JP6079323B2 - Control device for double deck elevator - Google Patents

Description

  The present invention relates to a control device for a double deck elevator. More specifically, the present invention relates to a movable double-deck elevator apparatus including a car frame, and an upper car and a lower car that are arranged up and down in the car frame and raised and lowered together with the car frame.

  For example, Patent Document 1 discloses a control device for a double deck elevator. The double deck elevator includes an upper car and a lower car that are arranged vertically in a car frame. The upper car and the lower car are suspended by a suspension body in a car frame with a 2: 1 roping system. The suspended body is wound around a car sheave adjusting drive sheave by a double wrap method.

  In this double deck elevator, when the car is raised and lowered, the upper car and the lower car are raised and lowered together with the car frame that is raised and lowered by the driving force of the main drive device. On the other hand, if the floor space of the building differs from the space between the upper car and the lower car when the upper car and the lower car are stopped, the upper car and the lower car are moved inside the car frame by the car sheave for adjusting the car position. It is moved relative to the car frame. As a result, the interval between the upper car and the lower car is adjusted. That is, when the upper car descends, the lower car rises and the vertical distance becomes smaller. On the other hand, when the upper car is raised, the lower car is lowered and the distance between the upper and lower cars is increased. Thereby, the interval between the upper car and the lower car is adjusted, and the stop positions of the upper and lower cars are adjusted to the landing position.

JP 2007-331871 A

  In the elevator of Patent Document 1, the main drive device is used when the car is raised and lowered, while the car position adjusting drive sheave is used when adjusting the landing interval between the upper car and the lower car. That is, the movement of the car frame by the main driving device and the movement of the upper car and the lower car by the car position adjusting drive sheave are performed independently. For this reason, it is difficult to quickly move the car frame and the upper car and the lower car. In this respect, there is still room for improvement in the conventional double deck elevator.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an improved double deck elevator capable of quickly moving an upper car and a lower car.

In order to achieve the above object, a double deck elevator according to the present invention includes a car frame that can be raised and lowered in a hoistway, and an elevating means that raises and lowers the car frame. The double deck elevator according to the present invention includes an upper car, a lower car, and a moving means. The upper car is suspended by a rope inside the car frame, and the lower car is suspended by a rope below the upper car. The moving means is installed on the car frame and has a drive sheave around which a rope is wound, and moves the upper car and the lower car in directions opposite to each other. The double deck elevator further includes first detection means, second detection means, and a control device. The first detection means emits a signal relating to the positional relationship between the stop position of the upper car and the landing position, which is the position where the upper car should stop , and the second detection means, the stop position of the lower car and the lower car A signal relating to the positional relationship with the landing position, which is the position to be stopped, is issued. The control device moves the upper car and the lower car by the moving means while moving the car frame up and down by the elevating means according to the signals of the first detecting means and the second detecting means.
More specifically, the control device
Based on the signal from the first or second detection means, when it is detected that one of the stop position of the upper car and the stop position of the lower car is deviated from the landing position, the lifting means and the moving means Drive both to move the upper or lower car. At this time, of the upper car and the lower car, the first car, which is the car in which the stop position and the landing position match, is stationary with respect to the landing position, and the upper car and the lower car Of these, control is performed so that the stop position of the second car, which is the car in which the deviation between the stop position and the landing position is detected, matches the landing position. In addition, when it is detected that the stop position of the upper car and the stop position of the lower car are shifted from the landing position, only one of the lifting means and the moving means is driven, and the upper car is driven. And move the bottom basket.
The moving speed of the car frame when driving both the elevating means and the moving means is slower than the moving speed of the car frame when driving only one of the elevating means and the moving means.

  According to the present invention, the upper car and the lower car can be moved by the moving means while the car frame is raised or lowered by the lifting means. Therefore, it is possible to quickly land the car with high accuracy while adjusting the distance between the upper car and the lower car.

It is a figure for demonstrating the whole structure of the movable double deck elevator in embodiment of this invention. It is a figure for demonstrating the control command of the movable double deck elevator and the outline | summary of operation | movement in embodiment of this invention. It is a figure for demonstrating the sequence of the floor alignment operation | movement of the movable double deck elevator of embodiment of this invention. It is a figure for demonstrating the output conditions of the control instruction | command of the movable double deck elevator in embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is simplified or omitted.

Embodiment.
[Overall configuration of movable double-deck elevator of this embodiment]
FIG. 1 is a schematic diagram for explaining a movable double deck elevator according to an embodiment of the present invention. The movable double deck elevator shown in FIG. 1 includes an outer car 2 (a car frame) and a counterweight 4. The counterweight 4 compensates for the load applied to the outer cage 2. In a machine room (not shown) at the top of the hoistway of the double deck elevator, an outer car driving device 6 (elevating means) which is a hoisting machine for raising and lowering the outer car 2 and the counterweight 4 is installed. . A main rope 8 is wound around the drive sheave of the outer car drive device 6. One end of the main rope 8 is connected to the outer cage 2, and the other end of the main rope 8 is connected to the counterweight 4. That is, the main rope 8 extends vertically upward from the upper part of the outer car 2 and is wound around the driving sheave of the outer car driving device 6, and vertically downward from the driving sheave of the outer car driving device 6. It extends and is connected to the upper part of the counterweight 4. Thus, the outer cage 2 and the counterweight 4 are suspended in a hoistway shape by the main rope 8, and the outer cage 2 and the counterweight 4 are driven by the rotation of the outer cage driving device 6. The elevator can be moved up and down in an elevator hoistway (not shown).

  Inside the outer car 2, an upper car 12 and a lower car 14 are provided vertically. The upper car 12 and the lower car 14 are cars for loading passengers and luggage. An upper and lower car driving device 16 (moving means) for moving the upper car 12 and the lower car 14 up and down in the outer car 2 is installed on the upper part of the outer car 2. One end of the auxiliary rope 18 is fixed to the upper part of the outer cage 2. The sub rope 18 extends vertically downward in the outer car 2 from a fixed position on the upper part of the outer car 2, and is wound around a pulley 20 provided on the upper part of the upper car 12. The auxiliary rope 18 extends from the pulley 20 vertically in the outer car 2 and is wound around the drive sheave of the upper and lower car driving device 16, and extends from the upper and lower car driving device 16 in the outer car 2 vertically downward. It is wound around a pulley 22 installed at the lower part of the lower car 14. The sub rope 18 extends upward from the pulley 22, and the other end of the sub rope 18 is fixed at a rope fixing position above the outer cage 2.

  As described above, the upper car 12 and the lower car 14 are suspended in the outer car 2 by the secondary rope 18 by the 2: 1 roping method, driven by the rotation of the upper and lower car driving devices 16, and can be raised and lowered in the outer car 2. It has become.

  As shown in FIG. 1, in addition to the floor plate (not shown) for defining the door zone, floor-to-floor operation (so-called releveling) is provided at the landing positions 30a and 30b on each floor of the building where the double deck elevator is installed. Operation) floor alignment plates 32a and 32b are installed. Each of the floor alignment plates 32a and 32b includes upper plates 34a and 34b extending upward from the landing positions 30a and 30b, and lower plates 36a and 36b extending downward. In each of the floor alignment plates 32a and 32b, the upper plates 34a and 34b and the lower plates 36a and 36b are overlapped at the landing positions 30a and 30b. In each of the floor alignment plates 32a and 32b, overlapping portions of the upper plates 34a and 34b and the lower plates 36a and 36b define a predetermined landing range at the landing positions 30a and 30b. In addition, in each figure, when there is the same member on the upper car 12 side and the lower car 14 side, the suffix “a” is attached to the reference numeral of the member on the upper car 12 side, and the member on the lower car 14 side The symbol “b” is indicated by adding a subscript “b”.

  The upper car 12 is provided with an upper car position detector 38a (first detection means), and the lower car 14 is provided with a lower car position detector 38b (second detection means). The upper car position detector 38a is installed so as to face the floor alignment plate 32a when the upper car 12 is in the vicinity of the landing position 30a. Further, the upper car position detector 38a and the floor alignment plate 32a are arranged such that when the upper car position detector 38a faces the overlapping portion of the upper plate 34a and the lower plate 36a, the height of the car floor and the landing position are increased. Are installed to match. The lower car position detector 38b is installed so as to face the floor alignment plate 32b when the lower car 14 is in the vicinity of the landing position 30b. Further, the lower car position detector 38b and the floor alignment plate 32b are arranged such that when the lower car position detector 38b faces the overlapping portion of the upper plate 34b and the lower plate 36b, the height of the car floor and the landing position are increased. Are installed to match. Here, “opposing” means that the heights are the same. The upper car position detector 38a emits a predetermined signal when it is in a position facing the upper plate 34a or the lower plate 36a. The lower car position detector 38b emits a predetermined signal when it is at a position facing the upper plate 34b or the lower plate 36b.

  The double deck elevator of FIG. 1 includes two control devices, a main control device 40 and a sub control device 42. The main controller 40 controls the rotation operation of the outer car drive device 6. The main controller 40 is electrically connected to the upper and lower car position detectors 38a and 38b, and receives the signals generated by the detectors 38a and 38b to detect the positions of the upper car 12 and the lower car 14. . The sub-control device 42 is electrically connected to the main control device 40 and the upper / lower car driving device 16. The sub controller 42 controls the movement of the upper car 12 and the lower car 14 by receiving the control signal from the main controller 40 and driving the upper and lower car driving devices 16.

[Operation of Double Deck Elevator of this Embodiment]
The general operation of the double deck elevator according to the present embodiment is controlled by a control device including a main control device 40 and a sub control device 42 indicated by a one-dot chain line in FIG. For example, the main controller 40 controls the raising and lowering of the outer car 2 and the counterweight 4 by controlling the rotation of the outer car driving device 6.

  The sub-control device 42 receives the control signal from the main control device 40 and controls the movement of the upper car 12 and the lower car 14 in the outer car 2 by controlling the rotation of the upper and lower car driving devices 16. . When the upper / lower car driving device 16 is rotated in the first direction, the upper car 12 moves upward in the outer car 2 and the lower car 14 moves downward in the outer car 2. Therefore, the interval between the upper car 12 and the lower car 14 can be increased by rotating the upper and lower car driving device 16 in the first direction. On the other hand, by rotating the upper / lower car driving device 16 in the second direction opposite to the first direction, the upper car 5 moves downward in the outer car 2 and the lower car 14 moves upward in the outer car 2. Moving. Therefore, the interval between the upper car 12 and the lower car 14 can be reduced by rotating the upper and lower car driving device 16 in the second direction.

[Outline of control of floor-to-floor operation of this embodiment]
The upper car position detector 38a emits a signal indicating that the upper car 12 is displaced upward while facing only the upper plate 34a, and the upper car 12 while facing only the lower plate 36a. Emits a signal indicating that is shifted downward. The upper car position detector 38a emits a signal indicating that the upper car 12 is within the landing range while facing the overlapping portion of the upper plate 34a and the lower plate 36b.

  The lower car position detector 38b emits a signal indicating that the lower car 14 is displaced upward while facing only the upper plate 34b, while the lower car 14 is facing only the lower plate 36b. Emits a signal indicating that is shifted downward. The lower car position detector 38b emits a signal indicating that the lower car 14 is within the landing range while facing the overlapping portion of the upper plate 34b and the lower plate 36b.

  The main controller 40 receives the signals related to the landing positions of the upper car 12 and the lower car 14 and executes control for adjusting the landing positions of the upper car 12 and the lower car 14 as follows. For example, when it is detected that one of the stop position of the upper car 12 and the stop position of the lower car 14 is deviated from the landing range, the car whose stop position is in the landing range is set as the landing position 30a. Alternatively, the car is stationary with respect to 30b, and the car whose stop position is shifted from the landing range is moved to perform floor matching.

  At the time of the floor alignment, both the outer car driving device 6 and the upper and lower car driving devices 16 are driven. Specifically, of the upper car 12 and the lower car 14, the speed relative to the outer car 2 and the speed of the outer car 2 of the car in which the landing position is matched (the first car) are the same. The absolute values are controlled to be opposite to each other. Hereinafter, the speed of the speed command is the speed of the outer car 2 with respect to each landing position 30 in the case of the outer car driving device 6. On the other hand, in the case of the upper car 12 or the lower car 14, it is a relative speed with respect to the outer car 2 with the inside of the outer car 2 as a reference.

  FIG. 2 is a diagram for explaining an outline of control commands and operations of the movable double deck elevator according to the embodiment of the present invention. In the example of FIG. 2, the upper car 12 stops within the landing range, and the lower car 14 stops at a position shifted upward. The main controller 40 detects information related to the stop positions of the upper car 12 and the lower car 14 based on signals from the upper car position detector 38a and the lower car position detector 38b. Specifically, in FIG. 2, a landing deviation in the upward direction of the landing of the upper car 12 and the landing of the lower car 14 is detected.

  When the main controller 40 detects a stop in the landing range of one of the upper car 12 and the lower car 14 and a landing deviation of the other car, the main controller 40 corrects the landing deviation of the car causing the landing deviation. A control signal for driving the outer car driving device 6 is issued so as to move the outer car 2 at a speed V [m / min] in the direction to be corrected (correction direction). At the same time, the main control device 40 controls the upper and lower car driving devices 16 so that the upper car 12 and the lower car 14 that have caused landing deviation move in the same correction direction at the speed V. To emit. As a result, the relative speed (−V) of the car stopped within the landing range with respect to the outer car 2 and the ascending / descending speed (V) of the outer car 2 with respect to the landing positions 30a and 30b are opposite to each other and are absolute. The value is the same speed | V |.

  As a result, the car having the landing deviation (second car) moves to the landing position 30a or 30b in the correction direction along with the outer car 2 at the speed V and is corrected in the outer car 2. Move in the direction with speed V. Accordingly, the moving speed of the car with the landing deviation with respect to the landing position 30a or 30b is 2V in the correction direction.

  On the other hand, for the car with no landing deviation (first car), the movement at the speed V in the correction direction associated with the outer car 2 and the speed V in the direction opposite to the correction direction in the outer car 2 This offsets the movement. Accordingly, the car having no landing deviation is brought into a stationary state with respect to the landing position 30a or 30b.

  Specifically, in the example of FIG. 2, the outer car 2 is moved at the speed V in the descending direction in order to correct the upward landing deviation of the lower car 14. Further, the upper and lower car driving devices 16 are driven at a speed V in the first direction in which the distance between the upper car 12 and the lower car 14 is separated, and the upper car 12 is moved upward, the lower car 14 is moved downward, and the outer car 2 is respectively moved. To move at speed V. As a result, for the upper car 12 stopped in the landing range, the lowering at the speed V accompanying the outer car 2 and the rising at the speed −V in the outer car 2 are offset, and the landing position 30a. Is stationary (zero speed). On the other hand, the lower car 14 descends at the speed 2V with respect to the landing position 30b due to the lowering at the speed V of the outer car 2 and the lowering at the speed V in the outer car 2.

  FIG. 3 is a diagram showing a sequence of floor-to-floor operation of the movable double deck elevator according to the embodiment of the present invention. 3 (a) and 3 (b) show transitions of inputs from the upper car position detector 38a and the lower car position detector 38b, and hatched portions indicate when there is a detection signal. Further, (c), (d), and (e) in FIG. 3 represent the speeds of the outer car 2, the upper car 12, and the lower car 14, respectively. In FIG. 3, upward (upward direction) is +, and downward (downward direction) is −. Further, (f) and (g) of FIG. 3 represent deviations of the stop positions of the upper car 12 and the lower car 14 from the landing positions 30a and 30b. Here, an upward landing deviation is defined as +, and a downward landing deviation is defined as-. 3 (f) and 3 (g), a range surrounded by a broken line extending in the horizontal axis direction is a landing range.

  As shown in FIG. 3, at time t0, the upper car position detector 38a and the lower car position detector 38b both detect the upper plates 34a and 34b and the lower plates 36a and 36b. Accordingly, at this time, the stop position of the upper car 12 and the stop position of the lower car 14 are both within the landing range. Thereafter, in the example of FIG. 3, at time t1, the lower car 14 is shifted upward beyond the landing range. Such a landing deviation after stopping can occur, for example, due to a change in load caused by passengers getting on and off. When the landing deviation occurs, the lower car position detector 38b transmits only the detection signal of the upper plate 34a, and the detection signal of the lower plate 36b is cut off.

  In such a state at time t1, as shown in FIGS. 3C to 3E, the outer car 2 is driven at a speed of −V by driving the outer car driving device 6 at time t2 immediately after that. Is controlled to move downward. On the other hand, the upper car 12 is controlled to move upward at a speed + V and the lower car 14 is controlled to move at a speed −V by driving the upper and lower car driving devices 16.

  As a result, as shown in FIG. 3 (f), the upward and downward movements of the upper car 12 are canceled out, and the upper car 12 is in a stationary state with respect to the landing position 30a. Maintained in range. On the other hand, as shown in FIG. 3G, the lower car 14 moves (lowers) at a speed of −2 V, and the landing deviation in the upward direction gradually decreases.

  When the lower car 14 enters the landing range at time t3, detection signals for the upper plate 34b and the lower plate 36b are transmitted again by the lower car position detector 38b. At this time, the lowering of the outer car 2 and the vertical driving of the upper car 12 and the lower car 14 are released, and the speeds of the outer car 2, the upper car 12, and the lower car 14 are all zero, and the upper car 12 And the lower car 14 is in a stationary state within the landing range.

  FIG. 4 is a diagram for explaining the output conditions of the control command for the movable double deck elevator according to the embodiment of the present invention. As shown in FIG. 4, the pattern in the case of detecting that one of the upper car 12 and the lower car 14 stops in the landing range and the other stop position is shifted upward or downward from the landing range is There are four ways of condition 1 to condition 4.

  Condition 1 is a case where the stop position of the lower car 14 is shifted upward from the landing range. This state is detected when the detection signal of the lower plate 36b by the lower car position detector 38b is not transmitted. In this case, the main controller 40 sends a signal for moving the outer car 2 at the speed −V to the outer car driving device 6, and the upper car 12 and the lower car 14 in the first direction with respect to the upper and lower car driving devices 16. A signal for moving at a speed V is generated. As a result, as an operation at the time of floor-to-floor operation, the upper car 12 is stationary with respect to the landing position 30a, and the lower car descends at a speed of 2V with respect to the landing position 30b.

  Condition 2 is a case where the stop position of the lower car 14 is shifted downward from the landing range. This state is detected when the detection signal of the upper plate 34b by the lower car position detector 38b is not transmitted. The main controller 40 sends a signal for moving the outer car 2 at the speed + V to the outer car driving device 6, and moves the upper car 12 and the lower car 14 to the speed V in the second direction with respect to the upper and lower car driving devices 16. Send a signal to move with. As a result, as an operation at the time of floor-to-floor operation, the upper car 12 is stationary with respect to the landing position 30a, and the lower car 14 is raised at a speed of 2V with respect to the landing position 30b.

  Condition 3 is a case where the stop position of the upper car 12 is shifted upward from the landing range. This state is detected when the detection signal of the lower plate 36a by the upper car position detector 38a is not transmitted. In this case, the main control device 40 moves the upper car 12 and the lower car 14 in the second direction with respect to the signal for moving the outer car 2 at the speed −V to the outer car driving device 6 and the upper and lower car driving devices 16. A signal to move at speed V is issued. As a result, as an operation at the time of floor-to-floor operation, the upper car 12 is lowered at a speed of 2 V with respect to the landing position 30a, and the lower car 14 is stationary with respect to the landing position 30b.

  Condition 4 is a case where the stop position of the upper car 12 is shifted downward from the landing range. This state is detected when the detection signal of the upper plate 34a by the upper car position detector 38a is not transmitted. In this case, the main controller 40 sends a signal for moving the outer car 2 at the speed + V to the outer car driving device 6 and the upper car 12 and the lower car at a speed V in the first direction with respect to the upper and lower car driving devices 16. A signal for moving the car 14 is issued. As a result, as an operation at the time of floor-to-floor operation, the upper car rises at a speed of 2 V with respect to the landing position 30a, and the lower car 14 becomes stationary with respect to the landing position 30b.

  As described above, in the embodiment of the present invention, when the landing deviation occurs in one of the upper car 12 and the lower car 14, the car that is stopped in the landing range is set to the landing position. Only the other car can be moved in a stationary state. At this time, by moving the outer car 2 and the car having the landing deviation to the same side, the floor-to-floor operation can be performed quickly at a speed of 2V.

  By the way, when both the upper car 12 and the lower car 14 deviate from the landing range as the upper car 12 or the lower car 14 gets on and off, the outer car driving device 6 or the upper and lower car driving devices as in the prior art. The floor-to-floor operation by one of 16 is performed. Specifically, when the upper car 12 and the lower car 14 are displaced in the same direction, the outer car driving device 6 is driven in a direction to correct the deviation. On the other hand, when the upper car 12 and the lower car 14 are shifted in the opposite directions, the upper and lower car driving devices 16 are driven in a direction to correct the shift.

  When one of the upper car 12 and the lower car 14 reaches the landing range by the floor-matching operation by one of the outer car driving device 6 and the upper and lower car driving devices 16, the above-described outer car driving device 6 and the upper and lower car driving devices By performing the floor-to-floor operation for driving both the car driving devices 16, both the upper car 12 and the lower car 14 can be stopped in the landing range.

Further, in the present embodiment, the speed command value to the outer car driving device 6 or the speed command value to the upper and lower car driving device 16 during the floor alignment operation by one of the outer car driving device 6 and the upper and lower car driving device 16. Vsolo [m / min] is set to a speed that is twice the speed V in the case of performing the floor-to-floor operation using both the outer car driving device 6 and the upper and lower car driving devices 16 described above. Try to establish a relationship.
V = Vsolo / 2 (1)

Further, during floor-to-floor operation in which one of the outer car driving device 6 and the upper and lower car driving devices 16 is driven, the threshold value Vsoloth [m / min] for detecting the opening of the door is set to Using the speed threshold value Vth [m / min] for detecting door-opening travel during floor-to-floor operation for driving both the car drive devices 16, the following relational expression (4) is established.
Vth = Vsolid / 2 (4)

Here, the relationship represented by the following equation (5) is generally established between the speed command value Vsolo and the speed threshold value Vsoloth.
Vsolo <Vsoloth (5)

  The speed command value V for floor-to-floor operation for driving both the outer car drive device 6 and the upper and lower car drive devices 16 is Vsolo / 2. However, the speed of the upper car 12 or the lower car 14 during the floor-to-floor operation is 2 V with respect to the landing position 30a or 30b. That is, the speed is the same as the speed Vsolo during the floor-to-floor operation in which only one of the outer car driving device 6 and the upper and lower car driving devices 16 is driven.

  Further, when both the outer car driving device 6 and the upper and lower car driving device 16 run away at the same time in the floor-to-floor operation in which both the outer car driving device 6 and the upper and lower car driving device 16 are driven, the outer car driving device 6 and the upper and lower car driving device 16 Compared to the case where either one of the outer car driving device 6 and the upper and lower car driving devices 16 runs out of control at the time of floor-to-floor operation in which only one of the car driving devices 16 is driven, the upper car at the time when the door open running is detected. There is a possibility that the speed of the 12 or the lower car 14 increases and the braking distance after the brake braking at the time of emergency stop becomes long.

  In the present embodiment, however, the door opening travel of the outer car driving device 6 and the upper and lower car driving devices 16 during the floor-to-floor operation for driving both the outer car driving device 6 and the upper and lower car driving devices 16 is detected. The speed threshold Vth is set to a speed that is half of the speed threshold Vsolid during floor-to-floor operation for driving one of the outer car driving device 6 and the upper and lower car driving devices 16. Therefore, even when both the outer car driving device 6 and the upper and lower car driving devices 16 run away, it is possible to quickly detect the opening of the door. Here, since the speed command value V is less than the speed threshold value Vth, no trouble occurs in the floor-to-floor operation. Therefore, even during floor-to-floor operation in which both the outer car driving device 6 and the upper and lower car driving devices 16 are driven, the door-opening traveling can be detected quickly and stopped safely.

  As described above, according to the present embodiment, the upper car position detector 38a and the lower car position detector 38b can reduce the landing deviation from the landing range of only one of the upper car 12 and the lower car 14. When detected, both the outer car driving device 6 and the upper and lower car driving devices 16 are driven. Thereby, the freedom degree of a movement of the upper cage | basket | car 12 and the lower cage | basket | car 14 becomes high, and it can perform a floor alignment with high precision and quickness.

  Further, when the landing deviation from the landing positions 30a, 30b of only one of the upper car 12 and the lower car 14 is detected, the car that is stopped at the landing position is made stationary with respect to the landing position. In this state, the outer car driving device 6 and the upper and lower car driving devices 16 are controlled so that the floor of the car having the landing slippage is aligned. As a result, at the time of floor-to-floor operation, it is possible to perform floor-to-floor alignment only for the car whose landing position is shifted while the car that has already stopped at the landing position is stopped.

  In this control command, the relative speed of the upper car 12 and the lower car 14 that are stopped at the landing position with respect to the outer car 2 and the speed of the outer car 2 with respect to the landing position are absolute. The values are the same and the speeds are opposite to each other. As a result, the car that is stopped at the landing position is made stationary with respect to the landing position, and the speed of the car that is causing the landing deviation is set to a speed 2 V that is twice the control command speed V. can do.

  However, the present invention is not limited to such control, and drives the outer car driving device 6 and the upper and lower car driving devices 16 together to adjust the positions of the upper car 12 and the lower car 14. If there is, it is not limited to this. Therefore, for example, the absolute value of the relative speed of the upper car 12 and the lower car 14 that are stopped at the landing position with respect to the outer car 2 and the speed of the outer car 2 with respect to the landing position are strictly It does not have to be the same. Further, for example, the present invention drives both the outer car driving device 6 and the upper and lower car driving devices 16 when both the upper car 12 and the lower car 14 are misaligned, and eliminates the landing misalignment of both at once. As described above, a speed command value may be output. In this case, each speed command value may be set as appropriate according to the direction and magnitude of landing deviation.

  Further, during floor-to-floor operation in which both the outer car driving device 6 and the upper and lower car driving devices 16 are driven, speed command values for the outer car driving device 6 and the upper and lower car driving devices 16 are set to the outer car driving device 6 and the upper and lower car driving devices 16. The speed is set to half of the command speed during the floor-to-floor operation for driving one of the devices 16. Further, a speed threshold for driving both the outer car driving device 6 and the upper and lower car driving device 16 is used to detect a door opening travel when driving one of the outer car driving device 6 and the upper and lower car driving device 16. Set to half of the speed threshold. Moreover, since the speed command value in this case is less than the speed threshold value, there is no problem during floor-to-floor operation. Therefore, the door-opening traveling can be quickly detected even during the floor-to-floor operation in which both the outer car driving device 6 and the upper and lower car driving devices are driven.

  In the present embodiment, when there is a landing deviation, the upper and lower car position detectors 38a and 38b do not transmit the detection signal of any one of the upper plates 34a and 34b and the lower plates 36a and 36b. The case of detecting a landing error has been described. However, the configuration of the detecting means for detecting the stop position of the upper car 12 or the stop position of the lower car 14 is not limited to this, and the fact that the stop position has been stopped in the direction of deviation from the landing range and the landing range. Any other detection means may be used as long as it can be detected.

  Moreover, in this Embodiment, the case where the outer cage | basket | car 2 and the counterweight 4 were suspended in the shape of a temple by the 1: 1 roping system was demonstrated. However, in the present invention, the roping method between the outer cage 2 and the counterweight 4 is not limited to this, and another method may be used.

  Further, the speed command value V for the outer car 2, the upper car 12 and the lower car 14 in the present embodiment means the respective moving speeds of the outer car 2, the upper car 12 and the lower car 14. Therefore, the actual rotational speed command value issued to the outer car driving device 6 and the upper and lower car driving devices 16 is a value corresponding to the speed V after correction by roping of the main rope 8 and the sub rope 18 is performed. Is set as appropriate.

  In the above embodiment, when referring to the number of each element, quantity, quantity, range, etc., the reference is made unless otherwise specified or the number is clearly specified in principle. The invention is not limited to the numbers. The structures, steps, and the like described in this embodiment are not necessarily essential to the present invention unless otherwise specified or clearly specified in principle.

  2 Outer cage, 4 Counterweight, 6 Driving device, 8 Main rope, 12 Upper cage, 14 Lower cage, 16 Upper and lower cage drive device, 18 Sub rope, 20, 22 Pulley, 30a, 30b Landing position, 32a, 32b Floor alignment plate, 34a, 34b Upper plate, 36a, 36b Lower plate, 38a Upper car position detector, 38b Lower car position detector, 40 Main control device, 42 Sub control device.

Claims (4)

A car frame that can be raised and lowered in the hoistway;
Elevating means for elevating and lowering the car frame;
An upper basket suspended by a rope in the car frame,
A lower car suspended by the rope below the upper car in the car frame,
A moving means installed on the car frame, having a drive sheave around which the rope is wound, and moving the upper car and the lower car in directions opposite to each other;
First detection means for emitting a signal relating to the stop position of the upper car;
Second detection means for issuing a signal relating to the stop position of the lower car;
A control device that moves the upper car and the lower car by the moving means while moving the car frame up and down by the elevating means in response to signals from the first detecting means and the second detecting means;
Bei to give a,
The first detection means emits a signal relating to a positional relationship between a stop position of the upper car and a landing position that is a position where the upper car should stop,
The second detection means emits a signal relating to the positional relationship between the stop position of the lower car and the landing position that is the position where the lower car should stop,
The controller is
Based on the signal from the first or second detection means, when it is detected that one of the stop position of the upper car and the stop position of the lower car is deviated from the landing position, Drive both the lifting means and the moving means to move the upper car or the lower car,
Of the upper car and the lower car, in a state where the first car, which is the car in which the stop position and the landing position are matched, is stationary with respect to the landing position,
Controlling the stop position of the second car, which is the car from which the deviation between the stop position and the landing position of the upper car and the lower car is detected, to match the landing position,
When it is detected that the stop position of the upper car and the stop position of the lower car are deviated from the landing position, only one of the elevating means and the moving means is driven, Move the upper car and the lower car;
The moving speed of the car frame when driving both the elevating means and the moving means is higher than the moving speed of the car frame when driving only one of the elevating means and the moving means. A double deck elevator characterized by being slow . The controller controls the elevating means and the moving means so that the moving direction of the first car relative to the car frame and the moving direction of the car frame relative to the landing position are opposite to each other. The double deck elevator according to claim 1 , wherein the double deck elevator is controlled. In the case where both the lifting means and the moving means are driven, the speed threshold for detecting the door opening travel by the lifting means and the moving means drives only one of the lifting means and the moving means. The double-deck elevator according to claim 1 or 2 , wherein the double-deck elevator is smaller than a speed threshold of the door-opening traveling. Prior Symbol controller, that the first or on the basis of a signal from the second sensing means, one of the stop position and the stop position of the lower cage of the upper car is offset from the landing position If detected,
Of the upper car and the lower car, in the correction direction for correcting the deviation of the stop position of the second car, which is the car from which the deviation between the stop position and the landing position is detected, from the landing position Controlling the elevating means so that the car frame moves,
The double deck elevator according to any one of claims 1 to 3 , wherein the moving means is controlled so that the second car moves in the correction direction.

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