WO2021124381A1

WO2021124381A1 - Elevator

Info

Publication number: WO2021124381A1
Application number: PCT/JP2019/049118
Authority: WO
Inventors: 健史近藤; 真輔井上; 森　和久; 大沼　直人
Original assignee: 株式会社日立製作所
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2021-06-24

Abstract

This elevator comprises a car frame, a car disposed in the car frame, a floor alignment device supporting the car so as to be movable in the vertical direction and adjusting the height of the floor surface of the car, and a control unit controlling drive in the floor alignment device. The control unit executes a floor alignment correction operation at a prescribed time which returns the position of the floor alignment device to an initial position.

Description

Elevator

The present invention relates to an elevator.

In recent years, as an example of an elevator, a multicar elevator in which a plurality of cars move in the same moving path has been proposed. Conventional such elevators include, for example, those described in Patent Document 1. Patent Document 1 describes a technique provided in a car and provided with a floor position correction device for adjusting the floor height of the car.

Japanese Unexamined Patent Publication No. 2008-94597

However, in the technique described in Patent Document 1, after operating the floor position correction device, the floor position correction device is continuously driven without returning the position of the floor position correction device. As a result, in the technique described in Patent Document 1, the floor position correction device reaches the movable limit in the upward or downward direction, and the height of the floor surface of the car accurately matches the height of the floor surface of the target floor. There was a problem that it could not be made to do.

The purpose of this purpose is to provide an elevator that can accurately match the height of the floor of the car with the height of the floor of the destination floor in consideration of the above problems.

In order to solve the above problems and achieve the purpose, the elevator supports the car frame connected to the rope, the car room arranged in the car frame, and the car room so as to be movable in the vertical direction, and the floor of the car room. It includes a floor alignment device that adjusts the height of the surface and a control unit that controls the drive of the floor alignment device. The control unit performs a floor alignment correction operation for returning the position of the floor alignment device to the initial position at a predetermined timing.

According to the elevator having the above configuration, the height of the floor of the car can be accurately matched with the height of the floor of the target floor.

It is a schematic block diagram which shows the elevator which concerns on the Example of Embodiment. It is a block diagram which shows the structure of the control system of the elevator which concerns on the Example of Embodiment. It is a flowchart which shows the floor alignment operation in the elevator which concerns on embodiment. It is explanatory drawing which shows the operation amount of the floor alignment apparatus in the elevator which concerns on embodiment. It is a flowchart which shows the floor alignment correction operation in the elevator which concerns on embodiment. It is a schematic diagram which shows the floor alignment correction operation in the elevator which concerns on embodiment. It is a flowchart which shows the initial position correction operation in the elevator which concerns on embodiment. It is a schematic diagram which shows the initial position correction operation in the elevator which concerns on embodiment.

Hereinafter, an example of the embodiment of the elevator will be described with reference to FIGS. 1 to 8. The common members in each figure are designated by the same reference numerals.

1. 1. Embodiment 1-1. Configuration of the Elevator First, the configuration of the elevator according to the embodiment (hereinafter referred to as “this example”) will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram showing a configuration example of the elevator of this example.

The elevator shown in FIG. 1 is a multi-car elevator in which a plurality of cars move on the same hoistway. As shown in FIG. 1, the elevator 1 is a rope connecting the first car 2A and the second car 2B, which move up and down the moving

paths

100A and 100B, which will be described later, and the first car 2A and the second car 2B. 3, an upper pulley 4, a lower pulley 5, and a tower inner control unit 6 are provided.

The building structure is provided with a first moving path 100A and a second moving path 100B in which the

cars

2A and 2B move up and down along the vertical direction. The first movement path 100A and the second movement path 100B are formed adjacent to each other.

Further, the building structure is provided with a first reversing path 100C and a second reversing path 100D. The first reversing path 100C is provided at the lower end of the first moving path 100A and the second moving path 100B in the vertical direction, and the second reversing path 100D is provided in the vertical direction of the first moving path 100A and the second moving path 100B. It is provided at the upper end. In the first reversal path 100C and the second reversal path 100D, the directions of movement of the

cars

2A and 2B are reversed from ascending to descending or descending to ascending. When the

cars

2A and 2B pass through the first reversing road 100C and the second reversing road 100D, no passengers get in the

cars

2A and 2B.

The first moving path 100A is provided with the first car position detecting body 7A, and the second moving path 100B is provided with the second car position detecting body 7B. The

car position detectors

7A and 7B are formed with scales and bar codes that can be detected by the car position detection device 15 described later.

The first car position detector 7A and the second car position detector 7B are erected in parallel along the vertical direction. The lower end of the

car position detectors

7A and 7B in the vertical direction does not reach the first reversal path 100C, and the upper end of the

car position detectors

7A and 7B in the vertical direction does not reach the second reversal path 100D. ..

Further, a hall switch 121 is provided at the boarding / alighting area 120 where the

cars

2A and 2B in the building structure stop. The hall switch 121 is wirelessly or wiredly connected to the tower inner control unit 6 described later. When the hall switch 121 is pressed, the hall switch 121 transmits a call signal to the tower inner control unit 6. Then, the car call registration is performed in the tower inner control unit 6. The tower inside control unit 6 moves the

cars

2A and 2B to the boarding / alighting area 120 registered as a call.

Door zone detectors

8A and 8B are provided in the vicinity of the boarding / alighting area 120 on the first movement path 100A and the second movement path 100B. The

door zone detectors

8A and 8B are detected by the door zone detection devices 17 provided in the

cars

2A and 2B described later. As a result, it is possible to recognize that the

cars

2A and 2B have approached the boarding / alighting area 120.

The lower pulley 5 is provided on the first reversing path 100C, and the upper pulley 4 is provided on the second reversing path 100D. One of the upper pulley 4 and the lower pulley 5 is a drive pulley, and is rotationally driven by the tower inner control unit 6. Further, a rope 3 is stretched on the upper pulley 4 and the lower pulley 5.

The first car 2A and the second car 2B are connected to the rope 3. Then, when the upper pulley 4 or the lower pulley 5 is rotationally driven, the first car 2A, the second car 2B, and the rope 3 circulate and move between the upper pulley 4 and the lower pulley 5.

Next, the first car 2A and the second car 2B will be described. Since the first car 2A and the second car 2B have the same configuration, the first car 2A will be described here.

The first car 2A includes a car frame 11, a hollow car room 12, a floor alignment device 13, a car side control unit 14, a car position detection device 15, and a door zone detection device 17. A rope 3 is connected to the car frame 11.

The car side control unit 14 and the car position detecting device 15 are provided in the car frame 11. The car position detecting device 15 detects the position of the car 2A by detecting the scales and barcodes of the car

position detecting bodies

7A and 7B provided on the moving

paths

100A and 100B. As described above, the

car position detectors

7A and 7B do not extend to the first reversing path 100C and the second reversing path 100D. Therefore, when the car position detecting device 15 is separated from the car

position detecting bodies

7A and 7B, the car position detecting device 15 determines that the

cars

2A and 2B are moving on the first reversing path 100C or the second reversing path 100D. To do.

The car side control unit 14 controls the entire first car 2A. Further, the car side control unit 14 is wirelessly or wiredly connected to the tower inner control unit 6. The detailed configuration of the car side control unit 14 will be described later.

The car room 12 is arranged in the car frame 11 via the floor alignment device 13. People and luggage get on and off the inside of the car room 12. Further, inside the car room 12, a car switch 16 for registering the destination floor is provided.

The floor alignment device 13 is installed in the car frame 11. The floor alignment device 13 supports the car chamber 12 so as to be movable in the vertical direction. Under the control of the car side control unit 14, the floor alignment device 13 moves the car chamber 12 in the vertical direction to adjust the height of the floor surface 12a of the car chamber 12. Specifically, the floor alignment device 13 makes the height of the floor surface 12a of the car room 12 match the height of the floor surface of the boarding / alighting area 120. As the floor alignment device 13, for example, various driving methods such as hydraulic pressure, pneumatic pressure, a pantograph mechanism, an electric winch, a driving mechanism including a rack and a pinion, and the like are applied.

The door zone detection device 17 is provided in the car room 12. The door zone detection device 17 includes, for example, a light emitting unit that irradiates light and a light receiving unit that receives light from the light emitting unit. Then, when the

cars

2A and 2B move to the

door zone detectors

8A and 8B, the light from the light emitting portion of the door zone detector 17 is blocked by the

door zone detectors

8A and 8B. As a result, the door zone detection device 17 detects that the

cars

2A and 2B have moved to the vicinity of the boarding / alighting area 120.

1-2. Configuration of Elevator Control System Next, the configuration of the control system of the elevator 1 having the above-described configuration will be described with reference to FIG.
FIG. 2 is a block diagram showing a control system of the elevator 1.

As shown in FIG. 2, the tower inner control unit 6 includes a tower inner determination unit 21, a tower inner storage unit 22, a drive control unit 23, and a tower inner communication unit 24. The tower inner storage unit 22, the drive control unit 23, and the tower inner communication unit 24 are connected to the tower inner determination unit 21. Further, the tower inside determination unit 21 is connected to the hall switch 121 on each floor. Then, a call signal is transmitted from the hall switch 121 on each floor to the tower inside determination unit 21. The tower inside determination unit 21 determines the

cars

2A and 2B to be moved to the boarding / alighting area 120 based on the received call signal, and outputs the drive signal to the drive control unit 23.

The drive control unit 23 is connected to the upper pulley 4 or the lower pulley 5 which is a drive pulley. Then, the drive control unit 23 controls the drive of the upper pulley 4 or the lower pulley 5 based on the drive signal from the tower inner determination unit 21.

The tower inner communication unit 24 transmits / receives information to / from the car side communication unit 34 provided in the car side control unit 14 of each

car

2A and 2B. Then, the tower-inside communication unit 24 transmits a command signal from the tower-inside determination unit 21 to the car-side communication units 34 of the

cars

2A and 2B. Further, the tower inner communication unit 24 receives a signal from the car side communication unit 34 of each

car

2A and 2B and outputs the signal to the tower inner determination unit 21.

The car side control unit 14 has a car side determination unit 31, a car side storage unit 32, and a car side communication unit 34. The car side determination unit 31 is connected to the car position detection device 15, the car switch 16, the door zone detection device 17, the car side communication unit 34, and the car side storage unit 32. Further, the car side determination unit 31 is connected to a drive unit 41, a movement amount detection unit 42, and a movable limit detection unit 43 of the floor alignment device 13, which will be described later.

The car side determination unit 31 transmits the car position information from the car position detection device 15, the stop floor information from the in-car switch 16, the boarding / alighting area approach information from the door zone detection device 17, and the like via the car side communication unit 34. It is transmitted to the inner control unit 6. Further, the car side determination unit 31 receives the load amount information from the load amount measurement unit that measures the load amount of the car chamber 12 (not shown).

When the tower inner control unit 6 receives the boarding / alighting area approach information to the destination floor from the car side control unit 14, it controls the drive control unit 23 and stops the drive of the upper pulley 4 or the lower pulley 5. As a result, the

cars

2A and 2B can be stopped at any destination floor.

The car side determination unit 31 calculates the amount of extension of the rope 3 and the amount of movement of the car chamber 12 in the vertical direction according to the positions of the

cars

2A and 2B and the load weight. Then, the car side determination unit 31 calculates the operation command of the floor alignment device 13 according to the calculated result, and outputs the operation command to the floor alignment device 13. Further, the car side determination unit 31 stores the operation command amount in the car side storage unit 32. Further, the car side storage unit 32 stores the initial position T0 of the floor alignment device 13, which will be described later.

The floor alignment device 13 has a drive unit 41, a movement amount detection unit 42, and a movable limit detection unit 43. The drive unit 41 drives the car chamber 12 based on an operation command from the car side determination unit 31 to move the car chamber 12 in the vertical direction.

The movement amount detection unit 42 is composed of, for example, an encoder or the like, and detects the movement amount of the floor surface 12a. Then, the movement amount detection unit 42 outputs the detected movement amount to the drive unit 41 and the car side determination unit 31. Further, the car side determination unit 31 calculates the operation command amount of the floor alignment device 13 based on the movement amount of the floor surface 12a detected by the movement amount detection unit 42.

Movable limit detector 43, the upper movable limit T _MAX or movable limit in the vertical direction above the cab 12 in the bed alignment device 13, that it has reached the lower movable limit T _MIN is the movable limit downward To detect. As the movable limit detection unit 43, for example, a mechanical pressing switch is applied. Then, when the floor surface 12a presses the pressing switch, the movable limit detection unit 43 detects the upper movable limit _TMAX or the lower movable limit _TMIN .

2. Operation example 2-1. Example of Floor Alignment Operation Next, an example of floor alignment operation in the elevator 1 having the above-described configuration will be described with reference to FIGS. 3 and 4.
FIG. 3 is a flowchart showing the floor alignment operation, and FIG. 4 is an explanatory diagram showing the operation amount of the floor alignment device 13. The vertical axis in FIG. 4 indicates the amount of operation of the floor alignment device 13, and the horizontal axis indicates the position of the car 2A. Further, in the operation example shown below, an example in which the car 2A moves from the first reversing path 100C will be described.

First, as shown in FIG. 3, the tower inner control unit 6 controls the drive control unit 23 to drive the upper pulley 4 or the lower pulley 5 which is a drive pulley. As a result, the car 2A departs from the first reversing road 100C (step S11). Further, as shown in FIG. 4, when the car 2A is located on the first reversing path 100C, the operating amount of the floor alignment device 13 is 0, and the floor alignment device 13 is located at the initial position T0. .. This initial position T0 is, for example, the central point of the movable range of the floor alignment device 13.

Next, the car side control unit 14 calculates the amount of elongation of the rope 3 that fluctuates until the car 2A arrives at the destination floor (step S12). Here, as the

car

2A and 2B move, the length of the rope 3 from the

car

2A and 2B to the upper pulley 4 and the lower pulley 5 changes. Then, since the length of the rope 3 changes, the amount of elongation of the rope 3 also changes.

Next, the car side control unit 14 calculates the operation command amount of the floor alignment device 13 based on the elongation amount of the rope 3 calculated in the process of step S12. Then, the car side control unit 14 outputs the calculated operation command to the floor alignment device 13 (step S13). As a result, the floor alignment device 13 drives the drive unit 41 based on the operation command output from the car side control unit 14, and moves the car chamber 12 in the vertical direction.

Further, the car side determination unit 31 stores the operation command amount output to the floor alignment device 13 in the car side storage unit 32 (step S14). The above-mentioned processes from step S12 to step S14 are performed after the destination floor on which the car 2A stops is determined.

Further, as shown in FIG. 4, when the car 2A stops at the lowest floor, the operating amount of the floor alignment device 13 becomes the first operating amount T1. Then, the first operation amount T1 is stored in the car side storage unit 32 in the process of step S14.

When the door zone detection device 17 detects the

door zone detectors

8A and 8B on the target floor, the car side determination unit 31 outputs the boarding / alighting area approach information to the tower inner control unit 6. Then, the tower inner control unit 6 controls the drive control unit 23 and stops the drive of the upper pulley 4 or the lower pulley 5. As a result, the car 2A arrives at an arbitrary destination floor and stops (step S15). Since the car room 12 has been moved to a predetermined position by the processing from step S12 to step S13, the floor surface 12a of the car room 12 becomes the same height as the floor surface of the boarding / alighting area 120 on the target floor.

Next, the movement amount detection unit 42 of the floor alignment device 13 measures the movement amount of the floor surface 12a due to passengers getting on and off (step S16). Then, the movement amount detection unit 42 outputs the measured movement amount to the car side control unit 14.

Next, based on the movement amount measured in the process of step S16, the car side control unit 14 gives an operation command so that the step on the floor surface of the floor surface 12a of the car 2A is equal to or less than a predetermined threshold value. The amount is calculated and output to the floor alignment device 13 (step S17). As a result, the floor alignment device 13 drives the drive unit 41 based on the operation command output from the car side control unit 14, and moves the car chamber 12 in the vertical direction.

In the processes of steps S16 and S17, the amount of operation command to the floor alignment device 13 is calculated based on the amount of movement of the floor surface 12a detected by the movement amount detection unit 42, but the processing is not limited to this. .. For example, the operation command amount to the floor alignment device 13 may be calculated based on the load amount information measured by the load amount measuring unit.

Further, the car side determination unit 31 stores the operation command amount output to the floor alignment device 13 in the car side storage unit 32 (step S18).

As shown in FIG. 4, the passengers boarded the car 2A on the lowest floor, and the load weight of the car 2A changed, so that the operating amount of the floor alignment device 13 became the second operating amount T2. Then, the second operation amount T2 is stored in the car side storage unit 32 in the process of step S18.

Then, when the passengers and luggage get on and off, the door of the car 2A is closed and the car 2A moves up and down. Further, the car side control unit 14 or the tower inner control unit 6 determines whether or not the car 2A has arrived at the second reversing path 100D (step S19).

In the process of step S19, when the car side control unit 14 or the tower inner control unit 6 determines that the car 2A has not arrived at the second reversing path 100D (NO determination in step S19), the process of step S12 is performed. Return.

As shown in FIG. 4, when the car 2A moves from the bottom floor to the top floor, the length of the rope 3 up to the upper pulley and the lower pulley 5 changes as the car 2A moves up. Therefore, the amount of elongation of the rope changes, and in the processes of steps S12 and S13, the floor alignment device 13 operates according to the change in the amount of elongation of the rope 3. The operating amount of the floor alignment device 13 at this time is the third operating amount T3. Then, in the process of step S14, the third operation amount T3 is stored in the car side storage unit 32.

Also, when people and luggage get on and off on the top floor, the load weight of the car 2 changes, and the height of the floor surface 12a of the car room 12 changes. Then, the processes of steps S16 and S17 are performed, and as shown in FIG. 4, the floor alignment device 13 operates with the fourth operating amount T4 in response to the change to the height of the floor surface 12a. Further, in the process of step S18, the fourth operation amount T4 is stored in the car side storage unit 32.

Further, when the car 2A moves from the top floor to the second reversing road 100D, the amount of elongation of the rope 3 changes, and the floor alignment device 13 operates with the fifth amount of operation T5 according to the amount of extension. Then, the fifth operation amount T5 is also stored in the car side storage unit 32. Further, the first operation amount T1, the second operation amount T2, the third operation amount T3, the fourth operation amount T4, and the fifth operation amount T5 all indicate the operation amount from the initial position T0.

Further, in the process of step S19, when the car side control unit 14 or the tower inner control unit 6 determines that the car 2A has arrived at the second reversing path 100D (YES determination in step S19), the process of step S20 is performed. Do. When the car position detecting device 15 is separated from the car

position detecting bodies

7A and 7B, it can be determined that the

cars

2A and 2B have arrived at the first reversing path 100C or the second reversing path 100D.

Further, a detection sensor for detecting the

cars

2A and 2B of the first reversing path 100C and the second reversing path 100D may be provided. Based on the detection information of the detection sensor, it may be determined whether or not the

cars

In the process of step S20, when the car 2A arrives at the second reversing path 100D, the car side determination unit 31 determines whether or not the number of operation commands to the floor alignment device is equal to or less than a predetermined value. In the process of step S20, when the car side determination unit 31 determines that the number of operation commands is equal to or less than a predetermined value (YES determination in step S20), the car side determination unit 31 executes the floor alignment correction operation (step). S21).

On the other hand, in the process of step S20, when the car side determination unit 31 determines that the number of operation commands exceeds a predetermined value (NO determination in step S20), the car side determination unit 31 performs an initial position correction operation. (Step S22). Next, the processes of steps S12 to S18 are performed until the car 2A arrives at the first reversal path 100C. Then, when the car 2A arrives at the first reversing road 100C, the process of step S21 or step S22 is performed.

2-2. Floor alignment correction operation Next, the floor alignment correction operation shown in the process of step S21 described above will be described with reference to FIGS. 5 and 6.
FIG. 5 is a flowchart showing the floor alignment correction operation, and FIG. 6 is a schematic diagram showing the floor alignment correction operation.

Here, as shown in FIGS. 4 and 6, when the first car 2A arrives at the second reversing path 100D, the position of the floor alignment device 13 does not return to the initial position T0, and the floor alignment device 13 does not return to the initial position T0. May be placed at a position with an error ΔT from the initial position T0. If the floor alignment device 13 is operated in this state, the floor alignment device 13 may _{reach the upper movable limit TMAX} or the lower movable limit _TMIN , and the height of the floor surface 12a cannot be adjusted accurately. ..

This error ΔT is caused by the load weight of the second car 2B, which is the other car, and the secular change of the elongation of the rope 3. The floor alignment correction operation is an operation of returning the position of the floor alignment device 13 to the initial position T0.

As shown in FIG. 5, the car side determination unit 31 determines whether or not the total operation command amount of the floor alignment device 13 stored in the car side storage unit 32 is out of the predetermined range (step S31). The total of the operation command amounts is the total value of the first operation amount T1, the second operation amount T2, the third operation amount T3, the fourth operation amount T4, and the fifth operation amount T5. Then, this total amount becomes the error ΔT.

In the process of step S31, when the car side determination unit 31 determines that the total operation command amount is within the predetermined range (NO determination in step S31), the floor alignment correction operation is completed.

On the other hand, in the process of step S31, when the car side determination unit 31 determines that the total operation command amount is out of the predetermined range, that is, the error ΔT exceeds the preset allowable value (step S31). YES determination), the car side determination unit 31 performs the process of step S32.

In the process of step S32, as shown in FIG. 6, the car side determination unit 31 operates the floor alignment device 13 in the opposite direction by the total of the calculated operation command amounts (error ΔT). Here, the reverse direction is the direction opposite to the direction of the total movement amount, and when the total movement amount is a positive value, the floor alignment device 13 is operated in the negative direction and the total movement amount is totaled. When is a negative value, the floor alignment device 13 is operated in the positive direction. The positive direction is, for example, the upward direction, and the negative direction is, for example, the downward direction.

Therefore, the floor surface 12a of the floor alignment device 13 and the cab 12 returns to the preset initial position T0. Further, when the process of step S32 is executed, the car side determination unit 31 resets the operation amount stored in the car side storage unit 32.

This completes the floor alignment correction operation. As a result, when the car 2A departs from the first reversing path 100C or the second reversing path 100D, the floor alignment device 13 can always be operated from the initial position T0. Then, the height of the floor surface 12a of the car 2 can be accurately matched with the height of the floor surface of the target floor.

2-3. Initial Position Correction Operation Next, the initial position correction operation shown in the process of step S22 described above will be described with reference to FIGS. 7 and 8.
FIG. 7 is a flowchart showing the initial position correction operation, and FIG. 8 is a schematic view showing the initial position correction operation.

The initial position T0 of the floor alignment device 13 may shift even if the floor alignment correction operation is performed due to a measurement error of the movement amount detection unit 42, a secular change of the rope 3, or the like. The initial position correction operation is an operation of correcting the deviation of the initial position T0 to the preset initial position T0.

As shown in FIG. 7, the car side determination unit 31 controls the drive unit 41 of the floor alignment device 13 to operate the floor alignment device 13 in either the upward direction or the downward direction (step S41). Next, the car side determination unit 31 determines whether or not the floor alignment device 13 has reached the movable limit based on the detection information of the movable limit detection unit 43 (step S42). Then, the car side determination unit 31 operates the floor alignment device 13 in one direction until the floor alignment device 13 reaches the _{upper movable limit T MAX} or the lower movable limit T _{MIN, which is the movable limit.}

In the process of step S42, when the floor alignment device 13 reaches the upper movable limit _TMAX or the lower movable limit _TMIN which is the movable limit (YES determination in step S42), the car side determination unit 31 operates the floor alignment device 13. To stop. Next, the car side determination unit 31 operates the floor alignment device 13 by a predetermined amount in the direction opposite to the moving direction to the movable limit (step S43). The predetermined amount is the amount of movement from the upper movable limit _TMAX or the lower movable limit _TMIN to the preset initial position T0. This amount of operation is stored in the car side storage unit 32.

In the example shown in FIG. 8, since the floor aligning device 13 is operated in the upward direction it is moved to the upper movable limit T _MAX, the predetermined amount downward in the processing of step S43, to operate. As a result, the position of the floor alignment device 13 can be returned to the preset initial position T0, and the initial position correction operation is completed.

Further, in the process of step S42, the determination of whether or not the floor alignment device 13 has reached the movable limit is determined not by the detection information of the moving amount detecting unit 42, which is an encoder, but by a movable limit different from that of the moving amount detecting unit 42. The detection information of the detection unit 43 is used. As a result, it is possible to accurately determine that the floor alignment device 13 has reached the movable limit without being affected by the detection error by the movement amount detecting unit 42. Further, by using a mechanical sensor as the movable limit detection unit 43, the detection accuracy can be improved.

As described above, the elevator 1 of this example has a floor alignment correction operation for returning the floor alignment device 13 to the initial position T0 at a predetermined timing, and an initial correction for the initial position T0 of the floor alignment device 13 to a preset position. The position correction operation is performed. As a result, it is possible to prevent the floor alignment device 13 from reaching the _{upper movable limit TMAX} or the lower movable limit _TMIN during normal operation, and the floor alignment device 13 cannot perform the floor alignment operation. As a result, the floor alignment device 13 can be operated normally, and when the

car

2A and 2B stop on an arbitrary floor, the height of the floor surface 12a of the

car

2A and 2B is set to the floor surface of the boarding / alighting area 120. Can be matched exactly with the height of.

Further, as an example of the predetermined timing for performing the floor alignment correction operation and the initial position correction operation, the case where the

cars

2A and 2B arrive at the

reversal paths

100C and 100D is applied. As described above, when moving the

cars

2A and 2B on the reversing

roads

100C and 100D, no passengers are placed on the

cars

2A and 2B. As a result, the passenger does not feel uncomfortable when the floor surface 12a moves in the vertical direction due to the floor alignment correction operation and the initial position correction operation.

Further, the predetermined timing for performing the floor alignment correction operation and the initial position correction operation is not limited to the time when the

cars

2A and 2B arrive at the

reversal paths

100C and 100D. As the predetermined timing, for example, a time zone in which there are no passengers using the elevator 1 such as at night or on holidays may be applied. Alternatively, a person detection sensor for detecting the presence or absence of a passenger is provided in the car room 12 of the

cars

2A and 2B, and based on the passenger presence / absence information of the person detection sensor, the car side control unit indicates that the passenger is not in the

cars

2A and 2B. It may be carried out when 14 judges.

Further, an example of applying the car side control unit 14 as a control unit for controlling the floor alignment correction operation and the initial position correction operation has been described, but the present invention is not limited to this, and the control unit is the tower inner control unit 6. May be applied.

The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention described in the claims.

In the above-described embodiment, a multicar elevator having two cars, a first car 2A and a second car 2B, is applied, but the number of cars is not limited to two. Three or more cars may be provided.

Further, as a multi-car elevator, a circulation type elevator in which the

cars

2A and 2B move up on the first movement path 100A and the

cars

2A and 2B move down on the second movement path 100B may be used. Alternatively, the

cars

2A and 2B may move the first moving path 100A and the second moving path 100B in both the ascending and descending directions. Further, an elevator in which the first car 2A moves up and down only on the first movement path 100A, and the second car 2B connected to the first car 2A via a rope 3 moves up and down only on the second movement path 100B. It can also be applied to.

Also, as an elevator, it can be applied to an elevator in which two car rooms are installed in the upper and lower parts in the vertical direction inside one car frame, so-called double deck elevator.

Although words such as "parallel" and "orthogonal" have been used in the present specification, these do not mean only strict "parallel" and "orthogonal", but include "parallel" and "orthogonal". Further, it may be in a "substantially parallel" or "substantially orthogonal" state within a range in which the function can be exhibited.

1 ... Elevator, 2A, 2B ... Car, 3 ... Rope, 4 ... Upper pulley, 5 ... Lower pulley, 6 ... Tower inside control unit (control unit), 7A, 7B ... Car position detector, 8A, 8B ... Door zone Detector, 11 ... Cage frame, 12 ... Cage chamber, 12a ... Floor surface, 13 ... Floor alignment device, 14 ... Cage side control unit (control unit), 15 ... Cage position detection device, 16 ... Cage switch, 17 ... Door zone detection device, 21 ... Tower inside determination unit, 22 ... Tower inside storage unit, 23 ... Drive control unit, 24 ... Tower inside communication unit, 31 ... Car side determination unit, 32 ... Car side storage unit, 34 ... Car side communication Unit, 41 ... Drive unit, 42 ... Movement amount detection unit, 43 ... Movable limit detection unit, 100A, 100B ... Movement path, 100C, 100D ... Reverse path, 120 ... Boarding / alighting area, T0 ... Initial position, _TMAX ... Upper movable Limit (movable limit), T _MIN ... Lower movable limit (movable limit)

Claims

The basket frame connected to the rope and
The car room placed in the car frame and
A floor alignment device that supports the car chamber so as to be movable in the vertical direction and adjusts the height of the floor surface of the car chamber.
A control unit that controls the drive of the floor alignment device is provided.
The control unit is an elevator that performs a floor alignment correction operation that returns the position of the floor alignment device to the initial position at a predetermined timing.
The control unit
It has a storage unit that stores the amount of movement of the floor alignment device until the floor alignment correction operation is performed.
The elevator according to claim 1, wherein in the floor alignment correction operation, the position of the floor alignment device is returned to the initial position based on the movement amount stored in the storage unit.
The movement amount stored in the storage unit is a movement amount with respect to the initial position.
The second aspect of claim 2, wherein the control unit calculates the total of the movement amounts in the floor alignment correction operation, and moves the floor alignment device in the direction opposite to the direction of the total movement amount by the calculated total. Elevator.
The elevator according to claim 1, wherein the control unit performs an initial position correction operation for correcting the initial position of the floor alignment device to a preset initial position at a predetermined timing.
In the initial position correction operation, the control unit operates the floor alignment device to the movable limit, and operates the floor alignment device by a predetermined amount in a direction opposite to the moving direction of the floor alignment device to the movable limit. The elevator according to claim 4.
The floor alignment device is
A movement amount detection unit that detects the movement amount of the floor alignment device, and
It has a movable limit detection unit that detects that the floor alignment device has reached the movable limit.
The elevator according to claim 5, wherein the control unit determines that the floor alignment device has reached the movable limit based on the detection information of the movable limit detection unit in the initial position correction operation.
The control unit executes the floor alignment correction operation when the number of operation commands to the floor alignment device is equal to or less than a predetermined value, and when the number of operation commands to the floor alignment device exceeds a predetermined value, the control unit performs the floor alignment correction operation. The elevator according to any one of claims 4 to 6, which performs an initial position correction operation.
The elevator according to any one of claims 1 to 7, wherein the predetermined timing is when a passenger is not in the car room.
It is equipped with a plurality of cars that move up and down the movement path provided in the building structure and are connected via the rope.
The elevator according to any one of claims 1 to 8, wherein the car has the car frame, the car room, and the floor alignment device.
The building structure is provided with a reversing path in which the ascending / descending movement of the car is reversed from ascending to descending or descending to ascending.
The elevator according to claim 9, wherein the predetermined timing is when the car moves on the reversing road.