JP2007055691A - Device for preventing start of elevator with opened door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect start of a car having an opened door before the car departs from a door zone, and further shorten a car traveling distance from start in the state where the door is opened to braking/stopping. <P>SOLUTION: A car position correcting means 12 performs car relevel operation when the car 1 departs from a floor landing zone in the state where the door is opened. A fall prevention means 13 operates a rope gripper 6 when a difference between the position of the car 1 when its door is opened and the position of the car 1 after correction is performed by the car position correcting means 12 exceeds a predetermined value. Due to this, start of the car 1 of which door is opened can be detected at an earlier time point before the car 1 departs from the door zone. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator door development vehicle for preventing passengers from getting injured when the car stops on the floor for passengers getting on and off and the car is open while the door is open due to some trouble. The present invention relates to a prevention device.

  In general, when an elevator car is landed on a landing, a floor plate installed near the landing is detected by a door zone detection switch and a floor zone detection switch attached to the car, and the floor of the car is placed on the landing. It is controlled to match the floor surface. When the number of passengers in the car changes due to passengers getting on and off and the car is raised or lowered, a car relevel operation is performed to correct the car position.

  Even when the braking force of the electromagnetic brake is insufficient, there is one in which the elevator car is held at the floor position so that passengers can easily get off (see, for example, Patent Document 1). That is, when the car is stopped on the floor, even if the car stop position is outside the landing error range due to an electromagnetic brake abnormality, if the car is within the first reference range, the motor is started and the car is placed in the landing error range. Even if the car moves due to an electromagnetic brake abnormality and moves out of the first reference range, if the amount of movement is within the second reference range, the car is started and moved into the landing error range. Then, the electric motor is inverter-controlled to hold the car in the landing position.

On the other hand, if the elevator car is out of the door zone (generally floor level ± 200mm) and it is still in the door open state, it is judged that something is abnormal and the brakes are operated or the rope that hangs the car is used. The rope gripper that grips and prevents the car from falling is operated to take measures to stop the elevator.
Japanese Patent Laid-Open No. 2002-20046

  However, the thing of patent document 1 hold | maintains the elevator car in a floor position even when the braking force of an electromagnetic brake is insufficient, and prevents raising and lowering of an elevator with the door open. Absent.

  On the other hand, in the case of taking measures to stop the elevator by detecting that the car position is out of the door zone, until the elevator is completely stopped, the brake is activated only after the door zone is removed. May travel several hundred mm or 1000 mm or more. In particular, in an elevator operated at high speed, the distance until the elevator is completely stationary becomes longer. Even so, it is possible to avoid extremely dangerous situations such as passengers being caught between the elevator car and the floor or ceiling of the landing.

  However, there will be a large difference in level between the car floor and the landing floor, so there is a danger that passengers who are in the middle of getting on and off may fall and be injured. In addition, since gearless elevators have better mechanical efficiency than geared elevators, acceleration will be faster if they are started with the doors open, and braking will be even greater if braking is performed when the door zone is removed. End up.

  An object of the present invention is to provide an elevator door development vehicle prevention device that can detect a door development vehicle before the car position deviates from the door zone and can further shorten the car travel distance from the door development vehicle to braking / stopping. Is to get.

  The elevator door development vehicle prevention device according to the invention of claim 1 includes a car position detection device for detecting a car position, a test plate provided in the vicinity of a landing, and the car position within the door zone by detecting the test plate. A door zone detection switch that detects that the car is in the landing zone by detecting the test plate, and a car that falls by holding the rope hanging the car A rope gripper for preventing the car, a car position correcting means for performing a car relevel operation when the car position is out of the landing zone in a door open state, a car position when the car is opened and the car position correcting means. And a fall prevention means for operating the rope gripper when the difference from the car position after the car position correcting operation exceeds a predetermined value.

  The elevator door development vehicle prevention device according to the invention of claim 2 includes a car position detection device for detecting a car position, a test plate provided in the vicinity of a landing, and the car position within the door zone by detecting the test plate. A door zone detection switch for detecting that the vehicle is in the landing zone by detecting the landing plate, and the door zone detection switch and the floor level detection switch. When the landing switch provided in between, the rope gripper that grips the rope hanging the car and preventing the car from falling, and when the floor zone detection switch no longer detects the landing plate in the open state Car position correcting means for starting the count of the timer and performing the car relevel operation, and within a certain time after the car position correcting operation by the car position correcting means. When both of zone detection switch and the landing switch no longer detects the deposition test plate is characterized in that a fall preventing means for operating the rope gripper.

  According to a third aspect of the present invention, there is provided an elevator door development vehicle prevention device comprising: a car position detecting device for detecting a car position; a landing plate provided in the vicinity of a landing; and the car position within the door zone by detecting the landing plate. A door zone detection switch that detects that the car is in the landing zone by detecting the test plate, and a car that falls by holding the rope hanging the car A rope gripper for preventing the car, and a car position that starts the timer counting when the floor zone detection switch no longer detects the test plate in the door open state and detects the car speed at that time, and performs the car level operation. After the car position correcting operation is performed by the correcting means and the car position correcting means, the floor zone detection switch does not detect the test plate, and the car position correcting hand And a fall prevention means for operating the rope gripper when the car speed after the car position correction operation is larger than the car speed at the start of counting of the timer within a certain time. To do.

  According to a fourth aspect of the present invention, there is provided an elevator door development vehicle prevention device comprising: a car position detection device for detecting a car position; a test plate provided in the vicinity of a landing; and the car position within the door zone by detecting the test plate. A door zone detection switch that detects that the car is in the landing zone by detecting the test plate, and a car that falls by holding the rope hanging the car A rope gripper for preventing the car and a car position that starts the timer counting when the floor zone detection switch stops detecting the test plate in the door open state and detects the car position at that time and performs the car level operation. After the car position correcting operation is performed by the correcting means and the car position correcting means, the floor zone detection switch no longer detects the test plate, and the car position is in the same direction. When displaced it is characterized in that a fall preventing means for actuating said rope gripper after a certain time.

  According to the present invention, the door development vehicle can be detected before leaving the door zone, and detection can be performed at an earlier time point, so that the car traveling distance from the door development vehicle to braking / stop can be further shortened. Can prevent harm to passengers.

(First embodiment)
FIG. 1 is a configuration diagram of an elevator door development vehicle prevention apparatus according to a first embodiment of the present invention. The elevator car 1 is suspended from the hoisting machine 4 by a rope 9, and the car 1 is raised and lowered by driving the electric motor of the hoisting machine 4. FIG. 1 shows a state where the car 1 is stopped by opening the door 2 at the floor level of the landing.

  The car 1 is provided with a landing device 7. The landing device 7 has a floor level detection switch 7a and a door zone detection switch 7c, and a landing plate 8 is provided in a hoistway near the landing. The floor level detection switch 7a and the door zone detection switch 7c operate when the landing plate 8 is detected. The car 1 is provided with a door open / close detection switch 10 for detecting the open / closed state of the door 2.

  The hoisting machine 4 is provided with a brake in addition to an electric motor (not shown), and further with a car position detecting device 3. The car position detection device 3 detects the number of rotations of the electric motor of the hoisting machine 4 with a pulse generator and obtains the car position from the pulse count. Further, a rope gripper 6 that holds the rope 9 from which the car 1 is suspended and prevents the car 1 from falling is provided.

  On the other hand, the control panel 5 includes a control device 11 that controls the raising / lowering of the car 1, a car position correcting means 12 that corrects the car position with respect to the floor surface of the landing, and a fall preventing means 13 that operates the rope gripper 6. Have. The control device 11 inputs the car position detected by the car position detection device 3, the operation signal of the floor level detection switch 7 a and the door zone detection switch 7 c, and the door opening / closing signal of the door opening / closing detection switch 10, and the motor of the hoisting machine 4 The operation stop command is output to the vehicle and the brake to perform the landing control and operation control of the car 1.

  For example, when the car 1 reaches the landing, the floor plate of the car is detected by detecting the landing plate 8 provided in the vicinity of the landing by the door zone detection switch 7c and the floor zone detection switch 7a attached to the car 1. Is controlled to match the floor of the platform.

  FIG. 2 is a flowchart showing the operation contents of the elevator door development vehicle prevention apparatus according to the first embodiment of the present invention. When the elevator car 1 opens the door 2 at the floor level and enters the door open state (S1), the control device 11 reads and stores the car position P1 when the door position is opened from the car position detection device 3 (S2). . Next, it is determined whether or not the door is closed. Whether or not the door is to be closed is determined based on whether or not the door opening time at the landing has exceeded a predetermined time, or whether or not the door closing button has been pressed (S3). If the door is closed, there is no door development vehicle and the process is terminated.

  On the other hand, if the door is not closed, it is determined whether the car 1 is in the landing zone (S4). That is, it is determined whether or not the floor level detection switch 7a detects the landing plate 8. If the floor level detection switch 7a detects the landing plate 8, the car position is shifted from the floor level. Since there is not, it returns to step S3. If the floor level detection switch 7a does not detect the touch plate 8, it is determined that a floor level shift has occurred, and a car relevel operation is performed to match the floor of the car with the floor of the landing ( S5).

  Then, the car position detection device 3 reads the current car position P2, and calculates a difference ΔP between the car position P2 after the car position correction operation and the car position P1 stored in step S2 (S6). It is determined whether or not the calculated difference ΔP is equal to or smaller than a certain value (S7). If the difference ΔP is equal to or smaller than the certain value, it is determined that the house development vehicle is not being used, and the process returns to step S3. On the other hand, if the difference ΔP exceeds a certain value, it is determined that the vehicle is in the state of a developed vehicle, and the rope gripper 6 is operated (S8). As a result, the car 1 is stopped and the process ends.

  Thus, in the first embodiment, the car 1 is stopped by operating the rope gripper 6 when it is determined that the car 1 has been opened for a certain distance from the floor level of the landing. It is. That is, the car position correcting means 12 performs a car relevel operation when the car position is out of the landing zone in the door open state, and the fall preventing means 13 corrects the car position and the car position when the car 1 is opened. The difference ΔP from the car position after the car position correcting operation is performed by the means 12 is obtained. When the ΔP exceeds a predetermined value, the rope gripper 6 is operated.

  According to the first embodiment, since the car 1 is moved a certain distance in the door open state, the departure in the door open state is detected, so that the constant distance is set shorter than the door zone range, so that it is faster. At this point, the car can be braked to prevent passengers from being harmed.

(Second Embodiment)
FIG. 3 is a configuration diagram of the elevator door development vehicle prevention device according to the second embodiment of the present invention. In the second embodiment, a landing switch 7b is provided between the door zone detection switch 7c and the floor level detection switch 7a of the landing device 7, and the landing plate 8 is a floor level detection switch 7a of the landing device 7. Is measured by a timer in the control device 11 of the control panel 5, and if the measured time is within a certain time, the rope gripper 6 is operated to move the car. 1 is stopped. The same elements as those in the first embodiment shown in FIG.

  In FIG. 3, the landing device 7 is additionally provided with a landing switch 7b between a door zone detection switch 7c and a floor level detection switch 7a. When the car 1 that is stopped on the floor and is opened due to passengers getting on and off starts running with the door open due to some trouble, a plurality of switches 7a to 7c of the landing device 7 are caused by the traveling of the car 1. , 7c to 7a are detached from the test plate 8 in order. The landing switch 7b added at a position away from the floor level detection switch 7a by a certain distance (for example, a distance of about 100 mm) is also detached from the landing plate 8.

  When the time interval during which the two floor level detection switches 7a and landing switches 7b are OFF is less than a certain time, that is, the car floor gradually sinks as passengers get on and off from the time interval. If it is considered that the car has started traveling unexpectedly, it is determined that the door-opening has started and the car fall prevention means 13 is immediately operated. This prevents passengers from getting injured.

  FIG. 4 is a flowchart showing the operation contents of the elevator door development vehicle prevention apparatus according to the second embodiment of the present invention. When the elevator car 1 opens the door 2 at the floor level and opens (S1), it is determined whether or not the door is closed (S2). Whether the door is to be closed is determined by whether the door opening time at the landing has passed a predetermined time or whether the door closing button has been pressed. If the door is closed, there is no door development vehicle and the process is terminated.

  On the other hand, when the door is not closed, the floor level detection switch 7a determines whether or not the receiving plate 8 has been removed (S3). That is, it is determined whether the car 1 is in the landing zone. If the floor level detection switch 7a detects the receiving plate 8, the car position is not deviated from the floor level, and the process returns to step S2. When the floor level detection switch 7a does not detect the touch plate 8, it is determined that a floor level shift has occurred, the timer in the control device 11 of the control panel 5 is started, and time measurement is started. (S4) A car relevel operation is performed to match the floor of the car with the floor of the landing (S5).

  Thus, since the car 1 has been releveled, it is determined again whether or not the floor level detection switch 7a has detected the receiving plate 8 (S6). If the floor level detection switch 7a detects the receiving plate 8, the car 1 is releveled and the process returns to step S2. On the other hand, if the floor level detection switch 7a does not detect the landing plate 8, it is determined whether the landing switch 7b has come off the landing plate 8 (S7), and the landing switch 7b turns the landing plate 8 off. If not, the process returns to step S5 and the car relevel operation is performed again.

  If the landing switch 7b is out of the inspection plate 8, it is determined whether or not the floor level shift so far is caused by the door development vehicle. That is, it is determined whether or not the count value of the timer started in step S4 is within a certain time (S8). If the count value of the timer is not within a certain time, it is not a sudden change in the car position, so the floor level shift so far is not due to the door development car, but the car floor gradually subsided as passengers got on and off. The determination is returned to step S5, and the car relevel operation is performed.

  On the other hand, if the count value of the timer is within a certain time, it is a sudden change in the car position, so that it is determined that the house is being developed and the rope clipper 6 is operated (S9). As a result, the car stops and the processing ends.

  According to the second embodiment, a landing switch 7b is additionally provided in the landing device 7, and a change in the car position is detected using the two switches of the floor level detection switch 7a and the landing switch 7b. Therefore, the car 1 can be braked at an earlier time point to prevent the passengers from being harmed.

(Third embodiment)
FIG. 5 is a flowchart showing the operation contents of the elevator door development vehicle prevention apparatus according to the third embodiment of the present invention. This third embodiment is the same as the second embodiment shown in FIG. 3 except that the landing switch 7b is not provided, and is the configuration of the first embodiment shown in FIG. For the operation content of the second embodiment, instead of the change in the car position by the floor level detection switch 7a and the landing switch 7b of the landing device 7, the departure in the door open state is detected by the change in the car speed. It is what I did.

  In FIG. 5, when the elevator car 1 opens the door 2 at the floor level and enters the door open state (S1), it is determined whether or not the door is closed (S2). Whether the door is to be closed is determined by whether the door opening time at the landing has passed a predetermined time or whether the door closing button has been pressed. If the door is closed, there is no door development vehicle and the process is terminated.

  On the other hand, when the door is not closed, the floor level detection switch 7a determines whether or not the receiving plate 8 has been removed (S3). That is, it is determined whether the car 1 is in the landing zone. If the floor level detection switch 7a detects the receiving plate 8, the car position is not deviated from the floor level, and the process returns to step S2. When the floor level detection switch 7a does not detect the touch plate 8, it is determined that a floor level shift has occurred, the timer in the control device 11 of the control panel 5 is started, and time measurement is started. The car speed v1 is stored (S4). The car speed v1 is obtained by differentiating the car position detected by the car position detection device 3 by the control device 11 with respect to time. Then, a car relevel operation is performed to match the floor surface of the car 1 with the floor surface of the landing (S5).

  Thus, since the car 1 has been releveled, it is determined again whether or not the floor level detection switch 7a has detected the receiving plate 8 (S6). If the floor level detection switch 7a detects the receiving plate 8, the car 1 is releveled and the process returns to step S2. On the other hand, if the floor level detection switch 7a does not detect the receiving plate 8, the car speed v2 is stored again. The car speed v2 is obtained by differentiating the car position after the car relevel operation detected by the car position detecting device 3 by the control device 11 with respect to time.

  Next, the car speed v2 after the car relevel operation is compared with the car speed v1 obtained in step S4 (S8). If the car speed v2 after the car relevel operation is smaller than the car speed v1 at the start of the timer count, Returning to step S5, the car relevel operation is performed again. On the other hand, when the car speed v2 after the car relevel operation is larger than the car speed v1 at the start of the timer count, it is determined whether the floor level shift so far is caused by the door development vehicle.

  That is, it is determined whether or not the count value of the timer started in step S4 is within a certain time (S9). If the count value of the timer is not within a certain time, it is not a sudden change in the car position, so the floor level shift so far is not due to the door development car, but the car floor gradually subsided as passengers got on and off. The determination is returned to step S5, and the car relevel operation is performed.

  On the other hand, if the count value of the timer is within a certain time, it is a sudden change in the car position, so it is determined that the house is being developed and the rope clipper 6 is operated (S10). As a result, the car stops and the processing ends.

  According to the third embodiment, when the car speed does not decrease within a predetermined time, the car floor is not gradually lowered as passengers get on and off, but the car 1 is traveling with the door open. Since the car fall prevention means 13 is immediately operated, it is possible to prevent the vehicle from being opened in the door open state before leaving the door zone. That is, the car 1 can be braked at an earlier time point to prevent the passengers from being harmed.

(Fourth embodiment)
FIG. 6 is a flowchart showing the operation contents of the elevator door development vehicle prevention apparatus according to the fourth embodiment of the present invention. This fourth embodiment is different from the third embodiment shown in FIG. 4 in that the car 1 does not decrease, but the car 1 continues to change in the same direction, either the up or down direction. In this case, the cage 1 is stopped by operating the rope clipper 6.

  In FIG. 6, when the elevator car 1 opens the door 2 at the floor level to be in the door open state (S1), it is determined whether or not the door is closed (S2). Whether the door is to be closed is determined by whether the door opening time at the landing has passed a predetermined time or whether the door closing button has been pressed. If the door is closed, there is no door development vehicle and the process is terminated.

  On the other hand, when the door is not closed, the floor level detection switch 7a determines whether or not the receiving plate 8 has been removed (S3). That is, it is determined whether the car 1 is in the landing zone. If the floor level detection switch 7a detects the receiving plate 8, the car position is not deviated from the floor level, and the process returns to step S2. If the floor level detection switch 7a does not detect the test plate 8, it is determined that a floor level shift has occurred, and counting of the timer in the control device 11 of the control panel 5 is started (S4). Then, the control device 11 reads and stores the car position P1 at the start of the timer count from the car position detection device 3 (S5), and performs a car relevel operation for matching the floor surface of the car 1 with the floor surface of the landing (S6).

  Thus, since the car 1 has been releveled, it is determined again whether the floor level detection switch 7a has detected the test plate 8 (S7). If the floor level detection switch 7a detects the receiving plate 8, the car 1 is releveled and the process returns to step S2.

  On the other hand, if the floor level detection switch 7a does not detect the test plate 8, the car position P2 after the car leveling operation is compared with the car position P1 obtained in step S5 (S8), and the car position is in the same direction. It is determined whether it is displaced (S9). If it is not changed in the same direction, it is determined that the floor level shift so far is not caused by the door development car but the car floor is gradually displaced as passengers get on and off, and the process returns to step S5 to perform the car relevel operation. .

  If the car 1 has shifted in the same direction, it is determined whether or not the count value of the timer that has started counting in step S4 has elapsed (S10). It is determined whether or not a certain time has elapsed since the time count was started at the timer count value (S4) (S10), and if the certain time has not elapsed, the process returns to step S5. On the other hand, when the predetermined time has passed, it is determined that the car 1 is developing a house, and the rope clipper 6 is operated (S11). As a result, the car stops and the processing ends.

  According to the fourth embodiment, when it is detected that the car 1 in the door-opening stop is continuously displaced in the same direction of either the ascending direction or the descending direction for a predetermined time, Since the car floor is not displaced gradually with getting on and off, it is determined that the car 1 has started running, and the car fall prevention means 13 is immediately operated. Therefore, the car 1 in the door open state before the car 1 leaves the door zone. Can be prevented. As a result, the car can be braked at an earlier time point to prevent passengers from being harmed.

The block diagram of the elevator door development vehicle prevention apparatus concerning the 1st Embodiment of this invention. The flowchart which shows the operation | movement content of the elevator door development vehicle prevention apparatus concerning the 1st Embodiment of this invention. The block diagram of the elevator door development vehicle prevention apparatus concerning the 2nd Embodiment of this invention. The flowchart which shows the operation | movement content of the elevator door development vehicle prevention apparatus concerning the 2nd Embodiment of this invention. The flowchart which shows the operation | movement content of the elevator door development vehicle prevention apparatus concerning the 3rd Embodiment of this invention. The flowchart which shows the operation | movement content of the elevator door development vehicle prevention apparatus concerning the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car, 2 ... Door, 3 ... Car position detection device, 4 ... Hoisting machine, 5 ... Control panel, 6 ... Rope gripper, 7 ... Landing device, 7a ... Floor level detection switch, 7b ... Landing switch, 7c: door zone detection switch, 8 ... landing plate, 9 ... rope, 10 ... door opening / closing detection switch, 11 ... control device, 12 ... car position correction means, 13 ... fall prevention means

Claims (4)

  A car position detecting device for detecting a car position; a test plate provided in the vicinity of a landing; a door zone detection switch for detecting that the test plate is within a door zone; and the test plate Detecting the position of the car in the landing zone, a rope gripper for holding the car and preventing the car from falling, and the car position when the door is open. The difference between the car position correcting means that performs the car relevel operation when leaving the landing zone, the car position when the car is opened, and the car position after the car position correcting action is performed by the car position correcting means. An elevator door development vehicle prevention device comprising: fall prevention means for operating the rope gripper when the value exceeds a predetermined value.   A car position detecting device for detecting a car position; a test plate provided in the vicinity of a landing; a door zone detection switch for detecting that the test plate is within a door zone; and the test plate A floor zone detection switch for detecting that the position of the car is within the landing zone, a landing switch provided between the door zone detection switch and the floor level detection switch, and a rope hanging the car A rope gripper that grips the car and prevents the car from falling, and a car position correction that starts counting the timer when the floor zone detection switch stops detecting the test plate when the door is open, and performs a car relevel operation. Both the floor zone detection switch and the landing switch within a predetermined time after the car position correcting means performs the car position correcting operation. It when it detects no test plate that includes a fall prevention means for operating the rope gripper elevator door development vehicle prevention device according to claim.   A car position detecting device for detecting a car position; a test plate provided in the vicinity of a landing; a door zone detection switch for detecting that the test plate is within a door zone; and the test plate Detecting the position of the car within the landing zone, detecting the floor zone, a rope gripper for holding the car and preventing the car from falling, and detecting the floor zone when the door is open When the switch no longer detects the landing plate, it starts counting the timer and detects the car speed at that time. Car position correcting means performs a car leveling operation, and the car position correcting means performs the car position correcting operation. The car speed after the floor zone detection switch does not detect the test plate and the car position correcting means performs the car position correcting operation after the car is corrected. Elevator door development vehicle prevention device characterized by comprising a fall prevention unit for operating the rope gripper when increased within a predetermined time from the car speed of the count at the start of the over. A car position detecting device for detecting a car position; a test plate provided in the vicinity of a landing; a door zone detection switch for detecting that the test plate is within a door zone; and the test plate Detecting the position of the car within the landing zone, detecting the floor zone, a rope gripper for holding the car and preventing the car from falling, and detecting the floor zone when the door is open When the switch no longer detects the test plate, the timer starts counting, and the car position correcting means which detects the car position at that time and performs a relevel operation, and the car position correcting operation by the car position correcting means When the floor zone detection switch does not detect the test plate and the car position is displaced in the same direction after the Elevator door development vehicle prevention device characterized by comprising a fall prevention means for operating over.

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