JP2023181021A - double deck elevator - Google Patents

Abstract

An object of the present invention is to provide a double deck elevator that can reduce the number of installation steps.
[Solution] A double system in which an outer car frame 12 is raised and lowered to a target stop position within a hoistway 36, and an upper car 14 and a lower car 16 provided vertically within the outer car frame 12 land on their respective destination floors. In the deck elevator 10, the upper car detection means 50 detects that the upper car 14 has landed on the destination floor, the lower car detection means 52 detects that the lower car 16 has landed on the destination floor, and the upper car detection means 50 detects that the upper car 14 has landed on the destination floor. The main control device 58 and the sub-control device 66 function as target stop position setting means for setting the position at which both the means 50 and the lower car detection means 52 detect landing at the same time as the target stop position, and The outer car frame 12 is raised and lowered to a target stop position set by a target position setting means.
[Selection diagram] Figure 1

Description

The present invention relates to a double-deck elevator, and particularly to a double-deck elevator in which an upper car and a lower car are provided within an outer car frame.

Double-deck elevators, which have a two-story structure with an upper car and a lower car installed in an outer car frame that ascends and descends in the hoistway, have a lower transport capacity than elevators with a single car. Excellent. In addition, less installation space is required to obtain the same transportation capacity. For this reason, it is being introduced into large-scale, high-rise buildings.

The outer car frame is connected to the counterweight by a main rope, and the main rope is hung on a sheave of a hoist installed in a machine room above the hoistway. Then, by driving a hoist motor constituting the hoist and rotating the sheave, the outer car frame, and eventually each of the upper and lower cars, moves up and down in the hoistway.

In the above-mentioned lifting control, in order to raise and lower the outer car frame to the target stop position corresponding to the destination floor of each of the upper and lower cars, for example, a photo sensor, which is a type of proximity sensor, and multiple photosensor detection targets are used. A light shielding plate is used (Patent Document 1). The photosensor is attached to the outer car frame. On the other hand, each of the plurality of light shielding plates is installed in the hoistway in correspondence with each of the target stop positions.

During normal operation, the hoisting machine motor is controlled to raise and lower the outer car frame, and finally it is stopped at the position where the proximity sensor detects the light shielding plate corresponding to one target stop position. The upper and lower cars are each stopped at their destination floor.

In addition, in order to detect whether each of the upper and lower cars has accurately landed on the corresponding destination floor, a photo sensor is installed in each of the upper and lower cars, corresponding to each destination floor in the hoistway. A light-shielding plate is installed at the location.

After the outer car has been raised and lowered to the target stop position and stopped, the car door is opened only after it is confirmed that the photo sensors installed in the upper and lower cars have detected the light shielding plate on the destination floor. It is designed to be opened and closed.

Patent No. 6658240 International Publication No. 2012/131755

By the way, as mentioned above, the light shielding plates used to control the elevation and descent of the outer car frame are provided at each target stop position of the outer car frame, so it takes a lot of time to install them, which reduces the number of man-hours required to install the double-deck elevator. is affecting.

In view of the above problems, the present invention aims to provide a double deck elevator that can reduce the number of installation steps.

In order to achieve the above object, the double deck elevator according to the present invention raises and lowers an outer car frame to a target stop position within the hoistway, and raises and lowers an upper car and a lower car provided vertically within the outer car frame. A double-deck elevator for landing on each destination floor, comprising an upper car detection means for detecting that the upper car has landed on the destination floor, and a lower car detecting means for detecting that the lower car has landed on the destination floor. and a target stop position setting means for setting the target stop position to a position where both the upper car detection means and the lower car detection means simultaneously detect landing, the target position setting means The outer car frame is raised and lowered to a target stop position set by.

Further, the upper car detection means includes a first proximity sensor provided on the upper car, and a plurality of first detected objects that are installed at each destination floor of the upper car and are detected by the first proximity sensor. The lower car detection means includes a second proximity sensor provided in the lower car, and a plurality of second detected objects that are installed at each destination floor of the lower car and are detected by the second proximity sensor. and a car interval adjustment means for adjusting the car interval in the vertical direction between the upper car and the lower car to the floor heights of two destination floors, and a car interval adjustment means that vertically displaces within the outer car frame by the car interval adjustment means. absolute position detection means for detecting the absolute positions of the upper car and the lower car in the vertical direction with respect to the outer car frame; When the vertical lifting position of the upper car or the lower car in the hoistway is specified by detecting either the first detected object or the second detected object, the specified lifting/lowering position is determined. and outer car frame lifting/lowering position specifying means for specifying the lifting/lowering position of the outer car frame from the absolute position detected by the absolute position detecting means at the specified time of the specified car. The present invention is characterized in that the raising and lowering of the outer car frame is controlled by referring to the raising and lowering position of the outer car frame specified by the outer car frame raising and lowering position specifying means.

Further, the car interval adjustment means adjusts the car interval while the outer car frame is being raised or lowered from the destination floor where the upper car and the lower car are respectively landed to the next destination floor. Features.

According to the double deck elevator according to the present invention having the above configuration, the target stopping position of the outer car frame is set using the upper car detection means and the lower car detection means. As a result, not only the photosensor provided in the outer car frame, which is included in the double-deck elevator described in Patent Document 1, but also the plurality of light-shielding plates detected by the photosensor become unnecessary. As a result, the number of steps required to install the double-deck elevator can be reduced by reducing the number of steps needed to install the plurality of light shielding plates.

FIG. 1 is a diagram showing a schematic configuration of a double deck elevator according to an embodiment. (a) is a plan view, and (b) is a side view, showing a schematic structure of a photosensor and a light-shielding plate that constitute the upper car detection means and the lower car detection means provided in the double-deck elevator. FIG. 2 is a block diagram showing a hoisting machine, a main control device that controls the hoisting machine, and the like, and a sub-control device that controls the moving unit, the moving unit, and the like. (a) is a diagram showing a lift table, and (b) is a diagram showing a car interval information table. (a) is a diagram showing a state in which the lower car has landed on the lowest floor, and (b) is a diagram showing the outer car frame being raised and lowered toward the target stop position. It is a figure showing the schematic structure of the double deck elevator concerning other embodiments.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a double deck elevator according to the present invention will be described with reference to the drawings.
〔overall structure〕
FIG. 1 shows a schematic configuration of a double deck elevator 10 according to an embodiment. The double deck elevator 10 includes an upper beam 12A, a lower beam 12B, and two vertical frames 12C and 12D that connect the upper beam 12A and the lower beam 12B, and is approximately long in the vertical direction (in the vertical direction) when viewed from the front. It has a rectangular outer car frame 12.

Inside the outer car frame 12, an upper car 14 and a lower car 16 are provided side by side in the vertical direction.

A driven sheave 18 is attached to the outer car frame 12, and one end of a wire rope 20 that is hung over the driven sheave 18 above the upper car 14 and folded back is connected to the upper car 14, and the other end is connected to the upper car 14. is connected to the lower car 16. As a result, the upper car 14 is suspended from one end of the wire rope 20 hung on the driven sheave 18, and the lower car 16 is suspended from the other end. The driven sheave 18 is a sheave that rotates following the wire rope 20 that runs as the lower car 16 moves up and down, as will be described later. Note that the upper car 14 and the lower car 16 are guided so as to be movable in the vertical direction by a pair of guide rails (not shown) installed between the upper beam 12A and the lower beam 12B.

A moving unit 22 for moving the lower car 16 in the vertical direction is attached below the lower car 16 in the outer car frame 12. The moving unit 22 includes a screw jack 24 (hereinafter simply referred to as "jack 24") having an actuator 24A that moves up and down, and a motor 26 that drives the jack 24, with the upper end of the actuator 24A facing downward. It is connected to the lower end of the car 16.

The motor 26 is provided with a rotary encoder 27 (FIG. 3) that detects the rotation angle of its output shaft, and the rotation angle (number of rotations) of the output shaft is controlled based on the output result from the rotary encoder 27. By doing so, it is possible to control the displacement amount of the actuator 24A in the vertical direction.

When the jack 24 is driven to move the lower car 16 upward, the upper car 14, which is connected to the lower car 16 by the wire rope 20 hung on the driven sheave 18, moves the distance the lower car 16 moves due to its own weight. move downward the same distance. As a result, the interval between the upper car 14 and the lower car 16 in the vertical direction (hereinafter referred to as "car interval") can be shortened.

On the other hand, when the jack 24 is driven to move the lower car 16 downward, the upper car 14 is pulled up, so that the distance between the cars can be increased.

In this way, the moving unit 22 functions as a car interval adjusting means for adjusting the interval between the cars by moving the lower car 16 in the vertical direction.

Here, the car interval refers to the distance (D) in the vertical direction between the floor surface 16A of the lower car 16 and the floor surface 14A of the upper car 14. In this example, the car intervals D to be adjusted are, for example, four types: D1, D2, D3, and D4. That is, in a building in which the double-deck elevator 10 is installed, there are four different floor heights between the two floors on which the lower car 14 and the upper car 16 land at the same time.

In order to accurately adjust the car interval D, this embodiment includes absolute position detection means for detecting the absolute positions of the upper car 14 and the lower car 16 in the vertical direction with respect to the outer car frame 12.

As this absolute position detection means, the double deck elevator 10 includes an absolute type magnetic linear scale 28 (hereinafter referred to as "magnetic scale 28").

The magnetic scale 28 is connected to a magnetic tape 30 that is a recording tape on which absolute position (distance) information from one end to the other end is recorded as a magnetic pattern (magnetic scale) with a resolution of, for example, 0.5 mm. It includes two reading units 32 and 34 that read the magnetic scale from the tape 30. As this magnetic scale 28, for example, a known scale such as "Absolute Magnetic Scale LIMAX Series" manufactured by Ergo Electronic Co., Ltd. can be used.

The magnetic tape 30 is attached to the outer car frame 12 so that its length direction is in the vertical direction. In this example, it is stretched between the upper beam 12A and the lower beam 12B.

In this example, the magnetic tape 30 is attached in such a direction that the scale is graduated from the bottom to the top (that is, the value on the scale increases toward the top). Further, in this example, the lower beam 12B is installed so that the position is on the "0" scale. Note that the magnetic tape 30 may be attached to the outer car frame 12 in the opposite direction.

The reading unit 32 is fixed to the upper car 14, and the other reading unit 34 is fixed to the lower car 16. Note that the fixing positions of the reading units 32 and 34 in the vertical direction with respect to the upper car 14 and the lower car 16 are arbitrary. The fixed positions of the reading units 32 and 34 with respect to the upper car 14 and the lower car 16 are such that when the upper car 14 and the lower car 16 are moved up and down by the moving unit 22, the reading units 32 and 34 are fixed to the magnetic tape 30. Any position is acceptable as long as it can move along the magnetic tape 30 and read the magnetic scale recorded on the magnetic tape 30.

In the magnetic scale 28 provided as described above, the value of the magnetic scale read by the reading unit 32 indicates the absolute position of the upper car 14 in the vertical direction with respect to the outer car frame 12 at the time of reading. The value of the magnetic scale read indicates the absolute position of the lower car 16 in the vertical direction with respect to the outer car frame 12 at the time of reading. That is, the magnetic scale 28 can detect the absolute positions of the upper car 14 and the lower car 16 in the vertical direction with respect to the outer car frame 12.

Furthermore, the difference (hereinafter referred to as "scale difference") between the values of the magnetic scale read by the reading unit 32 and the reading unit 34 (hereinafter referred to as "scale value") corresponds one-to-one with the car interval D. Therefore, the car interval D is used as an index. As shown in FIG. 1, when the reading units 32 and 34 are fixed at the same height from the floor surfaces 14A and 16A of the upper and lower cars 14 and 16, respectively, the scale difference is equal to the car interval D. . The scale values read by the reading units 32 and 34 are referred to, and the car interval D is adjusted to the floor height of the destination floor, as will be described later.

As described above, a machine room 38 is provided above the hoistway 36 in which the outer car frame 12, in which the upper car 14, the lower car 16, etc. are provided, goes up and down. is installed. The hoisting machine 40 includes a hoisting machine motor 40A (FIG. 3), a sheave 40B provided on an output shaft (not shown) of the hoisting machine motor 40A, and a rotary encoder 40C provided coaxially with the output shaft. Including etc.

A deflection wheel 42 is installed adjacent to the hoist 40, and a main rope 44 is hung between the sheave 40B of the hoist 40 and the deflection sheave 42.

The outer car frame 12 is connected to one end of the main rope 44, and the counterweight 46 is connected to the other end.

In the above configuration, when the sheave 40B is rotated using the hoist motor 40A (FIG. 3) as a drive source, the outer car frame 12, the upper car 14, the lower car 16, and the counterweight 46 move toward the hoistway. 36 in opposite directions.

An upper car detection means 50 for detecting whether the upper car 14 has landed on the destination floor after going up and down, and a lower car detection means 52 for detecting whether the lower car 16 has landed on the destination floor are provided. It is being

The upper car detection means 50 includes a pair of photosensors 54A and 55A fixed to the upper car 14 and a light shielding plate 56A, which is an object to be detected, which is fixed to the side wall 36A of the hoistway 36 and is detected by the photosensors 54A and 55A. including.

The lower car detection means 52 includes a pair of photosensors 54B and 55B fixed to the lower car 16 and a light shielding plate 56B which is an object to be detected by the photosensors 54B and 55B fixed to the side wall 36A of the hoistway 36. including.

Each of the photosensors 54A, 54B and each of the photosensors 55A, 55B have basically the same configuration, so if there is no need to distinguish between them, the alphabetical subscripts (A, B) will be omitted in the description. do. Further, the same applies to the light shielding plates 56A and 56B.

FIG. 2(a) shows a plan view of the photosensors 54 and the light shielding plate 56, and FIG. 2(b) shows a side view of the photosensors 54, 55 and the light shielding plate 56, respectively.

The photosensor 54 is a transmissive photosensor in which a light emitting element 542 and a light receiving element 544 are provided facing each other, as shown in FIG. 2(a). It is configured to detect the relatively intruding light shielding plate 56.

The photosensor 55 is the same sensor as the photosensor 54, and is a transmissive photosensor configured to detect a light shielding plate 56 that enters a region where a light emitting element and a light receiving element (not shown) face each other.

Returning to FIG. 1, the fixed positions of each of the light shielding plates 56A and 56B in the vertical direction will be described.

The light shielding plate 56A is fixed at a position where it is simultaneously detected by the photosensors 54A and 55A when the upper car 14 has landed on the destination floor.

The light shielding plate 56B is fixed at a position where it is simultaneously detected by the photosensors 54B and 55B when the lower car 16 lands on the destination floor.

Therefore, depending on whether or not the photosensors 54A, 55A and photosensors 54B, 55B detect the light shielding plates 56A, 56B, respectively, it is determined whether each of the upper car 14 and the lower car 16 has landed on the destination floor. can do.

The light shielding plate 56A and the light shielding plate 56B are provided as a pair for each of two destination floors where the upper car 14 and the lower car 16 land at the same time. That is, the pair is provided for each target stop position of the outer car frame 12 in the vertical direction within the hoistway 36.

The operation of the double deck elevator 10 having the above configuration is controlled by the main controller 58 and the sub-control device 66.

The main control device 58 is installed in the machine room 38 and controls the drive of the hoisting machine motor 40A (FIG. 3) of the hoisting machine 40 and the like. The main controller 58 controls the rotation of the hoist motor 40A based on the output value (rotation angle) from the rotary encoder 40C of the hoist 40 to raise and lower the outer car frame 12. The sub-control device 66 is installed in the outer car frame 12. The sub-control device 66 drives and controls the moving unit 22 to adjust the car interval D.

As shown in FIG. 3, the main control device 58 has a configuration in which a CPU 60 is connected to a RAM 62 and a ROM 64. By executing various control programs stored in the ROM 64, the CPU 60 centrally controls the hoisting machine motor 40A, etc., to smoothly operate the hoistway 36 of the outer car frame 12 (upper car 14, lower car 16). Realizes operation by lifting and lowering operations etc. The RAM 62 is used as a work memory when the CPU 60 executes various control programs.

The ROM 64 has an elevating table 640, as shown in FIG. 4(a). The lift table 640 is a table that stores target rotation angles of the rotary encoder and car interval identification information in association with each other for each set of floors (destination floors) on which the lower car 16 and the upper car 14 land at the same time. Each of the associations is identified by an ID (000, 001, 002, . . . ).

The target rotation angle is referred to by the CPU 60 when controlling the elevation of the outer car frame 12. The CPU 60 rotates the hoist motor 40A until the output value (rotation angle) from the rotary encoder 40C matches the target rotation angle (one of E0, E1, E2,...) corresponding to the destination floor. , the hoist motor 40A is stopped in a matched state. As a result, the outer car frame 12 is stopped at a position (target stop position) in the vertical direction within the hoistway 36 where the upper car 14 and the lower car 16 can simultaneously land on their respective destination floors. Become. Since the target rotation angle has a one-to-one correspondence with the target stop position of the outer car frame 12 in the vertical direction within the hoistway 36, the target rotation angle is nothing but the target stop position. A method for setting the target rotation angle will be described later.

The car interval identification information d1, d2, d3, and d4 specify the car intervals D1, D2, D3, and D4, respectively. For example, if the destination floor of the lower car 16 is 1 and the destination floor of the upper car 14 is 2, the car interval D should be adjusted to D1, so it corresponds to ID = 000 of the car interval identification information of the elevator table 640. "d1" is stored in the column.

The sub-control device 66 has a CPU 68 and a ROM 70 and a RAM 72 connected to the CPU 68, as shown in FIG. The ROM 70 stores various programs executed by the CPU 68, and also has tables and storage areas for storing various information.

The RAM 72 is used as a work memory when the CPU 68 executes various programs, and also has various storage areas.

The ROM 70 has a car interval information table 700, as shown in FIG. 4(b). The car interval information table 700 stores car interval identification information d1, d2, d3, and d4 and corresponding scale differences ΔS1, ΔS2, ΔS3, and ΔS4 in association with each other. The scale differences ΔS1 to ΔS4 are hereinafter referred to as "standard scale differences." Each of the reference scale differences ΔS1 to ΔS4 has an allowable width in consideration of the required car spacing accuracy. Upon receiving a car interval adjustment command including car interval identification information (any of d1, d2, d3, d4) from the main controller 58, the CPU 68 reads the corresponding reference scale difference (ΔS1, ΔS2) from the car interval information table 700. , ΔS3, ΔS4). Then, the CPU 68 controls the moving unit 22 to move the upper car 14 and the lower car 16 in the vertical direction so that the scale difference obtained from the scale values read by the reading units 32 and 34 falls within the range of the reference scale difference. let As a result, the car interval D is adjusted to the car interval (any one of D1 to D4) that matches the floor heights of the two destination floors, the upper and lower.

[Target stop position setting]
Each of the target rotation angles in the lift table 640 is stored (set) during the data acquisition operation. An example of the data acquisition operation will be described below.

The main controller 58 is manually operated to position the outer car frame 12 at or near the lowest floor (the position corresponding to ID=000 of the car interval identification information on the lift table 640). Further, the sub-control device 66 is manually operated to adjust the car interval to D1.

In this state, the main controller 58 is caused to start a data acquisition operation (to execute a data acquisition operation program).
First, the main controller 58 controls the hoisting machine 40 until the photosensors 54A and 55A simultaneously detect the light shielding plate 56A, and the outer car frame 12 until the photosensors 54B and 55B simultaneously detect the light shielding plate 56B. Raise and lower within a small range. The main controller 58 stops the outer car frame 12 at a position where the photosensors 54A and 55A simultaneously detect the light shielding plate 56A and the photosensors 54B and 55B simultaneously detect the light shielding plate 56B, and sets the ID of the lifting table 640 to 000. The target rotation angle corresponding to is reset to 0 (E0).

Next, the main controller 58 slowly raises the outer car frame 12, while instructing the sub controller 66 to adjust the car interval until the outer car frame 12 reaches the position corresponding to the next ID=001. An instruction is given to change the car interval to d2 corresponding to the next ID=001.

When the photosensors 54A and 55A simultaneously detect the light shielding plate 56A corresponding to ID=001, and the photosensors 54B and 55B simultaneously detect the light shielding plate 56B corresponding to ID=001, the rotary encoder 40C outputs an output when detected. The output value (rotation angle E1) corresponding to ID=001 is stored in the lift table 640.

While the main controller 58 continues to slowly raise the outer car frame 12, the main controller 58 instructs the sub controller 66 to increase the car interval by the time the outer car frame 12 reaches the position approximately corresponding to the next ID=002. to the car interval d2 corresponding to the next ID=002 (in this example, the car interval remains D2, so it is not changed).

When the photosensors 54A and 55A simultaneously detect the light-shielding plate 56A corresponding to ID=002, and the photosensors 54B and 55B simultaneously detect the light-shielding plate 56B corresponding to ID=002, the rotary encoder 40C outputs an output when detected. The output value (rotation angle E2) corresponding to ID=002 is stored in the lift table 640.

Thereafter, the above process is repeated until the light shielding plates 56A, 56B corresponding to the final ID are detected, and the data acquisition operation (data acquisition operation program) is ended. Through the data acquisition operation, the position where both the upper car detection means 50 and the lower car detection means 52 simultaneously detect landing is stored (set) in the lift table 640 as a target rotation angle, which is the target stop position. That is, the main controller 58 and the sub-control device 66 set the target rotation angle (target stop position) to the position where both the upper car detection means 50 and the lower car detection means 52 simultaneously detect landing. It functions as a means.

As described above, according to the double deck elevator 10 according to the embodiment, the target stopping position of the outer car frame 12 is set using the upper car detection means 50 and the lower car detection means 52. As a result, not only the photosensor provided in the outer car frame, which is included in the double-deck elevator described in Patent Document 1, but also the plurality of light-shielding plates detected by the photosensor become unnecessary. As a result, the number of steps required to install the double-deck elevator can be reduced by reducing the number of steps needed to install the plurality of light shielding plates.

Furthermore, in the double-deck elevator described in Patent Document 1, the wire rope that suspends the upper car and lower car stretches due to aging, and the upper car and lower car move downward relative to the outer car frame. When the wire rope is displaced, processing is performed to obtain the amount of elongation of the wire rope, and the target stopping position of the outer car frame is corrected by a distance corresponding to the obtained amount of elongation. On the other hand, in the double-deck elevator 10 according to the embodiment, for the purpose of stopping the outer car frame at the target stop position, the process of acquiring the amount of elongation and the process of correcting the target stop position are not necessary, and the data is periodically By performing the acquisition operation, even if the wire rope is stretched, it will be updated to an appropriate target stopping position.

Note that the data acquisition operation is performed when the double deck elevator 10 is installed in the building and periodically thereafter, and the target rotation angle of the lifting table 640 is updated in a timely manner.

[Elevation control of outer car frame]
During normal operation of the double-deck elevator 10, in order to speedily and smoothly accelerate, maintain constant speed, and decelerate the outer car frame 12 and move it up and down to the target stop position, the vertical position of the outer car frame 12 being raised and lowered is grasped and the winding is performed. Control of the upper machine 40 (rotation control of the hoist motor 40A) is performed.

In order to grasp the vertical position of the outer car frame 12 in the hoistway 36 as it moves up and down, the upper car detection means 50 or the lower car detection means 52 is used. Although any detection means may be used, an example in which the lower car detection means 52 is used will be described here.

FIG. 5A shows a state where the lower car 16 is on the first floor and the upper car 14 is on the second floor, which is the position of ID=000. That is, the target rotation angle in the elevation control of the outer car frame 12 is at the position E0, and the car interval is adjusted to D1 (FIG. 4(a)).

Here, in this example, the vertical position of the outer car frame 12 is based on the lower beam 12B. Further, the vertical position of the lower car 16 with respect to the outer car frame 12 is the distance from the lower beam 12B to the mounting position of the photosensors 54B and 55B (the intermediate position between the photosensors 54B and 55B). The distance and height in the vertical direction are values converted into the rotation angle (rotation amount) of the rotary encoder 40C.

Further, the heights of the light shielding plates 56 from the lower beam 12B of the outer car frame 12 in the above state shown in FIG. 5(a) are defined as H1, H2, H3, . . . . In addition, as shown in FIG. 5(b), the mounting positions of the photosensors 54B and 55B (absolute position in the vertical direction of the lower car 16 with respect to the outer car frame 12) obtained based on the read value of the reading unit 34 are Tx shall be.

5(b) regarding identification of the lifting position of the outer car frame 12 in the vertical direction within the hoistway 36 during the raising and lowering of the outer car frame 12 from the state shown in FIG. 5(a) to the next target stop position. ).

Photo sensors 54B and 55B provided in the rising outer car frame 12 detect the light shielding plate 56 one after another. For example, when the light shielding plate 56 installed at the height H5 is detected, it can be determined that the lower car 16 is at the height H5 in the hoistway 36 at that time.

On the other hand, Tx, which is the absolute position of the lower car 16 in the vertical direction with respect to the outer car frame 12, is obtained from the read value of the reading unit 34 when the photosensors 54B and 55B detect the light shielding plate 56. Then, the vertical position Ex of the outer car frame 12 is calculated using the formula Ex=H5-Tx.

That is, when the vertical lifting position (H5) of the lower car 16 in the hoistway 36 is specified by the photosensors 54B and 55B detecting the light shielding plate 56 while the outer car frame 12 is being lifted and lowered, the corresponding The vertical position (Ex) of the outer car frame 12 is specified from the specified vertical position (H5) and the vertical absolute position (Tx) of the lower car 16 with respect to the outer car frame 12 at the specified time point ( Ex=H5-Tx).

Every time the light shielding plate 56 is detected by the photosensors 54B and 55B, the above processing is performed to grasp the ascending and descending position of the outer car frame 12 at that time, and by referring to the ascending and descending position, the transition from acceleration to constant velocity is performed. Elevating and lowering control of the outer car frame 12 is performed to determine the timing and the timing of transition from constant speed to deceleration.

Note that which of the plurality of light shielding plates 56 is detected by the photosensors 54B and 55B can be recognized as follows, for example. In the state shown in FIG. 5(a), the internal counter of the CPU 60 of the main controller 58 is set to "1", and from then on, every time the light shielding plate 56 is detected during ascending and descending, the counter is counted up, and during descending. Each time a light shielding plate 56 is detected, it is counted down and by referring to the count value of the internal counter when a light shielding plate 56 is detected, it is possible to recognize which light shielding plate 56 has been detected.

As explained above, according to the double deck elevator 10 according to the embodiment, while raising and lowering the outer car frame 12 from one target stop position to the next target stop position, the car interval is adjusted according to the next destination floor. Even if the car is inside the hoistway 36, it is possible to specify the elevating position of the outer car frame 12 in the hoistway 36 from the elevating position of the lower car 16 in the hoistway 36 and the absolute position of the lower car 16 with respect to the outer car frame 12. The specified lifting position of the outer car frame 12 is referenced to control the lifting and lowering of the outer car frame 12 (rotation control of the hoist motor 40A of the hoist 40).

In the above example, the lower car detection means 52 is used to identify the lifting position of the outer car frame 12 in the hoistway 36, but the invention is not limited to this, and the upper car detection means 50 may also be used. I do not care.

Although the double-deck elevator according to the present invention has been described above based on the embodiments, it goes without saying that the present invention is not limited to the above-described embodiments, and, for example, the following embodiments may also be adopted.

(1) The double deck elevator 10 according to the embodiment is a jack-type double deck elevator in which one of the upper car 14 and the lower car 16 (in this example, the lower car 16) is moved in the vertical direction by the jack 24. However, the double deck elevator 80 shown in FIG. This is a traction-type double-deck elevator that changes the car spacing by rotating a drive sheave 82A with a motor 82B.

The double-deck elevator 80 has substantially the same configuration as the double-deck elevator 10 (FIG. 1), except that the driving method for changing the car interval between the upper car 14 and the lower car 16 is different. Therefore, in FIG. 6, components that are substantially the same as those of the double deck elevator 10 shown in FIG.

(2) In the above embodiment, the magnetic scale 28 is used as a detection means for detecting the absolute positions of the upper car 14 and the lower car 16 in the vertical direction with respect to the outer car frame 12. However, the present invention is not limited to this, and for example, the following You may also use Note that details of the use of the following detection means are described in Patent Document 1, so the details will be omitted here and the detection means will only be listed.
(a) Optical one-dimensional code position (distance) sensor (b) Optical two-dimensional code position (distance) sensor (c) Laser distance sensor (d) Ultrasonic distance sensor (e) Infrared distance sensor

INDUSTRIAL APPLICABILITY The present invention can be suitably used in a double deck elevator in which an upper car and a lower car are provided within an outer car frame.

10, 80 double deck elevator 12 outer car frame 14 upper car 16 lower car 50 upper car detection means 52 lower car detection means 58 main controller 66 sub-control device

In order to achieve the above object, the double deck elevator according to the present invention raises and lowers an outer car frame to a target stop position within the hoistway, and raises and lowers an upper car and a lower car provided vertically within the outer car frame. A double-deck elevator for landing on each destination floor, comprising an upper car detection means for detecting that the upper car has landed on the destination floor, and a lower car detecting means for detecting that the lower car has landed on the destination floor. A car detecting means; and a target stop position setting means for setting a position at which both the upper car detecting means and the lower car detecting means simultaneously detect landing as the target stop position during data acquisition operation . Further, the outer car frame is raised and lowered to a target stop position set by the target stop position setting means.

Further, the upper car detection means includes a first proximity sensor provided on the upper car, and a plurality of first detected objects that are installed at each destination floor of the upper car and are detected by the first proximity sensor. The lower car detection means includes a second proximity sensor provided in the lower car, and a plurality of second detected objects that are installed at each destination floor of the lower car and are detected by the second proximity sensor. and a car interval adjustment means for adjusting the car interval in the vertical direction between the upper car and the lower car to the floor heights of two destination floors, and a car interval adjustment means that vertically displaces within the outer car frame by the car interval adjustment means. absolute position detection means for detecting the absolute positions of the upper car and the lower car in the vertical direction with respect to the outer car frame; When the vertical position of the upper car or the lower car in the hoistway is determined by detecting either the first detected object or the second detected object, the identified object is detected. outer car frame lifting/lowering position specifying means for specifying the lifting/lowering position of the outer car frame from the lifting position detected by the absolute position detecting means at the specified time point of the specified car; and controlling the elevation of the outer car frame by referring to the elevation position of the outer car frame specified by the outer car frame elevation position specifying means.

Claims (3)

A double-deck elevator that raises and lowers an outer car frame to a target stop position in a hoistway, and causes an upper car and a lower car provided vertically within the outer car frame to land on their respective destination floors,
upper car detection means for detecting that the upper car has landed on a destination floor;
lower car detection means for detecting that the lower car has landed on a destination floor;
target stop position setting means for setting a position at which both the upper car detection means and the lower car detection means simultaneously detect landing as the target stop position;
has
A double deck elevator characterized in that the outer car frame is raised and lowered to a target stop position set by the target position setting means. The upper car detection means includes a first proximity sensor provided on the upper car, and a plurality of first detected objects that are installed at each destination floor of the upper car and are detected by the first proximity sensor. ,
The lower car detection means includes a second proximity sensor provided on the lower car, and a plurality of second detected objects that are installed at each destination floor of the lower car and are detected by the second proximity sensor. ,
car interval adjustment means for adjusting the car interval in the vertical direction between the upper car and the lower car to the floor heights of the upper and lower two destination floors;
Absolute position detection means for detecting the absolute positions of the upper car and the lower car in the vertical direction with respect to the outer car frame, which are vertically displaced within the outer car frame by the car interval adjustment means;
While the outer car frame is being raised or lowered, either the first sensor or the second sensor detects either the first detected object or the second detected object, so that the upper car frame or the lower car frame When the vertical lifting position of the car in the hoistway is specified, based on the specified lifting position and the absolute position detected by the absolute position detecting means at the specified time of the specified car, Outer car frame lifting/lowering position specifying means for specifying the lifting/lowering position of the outer car frame;
has
2. The double-deck elevator according to claim 1, wherein the raising and lowering of the outer car frame is controlled by referring to the raising and lowering position of the outer car frame specified by the outer car frame raising and lowering position specifying means. The car interval adjusting means is characterized in that the car interval is adjusted while the outer car frame is being moved up and down from the destination floor where the upper car and the lower car have respectively landed to the next destination floor. The double deck elevator according to claim 2.