JP2005089085A - Control device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for an elevator stopping a car in a controlled range of error of landing and eliminating unrequired floor flushing operation due to in-car load fluctuation after the car is stopped in the controlled range of error of landing. <P>SOLUTION: The control device for the elevator is constituted such that the car 2 is stopped at a target landing stopping position corresponding to an output of an in-car load amount detection means 9 and the landing position can be made to high accuracy. When a detection value of the in-car load amount detection means 9 is a light load, the predetermined range of error of landing is downwardly transited and when it is a heavy load, it is upwardly transited. Thereby, the floor adjusting operation by the in-car 2 load fluctuation after the stopping in the predetermined landing error range of the car 2 can be inhibited. Further, the floor adjusting operation when the in-car 2 load is slightly reduced by getting on/off of a passenger after the car 2 is stopped at a landing 3 can be solved, the unrequired floor flushing operation action is prevented and the operation efficiency of the elevator can be enhanced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator control device that performs floor-to-floor operation of a car within a predetermined landing error range when the stop position of the car with respect to a landing is outside the predetermined landing error range.

  The conventional elevator control device corrects the speed command when the car stops, and corrects the target landing position of the car above and below the floor level according to the load in the car and the position in the hoistway of the target floor. . That is, it is configured to correct below the floor level when the load in the car is full load and above the floor level when there is no load.

  In the elevator control apparatus configured as described above, a change in the car position caused by a change in the load in the car after the landing causes a re-establishment against an out of landing error range detected by the car position detector. The frequency of floor-to-floor operation decreases. Thereby, the energy saving effect | action and lifetime improvement effect | action of the control apparatus of an elevator can be acquired. (For example, see Patent Document 1)

JP-A-6-144724 (page 3, FIG. 1)

  In conventional elevator control devices, the landing position is controlled in advance in consideration of the load fluctuation after landing of the car. If there is no fluctuation in the load in the car after landing, the car is within the landing error range. Although there is a stoppage, the landing error occurs. Further, when the load fluctuation due to passenger getting on and off is unexpectedly small, the above-described landing deviation occurs continuously, and there is a problem that the effect of reducing the landing error is reduced.

  The present invention has been made in order to solve such a problem, and it is possible to stop the car within the landing error range and to change the load in the car after the car stops within the predetermined landing error range with respect to the landing. The purpose is to obtain an elevator control device that eliminates unnecessary floor-to-floor operation.

  In the elevator control device according to the present invention, the car stop position detecting means that operates when the stop position of the car with respect to the landing provided in the elevator hoistway is outside the predetermined landing error range, and the load amount in the car A floor-to-car operation means for performing floor-to-floor operation within a predetermined landing error range with respect to the landing, energized by the operation of the car load amount detecting means for detecting the car and the car stop position detecting means, and a car stop command The elevator drive is controlled by adjusting the stop operation of the car with respect to the target landing stop position according to the output of the load detection means in the car, and the detection value of the load detection means in the car is light. The predetermined landing error range is shifted downward with respect to the landing at a certain time, and the predetermined landing error range is moved upward with respect to the landing when the detection value of the load detecting means in the car is heavy. Transferred, the control unit and is provided to prevent the operation of the floor alignment operation means by-car load change after stopping the at fixing bed error range of the car.

  In the elevator control apparatus according to the present invention, the car stops at the target landing stop position corresponding to the output of the in-car load amount detecting means when the car is instructed to stop. This has the effect of increasing the accuracy of the car landing stop position. When the detected value of the in-car load amount detecting means is a light load, the predetermined landing error range is shifted downward with respect to the landing, and the detected value of the in-car load amount detecting means is a heavy load. The predetermined landing error range is shifted to the upper side with respect to the landing, and the operation of the floor-to-floor operation means with respect to the up-and-down change due to the change in the load on the car after stopping the car within the predetermined landing error range is prevented. This prevents the floor-to-floor operation means from energizing when the car load changes slightly due to passengers getting on and off after the car stops at the landing, preventing unnecessary floor-to-floor operation. It can improve the driving efficiency of the elevator.

Embodiment 1 FIG.
1 to 7 are diagrams showing an embodiment of the present invention. FIG. 1 is a front view conceptually showing a main part of the elevator apparatus. FIG. 2 is an output of a car stop position detecting means of the elevator apparatus of FIG. FIG. 3 is a view corresponding to FIG. 1 showing the state of the elevator device in FIG. 1 when there is no load in the car, and FIG. 4 is a view of the state of the elevator device in FIG. 1 equivalent diagram, FIG. 5 is a diagram corresponding to FIG. 2 for explaining the output of the car stop position detecting means and the landing error range corresponding to FIG. 4, and FIG. 6 is for explaining the transition predetermined landing error range corresponding to FIG. FIG. 7 is a graph for explaining the transition predetermined landing error range of the elevator apparatus of FIG.

  In the figure, a car 2 moves up and down the hoistway 1 and stops at a landing 3 provided in the hoistway 1 when necessary. In addition, the car 2 includes a car frame 5 suspended from the main rope 4 and a car room 8 having a car floor 7 placed in the car frame 5 via a vibration isolating rubber 6 that deforms according to the load. It is configured. An in-car load amount detecting means 9 for detecting a load amount in the car room 8, that is, a load amount in the car 2, is provided between the lower surface of the car floor 7 and the lower member of the car frame 5. Further, a car stop position detecting means 10 for detecting the position of the car frame 5 with respect to the floor surface of the hall 3 when the car 2 stops at the hall 3 is provided.

  The car stop position detection means 10 is an upper side composed of a detection plate 11 provided on a fixed portion such as a wall of the hoistway 1 and a switch provided on the car frame 5 and generating an output 12A when facing the detection plate 11. The detector 12 and the car frame 5 are configured by a lower detector 13 including a switch that emits an output 13A when facing the detection plate 11. Further, an elevator control panel 14 is provided, and is connected to a drive machine 15 around which the car load amount detecting means 9, the car stop position detecting means 10, and the main rope 4 of the elevator are wound.

  In the elevator control apparatus configured as described above, a condition in which the mass on the car 2 side including the load in the car 2 is balanced with the mass of a counterweight (not shown) of the elevator apparatus is used as a reference. Sometimes, the upper detector 12 and the lower detector 13 are arranged so as to face the detection plate 11 of the car stop position detecting means 10. Then, in the case of the balanced load in the car, when the respective outputs 12A and 13A of the upper detector 12 and the lower detector 13 detect the detection plate 11 as shown in FIG. A stop within the floor error range, that is, within −L and + L is detected.

  Then, the control panel 14 is operated via the output of the in-car load amount detecting means 9 in response to the stop command of the car 2 to control the driving machine 15 and stop the target landing according to the output of the in-car load amount detecting means 9. Stop the car 2 in position. This makes it possible to stop the car 2 from landing at a position within the predetermined landing error range and with a smaller landing error relative to the landing 3. Further, since the upper detector 12 and the lower detector 13 of the car stop position detecting means 10 are mounted on the car frame 5, when there is no passenger in the car room 8, that is, when there is no load in the car, the anti-vibration rubber 6 is used. The amount of compression is reduced.

  For this reason, the position of the car floor 7 moves upward as shown in FIG. 3, that is, the position of + a mm, as compared with the case of the balanced load in the car. Further, when the number of passengers in the car room 8 is the rated load capacity of the elevator, that is, when the car load is rated, the amount of compression of the anti-vibration rubber 6 increases. For this reason, the position of the car floor 7 moves downward as shown in FIG. Therefore, by setting the target landing stop position according to the output of the in-car load amount detection means 9, the car 2 can be landed and stopped with high accuracy.

  Then, the main rope 4 expands and contracts due to the load fluctuation in the car after the car 2 is stopped with high accuracy, that is, the load fluctuation in the car due to passengers getting on and off the stopped car 2. The relative position of the detection plate 11 and the upper detector 12 changes. For example, at the rated load in the car, the car frame 5 stop position is within the predetermined landing error range as shown in FIG. 5, but becomes the normal landing position + a, and is close to + L in the predetermined landing error range. Be placed.

  Therefore, when the car 2 is stopped at the landing 3 in the state of the rated load in the car and the car load is slightly reduced, the predetermined landing error by the car stop position detecting means 10 is small even if the main rope 4 is small. Out of the range (-L to + L). For this reason, the car stop position detecting means 10 operates and the floor matching operation means in the control panel 14 is energized, and the stopped car 2 is brought into the predetermined landing error range with respect to the landing 3. Thus, even if the load changes slightly after the car 2 stops at the landing 3, the floor-to-floor operation means is energized, so the number of floor-to-floor operation operations increases.

  That is, when the car 2 stops at the landing 3 in the state of the rated load in the car, the car frame 5 stop position is the normal landing position + a although it is within a predetermined landing error range as shown in FIG. With respect to such a situation, the predetermined landing error range (−L to + L) in the case of the balanced load in the car is changed to (−L + a) to (L + a) as shown in FIGS. ), That is, the upper transition predetermined landing error range is set.

  This prevents the urging of the floor-to-floor operation means when the load in the car slightly decreases after the car 2 stops at the landing 3 in the state of the rated load in the car as the number of floor-to-floor operation operations increases. Thus, unnecessary floor-to-floor operation can be prevented, and the driving efficiency of the elevator can be improved. When the car 2 stops at the landing 3 with no car loaded, the function of the control panel 14 causes (-La) to (La), i.e., downward, as shown in FIG. Transition is performed and an upper transition predetermined landing error range is set.

Embodiment 2. FIG.
FIG. 8 is a diagram showing another embodiment of the present invention and corresponds to FIG. 1 described above. Except for FIG. 8, the elevator control device is configured in the same manner as the above-described embodiments of FIGS. 1 to 7. In the figure, the same reference numerals as those in FIGS. 1 to 7 denote corresponding parts, and a filter circuit 16 is provided in the control circuit between the car load amount detecting means 9 and the control panel 14. Also in the elevator control apparatus configured as described above, the car 2 stops at the target landing stop position corresponding to the output of the in-car load amount detecting means 9 when the car 2 is instructed to stop.

  Further, when the detected value of the in-car load amount detecting means 9 is a light load, the predetermined landing error range is shifted downward with respect to the landing 3, and the detected value of the in-car load amount detecting means 9 is a heavy load. At a certain time, the predetermined landing error range is shifted to the upper side with respect to the landing 3, and the operation of the floor matching operation means due to the load change in the car after the car 2 stops within the predetermined landing error range is prevented. Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 7 can be obtained also in the embodiment of FIG.

  And the detected value of the in-car load amount detecting means 9 may fluctuate as an instantaneous value due to vibrations when passengers get on and off the car 2. At this time, the floor-to-floor operation means is unnecessarily energized by the car load amount detection value based on the instantaneous value, and an unnecessary floor-to-floor operation is performed. However, the instantaneous value of the car load amount detecting means 9 is filtered and suppressed by the filter circuit 16. Thereby, an unnecessary floor-to-floor operation operation accompanying the instantaneous value of the in-car load amount detecting means 9 can be prevented, and the driving efficiency of the elevator can be improved.

Embodiment 3 FIG.
FIG. 9 is a diagram showing another embodiment of the present invention, which corresponds to FIG. 7 described above. In addition to the configuration shown in FIG. 9, an elevator control device is configured in the same manner as in the embodiment shown in FIGS. In the embodiment of FIG. 9, the car 2 stops at the target landing stop position corresponding to the output of the in-car load amount detection means 9 when the car 2 is instructed to stop.

  Further, when the detected value of the in-car load amount detecting means 9 is a light load, the predetermined landing error range is shifted downward with respect to the landing 3, and the detected value of the in-car load amount detecting means 9 is a heavy load. At a certain time, the predetermined landing error range is shifted to the upper side with respect to the landing 3, and the operation of the floor matching operation means due to the load change in the car after the car 2 stops within the predetermined landing error range is prevented. Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 7 can be obtained also in the embodiment of FIG.

  In the embodiment of FIG. 9, when it is necessary to further reduce the landing error of the car 2, the output 12A of the upper detector 12 and the output 13A of the lower detector 13 of the car stop position detecting means 10 are used. A predetermined landing error range (-L to + L) is variably set on the control panel 14 by a program. As a result, the predetermined landing error range can be reduced by the function of the control panel 14 as shown in FIG. 9, and the landing error of the car 2 can be appropriately reduced, and passengers can get on and off the car 2 easily. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a front view which shows notionally the principal part of an elevator apparatus. The graph explaining the output of the car stop position detection means of the elevator apparatus of FIG. 1, and a landing error range. The equivalent view of FIG. 1 which shows the condition at the time of no load in a cage of the elevator apparatus of FIG. The equivalent view of FIG. 1 which shows the condition at the time of heavy load in a cage | basket | car of the elevator apparatus of FIG. FIG. 5 is a diagram corresponding to FIG. 2 for explaining the output of the car stop position detecting means and the landing error range corresponding to FIG. 4. FIG. 2 is a diagram corresponding to FIG. 2 for explaining a predetermined transition landing error range corresponding to FIG. 5. The graph explaining the transition predetermined landing error range of the elevator apparatus of FIG. It is a figure which shows Embodiment 2 of this invention, and is the above-mentioned equivalent figure of FIG. It is a figure which shows Embodiment 3 of this invention, and is FIG. 7 equivalent figure mentioned above.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Hoistway, 2 cages, 3 landings, 9 Car load amount detection means, 10 Car stop position detection means, 12 Upper detector, 12A output, 13 Lower detector, 13A output, 14 Control apparatus, 15 Driver, 16 Filter circuit.

Claims (3)

  A car stop position detecting means that operates when the stop position of the car with respect to the landing provided in the elevator hoistway is outside a predetermined landing error range; and a car load quantity detecting means for detecting a load quantity in the car. A floor-to-floor operation means for performing floor-to-float operation within the predetermined landing error range with respect to the landing, which is energized by the operation of the car stop position detecting means, and driving the elevator by the car stop command Controlling the machine to adjust the stop operation of the car with respect to the target landing stop position according to the output of the load quantity detecting means in the car, and the detected value of the load quantity detecting means in the car is light load Sometimes the predetermined landing error range is shifted downward with respect to the landing, and when the detected value of the load detecting means in the car is a heavy load, the predetermined landing error range is set to the landing. Te transitions upward, elevator control device and a control device for preventing operation of the floor alignment operation means according to the car in the load change after stopping the above plants fixing bed error range of the car.   Provided in a control circuit between the load detecting means in the car and the control panel, the instantaneous detection value of the load detecting means in the car is filtered and suppressed, and unnecessary floor-to-floor operation based on the instantaneous detection value is performed. The elevator control device according to claim 1, further comprising a filter circuit for preventing the elevator.   The control panel includes a program capable of changing a predetermined landing error range based on an output of the upper detector of the car stop position detecting means and an output of the lower detector of the car stop position detecting means. The elevator control device according to any one of claims 1 and 2.

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