JP5526092B2 - Electronic elevator - Google Patents

Description

  The present invention relates to an electronic elevator in which a safety device installed in a hoistway or the like is further enhanced as an electronic safety switch, and in particular, the serviceability of an elevator while improving the safety of maintenance workers during inspection. It is suitable for an electronic elevator that does not impair.

  Conventional elevators consist of a mechanical safety switch and a relay circuit as a safety system. The output of the safety switch is received by a relay circuit (safety circuit), and the relay circuit is cut off to shut off the power supply and operate the brake. Running. Mechanical safety switches include switches that detect the opening and closing of the car doors, switches that detect the opening and closing of the landing doors, limit switches that detect overshooting of the car, top clearance clearance switches for securing maintenance space, and pits. There is a pit switch that confirms that maintenance personnel have entered, and an inspection port switch that confirms the opening and closing of the doorway for inspection.

  The safety of the elevator is ensured by regularly inspecting the safety switch and relay circuit by maintenance personnel. In order to ensure the safety of maintenance workers, the regular inspection is generally performed after the elevator is stopped.

  In addition, in order to safely protect maintenance personnel working in the hoistway, the presence of maintenance personnel is detected at a predetermined place in the hoistway, and if detected, a predetermined floor related to the place where the detected person is located. In order not to move the basket, it is known that a response to a predetermined call is prohibited, and is described in, for example, Patent Document 1.

  In addition, if there is a person in or going into the danger zone (shaft base, shaft head) of the hoistway, the moving path of the elevator car is shortened to define the speed target curve and protect the shaft base and shaft head It is known to form a zone, and is described in, for example, Patent Document 2.

JP 2006-44444 A Japanese translation of PCT publication No. 2004-534707 (FIGS. 5 and 6)

  In the above prior art, since the elevator service is stopped at the time of maintenance work, the transport efficiency becomes 0 and the service is lowered.

  Moreover, in the thing of patent document 1, since the response with respect to a predetermined | prescribed call is prohibited, it does not change that serviceability is impaired, especially the process of an elevator like a high-rise building is long, and the time of maintenance work is long. In the case of conversion, the operation efficiency of the elevator is significantly reduced.

  Furthermore, in the thing of patent document 2, since the moving path | route of an elevator car is only shortened with respect to a shaft base part and a shaft head, it is good to maintain at the upper end or lower end of a shaft, If the maintenance is not performed on the middle floor of a high-rise building, the operation efficiency of the elevator will be significantly reduced.

  Furthermore, in an elevator with a long hoistway length, such as a high-rise building, if it is estimated that the number of users will increase or increase only between specific floors, it will be more efficient if services are provided only in areas with many users. Although it is possible to operate the elevator, it is difficult to ensure safety in a region where the elevator is not operated.

  The object of the present invention is to solve the above-mentioned problems of the prior art, and to operate a more efficient and safe elevator even in a high-rise building with a long elevator stroke, especially at the time of inspection by a maintenance worker. It is to ensure the performance and not to lower the elevator service even at that time.

In order to solve the above problems, the present invention provides an electronic computer equipped with a safety controller that services a plurality of floors by a passenger car and commands power-off or brake operation by input of a safety switch installed in a hoistway. The elevator comprises a position / speed detector for detecting the position and speed of the car, and a floor-to-floor distance database in which the distance between the floors is stored, and is a continuous floor except for a specific floor that is an intermediate floor. The speed monitoring curve is set so that there are a plurality of degenerated operation areas in which the floor can be serviced, and the speed limit for the position of the car is determined based on the inter-floor distance database for the degenerated operation area (If the car exceeds the speed limit, power is cut off or the brake is operated by the safety controller. ) It is intended.

According to the present invention, since there are a plurality of degenerate operation areas in which continuous floors can be serviced except for a specific floor that is an intermediate floor, in an elevator with a long hoistway length, only between specific floors When it is estimated that the number of users will increase or increase, efficient operation is possible and safety can be ensured by servicing only an area where there are many users.

1 is an overall configuration diagram showing an embodiment according to the present invention. The block diagram which shows the process by one Embodiment. The graph which shows the speed monitoring curve (specific floor: 1st floor) by one Embodiment. The graph which shows the speed monitoring curve (specific floor: 6th floor) by one Embodiment. The block diagram which shows the process by other embodiment. The whole block diagram which shows other embodiment. The figure which shows the distance database between floors by one embodiment. The graph which shows the relationship between the speed monitoring curve and work area | region by one Embodiment. The graph which shows the relationship between the speed monitoring curve and work area | region by one Embodiment.

Hereinafter, an embodiment will be described in detail with reference to the drawings.
FIG. 1 is an overall configuration diagram showing an elevator system, and the movement of an elevator car 105 is controlled by an elevator controller 100. The car 105 is moved between a plurality of floors in a hoistway formed in the building and is serviced, and is connected to a weight for balancing with the car 105 called a counterweight via a rope. Yes.

  The car 105 is provided with a car-side door that opens and closes by engaging the landing-side door. The car 105 is moved when the sheave 104 is driven by the electric motor 103. The electric power is supplied to the electric motor 103 by the electric power converter 101. The power converter 101 outputs electric power for controlling the electric motor according to the car position control command of the elevator controller 100. A pulse generator such as an encoder is attached to the electric motor 103, and the elevator controller 100 counts pulses generated by the rotation of the electric motor 103, so that the speed of the electric motor 103, the hoistway moving direction, position, and moving distance of the car 105. And so on.

  When braking the car 105, the elevator controller 100 outputs a stop command to the brake power source 2 and the power source 3. In response to the stop command, the brake power source 2 activates the brake 102, and the motive power source 3 shuts off the power supply to the power converter 101 to brake the car 105. The brake power source 2 and the motive power source 3 are circuits composed of electromagnetic contactors called contactors.

  The safety controller 1 is a controller that constitutes a safety system. The safety controller 1 is a safety device switch that has a top clearance securing switch 8 for securing a maintenance space, and a final limit switch 9 that detects overtravel of the car. The car 105 is braked by cutting off the brake power source 2 and the power source 3 independently. The safety controller 1 is a microprocessor assembly centering on a CPU (Central Processing Unit) that executes processing, and further includes a watchdog timer for detecting an abnormality of the CPU and a circuit for monitoring a power supply abnormality. Further, in order to detect abnormal processing of the CPU, mutual comparison is performed by duplicating the CPU.

  The safety controller 1 receives a degenerate operation permission means 4, a degenerate operation area setting means 5, an operation mode setting means 6, a car position / speed detection device 7, and the like.

  The operation mode setting means 6 sets operation modes such as normal operation, maintenance operation, rescue operation, and test operation.

  The position / velocity detection device 7 is a pulse generator that outputs a pulse in accordance with the height position of the car 105, and illustrates an apparatus in which an encoder is attached to a governor pulley that is linked to the car 105. In addition, a type that can detect the absolute or relative position of the car is desirable, such as a type that detects the movement of the car by pressing the roller directly against the guide rail, or a type that magnetizes the rail and detects the car.

  Further, the safety controller 1 outputs a brake power cutoff output, a power source cutoff output, a degenerate operation permission output, a degenerate operation area output, and other emergency stops provided in the car.

  FIG. 2 mainly shows a block diagram of the safety controller 1. The degenerate operation detection process 20 detects that the degenerate operation permission means 4 input to the safety controller 1 has been activated. The operation mode detection process 21 detects that an output for setting the operation mode is input by the operation mode setting means 6 of the elevator. The degenerate operation region detection process 22 detects the degenerate operation region input by the degenerate operation region setting means 5. The degenerate operation region setting means 5 sets a degenerate operation region in the hoistway.

  The safety device detection process 23 detects the operating state of the safety switch. The pulse input process 24 counts the pulses of the position / velocity detection device 7 based on the clock of the CPU of the safety controller 1. The car position detection process 25 counts the pulses detected by the pulse input process 24 and calculates the current position of the car 105 from the amount of movement of the car 105 per pulse and the counted number of pulses. The car speed detection process 26 detects the speed of the car 105 from the number of pulses detected per unit time.

  The degenerate operation request process 27 outputs a degenerate operation request to the degenerate operation region setting process 28 when a degenerate operation request is generated from the combination of the degenerate operation detection process 20 and the operation mode detection process 21. The request for degenerate operation is when the operation mode is maintenance operation and the degenerate operation is instructed by the degenerate operation permission means 4.

  The degenerated operation area setting process 28 receives the degenerated operation area detection process 22 as an input, and a degenerated operation area that allows service of continuous floors except for a specific floor (a floor for which maintenance is performed) is set. Based on the inter-floor distance database 29, a speed monitoring curve that determines the speed limit for the position of the car 105 is determined in the degenerate operation region. Since a specific floor can be arbitrarily set, the speed monitoring curve is rearranged accordingly when the degenerate operation region changes. The inter-floor distance database 29 stores the distance data between the floors in a table format because the distance between the floors varies depending on the structure of the building.

  In the speed monitoring curve, the position at which the speed limit of the car 105 is set to zero may be zero at a predetermined position from the specific floor. For maintenance work or the like, at least the maintenance worker's The distance L required for the work area is set in front. The distance L is determined by setting the height of the landing door as a work area when maintenance work is performed on a specific floor. When maintenance work is performed at the pit or the top, the distance L is determined using a height (for example, 2 m) that does not cause a collision even when a maintenance person stands as a work area. The work area may be set with a margin in order to ensure safety.

  The area where the speed limit, which is the central area of the degenerate operation area, is constantly monitored is determined from the rated speed value of the elevator system. For example, 110 to 130% and 120% of the rated speed value are desirable.

  Further, the position at which deceleration is started is based on the rated speed of the car, the average acceleration during the operation delay time from the abnormality detection to the operation of the brake 102, and the average deceleration at the time of braking of the brake 102 (mainly the brake 102 (It may be based on the average deceleration at the time of braking) The slope is obtained, and the intersection with the line that makes the speed limit constant from the position where the speed limit is zero.

  The degenerate operation determination process 30 includes information on whether or not the safety switch (safety apparatus) obtained from the safety device detection process 23 is operating as a preliminary check process, information on the set degenerate operation area, and the current car position. Based on the speed information, it is determined whether the degenerate operation is possible. That is, when any of the safety devices is in an operating state, it is determined whether the degenerate operation is not permitted and whether the degenerate operation region is appropriate as a setting for the degenerate operation.

  When the safety device is in the operating state, the elevator normally needs to be stopped, and the degenerate operation is not permitted when the safety device is in the stopping operation. This prevents the safety device from operating and the safety device being invalidated in a dangerous state, and the elevator moving again. Further, since the operation of the safety device in the degenerate operation region can be confirmed even during the degenerate operation, the maintenance work can be performed in a state where the degenerate operation is performed.

  The process for determining whether the degenerate operation region is appropriate as the setting for degenerate operation is shown in FIG. A line 40 is a speed monitoring curve, and shows a speed limit with respect to the position at which the car can surely stop. Line 41 is the operation pattern of the car.

  The distance L indicates the distance from the bottom of the pit to the start position of the degenerate operation area, and serves as a work area for maintenance workers. The distance L indicates a distance for maintenance workers not to be caught or collided with the car, and a numerical value instructed by the Building Standard Act or EN81 standard is usually applied to this distance. A distance M indicates a distance from the bottom of the pit to the end portion of the degenerate operation region set. When the distance M to the terminal portion of the degenerate operation region set as shown in FIG. 8 cannot satisfy the distance L (L> M), the degenerate operation determination process 30 does not permit the degenerate operation.

  FIG. 9 shows processing for determining whether or not the degenerate operation area on the middle floor is appropriate as a setting for degenerate operation. An area N shown in FIG. 9 indicates a work area for a maintenance worker to perform maintenance work safely on the intermediate floor. For example, the width of the work area N is set based on the height of the door structure. In order to stop more safely, the setting value of the work area N is set with a margin. When the work area N includes the terminal portions of the car speed monitoring curves 40A and 40B, the degenerate operation determination processing 30 does not permit the degenerate operation.

  As described above, it is possible to execute the degenerate operation safely by checking in advance the validity of the degenerate operation region in which the degenerate operation determination process 30 is set.

  Next, when the degenerate operation determination process 30 permits the degenerate operation, the degenerate operation is determined based on the car speed monitoring curve set by the degenerate operation area setting process 28 depending on whether the current position and speed of the car are below the speed limit. The safety state is always determined, and if no abnormality is recognized, the degenerate operation permission output and the degenerate region output are output to the elevator controller. The elevator system receives the degenerate operation permission output and the degenerate operation region output, and controls the car so as to operate only in the degenerate operation region. When an abnormality occurs during operation (for example, when the current speed of the car exceeds the speed limit determined by the car speed monitoring curve), the brake power supply cutoff output and the power supply cutoff output are output to stop the elevator.

  The safety device invalidation processing 31 receives the input of the safety device obtained from the safety device detection processing 23 and the degenerate operation region from the degenerate operation region setting processing 28, invalidates the safety device corresponding to the degenerate operation region, and invalidates it. Outputs information on the safety device For example, when the lowest floor is set in the degenerate operation region, the control station that operates the elevator during the maintenance operation, the final limit switch, and the like are invalidated.

  The safety device operation notifying process 32 outputs information indicating which safety device is invalidated and information indicating that it is functionally invalid but is operating on hardware. Thereby, when the degenerate operation region is set to the lowest floor and the final limit switch is invalidated, the maintenance worker can confirm the mechanical operation to check the final limit switch.

  Also, disabling the control station gives an impact to passengers who are using the car as usual during a degenerate operation by operating the control station and suddenly stopping the car 105. Not needed for.

  The safety device activation processing 33 receives information on the safety device that has been invalidated from the safety device invalidation processing 31 and, when a safety device that has not been invalidated is in an operating state, outputs a brake power cutoff output and a power source cutoff output. Output.

  FIG. 3 shows the car speed monitoring curve 40 and the car operation pattern 41 with the vertical axis speed and the horizontal axis position, and the degenerate operation region setting process 28 will be described. FIG. 3 shows a 4th floor building, except for the 1st floor, a degenerate operation area is set up to service the continuous 2nd to 4th floor, and the car 105 operates at a speed change like the operation pattern 41 of the car. Is done.

  In normal operation that is not degenerate operation, the car speed monitoring curve 40 is set as a car speed monitoring curve based on the pit floor surface and ceiling, which are the terminal parts, but the degenerate operation area setting means 5 does not serve the first floor. Since it is a floor, even when maintenance work is performed on the first floor, a position where the top clearance for the maintenance worker can be secured so that the car 105 can be stopped securely and safely (the maintenance worker is sandwiched between the cage and The speed monitoring curve 40 is reset with respect to the speed monitoring curve 40 in normal operation from the distance L for avoiding a collision).

  As a result, as long as the car 105 is operated within the range of the speed monitoring curve 40 in FIG. 3, even if the maintenance work is performed on the first floor, the car is maintained on the first floor. The service on the first floor stops, but the service on the other floor can be continued.

  FIG. 4 shows an 8th floor building and shows an example in which a continuous degenerate operation area is set except for the 6th floor. In the case of the figure, the specific floor is an intermediate floor, and a plurality of degenerate operation areas can be set, but the one with a longer hoistway length is preferentially degenerated. Therefore, the degenerate operation area setting process 28 outputs the speed monitoring curve 44 to the degenerate operation determination process 30 and the elevator controller 100, so that the car 105 operates only in the degenerate operation area having a long hoistway length and from the first floor to the fifth floor. Will come to be.

  The determination of the degenerate operation region may be performed from the direction with the greater traffic flow, rather than giving priority to the longer hoistway length. That is, in FIG. 4, when the traffic flow is higher in the upper area 7th floor to the 8th floor than the area 1st floor to the 5th floor below the 6th floor, the degenerate operation area is operated from the 7th floor to the 8th floor.

  FIG. 5 shows a block diagram in which a traffic flow database 34 is added. The traffic flow database is a database of the number of passengers on each floor and the number of passengers getting off each time zone. The OD matrix (Origin-Destination matrix) is known. Other than that, any traffic flow can be understood or estimated.

  If the traffic flow database 34 estimates that the number of users will increase or increase only between specific floors in an elevator with a long hoistway length, such as during a lunch in a high-rise building or holding a conference with a large number of people, If a large number of degenerate operation areas are set, safety can be ensured in areas where the vehicle is not operated, and more efficient elevator operation is possible.

  Further, the degenerate operation area setting means 5 may be a switch indicating each floor, or if the degenerate operation area is designated more finely, the safety controller is connected to an external terminal such as a personal computer, and the degenerate operation area is more detailed than the external terminal. An operating region may be specified.

  FIG. 6 is an overall configuration diagram showing an elevator system in which the safety controller 1 is connected to the landing notification means 10 and the maintenance staff notification means 11 at the landings on each floor, and is serviced differently during normal operation. The floor is limited. For this reason, when the degenerate operation is not notified to the user, there is a possibility that the user waits for a long time, or the maintenance worker does not notice the degenerate operation and erroneously performs the operation. In order to prevent this, the hall notification means 10 and the maintenance staff notification means 11 or the display device in the car notify that the degeneration operation is being performed and the floor in which the degeneration operation is being performed. . As a device for these notification means, for example, an announcement using a liquid crystal monitor, LED, or speaker is desirable. Thereby, after notifying that the service of the elevator has fallen to a user, utilization can be promoted.

DESCRIPTION OF SYMBOLS 1 Safety controller 2 Brake power supply 4 Degeneration operation permission means 5 Degeneration operation area setting means 6 Operation mode setting means 7 Position speed detection device 8 Safety switch (top clearance securing switch)
9 Safety switch (final limit switch)
29-floor distance database 40, 44, 46 Speed monitoring curve 105 Car

Claims (8)

In an electronic elevator equipped with a safety controller in which a car services multiple floors and commands power-off or brake operation by input of a safety switch installed in the hoistway.
A position / speed detector for detecting the position and speed of the car;
A floor-to-floor distance database storing distances between the floors;
Is set to be a plurality of degenerate operation areas that can service a continuous floor excluding a specific floor that is an intermediate floor, and based on the inter-floor distance database for the degenerate operation area A speed monitoring curve that defines a speed limit for the position of the car is determined in the degenerate operation region, and when the car exceeds the speed limit, the safety controller cuts off the power or operates the brake. Electronic elevators to do.   The electronic elevator according to claim 1, wherein the speed monitoring curve sets the speed limit to zero at a predetermined position from the specific floor.   2. The electronic elevator according to claim 1, wherein the speed monitoring curve is constant at 110 to 130% of the rated speed of the car in a central region of the degenerate operation region, and is based on an average deceleration during braking. An electronic elevator characterized in that the speed limit is set to zero at a predetermined position from the specific floor. The electronic elevator according to any one of claims 1 to 3, wherein a degenerate operation is preferentially performed in a region having a long hoistway length among the plurality of set degenerate operation regions . The electronic elevator according to any one of claims 1 to 3, wherein a region having a high traffic flow among the plurality of the set degenerate operation regions is operated in a degenerate manner.   The electronic elevator according to any one of claims 1 to 3, further comprising a traffic flow database in which the number of passengers on each floor and the number of people getting off are stored in a database, and the degenerate operation area is set based on the traffic flow database. An electronic elevator.   4. The electronic elevator according to claim 1, wherein the degenerate operation is performed based on information on whether the safety switch is operating, information on the degenerated operation region, and information on a current car position and speed. 5. An electronic elevator characterized by determining whether or not   The electronic elevator according to any one of claims 1 to 3, wherein when the degenerate operation is being performed, the fact that the degenerate operation is being performed and the floor where the degenerate operation is being performed are reported. An electronic elevator.