JP2020079142A - elevator - Google Patents

Abstract

Kind Code: A1 An elevator is provided in which it is possible to easily check whether a sensor is operating normally and to detect a failure of the sensor as early as possible. Kind Code: A1 An elevator (10) equipped with a rope swing detector (56) for detecting lateral swing of main ropes (M1-M8) based on information output from a range sensor (52) is detected by a range sensor (52) of a car (26). A storage unit 102 that stores reference data regarding behavior during normal operation to be performed, and an acquisition unit that acquires index data that indicates the actual behavior corresponding to the reference data of the car 26 by causing the range sensor 52 to detect the car 26. 104, and a determination unit 106 that compares the acquired index data with the reference data and determines whether or not the range sensor 52 has performed the desired detection. A check system 100 is provided to check whether the range sensor 52 is operating properly. [Selection drawing] Fig. 9

Description

  TECHNICAL FIELD The present invention relates to an elevator, and more particularly to an elevator including a rope shake detection device that detects a shake of a main rope and a balance rope caused by a shake of a building in which the elevator is installed due to an earthquake or the like.

  In recent years, as the height of buildings has increased, there has been a problem in the rope-type elevator that the main rope or the like shakes due to the shaking of the building due to an earthquake or a strong wind.

  Most of the rope-type elevators installed in a high-rise building have a machine room above the top of the hoistway of a car, and a hoisting machine that drives the car is installed in the machine room. A main rope is hung on the sheave that constitutes the hoisting machine, a car is connected to one end side of the main rope, and a counterweight is connected to the other end side of the main rope. ing. Further, a balance rope having a balance wheel at the lowermost end is hung between the basket and the counterweight.

  Then, by rotating the sheave in the forward or reverse direction by the prime mover, the car guided by the pair of car guide rails laid in the vertical direction is moved up and down.

  In an elevator having such a configuration, for example, when a building shakes due to long-period ground motion, a main rope that suspends a car from the top of the building and a balance rope that is suspended from the car (hereinafter, this section and [Invention In the [Problems to be solved] column, the main rope and the balance rope are collectively referred to simply as "ropes".), but swing in the horizontal direction in the same direction as the shaking of the building (hereinafter, this horizontal direction). The shake of the rope is called "lateral shake".)

  Conventionally, the magnitude of the lateral shake is estimated from the magnitude of the shake of the building detected by the long-period vibration sensor installed in the building, and the elevator control operation is performed according to the degree of the lateral shake. Has been carried out, and the operation of the elevator is temporarily stopped. However, the size of the lateral shake that can be grasped from the size of the shaking of the building is only an estimate, so in reality, there may be cases where the lateral shake is of a size that is not enough to temporarily stop the elevator. Conceivable. In this case, the operation of the elevator is unnecessarily stopped, which leads to a drop in service for users.

  On the other hand, Patent Document 1 discloses a rope shake detection device that directly detects whether or not the magnitude of the lateral shake of the rope exceeds a certain threshold value.

The rope shake detection device of Patent Document 1 has a sensor in which a light emitter and a light receiver form one set. This sensor is referred to as a first rope lateral vibration sensor 12, and in paragraphs [0028] and [0029] of Patent Document 1,
[FIG. 4 is a plan view showing a first example of the first rope lateral vibration sensor 12 of FIG. 1. In this example, the first rope lateral vibration sensor 12 includes a light projector 21 that projects the detection light 20 and a light receiver 22 that receives the detection light 20. The light projector 21 and the light receiver 22 are arranged on both sides of the car 7 in the width direction (Y-axis direction in the drawing) when viewed from directly above. The detection light 20 is projected in parallel and horizontally in the width direction of the car 7.
When the amplitude of the lateral vibration of the main rope 6 in the front-back direction of the car 7 (X-axis direction in the drawing) reaches a preset amplitude threshold value, the detection light 20 is blocked. That is, in this example, an intermittent ON/OFF signal is output according to the lateral vibration of the main rope 6. When two amplitude thresholds are set as described above, the two sets of the projector 21 and the photoreceiver 22 are arranged so that the distance from the main rope 6 to the detection light 20 is different. ]
Is written.

  According to the rope shake detection device of Patent Document 1, it is possible to detect the degree of lateral shake of the main rope 6 in the X-axis direction in two stages.

  Further, Patent Document 1 discloses, as a second example, an example in which the light projector 21 and the light receiver 22 are installed on both sides of the car 7 in the front-rear direction (X-axis direction in the drawing) as a second example.

  Therefore, according to FIG. 4 and FIG. 5 of Patent Document 1, and the description thereof, according to the rope shake detection device of Patent Document 1, the front-back direction (X-axis direction of FIG. 4) and width direction (of FIG. 5) of the car 7 It is possible to detect the degree of lateral shake of the main rope 6 swinging in the Y-axis direction) in two stages. As a result, the control operation of the elevator can be performed in stages according to the magnitude of the lateral shake.

JP, 2014-156298, A (patent No. 5791645). JP, 2006-124102, A (patent No. 4773704).

  By the way, if the sensor which constitutes the above-mentioned rope runout detecting device breaks down, there is a possibility that an unnecessary shift to the control operation may occur, which may lead to a decrease in the operation efficiency of the elevator and thus a decrease in the service to the user. Not only that, even if it is necessary to shift the elevator from the normal operation to the control operation, there is a possibility that the shift cannot be properly executed.

  Therefore, in order to avoid such a situation, it is necessary to inspect whether or not the sensor is out of order by performing regular maintenance and inspection. However, since the above-mentioned sensor is installed in the hoistway, a worker who performs maintenance and inspection is forced to perform a complicated work in the hoistway while the operation of the elevator is temporarily stopped.

  Further, in the case of a sensor failure, it is desirable from a viewpoint of system reliability to grasp it as early as possible.

  In view of the above-mentioned problems, the present invention provides an elevator that can easily check whether or not a sensor is operating normally and can detect a sensor failure as early as possible. To aim.

  In order to solve the above problems, the elevator according to the present invention, based on information output from a sensor installed outside the ascending/descending path of an elevating body including a car and a counterweight that ascend/descend the hoistway in the opposite direction, An elevator equipped with a rope shake detection device for detecting lateral shake of a car and a main rope that suspends the counterweight, and stores reference data regarding behavior during normal operation to be detected by the sensor of the lifting body. A storage unit, an acquisition unit that causes the sensor to detect the lifting body, and acquires index data indicating an actual behavior corresponding to the reference data of the lifting body, and the acquired index data in comparison with the reference data. And an inspection system that includes a determination unit that determines whether or not the sensor has performed an intended detection, and that checks whether or not the sensor is operating normally based on the determination result of the determination unit. It is characterized by having.

  Further, the reference data is characterized in that it includes data regarding a timing at which the sensor should detect the elevator when the car moves from a stop floor to a destination floor.

  Further, the inspection system, according to the combination of the stop floor and the destination floor of the car, the behavior of the car side of the lifting body or the behavior of the counterweight side, or the behavior of both by the sensor. It is characterized by being a detection target.

  In addition, the sensor is a range sensor that measures a direction and a distance of an object in the hoistway existing on a horizontal plane including the installation position from the installation position, and outputs the direction and the distance as position information. Is characterized by.

  According to the elevator of the present invention having the above configuration, it is possible to easily check whether or not the sensor is normally operating by software processing by using the information obtained from the existing rope shake detection device. There is no need for the staff to perform maintenance inspections in the hoistway. Further, since the inspection can be performed during the normal operation of the elevator, even if the sensor fails, it becomes possible to grasp the failure as early as possible.

It is a figure which shows schematic structure of the elevator which concerns on Embodiment 1. It is a figure which shows an example of how to hang various ropes (roping) in the said elevator. It is a conceptual diagram for demonstrating an example of arrangement|sequence of the several main rope which comprises a main rope group. It is a top view showing the inside of a hoistway cut near the upper part of a range sensor which is a component of a rope runout detecting device with which the above-mentioned elevator is provided. (A) is a functional block diagram of a control circuit unit, (b) is a detailed functional block diagram of a rope shake amount detection part. (A) is a diagram in which the coordinates of an object detected by one scan of the range sensor are plotted, and (b) is the coordinates shown in (a) by the unnecessary coordinate excluding unit of the control circuit unit. It is a figure which shows the result of removing unnecessary coordinates from FIG. FIG. 7 is a diagram showing a result of monitoring a specific one coordinate of the plurality of coordinates shown in FIG. 6B for a predetermined time (a plurality of scans during the predetermined time). It is a figure for demonstrating the other form of the assumption coordinate area|region in the said embodiment. (A) is a functional block diagram of an operation control part, (b) is a detailed functional block diagram of a rope shake amount detection part and an inspection system. (A) is a figure which shows reference data, (b) is a figure which plotted the coordinate data contained in reference data. It is a flowchart of a trouble inspection process of the range sensor. It is the figure which plotted the coordinate which shows the state which the range sensor detected the counterweight. It is a detailed functional block diagram of a rope runout amount detection part and an inspection system with which the elevator concerning Embodiment 2 is provided. (A) is a figure which shows the reference|standard data of the car in Embodiment 2, (b) is the figure which plotted the coordinate data contained in the reference|standard data of a car. (A) is a figure which shows the reference data of the counterweight in Embodiment 2, (b) is the figure which plotted the coordinate data contained in the reference data of the counterweight. 9 is a flow chart of fault inspection processing of a range sensor according to the second embodiment.

  Embodiments of an elevator according to the present invention will be described below with reference to the drawings.

<Embodiment 1>
The elevator 10 according to the first embodiment includes a rope shake detection device described later. FIG. 1 is a front view of a hoistway 12 in which an elevator 10 having a range sensor 52, which is a component of a rope shake detection device, is housed, as seen from a landing (not shown) side (in FIG. 1, the range sensor is shown). 52 is not shown.), and FIG. 2 is a right side view of the elevator 10.

  As shown in FIGS. 1 and 2, the elevator 10 is a rope type elevator that employs a traction system as a drive system. A machine room 16 is provided in the building 14 above the top of the hoistway 12. A hoisting machine 18 and a deflector wheel 20 are installed in the machine room 16. A plurality of main ropes are wound around the sheave 22 and the deflecting wheel 20 which constitute the hoisting machine 18. The plurality of main ropes will be referred to as a “main rope group 24” (note that the main rope group 24 is not shown in an accurate number in FIG. 1).

  A car 26 is connected to one end of the main rope group 24, and a counterweight 28 is connected to the other end of the main rope group 24. The car 26 and the counterweight 28 are suspended by the main rope group 24 in a hanging manner. It has been lowered.

  Between the car 26 and the counterweight 28, a plurality of balance ropes with a balance wheel 30 hung at the lowermost end are suspended. The plurality of balance ropes will be referred to as "balance rope group 32". In this example, the number of main ropes forming the main rope group 24 and the number of balance ropes forming the balance rope group 32 are the same (8 in this example). The diameters of the main rope and the balance rope are generally 10 mm to 20 mm. The number of main ropes forming the main rope group 24 and the number of main ropes forming the balance rope group 32 are not limited to the above-mentioned number, and may be arbitrarily selected according to the specifications of the elevator.

  A traveling cable 34 hangs from the lower end of the car 26, and the end of the traveling cable 34 on the opposite side of the car 26 is a cable connection box installed on the side wall of the hoistway 12 in the vertical direction. (Not shown). That is, the traveling cable 34 is suspended in a slender U shape between the lower end of the car 26 and the cable connection box. The traveling cable 34 is a cable that transmits electric power and signals between the car 26 and a control panel 44 described later, and is a cable that moves up and down according to the movement of the car 26. A flat cable is generally used as the traveling cable 34, and for example, the thickness thereof is 15 mm and the width thereof is about 100 mm.

  Inside the hoistway 12, a pair of car guide rails 36 and 38 and a pair of counterweight guide rails 40 and 42 are laid vertically (both not shown in FIGS. 1 and 2; See FIG. 4).

  In the elevator 10 having the above configuration, when the sheave 22 is rotated in the normal or reverse direction by a hoist motor (not shown), the main rope group 24 wound around the sheave 22 travels and the main rope group 24 The suspended basket 26 and the counterweight 28 move up and down in opposite directions. Along with this, the balance rope group 32 hung between the car 26 and the balance weight 28 runs back in the balance wheel 30. Furthermore, as the car 26 moves up and down, the lower end of the traveling cable 34 suspended in a U shape is also displaced in the vertical direction. The hoist motor described above is provided with an absolute type rotary encoder (not shown). In the elevator 10, the position of the car 26 in the vertical direction of the hoistway 12 can be grasped from the output value (rotation angle) from this rotary encoder.

  In the machine room 16, a power supply unit (not shown) that supplies electric power to various devices (not shown) installed in the hoisting machine 18 and the car 26, and a control circuit unit 46 that controls these devices (see FIG. 5). ) Is installed.

  The control circuit unit 46 has a configuration in which a ROM and a RAM are connected to the CPU (both not shown). By executing various control programs stored in the ROM, the CPU centrally controls the hoisting machine 18 and the like to realize normal operation such as smooth elevator operation of the car, while an earthquake or the like may occur. If it occurs, control operation will be implemented to ensure passenger safety.

  Here, as shown in FIG. 2, in the main rope group 24, a portion for suspending the car 26 is referred to as a car-side main rope portion 24A, and a portion for suspending the counterweight 28 is referred to as a counterweight-side main rope portion 24B. I will call it. In addition, in the balance rope group 32, a portion hanging from the car 26 (a balance rope group 32 portion between the car 26 and the balance wheel 30) is referred to as a car side balance rope portion 32A, and a balance weight 28 The portion (the portion of the balance rope group 32 between the balance weight 28 and the balance wheel 30) that is hung from is referred to as the balance weight side balance rope portion 32B. According to the above definition, the length (range) of the car side main rope portion 24A and the counterweight side main rope portion 24B occupying the main rope group 24, and the car side balancing rope portion occupying the balance rope group 32. The length (range) of 32A and the balance rope portion 32B on the counterweight side expands and contracts (varies) depending on the vertical position of the car 26 and the counterweight 28.

  The arrangement of a plurality of (eight in this example) main ropes M1 to M8 that constitute the main rope group 24 will be described with reference to FIG. FIG. 3 is a conceptual diagram showing a main rope group 24 portion between the sheave 22 and the car 26, that is, a car-side main rope portion 24A.

  The upper view of FIG. 3(a) is a view of the sheave 22 and a part of the car-side main rope portion 24A viewed from the front, and the lower view of FIG. 3(a) is a view of the car 26 viewed from the top. is there. The lower diagram of FIG. 3A is a diagram showing the correspondence relationship between the main ropes M1 to M8 constituting the main rope group 24 and the main ropes M1 to M8 in a plan view with respect to the car 26. FIG. 3B is a diagram of the sheave 22, the car-side main rope portion 24A, and a part of the car 26 as viewed from the left side.

  As shown in the upper diagram of FIG. 3A, the eight main ropes M1 to M8 are wound around the sheave 22 in the horizontal direction (axial direction of the sheave 22) at equal intervals. There is. The lower ends of the main ropes M1 to M8 are composed of odd-numbered main ropes M1, M3, M5 and M7 and even-numbered main ropes M2, M4, M6 and M8 as shown in the lower diagram of FIG. They are sorted into rows and connected to the car 26.

  In this way, when the two ropes are distributed in one row, when they are connected in one row, due to the size (outer diameter) of the stopper (shackle rod) that connects the ends of the main ropes M1 to M8 to the car 26, This is because it is larger than the interval between the main ropes M1 to M8 in FIG.

  The intervals of the main ropes M1, M3, M5, M7 and the intervals of the main ropes M2, M4, M6, M8 at the connecting position to the car 26 are also equal, and the intervals of the main ropes M1 to M8 in the horizontal direction are also equal. Is. Therefore, the main ropes M1, M3, M5, M7, the main ropes M2, M4, M6, M8 of the main rope group 24 portion (car side main rope portion 24A) from the sheave 22 to the car 26, and the main ropes M1 to M8. The horizontal intervals are at equal intervals at both upper and lower positions.

  The arrangement of the main ropes M1 to M8 in the counterweight side main rope portion 24B is basically the same as that of the car side main rope portion 24A described above (FIG. 8). Also, regarding the plurality of (eight in this example) balancing ropes C1 to C8 forming the balancing rope group 32, only the difference in whether the folding position is the sheave 22 or the balancing wheel 30 is different. (That is, only the vertical direction is opposite), the arrangement of the plurality of ropes in the car side balance rope portion 32A, the balance weight side balance rope portion 32B, as shown in FIGS. 8 and 4, respectively. Basically, it is similar to the car side main rope portion 24A and the counterweight side main rope portion 24B, respectively.

  When the building 14 in which the elevator 10 having the above-described configuration is installed is shaken by a long-period earthquake or strong wind, the main rope group 24 and the balance rope group 32 laterally shake in the same direction as the building 14. In this case, in order to realize the control operation according to the degree of the lateral shake, a rope shake detecting device for detecting the degree of the amplitude of the lateral shake is provided.

  As shown in FIG. 2, the range sensor 52, which is a component of the rope shake detection device, is installed on the side wall at the center of the hoistway 12 in the vertical direction. Here, as shown in FIG. 4, the hoistway 12 is a space surrounded by four side walls 54 in this example, and when it is necessary to distinguish the four side walls 54, the reference numeral “54” is used. The letters A, B, C, D will be added. The range sensor 52 is installed on the side wall 54A on the side of the landing (not shown). Further, the range sensor 52 is installed outside the ascending/descending path of the car 26 and the counterweight 28, as shown in FIGS. 2 and 4.

  The range sensor 52 measures the direction and distance from the installation position of the objects (usually a plurality) in the hoistway 12 existing on the horizontal plane including the installation position, and outputs the direction and distance as two-dimensional position information. . The two-dimensional position information is in polar coordinate format.

  The range sensor 52, for example, emits a laser beam at a predetermined angular interval (for example, 0.125 degrees), scans the horizontal plane in a fan shape, and measures the time for each emitted laser beam to reciprocate to the object. , A known two-dimensional range sensor (Laser Range Scanner) that measures the distance from the installation position of the range sensor 52 to an object by the optical time-of-flight ranging method (Time of Flight). The time per scan (scan time) is, for example, 25 msec. The scanning angle α of the range sensor 52 is close to 180 degrees as shown in FIG. 4, and almost the entire hoistway 12 on the horizontal plane including the installation position of the range sensor 52 is the scanning range.

  A method for detecting the amplitude of the car side main rope portion 24A and the car side balance rope portion 32A in the horizontal plane which are laterally shaken due to a long-period earthquake or strong wind will be described with reference to FIGS. 4 to 7 as appropriate. To do.

  The two-dimensional position information from the range sensor 52 is input to the rope shake amount detection section 50 of the control circuit unit 46 shown in FIG. The control circuit unit 46 includes an operation control unit 48 in addition to the rope shake amount detection unit 50. As described above, the operation control unit 48 controls various devices to realize the normal operation and the control operation.

  The two-dimensional position information in the polar coordinate format is converted into rectangular coordinates (xy rectangular coordinates) by the coordinate conversion unit 502 of the rope shake amount detection unit 50 shown in FIG.

  The Cartesian coordinates are, for example, xy Cartesian coordinates as shown in FIG. 6A with the installation position of the range sensor 52 (not shown in FIG. 6A) as the origin.

  In FIG. 6A, the car-side main rope portion 24A and the counterweight-side balance rope portion 32B are detected by one scan in a state where the range sensor 52 is within the scanning range (the state shown in FIG. 4). The coordinates of the object are plotted.

  In FIG. 6A, the reference numeral of the object corresponding to the plotted coordinates is shown in parentheses (FIG. 6B, FIG. 10B, FIG. 12, FIG. 14B, FIG. 15( The same applies to b)).

  As can be understood from the detection principle of the range sensor 52 described above, when the first object is detected, the second object (or the second object hidden behind the first object when viewed from the range sensor 52 (or, That part) is not detected. For example, a part of the side wall 54B is not detected because the part is hidden behind the guide rail 36 when viewed from the range sensor 52, and the balance ropes C1 to C8 are not detected. The balance ropes C1 to C8 are hidden behind the main ropes M1 to M8.

  Here, needless to say, among the coordinates shown in FIG. 6A, the necessary coordinates are the coordinates of the main ropes M1 to M8 related to the car-side main rope portion 24A, and the coordinates of other objects are: This is an obstacle to specifying the main ropes M1 to M8. When the car 26 is located above the range sensor 52, the balancing ropes C1 to C8 related to the car-side balancing rope portion 32A are required to be detected.

  Therefore, considering the expected range of lateral shake that may occur in the car-side main rope portion 24A and the car-side balancing rope portion 32A, in the scanning surface (horizontal plane) of the range sensor 52, the car-side main rope portion 24A and the car An assumed coordinate region R1 (a region surrounded by a dashed line in FIG. 6) in which only the side balance rope portion 32A is assumed to exist is set in advance. In this example, the assumed coordinate area R1 is, as shown in FIG. 6A, the coordinates (X1, Y1), (X2, Y2), (X3, Y3), (X4, Y4) of the four points P1 to P4. Is defined by The set of the coordinates P1 to P4 is stored in the assumed coordinate area storage unit 506 (FIG. 5B) of the rope shake amount detection unit 50 as "R1 demarcation information".

  As described above, the two-dimensional position information output from the range sensor 52 is input to the coordinate conversion unit 502 and converted from polar coordinates to rectangular coordinates in the coordinate conversion unit 502. The converted coordinates (orthogonal coordinates) are output from the coordinate conversion unit 502 and input to the unnecessary coordinate removal unit 504.

  The unnecessary coordinate eliminating unit 504 refers to the R1 demarcation information stored in the assumed coordinate region storage unit 506, and outputs only the coordinates belonging to the assumed coordinate region R1 among the coordinates of the object from the coordinate conversion unit 502. The output coordinates are input to the amplitude indexing unit 508. In other words, the unnecessary coordinate eliminating unit 504 eliminates and outputs the coordinates belonging to the outside of the assumed coordinate region R1 among the coordinates of the object from the coordinate converting unit 502, and the outputted coordinates are input to the amplitude indexing unit 508. To be done.

  FIG. 6B is a diagram in which the coordinates input to the amplitude indexing unit 508 are plotted on the rectangular coordinates. As shown in FIG. 6B, the coordinates input to the amplitude indexing unit 508 are only for the objects existing in the assumed coordinate region R1, that is, for the main ropes M1 to M8.

  Here, when the car-side main rope portion 24A shakes laterally due to the shaking of the building 14 due to a long-period earthquake or strong wind, each of the main ropes M1 to M8 forming the car-side main rope portion 24A is independent. However, if there is no obstacle, it basically shakes with the same behavior. That is, the horizontal shake occurs while maintaining the arrangement shown in FIG.

  Therefore, the amplitude indexing unit 508 determines the amplitude on the scanning surface (horizontal plane) of the entire car-side main rope portion 24A from the displacement of one of the main ropes M1 to M8.

  Specifically, for example, the amplitude is calculated from the displacement of the main rope (M1) shown in FIG. 6(b). Further, the displacement of the main rope M1 is specified by the leftmost coordinates (Xm1, Ym1) toward the paper surface of FIG. 6B among the coordinates corresponding to the main rope M1. The coordinate is specified as the coordinate having the smallest X coordinate value among the coordinates corresponding to the main ropes M1 to M8. Hereinafter, the coordinates (Xm1, Ym1) used for indexing the amplitude of the entire car-side main rope portion 24A will be referred to as "specific coordinates".

  The amplitude indexing unit 508 monitors the specific coordinates (Xm1, Ym1) from the coordinates input from the unnecessary coordinate eliminating unit 504 for each scan of the range sensor 52 for a predetermined time (over a plurality of scans). The predetermined time is, for example, an assumed maximum lateral shake period (for example, 10 seconds). Hereinafter, this predetermined time is referred to as "observation time".

  The result of one monitoring is shown in FIG. A plurality of specific coordinates (Xm1, Ym1) in one monitoring form a linear line as shown in FIG. 7 (hereinafter, this line is referred to as a "coordinate line"). The amplitude indexing unit 508 extracts the coordinates (Xe1, Ye1) and (Xe2, Ye2) located at both ends of the coordinate sequence, and calculates the distance SX between these two points. SX is considered to be the maximum amplitude SX that occurred during the observation time of one monitoring.

  The amplitude indexing unit 508 outputs SX to the shake level determination unit 510. The shake level determination unit 510 determines the level of the horizontal shake based on SX input from the amplitude indexing unit 508.

  The shake level determination unit 510 compares the predetermined amplitude reference values S1, S2, S3, S4 (S1<S2<S3<S4) with the amplitude SX as follows, and the amplitude SX indicates the shake level L0 (control It is determined which of the operation unnecessary level), L1 (extra low level), L2 (low level), L3 (high level), and L4 (extreme high level).

SX<S1→L0
S1≦SX<S2→L1
S2≦SX<S3→L2
S3≦SX<S4→L3
S4 ≤ SX → L4

  The shake level determination unit 510 outputs the shake level of the determination result (any one of L0, L1, L2, L3, and L4) to the operation control unit 48.

  The operation control unit 48 performs the control operation according to the shake level input from the shake level determination unit 510. The details of the control operation that differ depending on the level are omitted.

  In the elevator 10, the range sensor 52 and the rope shake amount detection unit 50 of the control panel 44 constitute a rope shake detection device 56 (FIG. 5), and as described above, the rope shake detection device 56 The range sensor 52 outputs, as two-dimensional position information, the direction and distance from the installation position of the object existing on the horizontal plane including the installation position, and the car-side main rope portion that suspends the car 26 from the two-dimensional position information. The position coordinates in the horizontal plane of one of the rope parts of the car side balancing rope part 32A hanging from the car 24A and the car 26 are detected, and the rope part is laterally detected from the position coordinates of the detected rope part. The amplitude of the lateral shake in the horizontal plane when shaken is determined.

  Therefore, according to the rope runout detecting device 56, the amplitude of the rope portion in any direction (ie, the magnitude of the lateral runout of the rope in any direction) can be obtained with one range sensor 52 (that is, without increasing the number of sensors). ) Can be detected.

  Here, in the above description, since the car 26 is located below the range sensor 52 (FIGS. 2 and 4), the car side main rope portion 24A exists in the assumed coordinate region R1 on the scanning surface of the range sensor 52. Although the scene is taken as an example, when the car 26 is located above the range sensor 52, the traveling cable 34 exists in the assumed coordinate region R1 of the range sensor 52 in addition to the car-side balancing rope portion 32A. This is the case (FIG. 8: the assumed coordinate region R1 is not filled in FIG. 8). That is, the assumed coordinate region R1 is, in plan view, only the car-side main rope portion 24A, the car-side balancing rope portion 32A, and the traveling cable 34 hung from the car 16 on the scanning surface (horizontal plane) of the range sensor 52. This is because it is also the coordinate area that is assumed to exist.

  Therefore, when the car 26 is located above the range sensor 52, it is necessary to exclude the coordinates corresponding to the traveling cable 34 from the coordinates output from the coordinate conversion unit 502. Therefore, in such a case, the range in which the traveling cable 34 may exist in the assumed coordinate area R1 (FIG. 4) is excluded from the assumed coordinate area R1, and the assumed coordinate shown in FIG. 8 is set as the second assumed coordinate area. The region R2 is set in advance. In this example, the assumed coordinate region R2 is, as shown in FIG. 8, coordinates (X1, Y1), (X2, Y2), (X3, Y3), (X5, Y5) of six points P1 to P3 and P5 to P7. ), (X6, Y6), (X7, Y7). That is, the rectangular area surrounded by the line segment that connects P4, P5, P6, P7, and P4 in this order is the range in which the traveling cable 34 can exist within the assumed coordinate area R1 (FIG. 4). The square area will be referred to as the "traveling cable exclusion area".)

  A set of coordinates P1 to P3 and P5 to P7 is stored in the assumed coordinate area storage unit 506 (FIG. 5B) of the rope shake amount detection unit 50 as “R2 demarcation information”.

  Information indicating the current position of the car 26 in the vertical direction of the hoistway 12 (hereinafter, referred to as “elevation position information”) is output from the operation control unit 48 to the unnecessary coordinate removing unit 504.

  The unnecessary coordinate excluding unit 504 refers to the ascending/descending position information output from the operation control unit 48, and determines the R1 depending on whether the car 26 is located above or below the installation position of the range sensor 52. The definition information to be referred to is switched between the information and the R2 definition information.

  That is, when the car 26 is located below the installation position of the range sensor 52, the unnecessary coordinate exclusion unit 504 refers to the R1 demarcation information stored in the assumed coordinate area storage unit 506 and refers to the coordinate conversion unit 502. Among the coordinates of the object from, only the coordinates that belong to the assumed coordinate area R1 are output to the amplitude indexing unit 508. On the other hand, when the car 26 is positioned above the installation position of the range sensor 52, the unnecessary coordinate exclusion section 504 refers to the R2 demarcation information stored in the assumed coordinate area storage section 506 and refers to the coordinate conversion section 502. Among the coordinates of the object from, only the coordinates belonging to the assumed coordinate area R2 are output to the amplitude indexing unit 508.

  As described above, the unnecessary coordinate exclusion unit 504 and the assumed coordinate region storage unit 506 determine which of the car-side main rope portion 24A and the car-side balanced rope portion 32A from the two-dimensional position information output from the range sensor 52. Functioning as a detection unit that detects the position coordinates of the rope portion on the horizontal plane including the installation position of the range sensor 52.

  In addition, when the car 26 is located above the installation position of the range sensor 52 and the lateral shake of the car side balance rope portion 32A is large, it is specified to determine the amplitude of the entire car side balance rope portion 32A. There is a possibility that the one balancing rope (for example, the balancing rope C1) will enter the traveling cable exclusion area. In this case, the coordinates of the entering balance rope C1 may be excluded by the unnecessary coordinate exclusion unit 504 and may not be input to the amplitude indexing unit 508. Then, the amplitude of the balance rope C1 cannot be obtained by the same method as described above.

  Therefore, assuming such a case, the amplitude of the balance rope C1 may be calculated as follows. That is, the amplitude is obtained by calculating the one-sided amplitude and doubling the one-sided amplitude.

  To this end, first, in a state where no lateral shake occurs in the car side balance rope portion 32A, the balance rope C1 is detected in advance and the coordinate value of the specific coordinate is stored (the coordinate value is Called "median".).

  Then, when horizontal shake occurs and a monitoring result similar to that shown in FIG. 7 is obtained (however, the coordinates in the traveling cable exclusion area cannot be obtained), the coordinates at both ends of the coordinate sequence are One-sided amplitude is calculated from the coordinate value and the median value of the coordinates farther from the traveling cable exclusion area. Then, the amplitude of the balance rope C1, and by extension, the cage side balance rope portion 32A is obtained by doubling the calculated one-sided amplitude.

  In this way, the rope shake detection device 56 detects the degree of lateral shake that occurs in the main rope group 24 and the balance rope group 32, and in detecting this lateral shake, it is output from the range sensor 52. Two-dimensional position information is essential. If the range sensor 52 fails, the rope shake detecting device 56 cannot perform its intended function. Therefore, in order to detect that the range sensor 52 has failed as early as possible, the elevator 10 has a built-in inspection system 100 for checking whether the range sensor 52 is operating normally. Has been.

  The inspection system 100 is configured to use the two-dimensional position information output from the range sensor 52 to check whether the range sensor 52 is operating normally. Specifically, during normal operation of the elevator 10, it is determined whether or not the car 26 moving up and down the hoistway 12 has been detected by the range sensor 52 as expected. The inspection system 100 will be described with reference to FIGS. 9 to 11 as appropriate.

  As shown in FIG. 9A, the inspection system 100 is incorporated in the operation control unit 48 that constitutes the control circuit unit 46. In the inspection system 100, the CPU of the control circuit unit 46 executes an inspection program, which will be described later, stored in the ROM, so that the inspection of the range sensor 52 is performed. The inspection system 100 includes a reference data storage unit 102, an index data acquisition unit 104, and a determination unit 106, as shown in FIG. 9B.

  The reference data storage unit 102 stores reference data regarding the behavior during normal operation that should be detected by the range sensor 52 of the car 26 that is an elevator. Specifically, the reference data is data regarding the timing at which the range sensor 52 should detect the car 26 when the car 26 moves from one stop floor to the next destination floor. In this example, as shown in FIG. 10A, the rotation angle E1 of the rotary encoder when the range sensor 52 detects the car 26 moving in the hoistway 12 is stored. Two-dimensional position information (coordinate data D1) indicating a state in which the range sensor 52 detects the car 26 is stored as reference data in association with the rotation angle E1.

  FIG. 10B is a diagram in which the coordinate data D1 stored in the reference data storage unit 102 is plotted on the rectangular coordinates. As shown in FIG. 10B, when the range sensor 52 detects the car 26, the coordinates for the main ropes M1 to M8 do not exist in the assumed coordinate region R1, and only the coordinates for the car 26 are present. Will exist.

  Returning to FIG. 9B, the index data acquisition unit 104, when the actual behavior of the car 26 corresponding to the reference data, that is, the rotation angle E1 indicated by the rotary encoder, moves up and down where the range sensor 52 is installed. Index data indicating that the car 26 is passing near the center in the vertical direction of the road 12 is acquired. In this example, as the index data, coordinate data Da having the same coordinates as the coordinates input from the unnecessary coordinate removing unit 504 to the amplitude indexing unit 508 is input to the index data acquisition unit 104. The input coordinate data Da is stored in the RAM that functions as a work memory.

  When the coordinate data Da is input to the index data acquisition unit 104, the determination unit 106 reads the coordinate data D1 stored in the reference data storage unit 102 and determines whether the coordinate data Da matches the coordinate data D1. Contrast. If the two match, the determination unit 106 determines that the range sensor 52 has performed the intended detection. On the other hand, if the two do not match, the determination unit 106 determines that the range sensor 52 is not performing the intended detection.

  In this way, in the inspection system 100, if the determination unit 106 determines that the two coordinate data D1 and Da match, and if they match, then the range sensor 52 is confirmed to be operating normally. If the two do not match, it is possible to know that the range sensor 52 has failed.

  Next, an example of a program that executes the inspection process by the inspection system 100 will be described with reference to the flowchart shown in FIG. In this example, it is assumed that the coordinate data D1 has already been stored in the reference data storage unit 102 after the preliminary preparation stage.

  In the elevator 10 in operation, when the next destination floor of the car 26 stopped at a certain floor is determined (step S1), the CPU of the control circuit unit 46 causes the car 26 moving to the destination floor to detect the range sensor 52. It is determined whether or not the scanning range is passed (step S2). When the car 26 does not pass through the scanning range (step S2: No), it waits until the next destination floor is determined. On the other hand, when the car 26 passes the scanning range (step S2: Yes), the index data acquisition unit 104 acquires the coordinate data Da (step S3).

  When the coordinate data Da is acquired, the determination unit 106 compares the acquired coordinate data Da with the coordinate data D1 stored in the reference data storage unit 102 in advance (step S4). Then, if the coordinate data D1 and the coordinate data Da match (step S5: No), the above-described processing is continuously executed. On the other hand, when the coordinate data D1 and the coordinate data Da do not match (step S5: Yes), the determination unit 106 determines that the range sensor 52 is not operating normally and reports that the range sensor 52 has failed. A notification is given (step S6), and the inspection process ends.

  In this way, according to the elevator 10, it is possible to easily check whether or not the range sensor 52 is normally operating by software processing by using the information obtained from the existing rope shake detection device 56. Therefore, the worker does not have to bother to perform maintenance and inspection on the hoistway 12. Further, since the inspection can be performed during the normal operation of the elevator 10, even if the range sensor 52 fails, the failure can be grasped as early as possible.

<Embodiment 2>
In the first embodiment, the car 26 is detected by the range sensor 52. On the other hand, in the second embodiment, not only the car 26 but also the counterweight 28 is detected by the range sensor 52. In the second embodiment, the configuration of the inspection system 200 and the program for executing the inspection process are changed with the increase in the types of the lifting/lowering bodies to be detected by the range sensor 52. However, basically, other than that, Is the same as in the first embodiment. Therefore, in the second embodiment, components substantially the same as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and the description thereof will be referred to only when necessary, and the different parts will be mainly described below. explain.

  As described above, when the first object is detected, the range sensor 52 detects the second object (or the part thereof) hidden behind the first object when viewed from the range sensor 52. Not done. Therefore, when neither the car 26 nor the counterweight 28 is in the scanning range of the range sensor 52, the figure in which the coordinates of the object detected by one scan of the range sensor 52 are plotted is the main side of the car. Similar to the state where the rope portion 24A and the counterweight side balance rope portion 32B are within the scanning range of the range sensor 52 (the state shown in FIG. 4), the state is as shown in FIG. 6A.

  On the other hand, when the counterweight 28 is present in the scanning range of the range sensor 52, the plotted coordinates of the side wall 54C slightly appearing on the back side of the counterweight guide rail 42 in FIG. It will be hidden behind the weight 28. As a result, as shown in FIG. 12, the coordinates of the side wall 54C are not plotted, but the coordinates corresponding to a part of the counterweight 28 are plotted. In the second embodiment, the coordinates of the counterweight 28 are used as reference data and index data.

  As is apparent from the mode shown in FIG. 8, the coordinate of the counterweight 28 is outside the range of the assumed coordinate region R1 in the first embodiment, and therefore the coordinate input from the unnecessary coordinate exclusion unit 504 to the amplitude indexing unit 508. Not included in. Therefore, in the inspection program 200, as shown in FIG. 12, in consideration of the ascending/descending path of the counterweight 28 in the hoistway 12, it is assumed that the counterweight 28 can be detected. The area surrounded by the alternate long and short dash line) is set. In this example, the assumed coordinate area R3 is defined by the coordinates (X8, Y8), (X9, Y9), (X10, Y10), (X11, Y11) of the four points P8 to P11. The set of the coordinates P8 to P11 is stored in the assumed coordinate area storage unit 210 (FIG. 13) of the inspection system 200 as “R3 demarcation information”.

  Here, the assumed coordinate area R3 of the range sensor 52 is an area in which the coordinates of both the car 26 and the counterweight 28 can exist, but when the coordinates of the counterweight 28 exist in the assumed coordinate area R3, The coordinates for the ropes M1 to M8 are also present. Therefore, when detecting the counterweight 28, the range in which the coordinates for the main ropes M1 to M8 may exist is excluded from the assumed coordinate area R3, and the assumed coordinate area R4 in which only the coordinates of the counterweight 28 can exist is set. I'll do it. In this example, the assumed coordinate area R4 is defined by the coordinates (X10, Y10), (X12, Y12), (X13, Y13), (X14, Y14) of the four points P10, P12 to P14 as shown in FIG. Defined. That is, the square area surrounded by the line segment connecting P10, P12, P13, and P14 in this order is the assumed coordinate area R4. The set of coordinates of P10, P12, P13, and P14 is stored in the assumed coordinate area storage unit 210 (Fig. 13) of the inspection system 200 as "R4 demarcation information".

  The reference data storage unit 102 (FIG. 13) stores the reference data of the car 26 corresponding to the assumed coordinate area R3 and the reference data of the counterweight 28 corresponding to the assumed coordinate area R4.

  As in the first embodiment, as the reference data of the car 26, as shown in FIG. 14A, the rotation angle E1 of the rotary encoder when the range sensor 52 detects the car 26 moving in the hoistway 12 is stored. Has been done. The coordinate data D1 (FIG. 14B) indicating the state in which the range sensor 52 detects the car 26 is stored as reference data in association with the rotation angle E1.

  Further, as for the reference data of the counterweight 28, as with the car 26, as shown in FIG. 15A, the range sensor 52 detects the counterweight 28 moving in the hoistway 12 of the rotary encoder. The rotation angle E2 is stored. Then, coordinate data D2 (FIG. 15B) indicating a state in which the range sensor 52 detects the counterweight 28 is stored as reference data in association with the rotation angle E2.

  Returning to FIG. 13, the inspection system 200 also includes an unnecessary coordinate eliminating unit 208. The same coordinates as the coordinates input from the coordinate conversion unit 502 of the rope shake amount detection unit 50 to the unnecessary coordinate removal unit 504, that is, the coordinates after conversion from polar coordinates to rectangular coordinates are input to the unnecessary coordinate exclusion unit 208. .. Then, the unnecessary coordinate exclusion unit 208 switches the demarcation information to be referred to from the R3 demarcation information and the R4 demarcation information, depending on whether the range sensor 52 detects the car 26 or the counterweight 28.

  That is, when the range sensor 52 detects the car 26, the unnecessary coordinate exclusion section 208 refers to the R3 demarcation information stored in the assumed coordinate area storage section 210 and refers to the coordinates of the object from the coordinate conversion section 502. Among them, only the coordinates belonging to the assumed coordinate area R3 are output to the index data acquisition unit 104 as coordinate data Da. On the other hand, when the range sensor 52 detects the counterweight 28, the unnecessary coordinate exclusion section 208 refers to the R4 demarcation information stored in the assumed coordinate area storage section 210 and refers to the object from the coordinate conversion section 502. Of the coordinates, only the coordinates that belong to the assumed coordinate area R4. The coordinate data Db is output to the index data acquisition unit 104.

  Next, an example of a program that executes the inspection process by the inspection system 200 will be described with reference to the flowchart shown in FIG. In this example, it is assumed that the coordinate data D1 and D2 have already been stored in the reference data storage unit 102 after the preliminary preparation stage.

  In the elevator 10 in operation, when the next destination floor of the car 26 stopped at a certain floor is determined (step S1), the CPU of the control circuit unit 46 causes the car 26 moving to the destination floor to detect the range sensor 52. It is determined whether or not the scanning range is passed (step S2). When the car 26 passes through the scanning range (step S2: Yes), the same processing (steps S3 to S6) as that of the first embodiment is executed. On the other hand, when the car 26 does not pass the scanning range (step S2: No), it is determined whether or not the counterweight 28 moving in the direction opposite to the car 26 passes the scanning range of the range sensor 52. (Step S7).

  When the counterweight 28 does not pass through the scanning range (step S7: No), it waits until the next destination floor is determined. On the other hand, when the counterweight 28 passes through the scanning range (step S7: Yes), the index data acquisition unit 104 acquires the coordinate data Db (step S8).

  When the coordinate data Db is acquired, the determination unit 106 compares the acquired coordinate data Db with the coordinate data D2 stored in the reference data storage unit 102 in advance (step S9). Then, if the coordinate data D2 and the coordinate data Db match (step S10: No), the above-described processing is continuously executed. On the other hand, when the coordinate data D1 and the coordinate data Da do not match (step S5: Yes), the determination unit 106 determines that the range sensor 52 is not operating normally and reports that the range sensor 52 has failed. A notification is given (step S6), and the inspection process ends.

  Depending on the combination of the current stop floor of the car 26 and the next destination floor, a case in which both the car 26 and the counterweight 28 pass through the scanning range of the range sensor 52 at different timings is also assumed. .. In such a case, the inspection process on the side of the car 26 (steps S2 to S5) and the inspection process on the side of the counterweight 28 (steps S7 to S10) are executed in order of passing through the scanning range of the range sensor 52. You can do this.

  Although the elevator according to the present invention has been described above based on the embodiment, it goes without saying that the present invention is not limited to the above-described mode, and may have the following modes, for example.

<Modification>
(1) In the first embodiment, the cage 26 is configured to be detected, and in the second embodiment, both the cage 26 and the counterweight 28 are configured to be detected by the range sensor 52. However, only the counterweight 28 is measured. The area sensor 52 may be used for detection. The lifting/lowering body to be detected by the range sensor 52 may be a lifting/lowering body other than the car and the counterweight, for example, the range sensor 52 may detect an accessory attached to the car or the counterweight. Good.

  (2) Although the elevator according to the above-described embodiment has a configuration in which only one range sensor 52 is installed in the center of the hoistway 12 in the vertical direction, the height of the hoistway 12 is different in the vertical direction. Of course, the inspection system may be applied to an elevator having a configuration in which a plurality of range sensors are installed at the position. In this case, the coordinate data (D1, D2) indicating the state in which the range sensor has detected the lifting body to be detected corresponds to the rotation angle of the rotary encoder that detects the lifting body to be detected by each range sensor. The attached reference data may be prepared, and the inspection process may be executed as in the above embodiment.

  (3) In the above embodiment, the position of the car 26 in the vertical direction of the hoistway 12 is grasped from the output value (rotation angle) from the rotary encoder. Not limited to this, for example, a method of laying a known magnetic scale in the hoistway and reading the scale value can be adopted. In this case, the scale value of the magnetic scale may be associated with the coordinate data instead of the rotation angle of the rotary encoder.

  (4) In the above-described embodiment, the range sensor 52 measures the direction and distance from the installation position of the objects (usually a plurality) in the hoistway 12 existing on the horizontal plane including the installation position, and the direction and distance. Was output as two-dimensional position information, the sensor to be inspected for failure is not limited to this, and other types of sensors may be used.

  For example, instead of the range sensor 52, which is a two-dimensional range sensor, a three-dimensional range sensor (three-dimensional scanner) may be the target of failure inspection. In this case, the coordinate data handled as the reference data and the index data becomes the three-dimensional position information, but if a method of converting the three-dimensional position information of the spherical coordinate system into the xyz orthogonal coordinates to handle is adopted, the same as in the above embodiment. It is possible to carry out the inspection process.

  Further, like the sensor employed in the rope shake detection device disclosed in Patent Document 1, a photoelectric sensor having a set of a light emitter and a light receiver may be the target of the failure inspection. In this case, if the ON/OFF signal output from the photoelectric sensor is treated as the reference data and the index data instead of the various coordinate data described above, the inspection process can be performed in the same manner as in the above embodiment. is there.

  The present invention can be carried out in a mode in which various improvements, modifications, or variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Further, within the range in which the same action or effect is produced, any of the matters specifying the invention may be replaced with another technique.

10 Elevator 102 Reference data storage unit (storage unit)
104 Index data acquisition unit (acquisition unit)
106 Judgment part 100 Inspection system

Claims (4)

Based on information output from a sensor installed outside the ascending/descending path of the ascending/descending body including a car and a counterweight that ascend/descend the hoistway in the opposite direction, the lateral deflection of the main rope that suspends the car and the counterweight is determined. An elevator equipped with a rope shake detection device for detecting,
A storage unit that stores reference data relating to behavior during normal operation to be detected by the sensor of the lifting body,
An acquisition unit that causes the sensor to detect the lifting body and acquires index data indicating an actual behavior corresponding to the reference data of the lifting body,
Comparing the acquired index data with the reference data, a determination unit that determines whether the sensor has performed the desired detection,
Including,
An elevator having an inspection system for inspecting whether or not the sensor is normally operating based on a determination result of the determination unit.   The elevator according to claim 1, wherein the reference data includes data regarding a timing at which the sensor should detect the elevator when the car moves from a stop floor to a destination floor.   The inspection system, according to the combination of the stop floor and the destination floor of the car, the behavior of the car side of the elevator body, the behavior of the counterweight side, or the behavior of both of them is detected by the sensor. The elevator according to claim 1 or 2, wherein: The sensor is a range sensor that measures a direction and a distance from an installation position of an object in the hoistway existing on a horizontal plane including the installation position, and outputs the direction and the distance as position information. The elevator according to any one of claims 1 to 3.