjunction with the operation of moving up and down the car 2.

  Therefore, the circulation speed of the governor rope 9 and the elevating speed of the car 2 are interlocked with each other. The speed governor 10 detects the elevating speed of the car 2 from the circulating speed of the speed governor rope 9. In addition, the speed governor 10 operates under the control of the control unit 50 when the circulation speed of the speed governor rope 9, that is, the lifting speed of the car 2 reaches a predetermined speed or more. Grasping and stopping the circulation movement of the governor rope 9.

[Control unit]
The control unit 50 controls the entire system constituting the elevator apparatus 1 and is connected to an elevator control device 40, a hoistway inspection device 20, and an abnormality diagnosis unit 30, which will be described later, in addition to the vibration sensing unit 8. Control each part. The control unit 50 also has a storage unit (not shown) for storing a program to be executed and data obtained by each unit.

[Vibration sensing unit]
The vibration sensing unit 8 is accommodated in the machine room 5 and detects a shake of the machine room 5 and calculates a swing width (a swing amount) of the long object. The vibration sensing unit 8 controls the elevator apparatus 1 under the control of the control unit 50 so that the elevator apparatus 1 is controlled when the swing width is equal to or greater than a predetermined value (hereinafter referred to as a sensed level). Send a signal to 40 (see FIG. 2). On the other hand, when it is determined that the swing width is less than the detection level, the vibration sensing unit 8 sends a signal to the elevator control device 40 so that the elevator device 1 operates normally. The configuration of the vibration sensing unit 8 will be described in detail later.

[Main cord]
The main ropes 4 are for suspending the car 2 and one end thereof is fixed to the upper part of the car 2 and the other end is fixed to the counterweight 3. The main rope 4 supports the car 2 so as to be able to move up and down in the hoistway 18 by the intermediate portion being wound around a hoisting machine 6 and a main rope pulley 7 provided in the machine room 5.

[Balance rope]
The balancing rope 12 compensates for the difference in weight of the main rope 4 between the car 2 and the counterweight 3 via the hoisting machine 6, one end of which is fixed to the bottom of the car 2, and the other end Is fixed to the counterweight 3. The balance rope 12 operates in conjunction with the operation of raising and lowering the car 2 by having the intermediate portion wound around the compensating pulley 13 disposed below the hoistway 18.

[Traveling cable]
The traveling cable 17 is for feeding power to the car 2, and one end thereof is connected to the car 2 and the other end is supported by and fixed to a fixing portion 19 provided on the inner wall of the hoistway 18. The fixing portion 19 is provided, for example, at a height about half the height of the hoistway 18.

[First imaging device, second imaging device]
The first imaging device 15 and the second imaging device 16 are each configured by a camera capable of capturing a still image and / or a moving image, and capture an image in the hoistway 18. Each of the first imaging device 15 and the second imaging device 16 is disposed so as to be able to image different ranges in the hoistway 18. For example, the first imaging device 15 is disposed on the upper side in the elevating direction of the car 2, and the second imaging device 16 is disposed on the lower side in the elevating direction of the car 2. The first imaging device 15 and the second imaging device 16 are supported by, for example, a member that can rotate 360 degrees, and are configured to be able to capture the entire inside of the hoistway 18.

  The first imaging device 15 and the second imaging device 16 constitute a hoistway inspection device 20 described later, and in the hoistway inspection device 20, the images acquired by the first imaging device 15 and the second imaging device 16 are included. Image analysis is performed. In the present embodiment, it is determined whether or not there is an abnormality in the hoistway 18 using data acquired by the first imaging device 15 and the second imaging device 16, and each measure is taken according to the presence or absence of the abnormality. It is taken. The description of the control system including the hoistway inspection device 20 will be described in detail later.

2. Control System of Elevator Device Next, a configuration of a control system of the elevator device 1 of the present embodiment will be described. FIG. 2 is a block diagram showing a configuration of a control system of the elevator apparatus 1 of the present embodiment. As shown in FIG. 2, the elevator apparatus 1 according to this embodiment includes the control unit 50 described above, an elevator control device 40, a vibration sensing unit 8, a hoistway inspection device 20, and an abnormality diagnosis unit 30.

[Elevator controller]
The elevator control device 40 controls the driving of the elevator apparatus 1 such as driving of the hoisting machine 6 for raising and lowering the car 2 and opening and closing of the car door in the car 2 under the control of the control unit 50. In addition to the normal operation of the elevator apparatus 1 during normal operation, the elevator control device 40 detects a vibration of a predetermined level or more in the vibration sensing unit 8 due to an earthquake or the like, the vibration sensing unit 8 and the abnormality diagnosis unit 30 described later. The drive of the hoisting machine 6 is controlled based on the command from.

[Vibration sensing unit]
The vibration sensing unit 8 is configured of an accelerometer 81, a swing width computing unit 82, a comparison determination unit 83, a control operation command unit 84, and a normal operation command unit 85. The accelerometer 81 detects a shake of the machine room 5 and has an acceleration detection function in the horizontal direction (x, y directions) orthogonal to each other. The signal obtained by the accelerometer 81 is transmitted to the shake width computing unit 82. The swing width computing unit 82 calculates the swing width (the swing amount) of the long object based on the data of the elevator apparatus 1 from the signal sent from the accelerometer 81.

  By the way, when a huge earthquake occurs, long-period ground motion with a relatively long period occurs in a distant place. When the period of the long period ground motion movement is close to the natural period of the building itself, the building resonates and a large movement occurs. Then, when a large shaking occurs in the building, a long object such as the main rope 4 in the hoistway 18, the balancing rope 12, the traveling cable 17 and the like shakes greatly. For example, in the case of focusing on the swing amount of the main cord 4, the main cord 4 largely shakes when the car 2 is at a position where the main cord 4 resonates with the sway of the building. The swing width is the largest at the approximate center position or at the approximate center positions of the machine room 5 and the counterweight 3. Therefore, in the present embodiment, under the condition that the long object resonates with the vibration of the building, the shake width computing unit 82 calculates the width in which the long object shakes the most as the shake width of the long object. I assume.

  The comparison determination unit 83 compares the swing width of the long object calculated by the swing width calculation unit 82 with the preset sensing level, detects the difference between them, and the calculated swing width is the sensed level. It is determined whether it is above or below the sensing level. Here, the “sense level” is a reference value of the swing width set to detect whether the swing width of the long object is the swing width required for control operation, and the long object It is a reference value for detecting whether or not the swing width does not cause collision or catching on the internal equipment of the hoistway 18.

FIG. 3: is the figure which showed typically the case where the main rope 4 shakes at the time of a vibration of a building. Imaginary line shown by a dashed line a1 in FIG. 3 is a main ropes 4 showed major locus of ropes 4 when the oscillating at the sensing level W ₀ which is set in advance by the comparing and judging section 83.

When attention is paid to the vibration of the main ropes 4, when the car is disposed at a position where the main ropes 4 resonates with the sway of the building, the maximum allowable swing width W at the approximate center position O of the machine room 5 and the car 2 ₀ is set as the “sense level” in the comparison and determination unit 83. Here, the maximum allowable swing is the maximum swing allowed within a range in which the main rope 4 does not contact the internal equipment of the hoistway 18, and in the present embodiment, the maximum allowable swing. It is assumed that the width W ₀ is preset as the sensing level W ₀ .

If the comparison / determination unit 83 determines that the swing width of the main rope 4 is less than the detection level W ₀ , the comparison determination unit 83 determines that the main rope 4 is “no swing”. On the other hand, the comparing and judging section 83, when the amplitude of the main ropes 4 is determined to be sensed level W ₀ or more, the comparison determination unit 83, the main rope 4 is determined as "shake exists".

  Here, although the description has been given focusing on the main ropes 4, “wiggled” or “wobbled” is similarly determined for each of the long objects such as the balance rope 12 and the governor rope 9.

  When the comparison determination unit 83 determines that “the swing is not present” by comparing the swing width of the long object calculated by the swing width calculation unit 82 with the sensing level, the signal is sent to the normal operation command unit 85. Do. The normal operation command unit 85 gives a command of normal operation to the elevator control device 40 based on the signal from the comparison / determination unit 83.

  On the other hand, when the comparison / determination unit 83 determines that “the shake is present” by comparing the swing width of the long object calculated by the swing width calculation unit 82 with the sensing level, the control operation command unit 84 Send to The control operation command unit 84 gives the elevator control device 40 a control operation command in response to the signal received from the comparison determination unit 83. Here, when it is determined that "shake is present", the control operation method differs depending on whether the shake is "shake high" or "shake low". The "high swing" and "low swing" are sense levels indicated in the elevator seismic design and construction guidelines.

  "Swing height" is set to a swinging state in which a long object may come into contact with the internal equipment of the hoistway 18, and when it is determined that "swing height", the control operation command unit 84 After stopping the car 2 to the nearest floor, the elevator control device 40 is instructed to stop operation. Thereafter, in the present embodiment, an abnormality in the hoistway 18 is inspected by the hoistway inspection device 20 described later, and the abnormality diagnosis unit 30 diagnoses the generated abnormality and elevator control of a command according to the diagnosis result The device 40 is provided. The hoistway inspection apparatus 20 and the abnormality diagnosis unit 30 will be described in detail later.

  On the other hand, in the case of "low swing", the swing of the long object is set to a swing state of about 50 to 70% of "high swing", and when it is determined that "run low", the control operation command unit 84 Gives a command to shift to normal operation after a predetermined time has elapsed after stopping the car 2 to the nearest floor.

  By the way, long period ground motion has small acceleration, and a general acceleration type seismic sensor can not detect long period ground motion. On the other hand, in the present embodiment, the swing width computing unit 82 can calculate the swing width of the long object from the swing of the long period ground motion and the data of the elevator apparatus 1. As a result, it is possible to carry out an appropriate control operation before the long object shakes and contacts or gets caught in the internal equipment of the hoistway 18 due to the long period ground motion.

  Further, the present embodiment is characterized in that the “sense level” set by the comparison determination unit 83 is changed by a sense level change unit 34 described later under predetermined conditions.

[High-axis inspection system]
In the case where the vibration sensing unit 8 gives the elevator control device 40 the controlled operation of the car 2 and then gives the control operation command for setting the operation stop state, the hoistway inspection device 20 deforms or breaks the internal equipment of the hoistway 18 It is a device to check if there is an abnormality such as. The hoistway inspection apparatus 20 includes a first imaging device 15, a second imaging device 16, a condition setting unit 21, an image data acquisition unit 22, and an image analysis unit 23.

  The condition setting unit 21 sets imaging conditions in the first imaging device 15 and the second imaging device 16 under the control of the control unit 50 and inputs the imaging conditions to the first imaging device 15 and the second imaging device 16, and at the time of imaging The elevator speed of the car 2 is set and input to the elevator control device 40. The condition setting unit 21 sets, for example, imaging conditions necessary for inspection in the hoistway 18 such as imaging time, imaging timing, imaging direction, imaging range, switching of moving image or still image, flash and the like.

  The first imaging device 15 and the second imaging device 16 photograph the inside of the hoistway 18 under the conditions set by the condition setting unit 21 under the control of the control unit 50. When the inside of the hoistway 18 is photographed in the first imaging device 15 and the second imaging device 16, the elevator control device 40 causes the car 2 to ascend and descend in the hoistway 18 at the speed set by the condition setting unit 21. Do. At the time of photographing in the hoistway 18, for example, the elevating speed of the car 2 is controlled so as to be lower than the elevating speed of the normal car 2.

  The image data acquisition unit 22 acquires data of a photographed image from the first imaging device 15 and the second imaging device 16 under the control of the control unit 50. The image data acquisition unit 22 transmits data of images acquired from the first imaging device 15 and the second imaging device 16 to the image analysis unit 23.

  The image analysis unit 23 performs image processing necessary for the image data transmitted from the image data acquisition unit 22 under the control of the control unit 50. The image analysis unit 23 analyzes what kind of abnormality such as deformation or breakage has occurred in which position in the hoistway 18 according to the analysis diagnostic program stored in advance, and analyzes the analysis data in the abnormality diagnosis unit 30. It transmits to the image diagnostic part 31 to comprise.

[Abnormal diagnostic department]
The abnormality diagnosis unit 30 is a device that diagnoses whether an abnormality such as deformation or breakage of the equipment in the hoistway 18 affects the elevation of the car 2, and includes an image diagnosis unit 31, an operation stop instruction unit 32, A normal driving command unit 33, a sensing level changing unit 34, and a temporary recovery driving command unit 35 are provided.

Under the control of the control unit 50, the image diagnosis unit 31 uses analysis data sent from the image analysis unit 23 and analysis data based on image data acquired in advance during normal operation, in the hoistway 18. Diagnose the presence of abnormalities such as deformation or breakage in the internal equipment. First, the image diagnosis unit 31 diagnoses the state in the hoistway 18 divided into the following two cases.
(A) When a serious abnormality affecting the traveling of the car 2 occurs in the hoistway 18 (B) When a serious abnormality affecting the traveling of the car 2 does not occur in the hoistway 18

  Here, "a serious abnormality that affects the traveling of the car 2" means an abnormality that affects the traveling of the car 2, such as the possibility that the internal device of the hoistway 18 and the car 2 may buffer.

  When the diagnostic imaging unit 31 diagnoses as (A) described above, that is, when a serious abnormality affecting the traveling of the car 2 occurs in the hoistway 18, the signal relating to the operation suspension is an operation suspension instruction Send to section 32.

On the other hand, when the image diagnostic unit 31 diagnoses as (B), that is, when it is determined that a serious abnormality affecting the traveling of the car 2 does not occur in the hoistway 18, the image diagnostic unit 31 performs a diagnosis further divided into the following two types of cases.
(C) When an abnormality occurs in which the risk of long objects is increased (D) When an abnormality in which the risk of long objects is increased does not occur

  When the diagnostic imaging unit 31 diagnoses (C) as described above, that is, when it is determined that an abnormality in which the risk of catching a long object is increased is occurring, the diagnostic imaging unit 31 detects the sensitivity level changing unit 34. Send diagnostic results to The abnormality E shown in FIG. 3 is an example of the abnormality diagnosed as (C) above. The “abnormality that increases the risk of catching a long object” is diagnosed based on the “sensing level” set in the vibration sensing unit 8. A method of diagnosing the risk of catching when abnormality E occurs will be described with reference to FIG.

The swing width of the long object decreases with distance from the center position. For this reason, the magnification N relating to the variation of the swing width according to the distance from the center portion O of the main cord 4 can be calculated so that the swing width at each position of the main cord 4 can be calculated from the swing width at the central portion O of the main cord 4 <N ≦ 1) is calculated in advance, and stored in a storage unit (not shown) of the control unit 50. Then, when the abnormality E is detected, the image diagnosis unit 31 detects the height at which the abnormality E occurs from the current sensing level W ₀ and the magnification N ₁ determined at the distance H from the center O. The swing width of the main rope 4 is calculated. Width _{W 1} shake corresponding to the sensed level _{W 0} at a position at a distance H from the center O of the main ropes _4, the W _{1 =} N 1 _{W 0.}

Next, imaging unit 31, the distance x from the main ropes 4 to abnormal E is to diagnose whether larger or smaller than the amplitude W ₁ of the sensing level W ₀ at that position. As shown in FIG. 3, when x <W ₁ , the image diagnosis unit 31 diagnoses that “an abnormality that the risk of catching a long object is increased is occurring” and senses the diagnosis result. Send to the level change unit 34.

On the other hand, when the image diagnostic unit 31 diagnoses as (D) described above, that is, when there is no abnormality that the risk of catching a long object increases, the image diagnostic unit 31 outputs a signal relating to normal operation. It is sent to the normal operation command unit 33. For example, even when an abnormality has occurred, if the abnormality is not inside the sensing level W ₀ of the main cord 4 shown in FIG. 3, that is, if there is no abnormality within the imaginary line indicated by the alternate long and short dash line a1. The image diagnostic unit 31 diagnoses the above (D).

  The sensing level changing unit 34 sets a new sensing level based on the diagnosis result sent from the image diagnostic unit 31 under the control of the control unit 50. A virtual line indicated by a two-dot chain line a2 in FIG. 3 indicates a locus of the main cord 4 when vibrating at a new sensing level Wr set when the abnormality E occurs in the vicinity of the main cord 4. The new sensing level Wr is set within a range where the main cord 4 does not touch the abnormality E as shown in FIG. This setting method will be described.

The sensing level changing unit 34 calculates a swing width Wa in which the main rope 4 does not hit the abnormality E at the position (height) at which the abnormality E occurs. Then, using this amplitude Wa, width Wr deflection at the center O of the main ropes 4 can be calculated by Wr = Wa / _{N 1.} Sensing the level changing unit 34, under control of the control unit 50, the amplitude Wr as a new sensing level Wr, to change the sensing level W ₀ in the comparing and judging section 83 of the vibration detecting portion 8 to the sensing level Wr.

  Then, after setting the new sensing level Wr, the sensing level changing unit 34 transmits a signal relating to the temporary recovery operation to the temporary recovery operation command unit 35. Each data, analysis result, etc. used by the image analysis unit 23, the image diagnosis unit 31, and the sensing level change unit 34 are stored in a storage unit (not shown) provided in the control unit 50 each time. .

  The normal operation command unit 33 gives a command for normal operation to the elevator control device 40 under the control of the control unit 50. In addition, the operation stop instruction unit 32 gives the elevator control device 40 an instruction to stop the operation under the control of the control unit 50. In addition, the temporary recovery operation command unit 35 gives a command of temporary recovery operation to the elevator control device 40 under the control of the control unit 50. Then, under the control of the control unit 50, the elevator control device 40 controls the operation and stop of the car 2 based on the given command.

  As described above, in the present embodiment, based on the result of inspection by the hoistway inspection device 20, the abnormality diagnosis unit 30 determines how much the abnormality occurred in the hoistway 18. Then, depending on the degree of the abnormality, it is determined whether to perform the normal operation, the temporary recovery operation, or the operation stop.

  In addition, the judgment criteria which concern on (A)-(D) mentioned above can be suitably set with the specification of the elevator apparatus 1. FIG. For example, in the case of focusing on the main rope vibration, whether or not “a significant abnormality affecting the traveling of the car 2 is occurring in the hoistway” at the distance from the main cord 4 to the abnormal part It can be determined whether or not there is an abnormality that increases the risk of hooks being caught.

  Further, in the present embodiment, the image diagnostic unit 31 compares the image acquired by the hoistway inspection apparatus 20 with the image in the hoistway 18 photographed at normal time to detect an abnormality generated in the hoistway 18. I showed you how. However, the method of abnormality diagnosis is not limited to this. For example, marking is performed in advance on the inspection portion of the hoistway 18 to be inspected by the shaft inspection device 20, and the deformation amount of the portion is detected from the image data May be used.

  Further, in the above description, attention was paid to the main cord vibration, and the diagnosis method of the image diagnostic unit 31 and the change method of the sensing level change unit 34 were described. Image diagnosis may be performed for each object, and the sensing level changing unit 34 may change the sensing level for each long object. This enables safer elevator travel.

3. Control Method of Elevator Device Next, an example of a control method of the elevator device 1 of the present embodiment will be described. FIG. 4 is a flowchart showing a control method of the elevator apparatus 1 of the present embodiment. Here, an explanation will be given from the stage after it is determined that “shake exists” in the comparison determination unit 83 of the vibration sensing unit 8 when an earthquake or strong wind occurs and the building shakes. That is, based on the detection result of the vibration in the accelerometer 81, the process after it is determined that the swing width of the long object calculated by the swing width calculating unit 82 has reached the detection level will be described.

  If the comparison / determination unit 83 determines “shake” due to an earthquake or strong wind, the control operation command unit 84 gives the elevator control device 40 a command to perform control operation under the control of the control unit 50, thereby, Control operation is started. As described above, the content of the control operation changes depending on whether the "high swing" or "low swing", but the explanation will be continued here assuming that the "high swing" is determined.

  When the control operation is started, the car 2 stops at the nearest floor and then stops the operation (step S2). When there are passengers in the car 2, the car 2 is dismounted to the nearest floor. Thereafter, in the vibration sensing unit 8, it is confirmed that the swing of the long object has converged (step S3).

  Thereafter, it is confirmed that there are no passengers in the car 2 by the signal from the in-car load detector (not shown) (step S4). Next, inspection in the hoistway 18 is started using the hoistway inspection device 20 (step S5). Here, under the control of the control unit 50, while the car 2 is driven at a low speed in a preset range, the first imaging device 15 and the second imaging device 16 perform imaging in a target hoistway 18. The first imaging device 15 and the second imaging device 16 perform imaging in the hoistway 18 under the range and conditions set by the condition setting unit 21.

  The images captured by the first imaging device 15 and the second imaging device 16 are sent to the image analysis unit 23 through the image data acquisition unit 22 and analyzed by the image analysis unit 23 according to an analysis diagnostic program set in advance. Be done. Then, analysis data obtained by the image analysis unit 23 is sent to the image diagnosis unit 31 in the abnormality diagnosis unit 30.

  Next, in the image diagnosis unit 31, whether the analysis data sent from the image analysis unit 23 is compared with the analysis data acquired during normal operation, and whether there is a significant abnormality affecting the traveling of the car 2 or not (Step S6).

  In the case of "YES" in step S6, that is, when it is determined that there is a serious abnormality affecting the traveling of the car 2, a signal relating to the operation suspension is sent to the operation suspension command unit 32, and the operation suspension command unit The command 32 gives the elevator control device 40 a command to stop operation (step S7). Thereby, the operation of the elevator apparatus 1 is suspended. In this case, the operation of the elevator apparatus 1 can be restored through the repair and inspection of the maintenance staff dispatched to the site.

  On the other hand, in the case of "NO" in step S6, that is, when it is judged that there is no serious abnormality affecting the traveling of the car 2, the image diagnostic unit 31 further causes an abnormality that the risk of catching long objects increases. It is determined whether there is any (step S8). The diagnostic method here is as described with reference to FIG.

  In the case of "NO" in step S8, that is, when it is determined that there is no abnormality that increases the risk of catching a long object, a signal relating to the normal operation is sent to the normal operation command unit 33 and the normal operation command unit 33 , Give the elevator device 1 a command for normal operation (step S9). Thereby, the elevator apparatus 1 starts normal operation.

  If "YES" in step S8, that is, if it is determined that there is an abnormality that increases the risk of catching the long object, the detection level of the comparison determination unit 83 is changed (step S10). Here, as described with reference to FIG. 3, the sensing level changing unit 34 calculates a new sensing level based on the diagnosis result sent from the image diagnostic unit 31. Then, the new sensing level is transmitted to the comparison and determination unit, and the sensing level held in the comparison and determination unit is changed.

  Thereafter, the sensing level changing unit 34 sends a signal relating to the temporary recovery operation to the temporary recovery operation command unit 35, and the temporary recovery operation command unit 35 gives the elevator control device 40 a command for temporary recovery operation (step S11). .

  In addition, when inspecting the inside of the hoistway in step S5, the car 2 is moved up and down at a low speed, but when it is detected that the long object is caught during the inspection in the hoistway 18, the operation is immediately performed. It is preferable to stop the In addition to the diagnosis based on the image data of the first imaging device 15 and the second imaging device 16, the long object is caught by raising and lowering the car 2 by measuring the torque of the hoisting machine 6 and the tension of the long object. It can be detected.

  According to the elevator apparatus 1 of the present embodiment, even if an abnormality such as deformation or breakage of an internal device of the hoistway 18 occurs, the elevator apparatus 1 is temporarily set by setting a new detection level by the detection level changing unit 34. It can be operated for recovery. Then, in the case where the temporary recovery operation is performed, if a seismic movement or the like occurs again and the swing of the long object occurs, the new sensing level is set. It is possible to stop the operation of the elevator apparatus 1 before the time of swinging.

  Conventionally, when the vibration sensing unit determines that the swing height is "high", operation start is performed after inspection of the equipment in the hoistway by a maintenance worker dispatched to the site. However, in the present embodiment, in the hoistway inspection apparatus 20 and the abnormality diagnosis unit 30, there is no problem in the operation of the elevator apparatus 1, but it is determined that there is an abnormality that increases the risk of catching a long object when swinging again. In this case, the temporary recovery operation is performed after changing the sensing level. As a result, the temporary recovery operation can be started after avoiding the risk that a long object may be caught in a possible earthquake motion again and an accident in which a passenger is trapped occurs, so safety during temporary recovery operation can be reduced. It can be secured.

  Also, conventionally, when the vibration sensing unit 8 determines that the swing height is "high" and the operation of the elevator apparatus 1 is stopped, the maintenance worker needs to be dispatched to the site to perform the maintenance for the restoration of the operation. The Therefore, in a large-scale earthquake, maintenance personnel need to go around each building in turn, and there is a problem that it takes a long time to restore the elevator device 1 in all the buildings. On the other hand, in the present embodiment, even in the case of "high swing", the temporary recovery operation can be started under the condition for avoiding the risk of catching the long object.

  Then, conventionally, after the maintenance worker arrives at the site, the maintenance worker inspects an abnormality occurrence part in the hoistway 18. On the other hand, in the present embodiment, since the abnormality occurrence part is detected in advance by the hoistway inspection apparatus 20, the work time of the maintenance worker can be shortened, and the burden on the maintenance worker can be reduced.

  In this embodiment, although the imaging apparatus is used in the hoistway inspection apparatus 20, it may be configured to perform abnormality diagnosis using sound data such as noise and abnormal sound generated when moving the car 2 up and down. Further, it may be configured to diagnose abnormality by a combination of sound data and image data.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to the structure described in the above-mentioned embodiment, The structure can be suitably changed in the range which does not deviate from the meaning. It is a thing. In addition, the embodiment examples described above are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. For example, with respect to a part of the configuration of the embodiment, it is possible to add, delete, and replace other configurations.

  DESCRIPTION OF SYMBOLS 1 ... Elevator apparatus, 2 ... Car, 3 ... Balance weight, 4 .. Main rope, 5 ... Machine room, 6 ... Winding machine, 7 ... Main rope pulley, 8 ... Vibration sensing part, 9 ... Governor rope, DESCRIPTION OF SYMBOLS 10 Speed governor, 11 Speed governor pulley, 12 Balance rope, 13 Compensating pulley, 14 Cage frame, 15 First imaging device, 16 Second imaging device, 17 Traveling cable, 18 Reference numeral 19: Fixed part, 20: Main shaft inspection device, 30: Abnormality diagnosis part, 34: Sense level changing part, 40: Elevator control device, 50: Control part

Claims (6)

With the hoistway,
Whether to move up and down in the hoistway,
And an elevator control device for controlling the elevation of the car.
The vibration of the hoistway is detected, and the swing width of the long object disposed in the hoistway is calculated, and the preset reference value of the swing width and the calculated swing width of the long object And a vibration sensing unit which gives a control operation command or a normal operation command to the elevator control device based on the comparison result,
A hoistway inspection apparatus that inspects the inside of the hoistway when the vibration sensing unit gives the elevator control apparatus a control operation command to put the car into control operation and then stop operation;
When it is diagnosed from the data sent from the hoistway inspection device that there is no serious abnormality that affects the running of the car but an abnormality that increases the risk of long objects being caught has occurred. An elevator apparatus comprising: an abnormality diagnosis unit that changes a reference value of a swing width set in the vibration sensing unit and gives a temporary recovery operation command to the elevator control device. When the abnormality diagnosis unit diagnoses from the data sent from the hoistway inspection device that a serious abnormality that affects the traveling of the car has occurred, the elevator control device issues an operation stop command. The elevator apparatus according to claim 1. From the data sent from the hoistway inspection device, the abnormality diagnosis unit does not generate a serious abnormality that affects the traveling of the car, and an abnormality that increases the risk of catching a long object occurs. The elevator apparatus according to claim 1, wherein a normal operation command is given to the elevator control device when it is diagnosed that the vehicle is not present. The hoistway inspection apparatus according to any one of claims 1 to 3, wherein the hoistway inspection apparatus comprises an imaging device provided at an upper portion and a lower portion in the raising and lowering direction of the car and an image analysis unit analyzing an image captured by the imaging device. The elevator apparatus as described in any one. The elevator according to any one of claims 1 to 4, wherein the abnormality diagnosis unit diagnoses an abnormality using analysis data of an image sent from the image analysis unit and data acquired during normal operation. apparatus. With the hoistway,
Whether to move up and down in the hoistway,
An elevator control device for controlling the elevation of the car;
A vibration sensing unit for sensing the vibration of the hoistway;
A control method of an elevator apparatus comprising: a hoistway inspection apparatus for inspecting the inside of a hoistway; and an abnormality diagnosis unit for diagnosing an abnormality from data obtained by the hoistway inspection apparatus,
The vibration sensing unit detects the vibration of the hoistway and calculates the swing width of the long object disposed in the hoistway, and the reference value of the swing width set in advance and the calculated long length Compare the swing of the object and give a control operation command or a normal operation command to the elevator control device based on the comparison result,
When the vibration detection unit gives the elevator control device a control operation command to put the car into a stopped state after controlling the car, the hoistway inspection device inspects the inside of the hoistway,
The abnormality diagnosis unit diagnoses an abnormality occurring in the hoistway from the data sent from the hoistway inspection device, and the abnormality diagnosis unit generates a serious abnormality affecting the traveling of the car. Although it is not determined that there is an abnormality that increases the risk of catching a long object, it is possible to change the reference value of the swing width set in the vibration sensing unit and to change the elevator control device. A control method for elevator equipment that gives temporary recovery operation commands.

Images