JP2000302360A - Hoisting machine for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoisting machine for elevator which is reduced in size and easy in maintenance and examination in the hoisting machine for elevator which can be installed within a hoistway and provided with a driving sheave around which a main rope is wound. SOLUTION: In this hoisting machine 15 having an outer rotor type permanent magnet motor in which a stator winding 27 is provided on a stator and an permanent magnet 25 is arranged outside opposite to an armature winding 27, a driving sheave 18 in which a main rope is wound around a rotor, a brake drum 33 on one side of the rotor, and a brake shoe 32 on the brake drum are arranged, and a speed detector 35 is arranged on the other side of the rotor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an outer rotor type in which a permanent magnet is provided on a rotor, an armature winding is provided on a stator, and the permanent magnet is disposed outside facing the armature winding. It relates to a permanent magnet type motor.

[0002]

2. Description of the Related Art FIG. 19 is a perspective view conceptually showing a conventional elevator apparatus. In the figure, (1) is the hoistway,
(2) is a hoisting machine provided in a machine room (not shown) installed on the upper end of the hoistway (1), (3) is a baffle provided near the hoisting machine (2), 4) is a car guided by a car guide rail (5) set up on a hoistway (1), and (6) is a car guided by a counterweight guide rail (7) set up on a hoistway (1). The guided counterweight (8) is a main rope wound around the hoisting machine (2) and the deflector wheel (3) and both ends connected to the car (4) and the counterweight (6), respectively.

[0003] The conventional elevator apparatus shown in Fig. 19 is constructed as described above, and when the hoist (2) is energized,
The car (4) and the counterweight (6) move up and down in opposite directions via the main rope (8).

In the elevator apparatus shown in FIG. 19, a machine room of the hoisting machine (2) is required above the upper end of the hoistway (1), and a penthouse or the like is required on the building roof. If there is a problem such as the right to sunshine, measures must be taken. In order to improve such a problem, an elevator device in which a linear motor is incorporated in the counterweight (6) shown in FIG. 20 is provided.

FIG. 20 is a perspective view conceptually showing another conventional elevator apparatus. In the figure, (1) is a hoistway, (9) is a pulley installed at the top of the hoistway (1), and (4) is guided to a car guide rail (5) standing on the hoistway (1). (6) is a counterweight which is guided by a counterweight guide rail (7) erected on the hoistway (1), (8) is wound around the pulley (9) and both ends are Each basket (4) and counterweight (6)
The main rope connected to. (10) is the armature coil of the cylindrical linear motor, (11) is the secondary conductor column of the cylindrical linear motor, and (12) is the secondary conductor of the cylindrical linear motor installed at the top of the hoistway (1). Column (11) upper fixing mechanism,
(13) is a lower fixing mechanism of the secondary conductor column (11) of the cylindrical linear motor installed at the bottom of the hoistway (1).

[0006] The conventional elevator apparatus shown in Fig. 20 is constructed as described above, and the linear motor incorporated in the counterweight (6) is energized to drive the car (4) through the main cable (8). And the counterweight (6) moves up and down in opposite directions.

[0007]

In the elevator device shown in FIG. 20, although a hoisting machine (2) above the hoistway (1) does not require a machine room, a secondary conductor is provided over the entire length of the hoistway (1). It is necessary to lay the column (11) and provide the armature coil (10) of the linear motor on the counterweight (6) on the movable side. Further, there is a problem that it is necessary to supply a linear motor current to a moving cable (not shown) of the elevator or to increase a capacity of a power supply equipment due to a low efficiency of the linear motor, thereby increasing a manufacturing cost. .

According to the present invention, there is provided an elevator hoist having a drive sheave on which a main rope can be wound, which can be installed in a hoistway. The elevator hoist can be reduced in size and maintenance is easy. The purpose is to:

[0009]

According to the elevator hoist of the present invention, a permanent magnet is provided on a rotor, an armature winding is provided on a stator, and the permanent winding is provided on the outside facing the armature winding. In a hoist having an outer rotor type permanent magnet motor in which a magnet is arranged, the hoist is formed on the rotor,
A drive sheave around which a main rope is wound, a brake sliding surface formed on one side of the rotating body in the axial direction of the permanent magnet type motor, and braking for pressing a brake shoe against the brake sliding surface An apparatus and a speed detector provided on the other side of the rotating body in the axial direction of the permanent magnet type motor.

The brake sliding surface is formed on an inner surface of the rotating body, and the brake shoe of the braking device is arranged inside the rotating body.

Further, one end of the rotating body is open.

Still further, the brake sliding surface is arranged so as to be shifted from the permanent magnet in the axial direction of the permanent magnet type motor.

Further, the speed detector is disposed on a protruding flange portion formed on the rotating body so as to protrude in the axial direction of the permanent magnet motor.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 3 show an embodiment of the present invention. FIG. 1 is a conceptual perspective view, FIG. 2 is a conceptual side view of FIG. 1, and FIG. 3 is a conceptual plan view of FIG. . In the figure, (1) is the hoistway, (4) is the hoistway
A car guided on both sides by a car guide rail (5) set up on (1), and (6) is guided on both sides by a counterweight guide rail (7) set up on a hoistway (1). A balancing weight (14) is a braking device provided on the balancing weight (6) to press the balancing weight guide rail (7) when necessary. (15) is the hoistway
A hoisting machine consisting of an outer rotor motor provided at the top of (1), the guide line for the counterweight on both sides of the axis (7)
Fixed body (16) located at the top of the hoistway (1)
And a drive sheave (18) composed of an outer rotor and a shaft (17) supported at both ends. This outer rotor motor has a structure suitable for enabling downsizing, thinning, and simplification of the structure. Even when a hoist is installed in a hoistway, the space required for the hoistway is reduced. It is effective in that it can be done.

Reference numeral (8) denotes a main rope, an intermediate portion of which is wound around a drive sheave (18) of a hoisting machine (15), and one end of which is a counterweight (6) of a car (4).
The other end is connected to the counterweight (6). (19) is a car buffer provided on the bottom of the hoistway (1), (20) is a buffer for the counterweight provided on the bottom of the hoistway (1), and (21) is a car on the hoistway (1). It is a landing of elevators provided apart from each other in the vertical direction.

In the elevator apparatus constructed as described above, when the hoist (15) is energized, the car (4) and the counterweight (6) are opposed to each other via the main rope (8). Go up and down in the direction. A braking device (14) is provided on the counterweight (6) to reduce the outer shape of the hoisting machine (15), and the cage is operated by pressing the guide rail (7) for the counterweight when necessary. (4) and the lifting and lowering of the counterweight (6) are braked.
Also, as shown in FIG. 2, the hoisting machine is located at a position lower than the upper surface of the car (4) when the car (4) stops at the uppermost landing (21).
(15) is set up. Thereby, the gap L between the upper surface of the car (4) and the ceiling of the hoistway (1) when the car (4) stops at the uppermost landing (21) can be minimized.

This eliminates the need for a machine room of the hoist above the upper end of the hoistway (1), and makes it possible to reduce the required space above the hoistway (1). Therefore, it is possible to reduce the height of the building and solve the problem of the right to sunshine and the like. Also, since the hoisting machine (15) is composed of an outer rotor motor, a secondary conductor column is laid on the entire length of the hoistway (1), or the power supply equipment capacity is increased due to the low efficiency of the linear motor. It is possible to avoid an increase in the manufacturing cost due to such factors. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

Embodiment 2 FIG. FIG. 4 is a conceptual perspective view showing another embodiment of the present invention. In the figure, (1)
Is a hoistway, (4) is a car guided on both sides by a car guide rail (5) installed on the hoistway (1), and (6) is a counterweight installed on the hoistway (1). A counterweight, both sides of which are guided by a guide rail (7), is a braking device (14) provided on the counterweight (6) for pressing the counterweight guide rail (7) when necessary. Reference numeral (15) denotes a hoist comprising an outer rotor motor provided at the top of the hoistway (1) .The hoisting machine (1) has an axis arranged in a direction connecting the counterweight guide rails (7) on both sides. Shaft (17) with both ends supported by fixed body (16) on top of ()
And two drive sheaves (181) each including an outer rotor provided on the shaft (17) at a distance from each other.

The pulley (9) is provided at the top of the hoistway (1) and corresponds to the two drive sheaves (181), respectively, and the pulley is disposed immediately above the car (4). Two sets of main ropes corresponding to the sheaves (181), respectively.
5) It is wound around the drive sheave (181) and is wound around the pulley (9),
It is again wrapped around the drive sheave (181) and the pulley (9), that is, it is double-wrapped to realize the required traction capacity, one end is connected to the member on the top of the car (4), and the other end is a counterweight ( It is connected to 6).

In the elevator apparatus constructed as described above, the hoisting machine (15) is energized and the outer rotor motors each having the drive sheave (181) are operated synchronously, so that the main cable (8) is driven. The basket (4) and the counterweight (6) move up and down in the opposite directions via. By providing two drive sheaves (181) each composed of an outer rotor, that is, by arranging the outer rotor motor separately in two, the burden torque per outer rotor motor can be reduced to half. it can. As a result, the diameter of the outer rotor motor can be reduced, the space required for installation is reduced, and the car (4) stops at the uppermost landing of the hoistway (1). 1) The gap with the ceiling can be minimized.

This eliminates the need for a machine room of the hoist above the upper end of the hoistway (1), and reduces the required space above the hoistway (1). Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. Also, since the hoisting machine (15) is composed of an outer rotor motor, a secondary conductor column is laid on the entire length of the hoistway (1), or the power supply equipment capacity is increased due to the low efficiency of the linear motor. It is possible to avoid an increase in the manufacturing cost due to such factors. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost. In the embodiment of FIG. 4, the hoisting machine (15) is arranged above the car (4) and the pulley (9) is arranged above the counterweight (6). It is clear that the same operation as that of the embodiment can be obtained.

Embodiment 3 FIG. FIG. 5 is a conceptual perspective view showing another embodiment of the present invention. In FIG.
And (15) is a first hoist comprising an outer rotor motor provided at the top of the hoistway (1) and disposed above the counterweight (6). The axis is arranged in the direction connecting the counterweight guide rails (7) on both sides, and on the shaft (17) and the shaft (17) whose both ends are supported by the fixed body (16) at the top of the hoistway (1). It is constituted by a drive sheave (18) comprising an outer rotor provided. Reference numeral (151) denotes a second hoisting machine provided at the top of the hoistway (1) and located above the car (4), and is configured similarly to the first hoisting machine (15).

Reference numeral (8) denotes a main rope, whose intermediate portion is wound around the drive sheave (18) of the first hoisting machine (15) and the drive sheave (18) of the second hoisting machine (151). One end is connected to the member on the upper surface of the car (4), and the other end is connected to the counterweight (6).

The elevator device constructed as described above is driven by the first hoisting machine (15) and the second hoisting machine (151) so as to be operated synchronously, so that the elevator can be moved through the main cable (8). The car (4) and the counterweight (6) move up and down in opposite directions. Then, the main rope (8) is wound around the first hoisting machine (15) and the second hoisting machine (151), and is driven by the drive sheave (18) for a traction capacity of 1/4 turn, that is, a total of 1 / 2 laps of traction capacity is obtained. As described above, the burden torque per unit of the first hoisting machine (15) and the second hoisting machine (151) can be reduced to half. And the diameter of the first hoisting machine (15) and the second hoisting machine (151) can be reduced, and the space required for installation is reduced, so that the car (4) is at the highest landing of the hoistway (1). The gap between the upper surface of the car (4) when stopped and the ceiling of the hoistway (1) can be minimized.

This eliminates the need for a machine room of the hoisting machine above the upper end of the hoistway (1), and reduces the required space above the hoistway (1). Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. Also, since the hoisting machine (15) is composed of an outer rotor motor, a secondary conductor column is laid on the entire length of the hoistway (1), or the power supply equipment capacity is increased due to the low efficiency of the linear motor. It is possible to avoid an increase in the manufacturing cost due to such factors. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost. When the traction capacity is insufficient due to the diameter of the drive sheave (18) in the embodiment of FIG. 5, the main rope (8) can easily be fully wrapped or double-wrapped to obtain the required traction capacity. it can.

Embodiment 4 FIG. 6 is a conceptual perspective view showing another embodiment of the present invention.
It is configured similarly to the embodiment of FIG. In the figure, the same reference numerals as those in FIGS.
5) is a hoist comprising an outer rotor motor provided on the top of the hoistway (1), the axis of which is arranged in the direction connecting the guide rails for the counterweights on both sides, and is located on the top of the hoistway (1). Two drive sheaves (1) each including a shaft whose both ends are supported by a fixed body and outer rotors provided on the shaft and separated from each other.
81).

(8) corresponds to the drive sheave (181).
The main rope with the set, the middle section is the drive sheave of the hoisting machine (15)
Wrapped around (181), wrapped around pulley (9) and re-driven sheave
(181) and the pulley (9), that is, it is double-wrapped to realize the required traction capacity,
The lower end of the counterweight (6) of (4) is connected to the lower end, and the other end is connected to the counterweight (6).

In the elevator apparatus constructed as described above, the hoisting machine (15) is energized and the outer rotor motors each having the drive sheave (181) are synchronously operated, so that the main rope (8) is driven. The basket (4) and the counterweight (6) move up and down in the opposite directions via. And also in the embodiment of FIG. 6, the car (4) when the car (4) stops at the uppermost landing
Since the hoisting machine (15) is installed at a position lower than the upper surface, the same operation as the embodiment of FIGS. 1 to 3 can be obtained. Also, in the embodiment of FIG. 6, since two drive sheaves (181) each including an outer rotor are provided,
The same operation as the embodiment of FIG. 4 can be obtained.

With this configuration, the machine room of the hoisting machine is not required above the upper end of the hoistway, and the required space in the upper part of the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. In addition, since the hoisting machine (15) is composed of an outer rotor motor, it is necessary to lay a secondary conductor column over the entire length of the hoistway, or to increase the capacity of the power supply equipment for low efficiency of the linear motor. Thus, it is possible to avoid an increase in manufacturing cost due to the above. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost. In the embodiment of FIG. 6, the hoist (15) is placed above the car (4) and the pulley is suspended (6).
It is clear that the same operation as that of the embodiment of FIG.

Embodiment 5 7 to 9 show another embodiment of the present invention, and FIG. 7 shows FIGS.
5 and 6 are longitudinal sectional views of the hoist according to the embodiment of the present invention, FIG. 8 is a longitudinal orthogonal sectional view of the outer rotor motor portion of FIG. 7, and FIG. 9 is a longitudinal orthogonal sectional view of the braking device portion of FIG. . In the figure, (15) is a hoist comprising an outer rotor motor provided at the top of the hoistway (1), a shaft (17), an outer rotor and a rope groove (22) provided with a bearing (23). By axis (1
7), a drive sheave (18), a field yoke (24) provided in the drive sheave (18), and a field permanent magnet (25) provided in the field yoke (24). ), The fixed side provided on the shaft (17), that is, the armature yoke (26) on the stator side, the armature winding (27) on the stator side, and the pedestal (28) supporting the shaft (17). It is configured. This permanent magnet type synchronous motor is suitable for downsizing the hoist, and is effective in that the space required for the hoistway can be reduced even when the hoist is installed in the hoistway. Further, the motor shown in FIG. 7 is a radial gap type motor, and the electromagnetic force acting between the stator and the rotor is dispersed in the radial direction to become an internal force, so that a strong supporting structure is not required for the movable part. This is effective in that the structure is simplified. Furthermore, since the outer rotor is a radial gap type outer rotor, the permanent magnet is pressed against the rotor by centrifugal force, so that there is an effect that the magnet is less likely to come off than the adduction type. Particularly, in a large motor applied to an elevator, a strong attraction force of several tons acts between a gap between a stator and a permanent magnet of a rotor, and thus this structure is particularly effective.

(29) is a braking device provided on the hoisting machine (15), and includes an electromagnet (30), a brake arm (31), and a brake shoe.
(32), a brake shoe (32) formed in the drive sheave (18)
Brake drum (33) and brake shoe (3
2) is constituted by a spring (34) for pressing the brake drum (33). (35) is an absolute value encoder for speed detection, which is disposed on a projecting flange-like portion of the drive sheave (18) via a bearing (36), and is an encoder holding mechanism fixed to the shaft (17).
(37) via a mounting bracket (38).

In the elevator apparatus constructed as described above, the hoisting machine (15) is energized and the car and the counterweight move in opposite directions via the drive sheave (18) and the main rope (8). Go up and down. When the hoist (15) is energized, the electromagnet (30) is energized and the brake arm (31) is sucked against the pressing force of the spring (34), and is driven by the braking device (29). The sheave (18) is released from braking. When the hoisting machine (15) is deenergized, the electromagnet (30) is deenergized, the suction of the brake arm (31) is released, and the spring (34)
Brake shoe on the brake drum (33) by the pressing force of
(32) is pressed, and the drive sheave (18) is braked by the braking device (29).

In the embodiment of FIGS. 7 to 9 as well, the elevator device is constructed in the same manner as in the embodiment of FIGS. 1 to 3, 4, 5 and 6. Also, the machine room of the hoisting machine is not required above, and the required space in the upper part of the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. In addition, since the hoisting machine (15) is composed of an outer rotor motor, it is necessary to lay a secondary conductor column over the entire length of the hoistway, or to increase the capacity of the power supply equipment for low efficiency of the linear motor. Thus, it is possible to avoid an increase in manufacturing cost due to the above. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

When the embodiment shown in FIGS. 7 to 9 is applied, the counterweight (6) is provided in the embodiment shown in FIGS. Braking device (1
4) becomes unnecessary. In the hoisting machine (15) according to the embodiment shown in FIGS. 7 to 9, the speed detecting absolute value encoder (35) is provided at one of the two longitudinal ends for convenience of maintenance work of the braking device (29). It is necessary to arrange a braking device (29) on the other hand.

Further, in the embodiment shown in FIGS. 7 to 9, an example of a permanent magnet type synchronous motor is shown in order to reduce the size of the outer rotor motor, but an aluminum secondary conductor is used instead of the permanent magnet (25). It can be realized even if it is built into the outer rotor side and is of the induction motor type. In this case, absolute encoder for detecting position, speed and field pole position
(35) is possible with an incremental encoder. In addition, the shaft (17) in FIG. 7 can be extended to directly mount the pedestal (28) on the fixed body (not shown) of the hoistway, and the hoisting machine (15) is supported in the hoistway. Beam (not shown)
Installation can be omitted.

Embodiment 6 FIG. 10 and 11 are views showing another embodiment of the present invention. FIG. 10 is a longitudinal sectional view of the hoisting machine, which corresponds to FIG. 7 described above, and FIG. 11 is a left side of the supporting member of FIG. FIG. In the drawings, the same reference numerals as those in FIGS. 7 to 9 denote corresponding parts, (16) is a fixed body provided apart from each other on the top of the hoistway, and (17) is an outer rotor constituting the hoisting machine (15). The stator side of the outer rotor motor is fixed to the motor shaft, and an H-shaped through hole is provided. Reference numeral (39) denotes a support member made of H-shaped steel, inserted through the H-shaped through hole of the shaft (17), and supported by fixed bodies (16) whose both ends face each other.

The elevator apparatus constructed as described above is similar to the embodiment of FIGS. 7 to 9 and is similar to the embodiment of FIGS. 1 to 3, 4, 5 and 6. Since the apparatus is configured, the machine room of the hoist is not required above the upper end of the hoistway, and the required space in the upper part of the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. Also,
Since the hoisting machine (15) is composed of an outer rotor motor, it is necessary to lay a secondary conductor column over the entire length of the hoistway, or to increase the capacity of the power supply equipment for low efficiency of the linear motor. An increase in manufacturing costs can be avoided. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

In the embodiment shown in FIGS. 10 and 11, the car (4), the counterweight (6), the main rope (8), and the hoist (15) are used.
Is supported by the support member (39). Therefore, the hoist (1
The shaft (17) of the outer rotor motor that constitutes (5) can be reduced in strength, and the shaft (17) can be reduced in weight.
The production cost of (15) can be reduced.

Embodiment 7 FIG. 12 is a view showing another embodiment of the present invention, and is a longitudinal sectional view of the hoist of the embodiment of FIG. 4 and is a view corresponding to FIG. 7 described above. In the figure, the same reference numerals as in FIG. 7 denote corresponding parts, and (15) is a hoist comprising an outer rotor motor provided on the top of the hoistway (1).
2 consisting of outer rotors provided above and separated from each other
Two drive sheaves (181) are provided. (40) is a joint made of a rigid body that interconnects the two drive sheaves (181). (29) is a braking device provided on one drive sheave (181), and (35) is an absolute value encoder for detecting the position, speed, and field pole position provided on the other drive sheave (181). It is.

In the elevator apparatus constructed as described above, when the hoisting machine (15) is energized and the outer rotor motors each having the drive sheave (181) are connected to each other by the joint (40), the synchronous operation is performed. As a result, the car (4) and the counterweight (6) move up and down in opposite directions via the main cable (8). This eliminates the need for the machine room of the hoist above the upper end of the hoistway, and reduces the required space in the upper part of the hoistway. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. Also, the hoist (1
5) is composed of an outer rotor motor, which increases the production cost by laying a secondary conductor column over the entire length of the hoistway, or increasing the capacity of the power supply equipment for low efficiency of the linear motor. Can be avoided. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

Further, since two drive sheaves (181) each including an outer rotor provided on the shaft (17) and separated from each other are provided, detailed description will be omitted, but in the embodiment of FIG. It is apparent that the same operation as that of the embodiment of FIG. 4 and the embodiment of FIG. 6 can be obtained. In the embodiment of FIG. 12, the braking device (29) provided on one drive sheave (181) is stopped, and the braking device (14) is provided on the counterweight (6) as shown in FIG. Configurations are also possible. 10 and 1 in the embodiment of FIG.
A configuration in which a shaft (17) as shown in the first embodiment and a support member (39) inserted through the shaft (17) is also possible. Further, in the embodiment of FIG. 12, the outer rotor motors each having the drive sheave (181) may not be connected to each other by the joint (40), and the outer rotor motors may be electrically synchronized with each other. .

Embodiment 8 FIG. 13 and 14 show another embodiment of the present invention. FIG. 13 is a control block diagram of an inverter for driving a hoist comprising a synchronous outer rotor motor using a permanent magnet, and FIG. Two hoists including a synchronous outer rotor motor using a permanent magnet are provided, and these hoists are not mechanically connected to each other. For example, as in the embodiments of FIGS. It is a control block diagram of the inverter which drives the hoist of the comprised elevator apparatus. It should be noted that an elevator control unit, a position control unit, and the like, which are not directly related to the present invention, are omitted. In the figure, (41) is a drive inverter of a hoisting machine (15) composed of an outer rotor motor, (42) is a speed command generator, and (43) is a speed command value Vcom and a current speed V *.
This is the matching point for finding the speed deviation from.

Reference numeral (44) denotes a speed amplifier for processing a speed deviation. The speed amplifier (44) outputs iq as a torque command. (45) is a speed calculator that calculates the motor rotation speed from the pulse train obtained from the absolute value encoder (35), (46)
Is a dq three-phase AC coordinate converter, and an absolute value encoder (35)
Is multiplied by the magnetic pole position θ of the magnet obtained from the above and sin θ, sin (θ−2 / 3π) calculated by the trigonometric function generator (47) and iq, and the U-phase current command iqu = iq · sin θ V-phase current The command iqv = iq · sin (θ−2 / 3π) is generated.

(48) shows a U-phase current command iqu and a U-phase current iu
And (49) is a joint point for finding a current deviation between the V-phase current command iqv and the V-phase current iv *. (50) is a current amplifier that generates a U-phase voltage command Vul from the current deviation of the U-phase current, and (51) is a current amplifier that generates a V-phase voltage command Vvl from the current deviation of the V-phase current. W-phase voltage command Vwl is expressed as Vwl = − (Vul +
Vvl) at the calculation point (52). (53) is a PWM inverter which converts three-phase voltage commands Vul, Vvl, Vwl into PWM signals.
It converts the signal into an M signal, drives a transistor of the main circuit inverter or an IGBT, and applies a PWM voltage to a hoisting machine (15) including an outer rotor motor.

(54) is a DCCT for detecting a motor current. In the functional block of the drive inverter (41), PW
Except for the M inverter (53) and the DCCT (54), detailed explanations are omitted, but are usually calculated by a microcomputer. (411) is the speed command from the drive inverter (41).
The first functional block excluding (42), (412) is a contact point (48), a contact point (49) in the drive inverter (41),
Current amplifier (50), current amplifier (51), calculation point (52), PWM
This is a second functional block including an inverter (53) and a DCCT (54).

There are provided two hoists (15) comprising a permanent magnet type outer rotor motor operating according to the principle described above, and these hoists (15) are not mechanically connected to each other, for example, The drive inverter for driving the hoisting machine (15) of the elevator apparatus configured as in the embodiment of FIGS. 4 and 5 is usually configured as shown in FIG. That is, (55) is a 2-motor drive inverter, (41)
1) is the same first functional block as in FIG. 13, (42) is a speed command, and (35) is an absolute value encoder. With such a configuration, control is performed by giving a command from one speed command (42) to the first function block (411) of two motor controls.

Also, in the embodiment shown in FIGS. 13 and 14, the elevator apparatus is constructed in the same manner as the embodiment shown in FIGS. 4 and 5, so that the lifting machine is located above the upper end of the hoistway. A machine room is not required, and the required space above the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. In addition, since the hoisting machine (15) is composed of an outer rotor motor, it is necessary to lay a secondary conductor column over the entire length of the hoistway, or to increase the capacity of the power supply equipment for low efficiency of the linear motor. Thus, it is possible to avoid an increase in manufacturing cost due to the above. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

Embodiment 9 FIG. FIGS. 15 and 16 show another embodiment of the present invention. FIG. 15 shows two hoisting machines comprising a synchronous outer rotor motor using permanent magnets. FIG. 16 is a control block diagram of an inverter that drives a hoist of an elevator apparatus that is mechanically connected to each other as shown in the embodiment of FIG. 12, and FIG. 16 is a main circuit diagram of the inverter of FIG. In the figure, (56) is a drive inverter of two hoisting machines (15) composed of outer rotor motors, (411) is a first functional block same as FIG. 13, and (412) is a second functional block same as FIG. , (42) are speed commands, and (35) is an absolute value encoder.

Reference numeral (413) denotes a torque calculating means, a matching point (43) for obtaining a speed deviation from the speed command value Vcom and the current speed V *, and a speed amplifier section for processing the speed deviation and outputting iq as a torque command. (44), comprising a speed calculator (45) for calculating a motor rotation speed from a pulse train obtained from an absolute value encoder (35), a dq three-phase AC coordinate converter (46), and a trigonometric function generator (47). ing.

Then, the SM2 hoist (15) shown in FIG.
The motor (15) of SM1 shown in FIG. 15 is such that the motor current of U1 phase current command iq = iq · sin θ V1 phase current command iqv = iq · sin (θ−2 / 3π) The same current control as that described above is performed.
5) The motor current is controlled uniformly. The main circuit of the inverter that drives the motors of the two hoists (15) configured as shown in FIG. 15 will be described with reference to FIG. FIG.
Among them, (57) is a three-phase AC input current, and (58) is a converter for converting an AC voltage into a DC voltage, which is usually constituted by a diode or the like. However, when the control is performed with the input power factor = 1 or the power supply is regenerated, it is configured by a transistor, an IGBT bridge, and the like.

(59) is a capacitor for smoothing the converter voltage, and (60) is an inverter bridge circuit composed of a transistor, an IGBT bridge and the like for driving the SM1 hoist (15) shown in FIG. , (61), like the inverter bridge circuit (60), are inverter bridge circuits composed of transistors, IGBT bridges and the like for driving the SM2 hoisting machine (15) shown in FIG. With such a configuration, the two inverter bridge circuits (60) and (61) are driven by the DC voltage from one converter bridge (58). The main circuit of the inverter that drives the two motors in FIG.
It is also possible to configure as follows.

Also in the embodiment of FIGS. 15 and 16, the elevator apparatus is constructed in the same manner as the embodiment of FIG. 12, so that the machine room of the hoisting machine is not required above the upper end of the hoistway. And the required space in the upper part of the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. Also, hoisting machine
(15) consists of an outer rotor motor,
It is possible to avoid an increase in manufacturing costs due to, for example, laying a secondary conductor column over the entire length of the hoistway or increasing the capacity of the power supply equipment for low efficiency of the linear motor.
Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

Embodiment 10 FIG. FIG. 17 is a view showing another embodiment of the present invention, in which two hoisting machines are arranged in series as shown in FIG. 12 and drive sheaves are connected to each other by a joint, Control of an inverter that drives a hoist of an elevator device in which two hoists including a synchronous outer rotor motor using a permanent magnet are provided, and armature windings of these hoists are connected in series. It is a block diagram. In the figure, (62) is a drive inverter of two hoisting machines (15) composed of outer rotor motors, (41)
1) is the same first functional block as in FIG. 13, (42) is the speed command,
(35) is an absolute value encoder.

In such a configuration, two hoisting machines (15) can be driven by one driving inverter (62) similar to the driving inverter (41) for driving one motor shown in FIG. . In the embodiment of FIG. 17, when a motor using the same winding as that used in FIG. 14 is used, the terminal voltage of the motor is doubled, so that the voltage generated by the inverter is doubled. There is a need to.

In the embodiment shown in FIG.
Since the elevator apparatus is configured in the same manner as the embodiment of FIG. 4, the machine room of the hoisting machine is not required above the upper end of the hoistway, and the required space in the upper part of the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. In addition, since the hoisting machine (15) is composed of an outer rotor motor, it is necessary to lay a secondary conductor column over the entire length of the hoistway, or to increase the capacity of the power supply equipment for low efficiency of the linear motor. Thus, it is possible to avoid an increase in manufacturing cost due to the above. This allows
An elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost can be obtained.

Embodiment 11 FIG. FIG. 18 is a view showing another embodiment of the present invention, in which an inverter for driving a hoist of an elevator apparatus provided with two hoists including a synchronous outer rotor motor using a permanent magnet is provided. It is a circuit diagram. In the figure, (57) is the three-phase AC input current, (5)
8) is a converter for converting an AC voltage into a DC voltage, and is usually constituted by a diode or the like. However, when the control is performed with the input power factor = 1 or the power supply is regenerated, it is configured by a transistor, an IGBT bridge, and the like.

(59) is a capacitor for smoothing the converter voltage, and (60) is an inverter bridge circuit composed of a transistor, an IGBT bridge, etc. for driving the SM1 hoist (15) shown in FIG. , (61), like the inverter bridge circuit (60), are inverter bridge circuits composed of transistors, IGBT bridges and the like for driving the SM2 hoisting machine (15) shown in FIG. (63) is a contactor provided between the inverter bridge circuits (60) and (61) and the hoisting machine (15), and (64) is a contactor.
A contactor provided between (63) and the hoisting machine (15), (65) is a resistor connected to the contactor (64), and (66) is a contactor
This is a safety means consisting of a circuit constituted by (63), (64) and a resistor (65).

In the embodiment shown in FIG.
Since the elevator apparatus is configured in the same manner as the embodiment of FIGS. 1 to 3, the machine room of the hoisting machine is not required above the upper end of the hoistway, and the required space in the upper part of the hoistway is reduced. Therefore, the height of the building is reduced, and problems such as the right to sunshine can be solved. In addition, since the hoisting machine (15) is composed of an outer rotor motor, it is necessary to lay a secondary conductor column over the entire length of the hoistway, or to increase the capacity of the power supply equipment for low efficiency of the linear motor. Thus, it is possible to avoid an increase in manufacturing cost due to the above. Thus, it is possible to obtain an elevator apparatus that can be easily installed, is highly efficient, and can be manufactured at low cost.

Further, in the case where the elevator apparatus provided with the hoist including the outer rotor motor as in the embodiment shown in FIGS. 1 to 3 is stopped unexpectedly between the floors of the building due to an inverter failure or the like. Similar to the conventional linear motor driven elevator device, the hoisting machine (15), which is a driving device, and the braking device are provided in the hoistway, so that the hoisting machine for rescue passengers in the car (15) There was a problem that such operations could not be easily performed. That is, when the car is stopped unexpectedly, a rescue operation is generally performed in which the braking device is released from the outside of the hoistway by inching to freely lower the car and stop at the nearest landing.

In an elevator apparatus provided with a hoist comprising an outer rotor motor as in the embodiment shown in FIGS. 1 to 3, not only when the car is stopped unexpectedly as shown in FIG. At the time of stop, the feeder line of the three-phase armature of the hoisting machine (15) is opened by the contact of the contactor (63), and at the same time, the contact of the contactor (64) is closed.
5) is connected to the three-phase armature and short-circuited.

Under such control, when the braking device is released by inching or the like and the car is freely lowered,
Even if the braking device does not operate due to an unexpected situation, a braking torque proportional to the descending speed acts due to the interaction between the permanent magnet of the rotor and the coil of the three-phase armature via the safety means (66). Therefore, the safety of the elevator device when the malfunction of the braking device occurs can be improved. Normally, the contact of the contactor (63) is closed when the contactor coil is excited, while the contact of the contactor (64) is closed when the coil of the contactor is not excited.

[0062]

According to the elevator hoist of the present invention, a permanent magnet is provided on a rotor, an armature winding is provided on a stator, and the permanent magnet is disposed outside facing the armature winding. In a hoist having an outer rotor type permanent magnet motor, a drive sheave formed on the rotor and around which a main rope is wound, and one side of the rotating body in the axial direction of the permanent magnet type motor. A brake sliding surface is formed, a braking device for pressing a brake shoe against the brake sliding surface, and a speed detector provided on the other side of the rotating body in the axial direction of the permanent magnet motor. Therefore, maintenance work becomes easy.

Further, the brake sliding surface is formed on the inner surface of the rotating body, and the brake shoe of the braking device is disposed inside the rotating body, so that the elevator hoist can be reduced in size. .

Further, since one end side of the rotating body is opened, both miniaturization of the elevator hoist and easiness of maintenance work can be achieved.

Further, since the brake sliding surface is disposed so as to be displaced in the axial direction of the permanent magnet type motor with respect to the permanent magnet, the clearance between the rotor and the stator of the permanent magnet type motor can be reduced. For example, it is possible to reduce the adverse effect on the motor performance due to the load generated when the brake slides, for example, when the brake force changes.

Further, since the speed detector is disposed on the protruding flange formed on the rotating body so as to protrude in the axial direction of the permanent magnet type motor, maintenance work of the speed detector is facilitated.

[Brief description of the drawings]

FIG. 1 is a conceptual perspective view showing Embodiment 1 of the present invention.

FIG. 2 is a conceptual side view of FIG.

FIG. 3 is a conceptual plan view of FIG. 1;

FIG. 4 is a conceptual perspective view showing Embodiment 2 of the present invention.

FIG. 5 is a conceptual perspective view showing a third embodiment of the present invention.

FIG. 6 is a conceptual perspective view showing Embodiment 4 of the present invention.

FIG. 7 is a view showing a fifth embodiment of the present invention, and FIGS.
FIG. 7 is a longitudinal sectional view of the hoist according to the embodiment of FIG. 3, the embodiment of FIG. 4, and the embodiments of FIG. 5 and FIG.

8 is a longitudinal orthogonal cross-sectional view of an outer rotor motor portion shown in FIG. 7;

FIG. 9 is a longitudinally orthogonal cross-sectional view of the braking device shown in FIG. 7;

FIG. 10 is a view showing a sixth embodiment of the present invention;
FIG. 8 is a longitudinal sectional view of the hoisting machine, corresponding to FIG. 7 described above.

FIG. 11 is a left side view of the support member of FIG. 10;

12 is a diagram showing a seventh embodiment of the present invention, and FIG.
FIG. 8 is a longitudinal sectional view of the hoist according to the embodiment, and is a view corresponding to FIG. 7 described above.

FIG. 13 shows an eighth embodiment of the present invention, and is a control block diagram of an inverter that drives a hoist including a synchronous outer rotor motor using a permanent magnet.

14 is provided with two hoists comprising a synchronous outer rotor motor using a permanent magnet, and these hoists are not mechanically connected to each other. For example, in the embodiment shown in FIGS. 4 and 5, FIG. FIG. 3 is a control block diagram of an inverter that drives a hoist of an elevator device configured as in the embodiment,
This corresponds to FIG.

FIG. 15 is a view showing a ninth embodiment of the present invention, in which a synchronous outer rotor motor 2 using a permanent magnet is used;
One hoist is provided and these hoists are
The control block diagram of the inverter which drives the hoist of the elevator apparatus mechanically connected and comprised as shown in embodiment.

16 is a main circuit diagram of the inverter in FIG.

FIG. 17 is a view showing a tenth embodiment of the present invention, in which two hoists including a synchronous outer rotor motor using a permanent magnet are provided, and these hoists are mutually connected as shown in FIG.
FIG. 2 is a control block diagram of an inverter that drives a hoist of an elevator apparatus in which the armature windings of these hoists are connected in series, as shown in the second embodiment. .

FIG. 18 is a diagram illustrating an eleventh embodiment of the present invention, and illustrates a main circuit of an inverter that drives a hoist of an elevator apparatus provided with two hoists including a synchronous outer rotor motor using a permanent magnet. FIG.

FIG. 19 is a perspective view conceptually showing a conventional elevator device.

FIG. 20 is a perspective view conceptually showing another conventional elevator apparatus.

[Explanation of symbols]

1 hoistway, 4 car, 5 car guide rails, 6 counterweights, 7 counterweight guide rails, 8 main ropes, 14 braking device, 15 hoisting machine, 1st hoisting machine, 16
Fixed body, 17 axis, 18 drive sheave, 25 permanent magnet for field, 26 Armature yoke on stator side, fixed side, 27
Armature winding, 29 braking device, 32 brake shoe, 33 brake drum, 35 absolute encoder for detecting position, speed, field pole position, position / speed detector, absolute value detector, 39 support member, 40 joint , 55 drive inverter, control device, 56 drive inverter, control device, 58 converter bridge, converter, 60 inverter bridge, inverter, 61 inverter bridge, inverter, 66 safety means, 51 second hoisting machine, 412 second of drive inverter Functional block, current control means for stator-side armature windings, 413 torque calculation means.

Claims (5)

[Claims] 1. An outer rotor type permanent magnet motor in which a permanent magnet is provided on a rotor, an armature winding is provided on a stator, and the permanent magnet is disposed outside facing the armature winding. A drive sheave formed on the rotor, around which a main rope is wound, and a brake sliding surface formed on one side of the rotating body in the axial direction of the permanent magnet motor; An elevator hoist comprising: a braking device for pressing a brake shoe against a brake sliding surface; and a speed detector provided on the other side of the rotating body in the axial direction of the permanent magnet motor. Machine. 2. The elevator winding according to claim 1, wherein the brake sliding surface is formed on an inner surface of the rotating body, and the brake shoe of the braking device is disposed inside the rotating body. Good machine. 3. The elevator hoist according to claim 2, wherein one end of the rotating body is open. 4. The elevator hoist according to claim 1, wherein the brake sliding surface is displaced in the axial direction of the permanent magnet motor with respect to the permanent magnet. 5. The elevator hoist according to claim 1, wherein the speed detector is disposed on a protruding flange formed on the rotating body so as to protrude in an axial direction of the permanent magnet motor. Machine