JP2010208752A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of correcting a floor landing position of respective cars in a simple constitution, in the elevator device for connecting a pair of cars in a well bucket system via a rope. <P>SOLUTION: One car 1a and the other car 1b are connected by the rope 2. This rope 2 is engaged with a hoisting machine sheave 3. The hoisting machine sheave 3 is driven by a hoisting machine motor 4, and this hoisting machine motor 4 is controlled by a control means 6. A rotating speed detector 5 composed of a pulse generator 5a and a pulse detector 5b is also arranged in the vicinity of the hoisting machine motor 4. An adjusting means 30 composed of a movable sheave 21 arranged along the rope 2 between the hoisting machine sheave 3 and the other car 1b and a driving device 22 for driving the movable sheave 21 in the horizontal direction, is also provided. A position of a floor surface 8b of the other car 1b can be accurately adjusted by this adjusting means 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator apparatus having a rope connected to a hoisting machine sheave and connecting one car, the other car, one car and the other car, The present invention relates to an elevator apparatus that can prevent the landing position of one car and the other car from shifting due to expansion and contraction of a rope.

  2. Description of the Related Art Conventionally, an elevator apparatus is known in which a counterweight is connected to a passenger car via a rope. The rope is passed over the hoist, and the hoist and the counterweight are driven by the hoist. The hoisting machine is controlled so that the car lands at a predetermined position in the elevator hall.

  Even when the car has landed at a predetermined position on the landing, the rope may expand and contract due to fluctuations in the load in the car, which may cause the car to deviate from the predetermined position on the landing. In order to solve such a shift, Patent Document 1 proposes an elevator apparatus in which a rope to which a carriage and a counterweight are connected is passed to a hoisting machine, and the rope is deflected by a sheave. Yes. This elevator apparatus is provided with a landing error correcting device that corrects a shift in the position of the car without driving the hoisting machine. This landing error correction device is configured to move a turning mechanism of a deflecting sheave, a car position detection unit provided in the car, and a position signal detected by the car position detection unit. The vehicle landing error correction means controls the moving mechanism based on the landing error correction value.

  There is also known an elevator apparatus in which a pair of passenger cars are connected in a slidable manner via ropes. For example, in Patent Document 2, a pair of passenger cars is attached to both ends of a rope, and a hoisting machine sheave that spans the ropes is disposed directly above each of the pair of passenger cars. This hoisting machine sheave is driven by a hoisting machine motor. In this case, when one of the cars is raised by the driving force from the hoisting machine sheave, the other car is lowered. In such an elevator apparatus, a driving force equivalent to the driving force used to drive a single car in a conventional elevator apparatus in which a counterweight is connected to the car via a rope via a rope. Two cars (a pair of cars) can be driven. For this reason, the energy required for driving the car can be greatly reduced.

JP-A-8-59106 JP 2005-280988 A

  Even in an elevator apparatus in which a pair of passenger cars are slidably connected via a rope, in the same manner as in a conventional elevator apparatus in which a counterweight is connected to a slatter via a rope. As the load of the vehicle fluctuates, the rope expands and contracts, thereby causing the landing position of the car to shift. In this case, when one of the cars is driven by the hoisting machine and the deviation of the landing position is corrected, the landing position of the other car connected to one of the cars is shifted accordingly. . For this reason, in an elevator apparatus in which a pair of passenger cars are connected in a slidable manner via ropes, more complex control than in the case of conventional elevator apparatuses is required when correcting the deviation of the landing position of the passenger cars. Is done.

  For example, in an elevator apparatus in which a pair of passenger cars are connected in a slidable manner via a rope, when the landing error correcting device proposed in Patent Document 1 is used, the landing error correction is performed for each of the pair of passenger cars. It is necessary to provide a device. This requires a lot of installation space and increases costs. Moreover, since it is necessary to control each landing error correction apparatus independently, control also becomes complicated.

  The present invention has been made in consideration of the above points. In an elevator apparatus in which one car and the other car are connected to each other via a rope, each car has a simple configuration. It is an object of the present invention to provide an elevator apparatus capable of correcting the landing position of the elevator.

  The present invention relates to one car that moves up and down between a plurality of elevator landings, the other car that moves up and down between a plurality of elevator landings, a rope that connects one car and the other car, and a rope. A hoisting machine sheave to be combined, a hoisting machine motor for driving the hoisting machine sheave, a control means for controlling the hoisting machine motor, and when one of the cars is landed at the first landing, A position detector for one car that detects the position of the car, and an adjustment that is provided along the rope between the hoist sheave and the other car, and adjusts the position of the other car by pressing the rope. Means for detecting the load in the other car, and a control means for detecting the hoisting machine motor based on a signal from the one car position detector. Control the predetermined drive amount And the adjustment means is controlled based on the drive amount of the hoisting motor and the signal from the load detection means. The elevator apparatus is characterized in that the rope is pressed to make the floor surface of the other car coincide with the floor surface of the predetermined second landing.

  The present invention further comprises an abnormal condition detecting means for detecting that an abnormal condition has occurred, wherein the control means stops the hoisting machine motor based on a signal from the abnormal condition detecting means, and then the hoisting machine motor The elevator apparatus is characterized in that the adjusting means is controlled based on the driving position of the vehicle and the signal from the load detecting means to press the rope, and the other car is moved to the nearest landing.

  The present invention further includes one car load detecting means for detecting a load in one car, and the control means includes a load detecting means for one car and a load detecting means for the other car. Based on the signal, the difference between the load in one car and the load in the other car is calculated, and when this difference is smaller than a predetermined value, each of the one car and the other car An elevator apparatus that controls a hoisting machine motor to land on a landing.

  The present invention relates to one car that moves up and down between a plurality of elevator landings, the other car that moves up and down between a plurality of elevator landings, a rope that connects one car and the other car, and a rope. A hoisting machine sheave to be combined, a hoisting machine motor for driving the hoisting machine sheave, a control means for controlling the hoisting machine motor, and when one of the cars is landed at the first landing, A first car position detector for detecting the position of the car, a second car position detector for detecting the position of the other car when the other car reaches the second landing, and winding Adjustment means provided along the rope between the machine sheave and the other car, for adjusting the position of the other car by pressing the rope, and the control means includes the first car position detector Hoisting machine based on the signal from The vehicle is controlled and driven so that the floor of one of the cars matches the floor of the first landing, and then the adjusting means is controlled based on the signal from the second car position detector to control the rope. The elevator apparatus is characterized in that, by pressing, the floor surface of the other car is made to coincide with the floor surface of the second landing, and thereafter, the elongation of the rope is calculated based on the adjustment amount of the position of the other car. .

  According to the present invention, in an elevator apparatus in which one car and the other car are connected by a rope, the elevator system is provided along the rope between the hoist sheave and the other car, and presses the rope. Adjustment means for adjusting the position of the other car and load detection means for detecting a load in the other car are provided. Then, by controlling the adjusting means based on the drive position of the hoist motor and the signal from the load detecting means and pressing the rope, the floor surface of the other car is the floor surface of the predetermined second landing The position of the other car is adjusted so as to match. In this way, the position of the floor surface of the other car can be accurately adjusted with a space-saving and low-cost configuration.

  According to the present invention, in an elevator apparatus in which one car and the other car are connected by a rope, the first car position detector that detects the position of one car and the other car A second car position detector for detecting the position, and an adjusting means provided along the rope between the hoist sheave and the other car, and adjusting the position of the other car by pressing the rope; Is provided. Then, the hoisting machine motor is driven based on the signal from the first car position detector, the floor surface of one car is made to coincide with the floor surface of the predetermined first landing, and then the second car Based on the signal from the position detector, the adjusting means is controlled to press the rope. As a result, the position of the other car is adjusted so that the floor surface of the other car matches the floor surface of the predetermined second landing. Thereafter, the elongation of the rope is calculated based on the adjustment amount by the adjusting means. Thus, an elevator apparatus capable of calculating the elongation of the rope can be provided with a simple configuration.

FIG. 1 is a diagram showing an elevator apparatus according to a first embodiment of the present invention. FIG. 2 is a block diagram showing the control means in the first embodiment of the present invention. FIG. 3 is a diagram showing a modification in which a deflecting sheave is provided in the first embodiment of the present invention. FIG. 4 is a flowchart showing a control method by the control means in the second embodiment of the present invention. FIG. 5 is a block diagram showing control means in the third embodiment of the present invention. FIG. 6 is a block diagram showing a control means in the fourth embodiment of the present invention. FIG. 7 is a flowchart showing a control method by the control means in the fourth embodiment of the present invention.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
1 to 3 are views showing an elevator apparatus according to a first embodiment of the present invention. Among these, FIG. 1 is a figure which shows the elevator apparatus in the 1st Embodiment of this invention, FIG. 2 is a block diagram which shows the control means in the 1st Embodiment of this invention. FIG. 3 is a diagram showing a modification in which a deflecting sheave is provided in the first embodiment of the present invention.

  First, an overall configuration of the elevator apparatus 10 will be described with reference to FIG. As shown in FIG. 1, the elevator apparatus 10 is provided in a hoistway 20, and is one car that moves up and down between a plurality of elevator landings 15a and 15b along a pair of first car rails (not shown). 1a and the other car 1b which goes up and down along a pair of second car rails (not shown) between the elevator halls 15a and 15b. One car 1a and the other car 1b are connected by a rope 2. The rope 2 has a traction sheave 7a attached to one car 1a and a traction attached to the other car 1b. The sheave 7b is engaged with the hoisting machine sheave 3. The hoisting machine sheave 3 is driven by a hoisting machine motor 4, and the hoisting machine motor 4 is controlled by a control means 6.

  As shown in FIG. 1, a rotation speed detector 5 including a pulse generator 5a and a pulse detector 5b is installed in the vicinity of the hoisting machine motor 4. Among these, the pulse generator 5a is attached to the rotating shaft of the hoisting machine motor 4, and this pulse generator 5a generates a pulse every time the hoisting machine motor 4 rotates by a certain amount. For example, the pulse generator 5a generates approximately 4000 pulses while the hoisting machine motor 4 makes one rotation. The pulse generated from the pulse generator 5a is detected by the pulse detector 5b, and a signal relating to the number of pulses detected by the pulse detector 5b is sent to the control means 6. In this way, the control means 6 can obtain a signal relating to the drive amount (drive position) of the hoist motor 4 based on the number of pulses detected by the pulse detector 5b. The driving amount of the hoisting machine motor 4 corresponds to the rotation amount of the hoisting machine sheave 4 and the movement amount of the cars 1a, 1b. For example, the driving amount of the hoisting machine motor 4 for one pulse is This corresponds to a movement amount 0.1 mm of the cars 1a and 1b.

  Further, on the one car 1a side, when one car 1a lands on a predetermined first landing, for example, the second floor landing 15a shown in FIG. 1, the first ride for detecting the position of one car 1a. A car position detector (one car position detector) 12a and a first load detecting means 11a (one car load detecting means) for detecting a load in one car 1a are provided. . Of these, the first car position detector 12a includes a first landing plate 14a installed on the hoistway wall 20a on the one car 1a side, and a first landing switch 13a installed on the one car 1a. It consists of. Here, the first landing plate 14a indicates the floor level of the landing 15a on the second floor, and the first landing switch 13a detects one of the first landing plates 14a, thereby detecting one of the cars 1a. Is detected to have reached the landing 15a on the second floor. As shown in FIG. 1, signals from the first car position detector 12 a and the first load detection means 11 a are sent to the control means 6.

  Similarly, on the other car 1b side, the other car 1b detects the position of the other car 1b when landing on a predetermined second landing, for example, the first floor landing 15b shown in FIG. A second car position detector 12b and second load detecting means 11b (the other car load detecting means) for detecting the load in the other car 1b are provided. Among these, the second car position detector 12b includes a second landing plate 14b installed on the hoistway wall 20b on the other car 1b side, and a second landing switch 13b installed on the other car 1b. It consists of. Here, the second landing plate 14b indicates the floor level of the landing 15b on the first floor, and the second landing switch 13b detects the second landing plate 14b, thereby detecting the other car. It is detected that 1b has reached the landing 15b on the first floor. As shown in FIG. 1, signals from the second car position detector 12 b and the second load detection means 11 b are sent to the control means 6.

  Furthermore, the elevator apparatus 10 is provided with an adjusting means 30 that presses the rope 2 to adjust the position of the other car 1b. As shown in FIG. 1, the adjusting means 30 drives a movable sheave 21 provided along the rope 2 between the hoisting machine sheave 3 and the other car 1b, and drives the movable sheave 21 in the horizontal direction. And a driving device 22 that performs. The movable sheave 21 is driven in the horizontal direction by the driving device 22 to press the rope 2 in the horizontal direction. Note that when the rope 2 is pressed in the horizontal direction by the movable sheave 21, a rope support member 27 is provided along the rope 2 as shown in FIG. ing.

  Next, the control means 6 will be described in more detail with reference to FIGS.

  As shown in FIG. 2, the control unit 6 includes a hoisting machine control unit 25 and an adjustment unit control unit 23. Of these, the hoisting machine control unit 25 is based on signals from landing call buttons (not shown) provided at the landings and designated floor instruction units (not shown) provided in the cars 1a and 1b. The hoist motor 4 is controlled so that the cars 1a and 1b are directed to a predetermined landing. Further, when the hoisting machine control unit 25 causes the car 1a to land on a predetermined landing, for example, the second floor landing 15a, the bottom surface 8a of one of the passenger cars 1a is made to coincide with the floor 16a of the second floor landing 15a. The hoist motor 4 is controlled based on a signal from the first car position detector 12a.

  By the way, in one car 1a, when one car 1a reaches the landing 15a on the second floor and then a car door (not shown) of one car 1a is opened, one car When a passenger gets off from 1a, the load in one car 1a decreases. When the rope on the one car 1a side contracts due to the decrease in the load, the bottom surface 8a of the one car 1a may be displaced from the floor surface 16a of the second floor 15a. In this case, the hoisting machine control unit 25 of the control means 6 is based on the signal from the first car position detector 12a so that the bottom surface 8a of one of the cars 1a again coincides with the floor surface 16a of the second floor 15a. The hoisting motor 4 is driven again. Such control after one of the passenger cars 1a has landed at the landing 15a on the second floor is performed by the position correcting unit 25a, in particular, of the hoisting machine control unit 25.

Next, the adjustment means controller 23 of the control means 6 will be described in detail. As shown in FIG. 2, the adjusting means control unit 23 is provided with a first calculation unit 23a, a second calculation unit 23b, and a third calculation unit 23c. Among these, the 1st calculating part 23a is connected to the 2nd load detection means 11b, and also the memory | storage part in which the information regarding the rotation speed detector 5 and the elastic constant K of the rope 2 was stored in this 1st calculating part 23a. 23d is connected. This first calculation unit 23a is based on the signal relating to the driving amount (driving position) of the hoisting machine motor 4 sent from the rotation speed detector 5, and the rope 2b on the other car 1b side of the rope 2 is The length is calculated. The first calculation unit 23a also calculates the length of the calculated rope 2b, the signal relating to the load in the other car 1b sent from the second load detecting means 11b, and the rope stored in the storage unit 23d. Based on the information on the elastic constant K of 2, the elastic expansion / contraction amount ε ₂ of the rope 2b on the other car 1b side is calculated.

  Further, the second calculation unit 23 b is connected to the position detector 25 a of the hoisting machine control unit 25 among the rotation speed detector 5 and the control means 6. The second calculation unit 23b determines the drive amount (drive position) of the hoist motor 4 controlled by the position correction unit 25a based on the signal from the rotation speed detector 5 and the signal from the position correction unit 25a. calculate.

And the 3rd calculating part 23c is the winding machine motor calculated by the information regarding the expansion-contraction amount (epsilon) ₂ of the rope 2b by the side of the other car 1b calculated by the 1st calculating part 23a, and the 2nd calculating part 23b. On the basis of the information on the driving amount 4, the driving amount of the movable sheave 21 required to make the floor surface 8 b of the other car 1 b coincide with the floor surface 16 b of the landing floor 15 b on the first floor is calculated. Then, the adjusting means control unit 23 of the control device 6 controls the drive device 22 based on the calculated drive amount of the movable sheave 21. In this way, the floor surface 8b of the other car 1b is made to coincide with the floor surface 16b of the landing floor 15b on the first floor.

  Next, the operation of the present embodiment having such a configuration will be described.

As a use situation of the elevator apparatus 10, a situation is assumed in which one passenger car 1 a carries 10 passengers and rises from the first floor to the second floor, and then reaches the landing 15 a on the second floor. At this time, the other car 1b connected to one car 1a via the rope 2 carries 12 passengers and descends from the second floor to the first floor, and then the first floor platform 15b. Implant to the floor.
In the present embodiment, when the movable sheave 21 of the adjusting means 30 does not press the rope 2 at all, when the load in one car 1a and the load in the other car 1b are zero, The rope 2 is selected so that the floor surface 8a of the one car 1a coincides with the floor surface 16a of the second floor hall 15a and the floor surface 8b of the other car 1b coincides with the floor surface 16b of the first floor hall 15b. Is done. The length of the rope 2 at this time is called the initial length of the rope 2 in the following description.

  First, the hoisting machine control unit 25 of the control means 6 controls the hoisting machine motor 4 to rotate the hoisting machine sheave 3 shown in FIG. 1 to the right, thereby raising one of the cars 1a and simultaneously raising the other car The car 1b is lowered. Thereafter, when the hoisting machine control unit 25 obtains a signal indicating that the first landing switch 13a of one of the cars 1a has detected the first landing plate 14a provided at the landing 15a on the second floor, The motor 4 is stopped. In this way, one of the cars 1a is landed so that the floor surface 8a of one of the cars 1a coincides with the floor surface 16a of the landing floor 15a on the second floor. In order to prevent one of the cars 1a from suddenly stopping, the hoisting machine control unit 25 is based on a signal relating to the driving amount of the hoisting machine motor 4 sent from the rotational speed detector 5, and When the car 1a ascends toward the landing 15a on the second floor, the speed of one car 1a is reduced immediately before the one car 1a reaches the landing 15a on the second floor.

  When one of the cars 1a is landed so that the floor surface 8a thereof coincides with the floor surface 16a of the second floor hall 15a, the other car 1b is landed on the first floor hall 15b. When the cars 1a and 1b land on the predetermined landings 15a and 15b, the rope 2 is pressed by a predetermined amount in advance by the movable sheave 21 of the adjusting means 30 as will be described later. The car 1b can be landed so that the floor surface 8b thereof coincides with the floor surface 16b of the landing floor 15b on the first floor.

Next, when the car door of one car 1a is opened, ten passengers in one car 1a exit from the car 1a. For this reason, the load in the one car 1a is reduced, whereby the rope 2a on the one car 1a side is elastically contracted. When the amount of shrinkage of one of the car 1a side of the rope 2a at this time (the amount of expansion and contraction) and epsilon _1, one of the car 1a will rise epsilon _1. In this case, the position correction unit 25a of the hoisting machine control unit 25 is based on a signal from the first car position detector 12a so that the bottom surface 8a of one car 1a coincides with the floor surface 16a of the second floor 15a. The hoist motor 4 is controlled to lower one of the cars 1a.

  At this time, since one car 1a and the other car 1b are connected by the rope 2, when the hoisting motor 4 is driven to lower one car 1a, the other car 1b , One of the cars 1a is raised by the amount lowered. Therefore, the position of the other car 1b must be adjusted by the adjusting means 30 so that the floor surface 8b of the other car 1b matches the floor surface 16b of the landing floor 15b on the first floor. Hereinafter, an adjustment method in this case will be described.

  First, the second calculation unit 23b of the adjustment means control unit 23 is configured to control the hoisting machine motor 4 controlled by the position correction unit 25a based on the signal from the rotation speed detector 5 and the signal from the position correction unit 25a. The driving amount is calculated. Next, the 3rd calculating part 23c is based on the information regarding the drive amount of the hoisting machine motor 4 controlled by the position correction part 25a calculated by the 2nd calculating part 23b, and the floor surface of the other passenger car 1b The amount of movement of the movable sheave 21 required to make 8b coincide with the floor surface 16b of the landing 15b on the first floor is calculated. Thereafter, the adjusting means controller 23 controls the driving device 22 of the adjusting means 30 based on the calculated movement amount of the movable sheave 21, and lowers the other car 1b. In this way, the floor surface 8b of the other car 1b is made to coincide with the floor surface 16b of the landing floor 15b on the first floor.

Thereafter, when the car door of the other car 1b is opened, twelve passengers in the other car 1b exit from the other car 1b. For this reason, the load in the other car 1b is reduced, and the rope 2b on the other car 1b side is elastically contracted. When the amount of shrinkage of the other car 1b side of the rope 2b at this time (the amount of expansion and contraction) and epsilon _2, so that the other car 1b is epsilon ₂ rises. Therefore, the position of the other car 1b must be adjusted again by the adjusting means 30. Hereinafter, an adjustment method in this case will be described.

First, the first calculation unit 23a of the adjustment means control unit 23 is based on a signal relating to the driving position of the hoisting machine motor 4 sent from the rotational speed detector 5 and the length of the rope 2b on the other car 1b side. Is calculated. Next, the first calculation unit 23a stores the calculated length of the rope 2b, the signal relating to the load in the other car 1b sent from the second load detection means 11b, and the storage unit 23d. From the information on the elastic constant K of the rope 2, the expansion / contraction amount ε ₂ of the rope 2b on the other car 1b side is calculated. Then, the third computation section 23c, calculated by the first arithmetic unit 23a, based on the amount of expansion or contraction epsilon ₂ information about the other car 1b side of the rope 2b, one floor surface 8b of the other car 1b The amount of movement of the movable sheave 21 that is necessary for making it coincide with the floor surface 16b of the floor 15b is calculated. Next, the adjusting means control unit 23 controls the driving device 22 based on the calculated movement amount of the movable sheave 21, and lowers the other car 1b. In this way, the floor surface 8b of the other car 1b is made to coincide with the floor surface 16b of the landing floor 15b on the first floor.

Thereafter, when a new passenger enters one of the cars 1a and the rope 2a on the one car 1a side is extended by this, the position correcting unit 25a controls the hoisting machine motor 4 in the same manner as described above. As a result, the position of one of the cars 1a is adjusted. As described above, with this adjustment, the other car 1b moves in the opposite direction to the one car 1a by the same amount as the one car 1a. For this reason, as in the case described above, the adjustment means controller 23 controls the drive device 22 of the adjustment means 30 to press the rope 2 with the movable sheave 21 by a predetermined amount. As a result, the position of the other car 1b is adjusted.
Further, when a new passenger enters the other car 1b and the rope 2b on the other car 1b side expands thereby, the adjusting means control unit 23 controls the drive device 22 of the adjusting means 30 in the same manner as described above. By controlling the drive, the rope 2 is pressed by the movable sheave 21 by a predetermined amount. As a result, the position of the other car 1b is adjusted.
Thereafter, the cars 1a and 1b head to the next destination floor in a state where the rope 2 is pressed by a predetermined amount by the movable sheave 21 of the adjusting means 30.

  As described above, according to the present embodiment, the adjustment is provided along the rope 2 between the hoisting machine sheave 3 and the other car 1b, and adjusts the position of the other car 1b by pressing the rope 2. Means 30 and second load detecting means 11b for detecting the load in the other car 1b are provided. And the adjustment means control part 23 of the control means 6 drives the adjustment means 30 based on the drive amount of the hoisting machine motor 5, and the signal from the 2nd load detection means 11b, and presses the rope 2. Thus, the floor surface 8b of the other car 1b is made to coincide with the floor surface 16b of the landing floor 15b on the first floor. In this way, the position of the floor surface 8b of the other car 1b and the floor surface 16b of the landing floor 15b on the first floor can be accurately adjusted with a space-saving and low-cost configuration.

Note that in this embodiment, when one of the car 1a side of the rope 2a due to load variation in one of the car 1a is epsilon ₁ stretch, position correcting portion 25a of the hoisting machine control portion 25, the The example which controls the hoisting machine motor 4 based on the signal from the 1st car position detector 12a was shown. However, the present invention is not limited to this, and the position correction unit 25a of the hoisting machine control unit 25 sends a signal regarding the load change in the one car 1a sent from the first load detection means 11a and the rotation speed. Based on the signal related to the driving amount of the hoisting machine motor 4 and the information related to the elastic constant K of the rope 2 sent from the detector 5, the expansion / contraction amount ε ₁ of the rope 2a on the one car 1a side is calculated. The hoisting motor 4 may be controlled based on the calculation result. In this case, the position correcting unit 25a of the hoisting machine control portion 25, one of the car 1a is to descend by a distance corresponding to the amount of expansion and contraction epsilon ₁ rope 2a, the sent from the rotational speed detector 5 pulses The hoisting motor 4 is driven while checking the number. Thus, even if the rise of one of the cars 1a due to the contraction of the rope 2a is a minute rise that cannot be detected by the first car position detector 12a, the hoisting machine control unit 25 By the position correcting unit 25a, the bottom surface 8a of one of the cars 1a can be made to coincide with the floor surface 16a of the second floor 15a. Further, based on the signals from the rotational speed detector 5 and the position correction unit 25a at this time, the adjusting means control unit 23 of the control device 6 causes the floor surface 8b of the other car 1b to be the floor surface of the landing 15b on the first floor. The adjusting means 30 is driven and controlled so as to match with 16b again.

  In the present embodiment, an example is shown in which the car door of the other car 1b is opened after the car door of one car 1a is opened. However, the present invention is not limited to this, and the car door of the other car 1b may be opened simultaneously with the car door of one car 1a, or the car door of one car 1a. You may open it earlier. In this case, while the car door of the other car 1b is opened, the hoisting machine motor 4 is driven by the position correcting unit 25a of the hoisting machine control unit 25 according to the load change in the one car 1a. As a result, the positions of one car 1a and the other car 1b may change. At this time, the adjusting means control unit 23 of the control device 6 changes the floor surface 8b of the other car 1b to the floor surface 16b of the landing floor 15b on the first floor based on signals from the rotational speed detector 5 and the position correction unit 25a. The adjustment unit 30 is driven and controlled to match.

  In the present embodiment, the adjusting means 30 includes a movable sheave 21 provided so as to press the rope 2 in the horizontal direction between the hoisting machine sheave 3 and the other car 1b, and a movable sheave 21. The example which consists of 22 which drives horizontally is shown. However, the present invention is not limited to this, and as shown in FIG. 3, the adjusting means 30 is a deflection provided to press the rope 2 in the vertical direction between the hoisting machine sheave 3 and the other car 1 b. You may be comprised from the sheave 31 and the baffle sheave drive device 32 which drives a baffle sheave to a perpendicular direction.

  Further, in the present embodiment, an example in which one car 1a and the other car 1b are provided in one hoistway 20 has been shown. However, the present invention is not limited to this, and one car 1a and the other car 1b may be installed in separate hoistways.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. Here, FIG. 4 is a flowchart showing a control method by the control means in the second embodiment of the present invention.

  In the second embodiment shown in FIG. 4, the hoisting machine control unit 25 of the control means 6 is based on the signals from the first load detection means 11a and the second load detection means 11b, and is installed in one car 1a. The difference between the load and the load in the other car 1b is calculated, and when this difference is smaller than a predetermined value, the one car 1a and the other car 1b are wound up so as to land on the predetermined landing respectively. The only difference is that the machine motor 4 is driven and controlled, and the other configuration is substantially the same as that of the first embodiment shown in FIGS. In the second embodiment shown in FIG. 4, the same parts as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As described above, in the present embodiment, the hoisting machine control unit 25 of the control means 6 is based on the signals from the first load detection means 11a and the second load detection means 11b and loads in one of the passenger cars 1a. The hoisting machine calculates the difference between the load in the car 1 and the other car 1b, and when the difference is smaller than a predetermined value, the one car 1a and the other car 1b each land on the predetermined landing. Drive control of the motor 4 is performed.

  Here, the maximum loading capacity of one car 1a and the maximum loading capacity of the other car 1b are both 1000 kg, for example. One car 1a is landing on the second floor landing 15a and the other car 1b is landing on the first floor landing 15b with the car doors open.

  First, the signal from the destination floor designation | designated part (not shown) in the cars 1a and 1b is input into the hoisting machine control part 25 of the control means 6. FIG. Then, as shown in FIG. 4, the hoisting machine control unit 25 confirms that the destination floor is designated in the one car 1a and the other car 1b (step S1). In this case, for example, in one car 1a, the first floor is designated as the destination floor, and in the other car 1b, the second floor is designated as the destination floor. Next, the load in one car 1a is detected by the first load detecting means 11a (step S2). The load in one car 1a is detected as 300 kg, for example. Next, the load in the other car 1b is detected as 850 kg, for example, by the second load detecting means 11b (step S3). Thereafter, a signal from the first load detection means 11a is input to the hoisting machine control unit 25, and simultaneously a signal from the second load detection means 11b is input. In the hoisting machine control unit 25, one of the cars 1a The difference between the load in the car 1 and the load in the other car 1b is determined to be 550 kg. Next, the hoisting machine control unit 25 calculates the load in the car 1a and the load in the other car 1b. It is determined whether or not the difference is smaller than a predetermined value (step S4). Here, the predetermined value is, for example, 50% of the maximum load capacity of 1000 kg of each of the cars 1a and 1b, that is, 500 kg. In this case, the difference 550 kg between the load in one car 1 a and the load in the other car 1 b is larger than a predetermined value 500 kg. For this reason, in the flowchart shown in FIG. 4, the control in the hoisting machine control unit 25 is returned to step S2.

  On the other hand, when the difference between the load in one car 1a and the load in the other car 1b becomes smaller than a predetermined value 500 kg (step S4), the hoisting machine control unit 25 causes each car 1a, 1b. After the car door is closed, the hoisting motor 4 is driven and controlled so that each car 1a, 1b is directed to the designated destination floor (step S5). As described above, when the difference between the load in the car 1a and the load in the car 1b is smaller than 500 kg, two passengers newly get in one car 1a, and thus, for example, one car 1a The difference between the load in the car and the load in the other car 1b is 400 kg. In this way, the hoisting motor 4 is controlled after waiting for the difference between the load in one car 1a and the load in the other car 1b to become smaller than a predetermined value, so that one car Each of the cars 1a and 1b is driven with a smaller driving force than when the hoisting motor 4 is controlled when the difference between the load in 1a and the load in the other car 1b is larger than a predetermined value. be able to.

  Thus, according to the present embodiment, the hoisting machine control unit 25 of the control means 6 is based on the signals from the first load detection means 11a and the second load detection means 11b, and the load in one of the passenger cars 1a. The hoisting machine calculates the difference between the load in the car 1 and the other car 1b, and when the difference is smaller than a predetermined value, the one car 1a and the other car 1b each land on the predetermined landing. Drive control of the motor 4 is performed. For this reason, each car 1a, 1b can be driven with a smaller driving force.

In the present embodiment, an example is shown in which the hoisting motor 4 is driven and controlled when the difference between the load in one car 1a and the load in the other car 1b is smaller than a predetermined value. However, the present invention is not limited to this, and the load in one car 1a landing on the landing 15a on the second floor is greater than the load in the other car 1b landing on the landing 15b on the first floor. And when the difference between the load in one car 1a and the load in the other car 1b is smaller than a predetermined value, the first car 1a and the other car 1b are each set at a predetermined place. The hoisting motor 4 may be driven and controlled so as to land on the floor. In this case, due to the potential energy of one of the cars 1a landing on the second-floor landing 15a located above, the other car 1b landing on the first-floor landing 15b located to some extent is placed. Since it can drive, each car 1a, 1b can be driven with a smaller driving force.
As another form, the load in one car 1a landing on the second floor landing 15a located in the upper side is in the other car 1b landing on the first floor landing 15b located in the lower position. When the load is larger than the load, the hoisting motor 4 may be driven and controlled even if the difference between the two loads is larger than a predetermined value. As a result, the driving force required to drive each car 1a, 1b is always below a certain value.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. Here, FIG. 5 is a block diagram showing the control means in the third embodiment of the present invention.

  The third embodiment shown in FIG. 5 is different only in that an abnormal situation detection means 26 for detecting the occurrence of an abnormal situation is further provided, and other configurations are shown in FIGS. This is substantially the same as the first embodiment. In the third embodiment shown in FIG. 5, the same parts as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The elevator apparatus 10 further includes an abnormal situation detection means 26 that detects that an abnormal situation has occurred. As the abnormal situation, for example, a failure of the hoisting motor 4, the first car position detector 12a, or the second car position detector 12b can be considered. The abnormal situation detection means 26 is connected to the control means 6 as shown in FIG.

When the occurrence of an abnormal situation is detected by the abnormal situation detection means 26, the hoisting machine control unit 25 of the control means 6 stops the hoisting machine motor 4 based on the signal from the abnormal situation detection means 26. Next, in the adjusting means control section 23 of the control means 6, the first calculation section 23 a is based on the signal relating to the driving position of the hoisting machine motor 4 sent from the rotation speed detector 5 and the other of the ropes 2. The length of the rope 2b on the side of the car 1b is calculated. The first calculation unit 23a then sends the length of the rope 2b, the signal regarding the load in the other car 1b sent from the second load detection means 11b, and the elasticity of the rope 2 stored in the storage unit 23d. From the information regarding the constant K, the expansion / contraction amount ε ₂ of the rope 2b on the other car 1b side due to elastic deformation is calculated. Based on ₂ length and stretch amount ε of the calculated other car 1b side of the rope 2b, the position of the other car 1b is calculated in the hoistway 20.

  Thereafter, the third calculation unit 23c of the adjusting means control unit 23 calculates the distance to the nearest landing based on the calculated position of the other car 1b. Furthermore, the third calculation unit 23c determines whether or not the other car 1b can be moved to the nearest landing by the adjusting means 30 based on the distance to the nearest landing. When it is possible to move to the nearest landing, the adjusting means control unit 23 drives and controls the adjusting means 30 including the movable sheave 21 and the driving device 22 to press the rope 2, and the other car 1b. Move to the nearest stop.

  Thus, according to the present embodiment, the elevator apparatus 10 further includes the abnormal situation detection means 26 that detects that an abnormal situation has occurred. When the occurrence of an abnormal situation is detected by the abnormal situation detection means 26, the hoisting machine motor 4 is quickly stopped. Further, when it is possible to move the other car 1b to the nearest landing by the adjusting means 30, the adjusting means 30 is driven and controlled by the adjusting means control unit 23 so that the other car 1b is moved to the nearest place. Move to the platform. In this way, even when an abnormal situation occurs, the other car 1b can be landed at the nearest landing without driving the hoisting machine motor 4.

  In the first to third embodiments, a movable sheave 21 provided along the rope 2 between the hoisting machine sheave 3 and the other car 1b and pressing the rope 2 in the horizontal direction, and a movable type The example in which the adjusting means 30 including the driving device 22 that drives the sheave 21 in the horizontal direction is provided is shown. However, the present invention is not limited to this, and one of the cars 1a can be landed at the nearest platform in the same manner as the other car 1b. That is, as shown in FIG. 1, a second movable sheave 21a that presses the rope 2 in the horizontal direction is provided along the rope 2 between the hoisting machine sheave 3 and one car 1a. The type sheave 21a is driven in the horizontal direction by the second driving device 22a, and the second movable sheave 21a and the second driving device 22a constitute the second adjusting means 30a. As a result, when the hoisting motor 4 is stopped due to the occurrence of an abnormal situation, the adjusting means controller 23 drives and controls the adjusting means 30a including the second movable sheave 21a and the second driving device 22a. One of the cars 1a can be moved to the nearest platform.

Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIGS. Here, FIG. 6 is a block diagram showing the control means in the fourth embodiment of the present invention, and FIG. 7 is a flowchart showing the control method by the control means in the fourth embodiment of the present invention. is there.

  The fourth embodiment shown in FIG. 6 and FIG. 7 differs only in that a rope elongation calculating unit 23e is provided in the adjusting unit control unit 23 of the control unit 6, and the other configurations are the same as those in FIGS. This is substantially the same as the first embodiment shown in FIG. In the fourth embodiment shown in FIGS. 6 and 7, the same parts as those in the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the rope 2 of the elevator apparatus 10, inelastic (plastic deformation) elongation may occur due to deterioration over time. When such inelastic elongation increases, the strength of the rope 2 may be deteriorated. Therefore, in order to ensure safety of the elevator apparatus 10, the rope 2 must be replaced with a new rope before the inelastic elongation of the rope 2 exceeds a certain amount. Therefore, the elevator apparatus 10 according to the present embodiment has a function of calculating the inelastic elongation of the rope 2 so that the replacement time of the rope 2 can be easily known.

As shown in FIG. 6, the adjusting unit control unit 23 of the control unit 6 includes a rope elongation calculating unit 23 e that calculates the inelastic elongation of the rope 2. The effect | action of this Embodiment which consists of such a structure is demonstrated with reference to FIG.
In the present embodiment, because of the inelastic elongation generated in the rope 2, even if the load in one car 1a and the load in the other car 1b are zero, the rope 2 Is the above-described initial length, that is, when the movable sheave 21 of the adjusting means 30 does not press the rope 2 at all, and the floor surface 8a of one of the cars 1a is the floor of the landing floor 15a on the second floor. It coincides with the surface 16a and is longer than the length of the rope 2 when the floor surface 8b of the other car 1b coincides with the floor surface 16b of the landing floor 15b on the first floor.

  In this case, as shown in FIG. 4, the hoisting machine control unit 25 of the control means 6 uses one of the cars 1a and 1b based on a signal from a destination floor designation part (not shown) in the cars 1a and 1b. It is confirmed that the destination floor is not designated in the other car 1b (step S11). Next, the hoisting machine control unit 25 determines that the load in one car 1a and the load in the other car 1b are zero based on the signals from the first load detecting means 11a and the second load detecting means 11b. It is confirmed that there is (step S12). As described above, it is confirmed by steps S11 and S12 that there are no passengers in the cars 1a and 1b and that the loads in the cars 1a and 1b are zero.

  Next, the hoisting machine control unit 25 of the control means 6 drives and controls the hoisting machine motor 4 based on the signal from the first car position detector 12a, and the floor surface 8a of one car 1a is moved to the second floor. It is made to correspond to the floor surface 16a of the platform 15a. At this time, since the inelastic elongation is generated in the rope 2, the floor surface 8b of the other car 1b is positioned below the floor surface 16b of the landing 15b on the first floor. In this case, the distance L (see FIG. 1) between the floor surface 8b of the other car 1b and the floor surface 16b of the first floor landing 15b is the amount of inelastic elongation generated in the rope 2. It corresponds.

  Next, in order to obtain the distance L between the floor surface 8b of the other car 1b and the floor surface 16b of the first floor hall 15b, the adjusting means control unit 23 of the control means 6 uses the second car position detector. Based on the signal from 12b, the adjusting means 30 is driven and controlled to press the rope 2, and the floor 8b of the other car 1b is made to coincide with the floor 16b of the landing 15b on the first floor. The amount of adjustment by the adjusting means 30 at this time, for example, the amount of movement of the movable sheave 21 moved by the driving device 22 is recorded in the rope elongation calculating section 23e of the adjusting means control section 23.

  Next, the rope elongation calculating unit 23e calculates the adjustment amount of the position of the other car 1b by the adjusting means 30 based on the recorded movement amount of the movable sheave 21. As is apparent from the above, this adjustment amount corresponds to the above-mentioned distance L, and the distance L corresponds to the amount of inelastic elongation generated in the rope 2. In this way, the amount of inelastic elongation occurring in the rope 2 is calculated.

  As described above, according to the present embodiment, the adjustment means control section 23 of the control means 6 is provided with the rope elongation calculation section 23 e that calculates the inelastic elongation of the rope 2. And the adjustment means control part 23 controls the adjustment means 30 based on the signal from the 2nd car position detector 12b, and presses the rope 2, The floor surface 8b of the other car 1b is made into the first floor. It is made to correspond to the floor surface 16b of the platform 15b. Thereafter, the rope elongation calculation unit 23e calculates the amount of inelastic elongation generated in the rope 2 based on the adjustment amount by the adjustment means 30. In this way, the inelastic elongation generated in the rope 2 can be calculated with a simple configuration. As a result, it is possible to prevent the rope 2 having deteriorated strength from being used.

  In the present embodiment, an example is shown in which it is confirmed whether the load in one car 1a and the load in the other car 1b are zero (step S12). However, the present invention is not limited to this, and in step 12, the load in one car 1a and the load in the other car 1b are small enough not to cause a large elastic elongation of the rope 2. Can be confirmed. For example, if the load in one car 1a and the load in the other car 1b are 10 kg or less, the process may proceed to the next step S13.

DESCRIPTION OF SYMBOLS 1a One car 1b The other car 2 Rope 2a One car side rope 2b The other car side rope 3 Hoisting machine sheave 4 Hoisting machine motor 5 Speed detector 5a Pulse generator 5b Pulse detector 6 Control means 7a Traction sheave of one car 7b Traction sheave of the other car 8a Floor surface of one car 8b Floor surface of the other car 10 Elevator device 11a First load detection means 11b Second load detection means 12a First car position detector 12b Second car position detector 13a First landing switch 13b Second landing switch 14a First landing plate 14b Second landing plate 15a Second floor landing 15b First floor landing 16a Second floor landing floor 16b First floor landing floor 20 Hoistway 20a One car side Descending wall 20b Hoisting wall on the other car side 21 Movable sheave on the other car side 21a Movable sheave on the one car side 22 Drive device on the other car side 22a Drive on one car side Device 23 Adjustment means control section 23a First calculation section 23b Second calculation section 23c Third calculation section 23d Storage section 23e Rope elongation calculation section 25 Hoisting machine control section 25a Position correction section 26 Abnormal condition detection means 27 Rope support member 30 The other Car side adjustment means 30a Car side adjustment means 31 Warp sheave 32 Warp sheave drive device

Claims (4)

One car that goes up and down between multiple elevator platforms,
The other car that goes up and down between multiple elevator platforms,
A rope connecting one car and the other car;
A hoist sheave that engages the rope;
A hoist motor that drives the hoist sheave;
Control means for controlling the hoist motor;
A position detector for one of the cars that detects the position of one of the cars when one of the cars reaches the first landing;
An adjusting means provided along the rope between the hoisting machine sheave and the other car, and adjusting the position of the other car by pressing the rope;
Load detection means for the other car for detecting the load in the other car, and
The control means controls the hoisting machine motor based on a signal from the one car position detector to drive the hoisting machine motor by a predetermined driving amount, and the floor surface of the one car is a floor of a predetermined first landing. After that, the adjusting means is controlled based on the driving amount of the hoisting motor and the signal from the load detecting means to press the rope, and the floor surface of the other car is moved to the predetermined second landing. An elevator apparatus characterized by matching with the floor surface of the elevator. It further comprises an abnormal situation detection means for detecting that an abnormal situation has occurred,
The control means stops the hoisting machine motor based on the signal from the abnormal situation detecting means, and then controls the adjusting means based on the drive position of the hoisting machine motor and the signal from the load detecting means. The elevator apparatus according to claim 1, wherein a rope is pressed to move the other car to the nearest landing. The vehicle further comprises load detection means for one of the cars for detecting a load in one of the cars,
The control means calculates a difference between the load in one car and the load in the other car based on signals from one car load detecting means and the other car load detecting means, The hoisting motor is controlled so that one car and the other car each land on a predetermined landing when the difference is smaller than a predetermined value. Elevator device. One car that goes up and down between multiple elevator platforms,
The other car that goes up and down between multiple elevator platforms,
A rope connecting one car and the other car;
A hoist sheave that engages the rope;
A hoist motor that drives the hoist sheave;
Control means for controlling the hoist motor;
A first car position detector that detects the position of one car when one car lands on the first landing;
A second car position detector for detecting the position of the other car when the other car reaches the second landing;
An adjustment means provided along the rope between the hoist sheave and the other car, and adjusting the position of the other car by pressing the rope;
The control means controls and drives the hoist motor based on the signal from the first car position detector, and matches the floor surface of one car to the floor surface of the first landing, and then The control means is controlled on the basis of the signal from the car position detector 2 and the rope is pressed so that the floor of the other car coincides with the floor of the second landing, and then the position of the other car is An elevator apparatus characterized in that the elongation of the rope is calculated based on the adjustment amount.

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