JP2001002346A - Rope type elevator and rope type elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a rope type elevator capable of making a machine room of the elevator to the utmost limit, enhancing production efficiency of the elevator, reducing the installation manhours, making maintenance-inspection easy, and being easily renewed. SOLUTION: In a rope type elevator provided with an elevator car 1 operating along elevator guide rails 14, a counter weight 16 operating along a counter weight guide rail, and a driving machine 4 having a traction sheave 5 which is adapted to be engaged with a winding rope for hanging the elevator car and the counter weight, the driving machine 4 is provided with a rotary electric motor for driving the traction sheave, and the driving machine is mounted on a part of a structure 2 comprizing the elevator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rope type elevator and a system configuration of the rope type elevator.
The present invention relates to a machine room-less rope type elevator that is easy to maintain and easily installed, and a system configuration thereof.

[0002]

2. Description of the Related Art A conventional elevator having a machine room employs a method in which a machine room is installed in a hoistway at a top portion, an intermediate portion on an elevator shaft, and further below a basement.

On the other hand, in a conventional rope traction elevator without a machine room, as in Japanese Patent No. 259388, an elevator driving device is located at the top of an elevator shaft (in a hoistway) and an elevator car is provided. At the top of the shaft required on the aisle, the shaft space required by the elevator car on the aisle and / or the overhead extension of the shaft space required by the elevator car and the wall of the elevator shaft Was located in the space between.

Japanese Unexamined Patent Publication (Kokai) No. 62-31686 discloses a conventional machine-room-less rope type elevator in which a hoist is mounted on a car and a hoist is mounted on a side portion of a hoistway of the elevator. A device in which a manual winding device is attached correspondingly is disclosed.

[0005] Another example is disclosed in JP-A-6-255.
As disclosed in Japanese Patent Publication No. 595, an elevator drive (motor) is disposed in a counterweight.

Further, as another rope-type elevator without a machine room, as disclosed in Japanese Patent Application Laid-Open No. 5-78059, a linear motor for driving the elevator is mounted on a car or a counterweight, and a control panel is provided. Some are mounted on elevator cars.

[0007]

In an elevator having a conventional machine room, when creaking occurs in a structure of a building due to aging, earthquake, or the like, a deformation stress due to bending, bending, expansion and contraction, etc. is applied to the elevator shaft. This stress is directly applied to the beam (machine beam) on which the drive is installed. As a result, a load is not evenly applied to the hoisting rope directly connected to the driving machine, and the uneven load causes a set of a plurality of hoisting ropes wound around the sheave to have different lengths. The burden of maintenance such as adjusting the length of the work is greater than ever. Also,
The imbalance in the rope length caused by the unbalanced load applied to the rope causes the vibration of the elevator car, and the stop position (landing position) fluctuates, thereby deteriorating basic performance such as ride comfort of the elevator. . Furthermore, since the drive is installed on the elevator shaft in the hoistway, the method of tensioning the hoisting rope is complicated, and there are problems such as not only maintenance but also installation man-hours. In the case of renewal, a lot of time will be spent similarly.

On the other hand, in a conventional elevator without a machine room, a driving machine is provided along a hoistway on a side portion of a car, that is, a space between a shaft space required by the elevator car and a wall of the elevator shaft. , The floor area required for the hoistway is inevitably increased.

For example, Japanese Unexamined Patent Publication (Kokai) No. 62-31686 discloses an elevator in which a hoistway is provided on a side portion.
A manual take-up device is installed, and it is necessary to arrange main ropes, hoisting machines, guide wheels, etc. by extending to the side of the car along the hoistway, which not only complicates the configuration, but also It is conceivable that the floor area of the building increases.

Japanese Unexamined Patent Publication No. 5-78059 discloses a linear motor having a primary winding 6 mounted on a counterweight 5 and generating a thrust relative to the primary winding. A secondary conductor 8 is arranged on the side of the car along the hoistway 1. Primary winding of linear motor 6
Although not shown in the drawing, the configuration in which the car is mounted on a car is not shown.
It is necessary to provide a configuration that extends along the side of the car along the road, which not only complicates the configuration but also increases the floor area required for the hoistway.

The relationship between the drive mechanism, for example, the primary and secondary windings of the linear motor, is completed by on-site installation work, so that the work period for the installation work is lengthened, and the wiring between the drive machine and the control device is increased. The length and the number of wiring steps cannot be reduced, and there is a limit to improvement in reliability.

The present invention has been proposed to solve such a problem of the conventional rope type elevator.

[0013] It is an object of the present invention to reduce the size of a driving machine to the utmost and to reduce the configuration equivalent to the conventional machine room to the utmost.
Moreover, it is an object of the present invention to provide a rope-type elevator and a rope-type elevator system which do not need to increase the floor area of the hoistway and which is substantially free of a machine room.

Another object of the present invention is to significantly reduce the on-site installation work, realize a short delivery time, shorten the wiring length between the driving device and the control device, reduce the wiring man-hour, and improve the reliability. It is an object of the present invention to provide a rope type elevator and a rope type elevator system with improved operability.

Another object of the present invention is to provide a rope type elevator and a rope type elevator system which can further simplify maintenance and inspection work.

[0016]

SUMMARY OF THE INVENTION The above-mentioned object is achieved by using a rope type elevator as an elevator car integrated with a driving machine. That is, the present invention provides an elevator car that operates along an elevator guide rail, a counterweight that operates along a counterweight guide rail,
An elevator having a drive having a traction sheave engaged with a hoisting rope suspending the counterweight, wherein the drive includes a rotary motor driving the traction sheave; And the rotary electric motor,
It is mounted on a part of a structure constituting the elevator car.

According to the present invention, since the entire drive having a rotary motor as a drive source for the traction sheave is directly mounted on the frame of the elevator car, the structure equivalent to the conventional machine room can be miniaturized to the utmost. It is possible to provide a rope-type elevator and a rope-type elevator system that do not need to increase the floor area of the hoistway and that is substantially machine-room-less.

Further, since the elevator car frame is manufactured on a production line in a factory, the drive car can be installed at the same time as the frame is assembled by using the elevator car integrated with the drive machine. Dramatically reduced and short delivery time can be realized. That is, since the entire driving device is installed on the frame of the elevator car, even if the guide rail in the hoistway is deformed, there is almost no effect on the traveling performance of the elevator. In addition, since the entire drive unit is installed on the elevator car frame, it can be assembled in the same process on the elevator car frame production line, so that the number of on-site installation steps can be reduced.

Further, by using the elevator car integrated with the driving machine, not only the wiring man-hour which can greatly reduce the wiring length between the driving machine and the control device but also the reliability can be improved.

Further, by using the elevator car integrated with the driving machine, not only the maintenance and inspection can be carried out collectively, but also the effect of simplifying the operation of replacing the elevator car at the time of renewal has an unprecedented effect.

According to the present invention, an elevator car integrated with a driving machine including a door control device is provided.
As a method of minimizing the components of the drive system mounted on the ceiling frame of the elevator car, the drive mechanism used in the elevator car door opening / closing mechanism mounted on the ceiling of the elevator car is used to drive the elevator car. There is a feature in the configuration that is also used by the machine.

That is, there is provided a torque transmitting mechanism for transmitting the torque generated from the driving device of the elevator car to the door opening / closing mechanism only when the door is opened / closed. The torque transmission mechanism includes an electromagnetic clutch, a pulley directly connected to the electromagnetic clutch, and electromagnetic clutch control means for controlling the electromagnetic clutch. By applying a belt between the pulley and the pulley attached to the door opening / closing mechanism, the torque generated by the drive of the elevator car is transmitted to the door opening / closing mechanism. In this configuration, since the elevator car moves even when the door is operated, the connection ratio between the pulley attached to the elevator car side and the pulley attached to the door opening / closing mechanism side is large, that is, the outer diameter of the former pulley is the latter. Large enough compared to the outside diameter of the pulley. This degree is set to a value such that the elevator car stays within the allowable landing error range during the door opening / closing operation. In this configuration, although the same driving machine is used, the elevator car and the door are controlled differently, so that the control structure is the same and the constants of the compensators of the control system are different. Therefore, two control systems are provided, that is, an elevator car control system and a door control system. The electromagnetic clutch control means includes a door open / close operation determining means and an electromagnetic clutch operation signal generating means. This door opening / closing operation determining means includes:
The determination whether to transmit the torque generated from the drive unit to the elevator traction sheave side or to the door opening / closing mechanism is performed based on the speed command of the control system of the elevator car or the elevator car position information.

Further, the electromagnetic clutch operation signal generating means includes:
A door operation start signal is generated based on the information obtained from the door opening / closing operation determining means. This door operation start signal
Switching between the above two control systems and connection with a door opening / closing mechanism by an electromagnetic clutch are performed.

As described above, by providing an elevator car integrated with a drive unit including a door control device, it is possible to provide a rope type elevator and a rope type elevator system in which a machine room is further reduced in size and weight. In other words, the driving device conventionally used for door opening and closing driving can be omitted, and the door can be opened and closed only by the driving device for driving the elevator car. In this case, the structure of the elevator car is greatly simplified, and the weight of the elevator car itself can be reduced. Furthermore, since the capacity of the power converter for driving the elevator car is larger than the capacity of the power converter for the door driver, the power converter for driving the elevator car and its controller are used to control the power converter for opening and closing the door. Also, there is an effect that the controller can also be used.

In addition, since the elevator car and door are integrated into a drive controller, the power wiring and signal wiring between the conventional elevator car drive controller and the door opening / closing drive controller are greatly reduced, and electromagnetic noise is reduced. This is effective in reducing the wiring and the wiring time.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows an external perspective view of a rope type elevator system according to one embodiment of the present invention. This embodiment is an example in which a driving device for driving an elevator car is mounted on a frame of an elevator car. In the elevator car 1, the structure of the car is formed by the frame 2, and the strength of the car is maintained by the foom. The structure of the elevator car 1 includes a door 3 for passengers to enter and exit, a room for carrying passengers (an interior part, not shown), and a space between the room and the frame 2 on the frame of the elevator car. And a sound absorbing material for absorbing vibration and noise, and a vibration isolating material (not shown).

A drive system integrated with the frame 2 is provided on the frame 2. That is, a driving machine 4 for generating a driving force for moving the elevator car 1 up and down is directly installed on the frame 2. The driving machine 4 uses a rotary electric motor, preferably an induction motor or a permanent magnet electric motor as a driving source. A traction sheave 5 and an electromagnetic brake 6 are directly connected to a rotation shaft of the driving device 4. It is preferable that the electric motor be a flat motor in which a flat structure, that is, a stator coil and a rotor coil or a permanent magnet are arranged radially outward of the electric motor and face each other in the axial direction. Similarly, it is desirable for the electromagnetic brake to have a flat coil structure.

Further, although not shown, a speed sensor and a position sensor for controlling the driving machine 4 (only a speed sensor when the driving machine 4 is an induction motor, and a speed and a speed sensor when the permanent magnet type motor is used). Position sensor) is directly connected to the rotating shaft of the driving machine 4. The driving machine 4 is controlled by a control device 8 mounted on the frame 2 of the elevator car 1.

A plurality of winding ropes 10 are wound around the traction sheave 5, and the plurality of winding ropes 10 are guided to pulleys 7 provided at the ends of the frame 2. The hoisting rope 10 is
In order to secure a frictional force between the pulley 7 and the pulley 7, the hoisting rope 10 is wound once or more to increase the contact area with the pulley 7, and the end is fixed to the fixing plate or the beam 11 on the ceiling. .

The other end of the hoisting rope 10 is (turned)
After being wound around the turning pulley (moving pulley) 14 installed on the counterweight 16 between the guide rails 14 via the pulleys 12 and 13, the beam (fixed plate) 11 on the ceiling
Fixed to

The hoisting rope 10 thus stretched
The traction sheave 5 is driven by the rotation of the drive unit 4.
The elevator car 1 and the counterweight 16 move up and down accordingly. In this case, the counterweight 16 moves up and down along the guide rails 15 and 17 in the elevator shaft in the same direction as the elevator car 1. The traveling of the elevator car 1 is controlled by the control device 8. 9 is a door opening / closing drive device for opening / closing the door of the elevator car. The driving device 4 and the door opening / closing driving device 9 are respectively installed on the same plane edge of the frame 2 of the elevator car 1. In addition, although not shown, an emergency stop or the like as a safety device is provided.

Next, FIG. 2 shows an example of a block configuration of the control device 8 when the driving device 4 is a permanent magnet type electric motor.
The acceleration commanding means 100 of the control device 8 generates a pattern which is considered (decided) in advance so that a comfortable ride can be obtained with respect to the vertical movement of the elevator car 1 and inputs the pattern to the speed commanding means 110. . The speed command generation means 110 generates a speed command ω * by integrating the acceleration command. The difference (deviation) between the speed command ω * and the speed ω obtained from the speed detecting means 270 attached to the rotating shaft of the driving machine 4 by the adder / subtractor 120 is obtained.
This difference is input to the speed control means 130. The speed control means 130 is composed of a compensator that operates so as to eliminate the deviation, for example, a proportional (P) + integral (I). The speed control means 130 generates a torque command τ * such that a torque such that the deviation becomes zero is generated from the driving machine 4.

The torque command τ * is converted into a torque current command It * (∝τ * /
φ, φ: magnetic flux). This torque current command It
* And an exciting current Im * for generating a magnetic flux φ (∝φ, φ:
Using the permanent magnet type brushless synchronous motor, the two currents It * and Im * are obtained by using the rotor position θ (= ∫ωd) obtained from the rotor position detecting means 260 of the driving machine 4.
Using the rotating coordinate system synchronized with t), the coordinate conversion means 150 converts the three-phase AC current command i * (three-phase AC current commands iu *, iv *, iw * are obtained, but not shown). Convert.

The AC current command i * obtained by the coordinate conversion means 150 is converted by the adder / subtractor 160 into two-phase AC currents iu and iv detected from the current sensor 240.
And the remaining one-phase alternating current (iw = − (iu + i) flowing from the two-phase alternating current to the primary winding of the driving machine 4.
The deviation from the AC current i for the three phases from which v)) was determined (there is a three phase, but for simplicity, represented by i) is taken. This deviation is input to the current control means 170.

The current control means 170 is a compensator constituted by a proportional (P) and an integral (I), and has a voltage command E * (for three phases, so as to eliminate the above-mentioned current deviation. (Represented by E *). This voltage command E * is a modulation wave for PWM control,
It is input to the WM control means 180. The PWM control means 180 compares the modulated wave with the carrier to determine
Form a WM signal. This PWM signal is applied to the gate of a power switching element (not shown) of the PWM inverter 230.

The PWM inverter 230 temporarily converts the three-phase AC power supply 200 into a DC voltage by the forward converter 210. Based on the DC voltage smoothed by the smoothing capacitor 220, the DC voltage generates a variable frequency / variable voltage AC voltage corresponding to the voltage command E *. The driving machine 4 is driven by the variable frequency / variable voltage AC voltage. As the driving machine 4, a permanent magnet type brushless electric motor having a thin multi-pole structure is desirable from the viewpoint of miniaturization. However, since this motor requires a magnetic pole position sensor, an induction motor is also effective for a small elevator.

Further, instead of a permanent magnet type synchronous motor having a general magnetic pole position sensor, a rotor having a hybrid structure of a magnet assembly portion and a short-circuit ring coil is formed using a common primary winding frame of the motor. The motor structure is such that it can generate torque as an induction motor and a permanent magnet type synchronous motor.

Until the elevator starts, torque is generated from the induction motor unit. After the start, the magnetic pole position is determined based on the induced voltage generated in the induction motor unit.
Based on this position information, a permanent magnet type synchronous motor generates torque. Furthermore, under high loads such as acceleration,
Torque is generated by both the induction motor section and the permanent magnet type synchronous motor section, and in the high-speed region where the induced voltage increases, the torque is mainly generated mainly by the induction motor section.
With the electric motor having such a structure, elevator efficiency can be moved without a position sensor.

As another example, when the drive unit 4 has an outer rotor structure and an electric motor having a traction sheave function in which a hoisting rope can be wound around the outer rotor (rotor side), a thinner structure is obtained. An electric motor can be realized.

According to the present invention, the integrated drive system is provided directly on the frame of the elevator car as shown in FIG. It is possible to provide a machine room-less rope-type elevator in which a configuration corresponding to a room is miniaturized as much as possible.

Further, the driving machine, the electromagnetic brake, the speed and the rotational position sensor of the driving machine, etc. are also directly installed on the frame of the elevator car, and are installed on the assembly line of the factory under exactly the same conditions as those actually installed. Can be adjusted with
Installation man-hours on site can be greatly reduced.

Also, when the elevator is renewed, there is also an effect that if the elevator car provided with the drive system is replaced as it is, the drive system can be replaced at a stroke.

FIG. 3 is an external perspective view of a rope type elevator system according to another embodiment of the present invention. The difference from the drive system of FIG. 1 is that the drive unit 4 mounted on the elevator car 1
The structure is as follows. The feature of this embodiment is that a traction sheave 51 is provided at both ends of a thin and flat drive unit 4 with an electromagnetic brake 6 added. The hoisting rope wound on the left and right traction sheaves 51 is fixed to the ceiling beam or the fixing plate 11 via a pulley 71 provided at the other end of the frame 2.

On the other hand, the other end of the hoisting rope 10 wound around the traction sheave 51 is wound by the pulley 141 installed on the counterweight 161 via the turning pulleys 121 and 131 fixed to the beam 11. After that, it is fixed to the ceiling beam (fixed plate). in this case,
The driving machine 4 is controlled by the control device 8, but the configuration and control method of the control device 8 are the same as those of the embodiment shown in FIG.

According to the structure of this embodiment, since the elevator car 1 can be lifted in a state of being suspended at four points, the balance can be maintained even when the elevator car runs, so that the characteristics of the riding comfort can be obtained. The effect appears.

FIG. 4 is an external perspective view of a rope type elevator system according to another embodiment of the present invention.
That is, an embodiment in which the drive unit 4 in which the traction sheave 52 and the electromagnetic brake 6 are integrated is attached to the side surface of the elevator car 1 is shown. An electric motor having an ultra-thin and flat structure is used as the driving device 4 for the frame 2 of the elevator car 1.

In the example shown in FIG.
However, in consideration of the balancing balance (center of gravity) of the elevator car 1, the elevator car 1 may be arranged on the opposite side of the arrangement in FIG.

The winding of the hoisting rope is performed by winding the hoisting rope 10 around the traction sheave 52 of the drive unit 4 and then passing through the two pulleys 72 installed at the bottom of the elevator car 1 to the beam (fixed plate) 11 on the ceiling. Fixed to
The other end of the hoisting rope 10 is fixed to the beam (fixed plate) 11 on the ceiling via the pulleys 122 and 132 attached to the fixed plate 11 and the pulley 142 installed on the counterweight 16. Is done. This drive system is controlled by the control device 8. The configuration and control method of the control device 8 are the same as those of the embodiment shown in FIG.

In the configuration of this embodiment, since the driving machine 4 and the control device 8 can be mounted on the side of the elevator car 1, the size of the elevator car itself can be reduced, and the drive system can be downsized.

FIG. 5 is an external perspective view of a rope type elevator system according to another embodiment of the present invention.
That is, an embodiment is shown in which the door opening / closing drive mounted on the frame 2 on the ceiling of the elevator car 1 is also used as the drive 4 of the elevator car. The main configuration is shown below. The driving machine 4 includes a traction sheave 5
4. An electromagnetic brake 6 is provided, and an electromagnetic clutch 15 is added to a rotating shaft of the driving machine. The electromagnetic clutch 15 is a speed command issued from the control device 8, or
The connection / opening operation is performed by a position detection signal emitted from a shielding plate (neither is shown in FIG. 5) installed for detecting the position of each floor (floor). The other end of the electromagnetic clutch has a pulley 71 and a connecting shaft 17 of a door opening / closing mechanism.
Are connected to each other by a belt 16, and transmit torque generated by the driving machine 4 to the connecting shaft 17. The transmitted driving force is input by the door opening / closing drive device 9 and acts as a force for opening and closing the door 3.

The ratio of the outer diameter of the pulley 71 to the outer diameter of the pulley 72 is set to a large value so that the elevator car 1 is maintained within the allowable landing error when the door opening / closing operation mode is entered (normally). , 10; 1 or more). That is, when the electromagnetic clutch 15 is connected, the elevator car 1 itself also moves with the operation of the door opening / closing drive device 9, so that the operation range is kept within the allowable landing error range.

FIG. 6 shows a control block diagram of the embodiment of FIG. This control block is obtained by adding a door control system to the control system of the elevator car shown in FIG. In addition, FIG. 7 shows that the torque generated by the drive unit 4 by the operation of the electromagnetic clutch 15 in the embodiment of FIG. 5 is transmitted to the door opening / closing drive device 9, and the elevator car 1 is operated while the door opening / closing drive device 9 is operating. When operating within the allowable landing error,
3 shows a time chart.

In the control block of FIG. 6, the control system of the elevator car has already been described in the description of FIG. 2 and therefore will be omitted, and only the door control system will be described with reference to FIG. This door control system inputs a speed command issued from a speed command generating means 110 in the elevator car control system to a door opening / closing operation determining means 111. The door opening / closing operation judging means 111 judges whether the magnitude of the speed command has become zero, and when it reaches zero, the electromagnetic brake 6 of the driving machine 1 is operated to stop the elevator car (FIG. 7). Time t1). Information that the speed command has become zero is input to the electromagnetic clutch operation signal generating means 112. The electromagnetic clutch operation signal generating means 112 generates a door operation start signal.

This door operation start signal is input to the speed command generating means 113 and the gate signal switching means 190 of the door control system. When the door operation start signal is input to the gate signal switching means 190, the PWM signal obtained from the PWM control means 180 of the elevator control system is converted to the P signal of the door control system.
Switching to the PWM signal obtained from the WM control means 181 causes the PWM inverter 230 to be controlled by the door control system.

When the other door operation start signal is input to the speed command generating means 113 (time t1), the speed command generating means 113 generates an elevator door speed command as shown in FIG. I do. The speed control of the driving machine 4 is performed by the speed command. This speed command is
The command is very small compared to the magnitude of the acceleration / deceleration command of the elevator car.

This is because the elevator car moves while the door is being opened and closed, so that the movement distance is kept within the landing tolerance. in this case,
The outer diameter ratio of the pulley 71 on the driving machine 4 side and the pulley 72 on the door driving side is selected to be a large value. For example, even if a connection ratio of 10: 1 or more, that is, a speed command of 1/10 or less of the maximum speed of the elevator car is given, the pulley 72 on the door side operates with a speed increase of 10 times or more. As a result, the door can operate as before, even though the elevator car hardly operates.

FIG. 7 shows this state. FIG. 7A shows a speed command for an elevator car or an elevator door,
FIG. 7B shows a traveling locus of the elevator car.

When a speed command for deceleration is given to the elevator car, as shown in FIG. 7B, a position slightly lower than the target position within the allowable landing error from the target position when the vehicle descends, and a target stop position when the vehicle rises. The elevator car is temporarily stopped within the landing tolerance slightly before (time t1).

In this state, an elevator door speed command as shown in FIG. 7A is generated as a door open operation start signal. That is, from the time t1, an elevator door speed command is given at a predetermined acceleration, the electromagnetic brake 6 is released, the drive unit 4 is operated, and the door opening operation is started.

Until the opening operation of the door is completed,
As shown in FIG. 7 (B), the elevator car moves toward the target position until the time t2 when the door is opened both when descending and when ascending. At time t2 when the door is completely opened and the elevator car stops, a predetermined speed command that almost reaches the target position is given as the speed command of the elevator door.

When the door is open, the electromagnetic brake 6 operates to completely stop the operation of the drive unit 4 as shown in FIG. 7B.

When the door is to be closed after time t2, the electromagnetic brake 6 is opened to generate a speed command having the opposite polarity to that at the time of opening the door, as shown in FIG. Drive in reverse to close the door. At this time, as shown in FIG. 7B, the elevator car 1 slightly descends from the target stop position within the allowable landing error range and stops at time t3. Elevator car call button signal (not shown)
Is included, the system is switched to the elevator car control system in accordance with the command, and a speed command for the elevator car is generated. In response to the speed command of the elevator car, an ascending or descending operation is started as shown in FIG.
If the call signal does not enter the elevator car,
At time t3, the electromagnetic brake 6 operates, and the elevator car continues to stop at that position.

The speed control of the driving machine 4 corresponding to the speed command of the elevator door shown in FIG. 7A has the same configuration as that of the elevator car control system. The speed control means 131, the torque current command generation means 141, It comprises a coordinate conversion means 151, a current control means 170, and a PWM control means 180. The operation principle is the same as that described with reference to FIG.

According to the configuration shown in FIG. 5, since one driving machine and its control device can operate the elevator car to open and close the door, the equipment mounted on the elevator car frame can be used. Therefore, there is an effect that an elevator system without an ultimate machine room can be realized because of minimization.

In all of the embodiments shown in FIGS. 1, 3, 4, and 5, the power cable moves in conjunction with the travel of the elevator car, and the power cable may be worn. . To this end, it is conceivable to provide a power supply lead-in line for drawing power in advance, that is, a trolley line for supplying power to a fixed portion in a hoistway such as a guide rail. The above problem can be solved by equipping the elevator car with a means similar to a pantograph from the trolley wire and receiving power while the elevator car is running. This can greatly reduce the wiring work.

[0066]

According to the present invention, the entire drive having a rotary electric motor as a drive source of the traction sheave is directly mounted on the frame of an elevator car. It is possible to provide a rope-type elevator and a rope-type elevator system that are substantially machine-room-less and require no increase in the floor area of the hoistway.

Also, since the elevator car frame is manufactured in a production line in the factory, the drive unit can be installed at the same time as the frame assembly by using an elevator car integrated with the drive unit. Work is greatly reduced, and short delivery time can be realized.

Further, by using an elevator car integrated with a driving machine, not only the wiring man-hour which can greatly reduce the wiring length between the driving machine and the control device, but also the reliability can be improved.

Further, by using the elevator car integrated with the driving machine, not only the maintenance and inspection can be carried out collectively, but also the effect that can be simplified by replacing the elevator car every time at the time of renewal is provided.

Further, by using an elevator car integrated with a drive unit including a door control device, a rope type elevator and a rope type elevator system in which the machine room is further reduced in size and weight can be provided.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a part of a rope type elevator system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of a control block of the rope type elevator system of FIG. 1;

FIG. 3 is an external perspective view showing a cross section of a part of a rope type elevator system according to another embodiment of the present invention.

FIG. 4 is an external perspective view showing a cross section of a part of a rope type elevator system according to another embodiment of the present invention.

FIG. 5 is an external perspective view of a cross section of a part of a rope type elevator system according to still another embodiment of the present invention, in which a driving machine also serves as a door control.

FIG. 6 is a diagram showing a configuration example of a control block of the embodiment in FIG. 5;

FIG. 7 is a time chart for explaining the operation of FIG. 5;

[Explanation of symbols]

200: three-phase AC power supply, 210: forward converter, 220: smoothing capacitor, 230: PWM inverter, 240: current sensor, 4: drive motive, 260: position detecting means, 27
0: speed detection means, 100: acceleration command generation means, 11
0: speed command generating means, 120, 121, 160, 16
DESCRIPTION OF SYMBOLS 1 ... Adder / subtractor, 130, 131 ... Speed control means, 14
0, 141... Torque current command generating means, 150, 151
... Coordinate conversion means, 170, 171 ... Current control means, 18
0, 181, PWM control means, 190, gate signal switching means, 111, door opening / closing operation determining means, 112, electromagnetic clutch actuation signal generating means, 1, elevator car, 2, frame, 3 door, 4 drive, 5 traction sheave, 6 electromagnetic brake, 7, 12, 13, 14, 72,
122, 123, 132, 133, 142, 143 ... pulley, 8 ... control device, 9 ... door open / close drive device, 10 ... hoisting rope, 11 ... beam (fixed plate), 15 ... guide rail, 16 counterweight

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Shinya Yato 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Within Hitachi Research Laboratory, Hitachi, Ltd. Inside Hitachi Machinery Research Laboratory (72) Inventor Akihiro Omiya 502 Kandatecho, Tsuchiura-shi, Ibaraki Prefecture Inside Machinery Research Laboratories, Inc. Inside Mito Plant (72) Inventor Hiroshi Nagase 1070 Ma, Hitachinaka-shi, Ibaraki Prefecture F-term in Mito Plant, Hitachi, Ltd.F-term (reference)

Claims (14)

[Claims] 1. An elevator comprising: an elevator car operating along an elevator guide rail; and a drive having a traction sheave engaged with a hoisting rope that suspends the elevator car and counterweight. A rope type elevator including a rotary electric motor for driving the traction sheave, wherein the drive unit is mounted on a structure constituting the elevator car. 2. The rope type elevator according to claim 1, wherein said rotary motor is a permanent magnet type brushless motor or an induction motor. 3. The driving machine according to claim 1, wherein the driving machine includes a rotary motor having a flat and thin structure and an electromagnetic brake, and a rotating shaft of the rotary motor is directly connected to the traction sheave and the electromagnetic brake. Rope type elevator. 4. The drive unit according to claim 1, wherein the drive unit is mounted near a position where the center of gravity of the elevator car is projected on a horizontal plane or a vertical plane along a frame of the elevator car. Rope elevator. 5. A driving device and a door opening / closing driving device for driving a door of the elevator car to open and close, wherein the driving device and the door opening / closing driving device are mounted on a same frame as the elevator car. The rope type elevator according to claim 1 or 2, wherein the elevator is installed on a surface. 6. The rope type elevator according to claim 1, wherein the drive unit is installed on the frame that forms an upper surface of the elevator car. 7. The rope according to claim 3, wherein the driving device having a flat and thin structure is installed on the frame on one of left and right sides with respect to an opening / closing door opening of the elevator car. Type elevator. 8. An elevator car drive having an elevator car operating along an elevator guide rail, a traction sheave engaging a hoisting rope suspending the elevator car and counterweight, and an opening / closing door for the elevator car. An elevator having a door driving device for driving the elevator car, wherein the elevator car driving device and a control device for controlling the elevator car driving device are mounted on a part of the structure of the elevator car; A rope-type elevator for controlling a door driver for operating a car opening / closing door. 9. An elevator car drive having an elevator car operating along an elevator guide rail, a traction sheave engaging a hoisting rope suspending the elevator car and counterweight, and an opening / closing door for the elevator car. An elevator having a door driving device for driving the elevator car, the elevator car driving device, a control device for controlling the elevator car driving device, and a torque generated by the elevator car driving device, on the ceiling frame of the elevator car. Install driving force transmission means to transmit to the driving machine,
A rope type elevator, wherein the door driving device opens and closes an opening / closing door of the elevator car. 10. The rope type elevator according to claim 9, wherein said driving force transmission means is controlled by a speed command generated from said control device. 11. The rope type elevator according to claim 9, wherein said driving force transmitting hand is controlled by an elevator car signal obtained from position information of said elevator car. 12. An elevator car operating along an elevator guide rail, a counterweight operating along a counterweight guide rail, a hoisting rope suspending the elevator car and the counterweight, and a hoisting rope. An elevator system including a driving machine having a traction sheave to be engaged, wherein the driving machine includes a rotary electric motor driving the traction sheave, and the driving machine is mounted on a structure constituting the elevator car. A rope type elevator system characterized by the following. 13. A hoisting rope installed on a frame of the elevator car, wherein two or more traction sheaves are provided on a rotating shaft of the driving machine. 13. The rope-type elevator system according to claim 12, wherein the hoisting rope is fixed to a beam on a roof after winding one or more times. 14. An elevator car operating along an elevator guide rail, a counterweight operating along a counterweight guide rail, a hoisting rope suspending the elevator car and the counterweight.
An elevator system comprising an elevator car drive having a traction sheave engaged with the hoisting rope, and a door drive for driving an opening / closing door of the elevator car, wherein the elevator car drive is provided in a part of the structure of the elevator car. And a control device for controlling the elevator car driving device, wherein the control device controls a door driving device for operating an opening / closing door of the elevator car.