JP6203068B2 - Elevator car landing position deviation detection device and elevator car landing position deviation detection method - Google Patents

Description

  The present invention relates to an elevator car landing position deviation detecting device for detecting a position deviation generated between a floor of a floor and a floor of a car due to secular change, and an elevator car landing position deviation detecting method. It is.

  In general, the height of the floor of the landing floor and the floor of the car are equal when the landing plate attached to the car and the landing plate detector provided on the guide rail face each other. It has been adjusted. However, the floor position of the landing floor descends due to shrinkage downward in the height direction of the building accompanying the secular change after building construction. On the other hand, the guide rail is made of metal and hardly changes in the height direction of the hoistway even if it changes over time. Thereby, after a secular change, even if the landing plate and the landing plate detector face each other, a displacement occurs between the floor of the landing floor and the floor of the car.

  Therefore, in order to correct misalignment between the floor of the landing floor and the floor of the car due to shrinkage of the building due to secular change, each floor of the car is installed based on the amount of misalignment at the floor level. 2. Description of the Related Art Conventionally, a car landing position correction apparatus that can update a floor level position to be floored to a correction position is known (see, for example, Patent Document 1).

  The landing position correction apparatus disclosed in Patent Document 1 updates the contents of a landing floor information table that stores floor level positions at the landing floors and a measured value of the amount of displacement. Platform floor information table updating means. The measured value of the positional deviation amount is measured by maintenance personnel at the time of maintenance and inspection, and is input to the landing floor information table updating means. The landing floor information table update means updates the content of the landing floor information table based on the input measurement value of the positional deviation amount.

JP-A-8-324902

However, the prior art has the following problems.
In the car landing position correction apparatus disclosed in Patent Document 1, since the measurement of the positional deviation amount is performed at the time of the maintenance inspection, there is a problem that the positional deviation amount is not known until the maintenance inspection is performed. As a result, when there is a large amount of misalignment during maintenance inspection, it is necessary to examine the necessity of handling on the spot and adjust the misalignment as necessary, which causes a problem that it takes time for maintenance inspection. It was.

  Further, the amount of positional deviation between maintenance intervals is not corrected until the next maintenance inspection. For this reason, the amount of positional deviation increases during the maintenance interval, which may exceed the allowable range set in the design. If the amount of positional deviation exceeds the allowable range, there is a problem that the equipment arranged on the upper part of the elevator and the hoistway interfere with each other, which may affect the normal operation of the elevator.

  The present invention has been made to solve the above-described problems, and can detect whether or not the positional deviation needs to be adjusted even during the maintenance interval, and affects the normal operation of the elevator. It is an object of the present invention to provide an elevator car landing position deviation detection apparatus and an elevator car landing position deviation detection method capable of notifying an administrator of the amount of positional deviation before.

  The elevator car landing position shift detection device according to the present invention is a device on the landing floor side when the car is stopped on the landing floor as the building where the elevator is installed shrinks downward in the height direction of the hoistway due to secular change. An elevator car landing position shift detection device that detects a position shift that occurs between a floor level and a floor level on the car side, and is provided in the hoistway, and is subject to secular change in the height direction of the hoistway. Distance measurement that detects the relative distance between the first reference position, which is the reference position on the building side where the accompanying shrinkage occurs, and the second reference position, which is the reference position on the guide rail side, where no shrinkage due to secular change occurs. Based on the relative distance detected by the sensor and the distance measuring sensor, the fluctuation amount from the initial state is calculated as the relative positional deviation amount, and the calculated relative positional deviation amount is a first threshold value set in advance. When it is above, the misalignment judgment unit that outputs a warning that the maintenance staff needs to readjust the landing misalignment between the floor level on the landing floor side and the floor level on the car side Is provided.

  In addition, the elevator car landing position shift detection method according to the present invention is the landing floor when the car stops on the landing floor as the building where the elevator is installed shrinks downward in the height direction of the hoistway due to secular change. This is a method for detecting an elevator car landing position displacement that detects a displacement that occurs between the floor level on the side of the car and the floor level on the side of the car, and the shrinkage due to secular change occurs in the height direction of the hoistway. Provided in the hoistway to detect the relative distance between the first reference position, which is the reference position on the building side, and the second reference position, which is the reference position on the guide rail side where shrinkage due to secular change does not occur By reading the output value of the obtained distance measuring sensor, a step of calculating the amount of variation from the initial state as a relative positional deviation amount, and the calculated relative positional deviation amount is equal to or greater than a preset first threshold value If it becomes is provided with a step of outputting an alarm indicating that the landing position deviation between the floor level and the car side of the floor level of the landing floor side, it is necessary to maintenance personnel readjusted.

  According to this invention, the sensor capable of quantitatively measuring the amount of shrinkage of the building that causes the landing position shift is installed in the hoistway, and the relative position shift amount calculated from the measured value of the sensor is the first. When the threshold is exceeded, it is possible to notify the administrator that the landing position deviation needs to be adjusted. This makes it possible to detect whether or not the landing position deviation needs to be adjusted even during the maintenance interval, and to notify the manager of the amount of positional deviation before affecting the normal operation of the elevator. A car landing position deviation detection device and an elevator car landing position deviation detection method can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the whole elevator by Embodiment 1 of this invention. It is a comparison figure which shows the elevator at the time of construction, and the elevator after a secular change. It is an enlarged view which shows the relative position detection apparatus arrange | positioned at the hoistway upper part of FIG. FIG. 2 is a configuration diagram specifically showing an internal configuration of a landing position detector in the relative position detection device of FIG. 1. It is a flowchart which shows a series of operation | movement after a relative position detection apparatus measures a shrinkage | contraction amount, and alert | reports car landing position shift information to an administrator and a passenger. It is an enlarged view which shows the relative position detection apparatus arrange | positioned at the hoistway upper part in Embodiment 2 of this invention. It is an enlarged view which shows the relative position detection apparatus arrange | positioned in the hoistway lower part in Embodiment 3 of this invention. It is an enlarged view which shows the relative position detection apparatus arrange | positioned at the hoistway lower part in Embodiment 4 of this invention.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram showing an entire elevator according to Embodiment 1 of the present invention. In FIG. 1, a guide rail 2 is installed in the hoistway 1. The guide rail 2 is laid in the hoistway 1 from the lowermost floor to the uppermost floor, and is fixed by fixtures arranged at intervals in the height direction of the hoistway 1 (vertical direction in FIG. 1). It is fastened to the side wall of the hoistway 1.

  The guide rail 2 includes a car guide rail 2a and a weight guide rail 2b which are arranged apart from each other in the depth direction of the elevator (left and right direction in FIG. 1), a car guide rail 2a and a weight guide rail 2b. And a connecting rail 2c that connects the upper ends of the two.

  In the upper part of the hoistway 1, a hoisting machine 3 having a sheave and a deflector 4 are provided. The hoisting machine 3 and the deflecting wheel 4 are mounted and fixed on the connecting rail 2c. That is, the lower part of the hoisting machine 3 and the deflecting wheel 4 is supported by the connecting rail 2c. A common main rope (for example, a wire, a rope, or a belt) 5 is wound around the hoisting machine 3 and the deflecting wheel 4. A car 6 and a counterweight 7 are suspended in the hoistway 1 by a main rope 5.

  The car 6 and the counterweight 7 are moved up and down in the hoistway 1 along the corresponding car guide rail 2 a and weight guide rail 2 b by the driving force of the hoisting machine 3. The car 6 and the counterweight 7 are raised and lowered in opposite directions. The operation of the hoisting machine 3 is controlled by a control device 10 (not shown in FIG. 1) provided in the hoistway 1. Therefore, a machine room-less elevator is used for the elevator according to the first embodiment.

  In order for the floor surface of the car 6 (floor level on the car side) to stop without a step difference (with no deviation in the landing position) with respect to the floor surface of the landing 8 (floor level on the landing floor side) of each floor, the control device 10 Is connected to a position detecting device 9. The position detection device 9 includes a plurality of detection plates 9 a provided on the car guide rail 2 a and a detection plate detector 9 b provided on the car 6.

  Each of the detection plates 9a is aligned with a position corresponding to the floor surface of the landing 8 on each floor of the car guide rail 2a, and is provided so as to protrude from the car guide rail 2a toward the landing 8. Accordingly, the detection plates 9a are provided at a distance from each other in the height direction of the elevator. In other words, each detection plate 9a is attached to a car guide rail 2a that is a metal material that is not affected by aging.

  In general, an optical sensor or an electromagnetic sensor is used for the detection plate detector 9b. The detection plate detector 9b is attached to a position where the detection plate 9a can be detected at the lower part of the car 6. Accordingly, in the initial setting state, when the detection plate detector 9b detects the detection plate 9a, the floor surface of the landing 8 corresponding to the detection plate 9a and the floor surface of the car 6 are equal in height (no step). ) Position.

  As a result, when the detection plate detector 9b detects the detection plate 9a, the control device 10 has no step between the floor surface of the car 6 and the floor surface of the landing 8 corresponding to the detected detection plate 9a. It is determined that 6 has landed at landing 8.

  The position of each detection plate 9a with respect to the floor surface of the landing 8 of each floor is adjusted when the elevator is installed. However, it is known that buildings shrink (sink) in the vertical direction after construction. In recent years, the influence of shrinkage after construction accompanying the increase in the height of buildings has been increasing. The main factor that shrinks buildings is thought to occur because the concrete used in the building receives a compressive load due to the weight of the building.

  For example, if the total height of the building is reduced by 0.1% after the elevator is installed, if the total height of the building is 200 m, the contraction amount (reduction amount) is 20 cm, and if the total height of the building is 600 m, the contraction amount is 60cm. If the reduction rate of the building is 0.1% or more, the amount of shrinkage is further increased. As a result, the overall height of the hoistway 1 is also reduced.

  FIG. 2 is a comparative view showing an elevator during construction and an elevator after aging. Fig.2 (a) is sectional drawing which shows the building at the time of elevator construction. Moreover, FIG.2 (b) is sectional drawing which shows the building after a secular change.

  As shown in FIG. 2, the position of the landing 8 on each floor after aging changes as a whole as the building shrinks. On the other hand, the guide rail 2 is made of metal (made of iron) and hardly changes in the vertical direction even after aging.

  Thereby, the position of each detection board 9a with respect to the floor surface of the hall 8 of each floor which was in agreement at the time of construction will shift. Further, along with this, the relative positions of the detection plate 9a and the detection plate detector 9b of the position detection device 9 for preventing the landing position shift to the landing 8 (to ensure the landing accuracy) are shifted. Become.

  If it is assumed that the reduction rate is uniform over the entire height of the building, as shown in FIG. 2B, the detection plate 9a corresponding to the floor surface of the lowermost hall 8 and the lowermost hall 8 is provided. As the floor rises, the relative displacement amount increases with respect to the relative displacement amount (displacement amount).

  In addition, in the upper part of the hoistway 1 after aging, from the equipment (the hoisting machine 3 and the deflector 4 in the first embodiment) installed on the upper part of the hoistway 1 to the ceiling part of the hoistway 1. The distance is smaller than at the time of construction.

  Normally, the landing position deviation is verified by maintenance personnel at regular maintenance inspections, and the position of the detection plate 9a on each floor is readjusted as necessary. Therefore, the amount of shrinkage increases during the maintenance interval, and it may be considered that the set shrinkage amount exceeds the allowable range. In addition, there is a possibility that equipment installed on the upper part of the hoistway 1 during the maintenance interval may interfere with the ceiling of the hoistway 1.

  Therefore, in the present invention, a relative position detection device (car landing position displacement detection device) 20 capable of constantly monitoring the amount of relative displacement due to secular change is provided in the hoistway 1. In the first embodiment, the relative position detection device 20 is installed on the connecting rail 2 c above the hoistway 1.

  FIG. 3 is an enlarged view showing the relative position detection device 20 arranged in the upper part of the hoistway of FIG. As shown in FIG. 3, the relative position detection device 20 has a reference part in the hoistway 1 in the height direction of the hoistway 1 (that is, a reference part of the building itself in which secular change occurs, a first reference part). ) And a reference portion of the guide rail 2 (that is, a reference portion that hardly changes in the vertical direction even after aging, a second reference portion) And a landing position detector 22 capable of detecting (estimating) the amount of relative positional deviation of each floor based on the relative distance measured by the distance measuring sensor 21.

  In the first embodiment, a case where the reference portion in the hoistway 1 is the ceiling (upper surface) of the hoistway 1 and the reference portion of the guide rail 2 is the upper surface of the connecting rail 2c will be described as an example.

  An optical sensor is used as the distance measuring sensor 21. The distance measuring sensor 21 measures the distance until the light emitted from its upper part reaches the ceiling of the hoistway 1 which is a reference part in the hoistway 1, so that the distance from the upper surface of the connecting rail 2 c to the hoistway 1. Measure the relative distance to the ceiling. On the other hand, the landing position detector 22 can read the measurement result of the relative distance by the distance measuring sensor 21 for each set period (in time series).

  FIG. 4 is a configuration diagram specifically showing the internal configuration of the landing position detector 22 in the relative position detection device 20 of FIG. As shown in FIG. 3, the landing position detector 22 according to the first embodiment includes a calculating unit 22a, an accumulating unit 22b, and a positional deviation determining unit 22c.

  In the storage unit 22b, the relative distance detected by the distance measuring sensor 21 during installation from the upper surface of the connecting rail 2c during elevator installation to the ceiling of the hoistway 1 is stored as an initial relative distance. Further, the storage unit 22b stores a height ratio corresponding to the height of each floor from the pit surface 1a (see FIG. 1) of the hoistway 1 when the elevator is installed, and a building reduction rate. Here, in order to facilitate the explanation, it is assumed that the rate of reduction of the building is uniform over the entire height of the building.

  The calculation unit 22a reads the relative distance detected by the distance measurement sensor 21 for each set period, and calculates the fluctuation amount with respect to the initial relative distance stored in the storage unit 22b as the relative positional deviation amount. Further, the calculation unit 22a calculates the amount of positional deviation of each floor from the height ratio and the building reduction rate stored in the storage unit 22b and the calculated relative positional deviation amount. Then, the calculation unit 22a transmits the calculated relative positional deviation amount data at each floor to the accumulation unit 22b and the positional deviation determination unit 22c.

  The accumulation unit 22b updates the data by storing the latest relative positional deviation amount data sent from the calculation unit 22a at each floor. The accumulating unit 22b stores the received relative positional deviation amount data at each floor until receiving the relative positional deviation amount data at the next floor from the calculation unit 22a. The accumulating unit 22b can extract the relative displacement data as necessary. For example, during maintenance inspection, maintenance personnel can acquire relative positional deviation amount data and readjust the landing positional deviation.

  The positional deviation determination unit 22c includes a comparison unit 220c, an operation command determination unit 221c, and a notification determination unit 222c. The operation command determination unit 221c and the notification determination unit 222c are connected to the elevator control device 10.

  In the comparison unit 220c, an allowable value of the relative positional deviation amount at each floor preset at the time of design is stored as a threshold value. The threshold value includes a first threshold value for notifying the manager that the landing position deviation between the floor surface of the hall 8 and the floor surface of the car 6 needs to be adjusted, and a second threshold value for stopping the operation of the elevator. Two threshold values are set.

  The operation command determination unit 221c determines the control content of the elevator based on the comparison result between the relative displacement data and the threshold value by the comparison unit 220c. The control content of the elevator is to perform a correction operation (with correction operation) to adjust the landing position deviation (error of landing position) between the car 6 and the landing 8 or stop the operation of the elevator (without correction operation). )

  The notification determining unit 222c determines whether to send the manager notification information and the passenger notification information to the control device 10 based on the comparison result between the relative positional deviation amount data and the threshold value by the comparison unit 220c. The notification information for manager notifies the readjustment information indicating that the landing position deviation between the car 6 and the landing 8 needs to be readjusted by the maintenance staff, and that the operation of the elevator is stopped. There is manager shutdown information. In the passenger notification information, there is landing position shift information for notifying that a landing position shift has occurred between the arriving car 6 and the landing 8, and for passengers notifying that the operation of the elevator is stopped. There is shutdown information.

  Hereinafter, the operation of the positional deviation determination unit 22c will be described using Table 1 above. The data in Table 1 can be individually stored on each floor. However, if the rate of decrease in buildings is assumed to be uniform over the entire height of the building, a representative floor or a distance measurement sensor 21 is installed. It can also be stored as data for the first floor corresponding to the threshold at the place.

  First, A in Table 1 is a case where the relative positional deviation amount is a value equal to or smaller than the first threshold (relative positional deviation amount <first threshold), and corresponds to a state where the relative positional deviation amount is small. At this time, the comparison unit 220c uses the operation command determination unit 221c and the notification determination unit 222c to obtain information (relative to the first threshold value) that the relative positional deviation amount data at each floor received from the storage unit 22b is equal to or less than the first threshold value. Send to.

  When the operation command determination unit 221c receives the relative positional deviation amount data and the first threshold value information or less at each floor, the operation command determination unit 221c detects the landing positional deviation detected by the position detection device 9 based on the relative positional deviation amount data at each floor. The corrected operation information to be adjusted is determined and transmitted to the control device 10.

  The control device 10 controls the operation of the car 6 based on the corrected operation information. Here, the corrected operation information includes, for example, information for controllably lowering the stop position of the car 6 by the amount of relative positional deviation after the detection plate detector 9b detects the detection plate 9a.

  Upon receiving the information below the first threshold, the notification determining unit 222c determines that there is no need to make an announcement to the passengers and the manager because the deviation amount is equal to or less than the allowable value (first threshold). At this time, the notification information for manager and the notification information for passengers are not sent from the notification determination unit 222c to the control device 10.

  Next, the case of B in Table 1 will be described. B in Table 1 is a case where the relative positional deviation amount is a value not less than the first threshold and less than the second threshold (first threshold ≦ relative positional deviation amount <second threshold), and the relative positional deviation amount is large. However, this corresponds to a state where there is no concern of mechanical interference. When the relative positional deviation amount data calculated for each set period exceeds the first threshold value, the comparison unit 220c exceeds the first threshold value when the relative positional deviation amount data exceeds the first threshold value. Information (first threshold value excess information) is transmitted to the operation command determination unit 221c and the notification determination unit 222c.

  When the operation command determination unit 221c receives the relative positional deviation amount data and the first threshold excess information at each floor, the operation command determination unit 221c detects the landing positional deviation detected by the position detection device 9 based on the relative positional deviation amount data at each floor. The corrected operation information to be adjusted is determined and transmitted to the control device 10. Also in this case, by transmitting the corrected operation information from the misalignment determining unit 22c to the control device 10, the car stop position can be lowered by an amount corresponding to the relative misalignment amount as in the case of A. It becomes possible.

  In addition, when receiving the first threshold value excess information, the notification determination unit 222c selects the landing position deviation information from the passenger notification information and the readjustment information from the administrator notification information, and transmits the information to the control device 10.

  The control device 10 determines the landing position between the floor surface of the car 6 and the floor surface of the landing 8 based on the information indicating that there is a landing position shift sent from the notification determining unit 222c via a not-shown alarm. Announce information about the gap. Moreover, the control apparatus 10 announces that it is necessary to perform readjustment by the maintenance personnel to the manager based on readjustment information sent from the notification determining unit 222c via the alarm. The announcement method is performed using a sound device and a display device which are alarm devices.

  Next, the case of C in Table 1 will be described. After the readjustment information is sent to the administrator and before the maintenance staff readjusts, the relative displacement amount becomes a value greater than or equal to the second threshold (second threshold ≦ relative displacement amount). If this state further deteriorates, it corresponds to a state in which mechanical interference occurs.

  When the relative positional deviation amount data on each floor exceeds the second threshold value after the first threshold value is exceeded, the comparison unit 220c provides information on the relative positional deviation amount data on each floor exceeding the second threshold value. (Second threshold excess information) is transmitted to the operation command determination unit 221c and the notification determination unit 222c.

  When the operation command determination unit 221 c receives the second threshold value excess information, the operation command determination unit 221 c determines the operation stop of the elevator and transmits the operation stop information to the control device 10. Receiving the operation stop information, the control device 10 stops the operation of the elevator.

  At this time, the notification determination unit 222c selects passenger operation stop information from the passenger notification information, and selects manager operation stop information from the manager notification information, and transmits the selected information to the control device 10. Therefore, there is an announcement.

  The control device 10 announces information for stopping the operation of the elevator to the passenger based on the passenger operation stop information sent from the notification determining unit 222c via the notification device. Moreover, the control apparatus 10 announces the information which the driving | operation of the elevator stopped with respect to the manager based on the driving | operation stop information for managers sent from the notification determination part 222c via a warning device. The announcement method is performed using a sound device and a display device which are alarm devices.

  Next, a series of operations of the relative position detection device 20 will be described using the flowchart of FIG. FIG. 5 is a flowchart showing a series of operations from when the relative position detection device 20 measures the amount of contraction until the manager and passengers are notified of the landing position deviation.

  As illustrated in FIG. 5, first, the calculation unit 22a acquires the relative distance measured by the distance measurement sensor 21 for each set period (step S101). Next, based on the acquired relative distance, the calculation unit 22a calculates relative positional deviation amount data at each floor and sends the data to the accumulation unit 22b and the positional deviation determination unit 22c (step S102).

  The accumulating unit 22b stores relative positional deviation amount data at each floor. The comparison unit 220c of the misregistration determination unit 22c has a relative misregistration amount data corresponding to A, B, and C in Table 1 above, the first threshold value or less, the first threshold value or more and the second threshold value or less, or the first It is determined which one corresponds to the threshold value of 2 or more (step S103). In FIG. 5, the announcement is not made below the first threshold value corresponding to A in Table 1 above because no announcement is made.

  If it is determined in step S103 that the relative positional deviation amount data is greater than or equal to the first threshold value and less than the second threshold value, the comparison unit 220c sends the first threshold value excess information to the driving command determination unit 221c and the notification determination unit 222c. Transmit (step S104).

  The notification determination unit 222c selects corresponding landing position deviation information and readjustment information from the administrator notification information and passenger notification information stored in advance, and sends the notification information to the control device 10 (step S105). . After that, the control device 10 makes an announcement that the landing position shift has occurred between the floor surface of the car 6 and the floor surface of the landing 8 to the passenger via the alarm device, and also to the manager via the alarm device. Then, it is announced that it is necessary to readjust the landing position deviation by the maintenance staff (step S106). Then, it returns to step S101.

  After returning to step S101, if it is determined in step S103 that the relative positional deviation amount data is equal to or greater than the second threshold value, the comparison unit 220c displays the second threshold value excess information as the driving command determination unit 221c and the notification determination unit. It transmits to 222c (step S107).

  When receiving the second threshold value excess information, the operation command determination unit 221 c determines to stop the operation of the elevator and transmits the operation stop information to the control device 10. The control device 10 stops the operation of the elevator based on the operation stop information.

  The notification determination unit 222c selects corresponding passenger operation stop information and administrator operation stop information from the administrator notification information and passenger notification information stored in advance, and sends the notification information to the control device 10 (step S1). S108). Thereafter, the control device 10 announces to the passengers and the manager that the operation of the elevator has stopped via the alarm (step S109). Thus, the series of processes of the car landing position deviation notification method by the relative position detection device 20 is completed.

  Such a relative position detecting device includes a distance measuring sensor capable of measuring a relative distance between the reference portion in the hoistway and the reference portion of the guide rail, and a relative distance for each period set by the distance measuring sensor. A calculation unit that acquires and calculates the amount of positional deviation. With such a configuration, it is possible to automatically acquire relative positional deviation amount data even during the maintenance interval. As a result, the manager can examine whether or not the positional deviation needs to be adjusted before the maintenance inspection. As a result, the time required for maintenance and inspection work can be shortened, and the maintenance staff can save time and effort for measuring the relative displacement.

  In addition, the relative position detection device includes a notification determination unit that determines whether or not the administrator needs to readjust the landing position deviation based on the relative position deviation amount data based on whether or not the threshold value is exceeded. . By providing such a configuration, even during the maintenance interval, it is possible to notify the manager of the amount of positional deviation before affecting the normal operation of the elevator. Thereby, it can prevent that the equipment of a hoistway upper part and the ceiling of a hoistway contact between maintenance intervals. Moreover, since it can prevent that the apparatus of a hoistway upper part and the ceiling of a hoistway contact, it can prevent affecting the driving | operation of an elevator.

  Furthermore, the relative position detection device has an operation command determination unit that determines corrected operation information that adjusts the landing position deviation between the car floor and the landing floor based on the relative position deviation amount data. By having such a configuration, it is possible to prevent passengers from stepping on the steps.

  In addition, a first threshold value and a second threshold value are set as the threshold value, and the notification determination unit and the operation command determination unit indicate whether the relative positional deviation amount data is the first threshold value or the second threshold value. The notification information and the operation command information are changed depending on whether the threshold is exceeded. When the relative positional deviation amount data exceeds the second threshold, the operation command determination unit determines to stop the operation of the elevator. By providing such a configuration, it is possible to reliably prevent the equipment on the upper part of the hoistway from contacting the ceiling of the hoistway.

  Further, the relative position detection device has an accumulation unit that accumulates relative position deviation amount data. By providing such a configuration, the maintenance staff can acquire the latest relative positional deviation amount data during maintenance inspection. As a result, it is possible to reduce the trouble for the maintenance staff to measure the relative positional deviation amount during the maintenance inspection.

  The misalignment determination unit assumes that the reduction rate in the height direction due to the shrinkage of the building is uniform over the entire height of the building, so that the landing position on each floor is based on the relative misalignment amount. The deviation amount can be calculated, and the calculated landing position deviation amount in each floor can be transmitted to the elevator control device. As a result, the elevator control device that controls the operation of the car realizes stop control that stops the car at a position where the landing position deviation amount is corrected based on the received landing position deviation amount in each floor. Can do. However, such correction control is based on the assumption that the reduction rate is uniform, and it is appropriate to perform readjustment by maintenance personnel during maintenance inspection.

  The present invention is not different depending on the roping method of the car 6 and the detection method of the position detection device 9, and may be different depending on the design.

  In the first embodiment, a machine room-less elevator (MRL: Machine Room. Less elevator) has been described, but the same effect can be obtained for an elevator with a machine room.

Embodiment 2. FIG.
In the first embodiment, an example in which the distance measurement sensor 21 is an optical sensor has been described. In the second embodiment, an example in which a pressure displacement meter is used as the distance measurement sensor 21 will be described.

  FIG. 6 is an enlarged view showing the relative position detection device 20 arranged in the upper part of the hoistway 1 in Embodiment 2 of the present invention. As shown in FIG. 6, the distance measuring sensor 21 which is a displacement type displacement meter has a measurement sensor main body 21a and a pressure contact portion 21b protruding from the measurement sensor main body 21a.

  The longitudinal direction of the measurement sensor main body 21 a is arranged along the height direction of the hoistway 1. The measurement sensor main body 21 a is used such that the position of the upper end of the measurement sensor main body 21 a is higher than the upper end of the equipment above the hoistway 1 in the height direction of the hoistway 1.

  The pressure contact portion 21b protrudes upward in the height direction of the hoistway 1 from the measurement sensor main body 21a. Further, the pressure contact portion 21b can be displaced downward in the hoistway 1 when an external force is applied to the upper end portion. When the elevator is installed, the pressure contact portion 21 b protrudes from the measurement sensor main body 21 a in a fully extended state, and the upper end portion of the pressure contact portion 21 b is in contact with the ceiling of the hoistway 1. At this time, the upper end part of the press-contact part 21b is not receiving external force. The first threshold value and the second threshold value are set to different values depending on the displacement amount of the press contact portion 21b. Other configurations are the same as those of the first embodiment.

  Thus, even when a pressure displacement displacement meter is used as the distance measuring sensor, it is possible to detect whether or not the landing position deviation needs to be adjusted before the maintenance inspection as in the first embodiment, and the maintenance interval can be detected. Even during the period, it is possible to obtain an effect that it is possible to notify the manager of the amount of positional deviation before affecting the normal operation of the elevator.

Embodiment 3 FIG.
In the first embodiment, the example in which the relative position detection device 20 is installed on the connecting rail 2c on the upper side of the hoistway 1 has been described. However, in the present third embodiment, the relative position detection device 20 is placed in the pit of the hoistway 1. An example of installing on a surface will be described.

  FIG. 7 is an enlarged view showing the relative position detection device 20 arranged at the lower part of the hoistway 1 in the third embodiment of the present invention. As shown in FIG. 7, the relative position detection device 20 is installed on the pit surface 1 a of the hoistway 1. In this Embodiment 3, the reference | standard part in the hoistway 1 is the pit surface 1a (bottom surface) of the hoistway 1, and the reference | standard part of the guide rail 2 is the lowest floor provided in the guide rail 2a for cars. This is the bottom surface of the detection plate 9a.

  Thus, the relative distance measured by the distance measuring sensor 21 is a distance from the pit surface 1a of the hoistway 1 to the bottom surface of the lowermost detection plate 9a. At this time, the installation relative distance stored in the calculation unit 22a is a distance from the pit surface 1a of the hoistway 1 at the time of elevator installation to the bottom surface of the lowermost detection plate 9a. Other configurations are the same as those of the first embodiment.

  Even in such a configuration, it is possible to detect whether or not it is necessary to adjust the displacement of the landing position before the maintenance inspection similar to the first embodiment, which is the same as the first embodiment. However, it is possible to obtain an effect that it is possible to notify the manager of the amount of displacement before affecting the normal operation of the elevator.

  Note that the configuration of the first embodiment or the second embodiment may be used for the configuration of the third embodiment.

  In the third embodiment, the reference portion of the guide rail 2 is the bottom surface of the lowermost detection plate 9a. However, the present invention is not limited to this, and may be the desired bottom surface of the detection plate 9a.

Embodiment 4 FIG.
In the third embodiment, an example in which the distance measurement sensor 21 is an optical sensor has been described. In the fourth embodiment, an example in which a pressure displacement displacement meter is used as the distance measurement sensor 21 will be described.

  FIG. 8 is an enlarged view showing the relative position detection device 20 arranged at the lower part of the hoistway 1 in the fourth embodiment of the present invention. As shown in FIG. 8, the configuration is the same as that of the third embodiment except that the distance measuring sensor 21 is a pressure displacement displacement meter. The distance measuring sensor 21 has the same configuration as that of the second embodiment.

  Even in such a configuration, it is possible to detect whether or not it is necessary to adjust the displacement of the landing position before the maintenance inspection similar to the first embodiment, which is the same as the first embodiment. However, it is possible to obtain an effect that it is possible to notify the manager of the amount of displacement before affecting the normal operation of the elevator.

  Note that the configuration of the first embodiment or the second embodiment may be used for the configuration of the fourth embodiment.

  In each of the above embodiments, an optical sensor or a pressure displacement displacement meter is used as the distance measuring sensor 21, but the measuring instrument is not limited to this as long as it is a distance measuring instrument.

  Moreover, in each said embodiment, although the 2nd threshold value was set, only a 1st threshold value may be sufficient.

  Furthermore, in each said embodiment, although the landing position detector 22 is provided separately from the control apparatus 10, the landing position detector 22 may be added to the control apparatus 10. FIG.

  Moreover, in each said embodiment, when it is below a 1st threshold value, it is not announced that the landing position shift has generate | occur | produced on the floor surface of the cage | basket | car 6 and the floor surface of the landing 8 to a passenger and a manager. However, the structure which announces only to a passenger may be sufficient.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 2 Guide rail, 9a Detection board, 9b Detection board detector, 10 Control apparatus, 20 Relative position detection apparatus (car landing position deviation detection apparatus), 21 Distance measurement sensor, 22 Landing position detector, 22a Calculation part, 22b Accumulation part, 22c Position shift determination part.

Claims (6)

Occurred between the floor level on the landing floor side and the floor level on the car side when the car stops on the landing floor as the building where the elevator is installed shrinks downward in the height direction of the hoistway due to secular change An elevator car landing position shift detection device for detecting a position shift,
The first reference position, which is a reference position on the building side where shrinkage due to secular change occurs in the height direction of the hoistway, and the guide rail side where shrinkage due to secular change does not occur A distance measurement sensor that detects a relative distance from a second reference position that is a reference position of the sensor, and a variation amount from an initial state is calculated as a relative positional deviation amount based on the relative distance detected by the distance measurement sensor If the calculated relative positional deviation amount is equal to or larger than a preset first threshold value, the landing positional deviation between the floor level on the landing floor side and the floor level on the car side is calculated. An elevator car landing position shift detection device comprising a position shift determination unit that outputs an alarm notifying that maintenance personnel need to readjust. The displacement determination unit assumes that the rate of decrease in the height direction due to the shrinkage of the building is uniform over the entire height of the building, and based on the calculated relative displacement amount, the landing position on each floor In order to realize the stop control in which the elevator control device that calculates the deviation amount and performs the operation control of the car compensates for the landing position deviation amount, the landing position on each floor with respect to the elevator control device. The elevator car landing position deviation detection device according to claim 1, wherein the deviation amount is output. When the relative displacement detected by the distance measurement sensor is greater than or equal to a second threshold preset as a value larger than the first threshold, the displacement determination unit The elevator car landing position deviation detection device according to claim 1 or 2, wherein a command for stopping the operation of the elevator is output to the elevator control device that performs the operation control of the elevator. The distance measuring sensor is provided above the guide rail in the hoistway that is the second reference position, and the distance to the ceiling of the hoistway that is the first reference position is the relative distance. The elevator car landing position deviation detection device according to any one of claims 1 to 3. The distance measuring sensor is provided on a pit surface of the hoistway which is the first reference position, and is provided on the guide rail which is the second reference position and is used for detecting a landing position of the car. The elevator car landing position deviation detection device according to any one of claims 1 to 3, wherein the distance is detected as the relative distance. Occurred between the floor level on the landing floor side and the floor level on the car side when the car stops on the landing floor as the building where the elevator is installed shrinks downward in the height direction of the hoistway due to secular change An elevator car landing position deviation detection method for detecting position deviation,
About the height direction of the hoistway, the first reference position which is a reference position on the building side where shrinkage due to secular change occurs and the second reference position on the guide rail side where shrinkage due to secular change does not occur Calculating the amount of variation from the initial state as the amount of relative positional deviation by reading the output value of the distance measuring sensor provided in the hoistway in time series in order to detect the relative distance from the reference position. ,
When the calculated relative positional deviation amount is equal to or greater than a preset first threshold, the landing positional deviation between the floor level on the landing floor side and the floor level on the car side is An elevator car landing position deviation detection method comprising: a step of outputting an alarm notifying that maintenance personnel need to readjust.

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