JP2000086127A - Elevator equipment - Google Patents

Abstract

(57) [Problem] To provide a structure capable of easily replacing a detector in a hoisting device. A detector fixing plate for mounting a detector is provided.
And a detector shaft fixing plate 28 for mounting the detector rotation shaft 29a
And a guide pin hole for determining an absolute detection position is provided with the mounting plates 28 and 30, the rotating body 22 of the hoisting device 6, and the support shaft 2.
The detection device 40 provided in FIG.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus using a synchronous motor using a permanent magnet for a hoist.

[0002]

2. Description of the Related Art A synchronous motor is installed in an elevator shaft.
In particular, a traction elevator that installs a hoist using a permanent magnet motor and effectively uses the entire space of the building has been proposed and is being put into practical use.

Incidentally, in the case of a synchronous motor using a permanent magnet, it is necessary to detect the position of the magnetic pole, which is described in Title: Introduction to Servo Technology for Mechatronics (Issue Date: Showa 6)
Issued on October 30, 1st, Issue 81: Nikkan Kogyo Shimbun)
Figure on page ・ 5.1 Described in the control block diagram of SM type AC servo. Fig. 2.2 on page 57 of the same book
As shown in the comparison (2) of the servomotor, the detector
Installed on the non-load side. The detector is provided with a Z phase for detecting the position of the magnetic pole, and an A phase and a B phase for detecting the number of rotations and the direction of rotation.

[0004]

In order to effectively use the elevator shaft, the non-load side of the drive motor is on the elevator shaft wall side, so it is necessary to mount a magnetic pole detector on the load side. In particular, when replacing the magnetic pole detector after installing the elevator apparatus, the magnetic pole detector cannot be accurately adjusted to the position of the magnetic pole.

An object of the present invention is to provide an elevator apparatus capable of accurately aligning magnetic poles even when replacing a magnetic pole detector after installation.

[0006]

According to the present invention, there is provided a traction sheave driven by a permanent magnet motor having a stator inside and a rotor outside,
In an elevator apparatus including a hoisting rope wound around the traction sheave and a car suspended so as to be able to ascend and descend by the hoisting rope, at least the permanent magnet type electric motor is provided in a support shaft of the permanent magnet type electric motor. A detection device including a detector for detecting the magnetic pole position was installed.

[0007] According to the above configuration, the magnetic pole position can be accurately adjusted when the detector is replaced after the elevator device is installed on the elevator shaft.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an elevator apparatus to which the present invention is applied will be described below with reference to FIGS.

A car 1 and a counterweight 2 are suspended on a hoisting rope 3 of an elevator. Car 1
Is suspended by winding up a hoisting rope 3 around a pair of turning pulleys 4 (4a, 4b) pivotally supported at a lower portion. A hoisting device 6 having a traction sheave 7 around which the hoisting rope 3 is wound is arranged at the top of the elevator shaft.

The car 1 and the counterweight 2 move up and down the elevator shaft along the car guide rails 8a and 8b and the counterweight guide rails 9a and 9b for guiding them. Each guide rail is supported on a wall or a building beam of the elevator shaft via a guide rail support, but is not shown.

The hoisting rope 3 runs as follows. One end of the hoisting rope 3 is fixed to the fixing means 12 of the machine base 10 located at the top of the elevator shaft.
It is fixed to. The hoisting rope 3 from the fixing means 12 is connected to the turning pulley 5 which is supported by the counterweight 2.
Descend until you meet. When the deflecting pulley 5 is wound, the hoisting rope 3 rises again and is wound around the traction sheave 7 of the hoisting device 6. The hoisting rope 3 wound around the traction sheave 7 descends to the car 1 side, passes through the turning pulley 4 (4a, 4b) supporting the car 1, and is fixed to the uppermost fixing means of the guide rail 8a ( (13 in FIG. 2)
To rise. The other end of the hoisting rope 3 is fixed by this fixing means (13 in FIG. 2). At the upper end of the counterweight guide rails 9a and 9b, a machine base 10 is provided.
Is fixed. The hoisting device 6 and the fixing means 12 at one end of the hoisting rope 3 are attached and fixed to the machine base 10, and the respective vertical loads are maintained.

Hoisting device 6 and elevator shaft wall 1
The space with 4 is extremely small. In a state where the hoisting rope 3 is wound around the traction sheave 7, it is impossible to replace the parts on the back side of the hoisting device 6.

FIG. 3 shows an example of a specific configuration of the hoisting device 6. The traction sheave 7 includes bolts 26a and 2a.
6b, it is fixed to the rotating body 22. A support shaft 21 is fixed to a base structure 20 of the hoisting device 6. The rotating body 22 is supported by bearings 27a and 27b,
Rotate around 1 The rotating body 22 has a peripheral wall concentric with the support shaft 21, and a plurality of permanent magnets 22a are fixed to the inner periphery thereof. A fixed winding 24b is wound around the fixed iron core 24a facing the inner diameter side via a minute gap in the circumferential direction with the permanent magnet 22a, and is fixed to the base structure 20 with bolts 25.

The support shaft 21 forms a space 21a on the inside of the side opposite to the base structure 20, and a detector 29b is housed inside. The position signal Z of the magnetic pole of the detector 29b and the rotation output signals A-phase and B-phase correspond to the output line 30a and the connector 33.
The signal is output to the terminal block 33 on the top of the base structure 20 via the output lines 30a and 33b and the output line 30b.

The detector 29b is fixed to the detector fixing plate 30 by a fitting 29c. The rotating shaft 29a of the detector 29b is fixed to the detector shaft fixing plate 28. The detector fixing plate 30 is fixed to the support shaft 21 by guide pins 32a. The detector shaft fixing plate 28 is supported on the rotating body 22 by the guide pins 31a. Guide pin 31a,
32a is for centering, and a fixing bolt (not shown) is separately provided. The length of each guide pin is
Since it is used for centering, it is about 3 to 5 mm from the surfaces of the support shaft 21 and the rotating body 22 in the axial direction.

FIG. 4 shows a permanent magnet 22a and a fixed iron core 24a.
And the centering guide pins 31a and 32a. Permanent magnet 22a, fixed iron core 24a on central axis Y
And the guide pins 31a and 32a.

The positional relationship between the centering guide pins 31a and 32a does not have to be on the Y axis. As shown in FIG.
The center of the permanent magnet 22a, the fixed core 24a and the guide pin 31a are provided on the axis, and the guide pin 32a may be set on the X axis. That is, when the angle between the center of the permanent magnet 22a, the center of the fixed iron core, the guide pin 32a of the detector fixing plate, and the guide pin of the detector fixing plate has a predetermined angular relationship, an output of the magnetic pole position is issued. When the detector is replaced, which is an effect of the present invention, the positional relationship at the time of assembly can be restored.

FIGS. 5 and 6 show the detector 29b, the detector fixing plate 30, the detector shaft fixing plate 28 and the guide pin holes 31a1,
32a1 and fixing bolt holes 31c, 31d, 32c, 3
2D shows the positional relationship. On the Y axis, a detector fixing plate 30 is provided.
And a guide pin hole 31a1 of the detector shaft fixing plate 28. The detector shaft fixing plate 28 includes
There are three mounting holes 32e. The X-axis has fixing holes 32c and 32d of the detector fixing plate 30. Tap holes (32e and 32f in FIG. 10) of the support shaft 21 are fixed through bolts (not shown) in the fixing holes. The detector shaft fixing plate 28 also has fixing holes 31c and 31d. The fixing holes are fixed to tap holes (31e and 31f in FIG. 10) of the rotating body 22 through bolts (not shown).

The detector 29b has an output line 30a, to which a connector 33a is connected. A connector 33b is connected to the end of the output line 30b.
The connectors 33a and 33b are connected in the space 21a of the support shaft 21.

When mounting the detector 29b, the output line 3
After extracting 0b, connecting the connectors 33a and 33b and fixing the detector 29b, the extra length of the output line 30b is pulled out from the terminal block 33 side.

The detector 29b having the output line 30a and the connector 31a is fixed to the detector fixing plate 30 by a metal fitting 29c. The rotating shaft 2 of the detector 29b is attached to the detector shaft fixing plate 28.
9a is attached, and when the guide pin holes 31a1 and 32a1 are located on the Y-axis as shown in FIG.
The rotating shaft 29a is adjusted and fixed to the detector shaft fixing plate 28 so that the signal 9b is generated.

Next, the details of the mounting relationship between the detector shaft fixing plate 28, the detector fixing plate 30, and the detector 29b will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 7 shows an interlocking relationship, FIG. 8 shows a detection shaft fixing plate, and FIG. 9 shows a detector fixing plate.

The detector 29b is fixed to the detector fixing plate 30 by mounting brackets 29c and fixing screws 29c1 and 29c2. Reference numeral 30a denotes a spigot portion for fixing to the support shaft 21. The rotation axis 29a of the detector 29b is the key 29
It is fixed to the detector shaft fixing plate at a1. Rotating shaft 29
The key 29a, the shaft hole 28b and the key groove 28c in FIG. 31a1 and 32a1 are guide pin holes. As shown in FIG.
In order to output a magnetic pole when positioned at a1, 32a1, an adjustment hole (not shown) is provided in the mounting bracket 29c, the fixing screw is loosened, and after positioning, it is fixed with a screw lock. Reference numeral 28d in FIG. 9 denotes a hole passing through the rotation shaft 29a.

FIG. 10 is a sectional view of the rotary body 22 and the guide pin holes 31a2, 32 of the support shaft 21 viewed from the direction A of the Z axis in FIG.
It is a schematic diagram of the positional relationship between a2 and fixing holes 31e, 31f, 32e, 32f.

FIG. 11 shows the relationship between the rotating body 22, the detector shaft fixing plate 28 of the support shaft 21, and the detector fixing plate 30 at the spigot portion. The diameter of the fitting of the detector shaft fixing plate 28 and the spigot portion of the rotating body 22 = d1 and the depth = 11 are shown in FIGS.
The dimensions of The fitting diameter = d2 and the depth = 12 of the spigot portion between the detector fixing plate 30 and the support shaft 21 are the dimensions shown in FIGS.

At the time of assembling the hoisting device 6, first, the detector fixing plate 30 to which the detector 29b is attached is inserted into the guide pin hole 3
Positioning is performed using 2a1 and the guide pin hole 32a2 of the support shaft 21, and the detector fixing plate 30 is fixed to the support shaft 21 with screws (not shown). Next, the key 29a is attached to the rotating shaft 29a.
1 and the shaft hole 28 of the detector shaft fixing plate 28 shown in FIG.
(b) Insert according to the key groove 28c, position it using the guide pin hole 31a1 of the detector shaft fixing plate 28 and the guide pin hole 31a2 of the rotating body 22, and fix the detector shaft fixing plate 28 with screws (not shown). It is fixed to the rotating body 22.

Since the keyway 28c is fitted with a skiver, a slight displacement occurs in the rotation direction, so that the keyway 28c is fixed with a screw lock.

When it is necessary to replace the detector 21b after installing the hoisting device 6 on the elevator shaft, the faulty detecting device 4 shown in FIG.
0 and can be restored again by the procedure at the time of assembling the hoisting device 6.

As another embodiment, a structure having no spigot portion will be described.

FIG. 13 is a sectional view of the hoisting device 6, and only different points from FIG. 3 will be described. Detector fixing plate 3
The only difference is that a guide pin 32b for fixing 0 and a guide pin 31b for fixing the detector shaft fixing plate 28 are added. FIG. 13 has the same purpose as FIG. 4, and guide pins 31b and 32b are added on the Y axis. 14 and 15
Is almost the same as FIGS. 5 and 6. Guide pin holes 31b1 and 32b1 are added, and the number of mounting holes 32e is four. Further, the shaft 20a is completely fixed to the detector shaft fixing plate 28, and the entire detection device 40 is integrated. FIG. 16 is the same as FIG. 13 except that guide pin holes 31b2 and 32b2 are added.

At the time of assembling the hoisting device 6, the integrated detecting device 40 shown in FIG. 15 is cored using guide pins, and the detector fixing plate 30 is fixed to the support shaft 21 with screws (not shown). At the same time, the detector shaft fixing plate 28 is fixed to the rotating body 22 with screws (not shown).

[0032]

According to the present invention, when it is necessary to replace the detector after installing the hoisting device on the elevator shaft, the detector can be replaced inside the elevator shaft without removing the hoisting device.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a traction elevator.

FIG. 2 is a layout diagram of an elevator device.

FIG. 3 is a cross-sectional view of the elevator device.

FIG. 4 shows a positional relationship between a magnetic pole position and a guide pin for mounting a detector.

FIG. 5 is a positional relationship between a guide pin hole and a mounting hole of the detection device.

FIG. 6 is a schematic diagram of a detection device.

FIG. 7 is a mounting plate of a detection device.

FIG. 8 is a detector shaft mounting plate.

FIG. 9 is a detector mounting plate.

FIG. 10 shows a positional relationship between a guide pin hole and a fixing screw hole of a rotating body, a support shaft, and the like.

FIG. 11 is a detailed view of a rotating body and a spigot portion of a support shaft.

FIG. 12 is a sectional view of an elevator apparatus according to another embodiment.

FIG. 13 shows a magnetic pole position and a positional relationship between a guide pin for mounting a detector according to another embodiment.

FIG. 14 shows a positional relationship between a guide pin hole and a mounting hole of a detection device according to another embodiment.

FIG. 15 is a schematic diagram of a detection device according to another embodiment.

FIG. 16 shows a positional relationship between a rotating body, a guide pin hole of a support shaft, and a fixing screw hole of another embodiment.

FIG. 17 shows the positional relationship between the magnetic pole position and the detector mounting guide pin according to another embodiment.

[Explanation of symbols]

1 ... car, 2 ... counterweight, 6 ... hoisting device,
7: traction sheave, 21: support shaft, 21a: space, 22: rotating body, 28: detector shaft fixing plate, 29b: detector, 29a: detector rotating shaft, 30: detector fixing plate.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hiromi Iyoda 1070 Ma, Hitachinaka-shi, Ibaraki F-term in Mito Plant, Hitachi, Ltd.F-term (reference) DD01 EE01 FF00 FF01 5H611 AA00 BB08 PP07 QQ00 QQ03 TT01 UA04

Claims (6)

[Claims] A traction sheave driven by a permanent magnet electric motor having a stator inside and a rotor outside;
In an elevator apparatus including a hoisting rope wound around the traction sheave and a car suspended so as to be able to ascend and descend by the hoisting rope, at least the permanent magnet type electric motor is provided in a support shaft of the permanent magnet type electric motor. An elevator apparatus comprising a detection device including a detector for detecting a magnetic pole position. 2. The elevator apparatus according to claim 1, wherein the detection device has a fixing member for fixing the detector and a fixing member for fixing the axis of the detector. 3. The detection device outputs a magnetic pole position when a guide pin of a fixing member fixing the detector and a guide pin of the fixing member fixing the axis of the detector are positioned on the Y axis. The elevator apparatus according to claim 2, wherein the elevator apparatus is configured. 4. In the detection device, a fixing member for fixing the detector is fixed to the rotating body at the guide position for centering, and a fixing member for fixing the shaft of the detector is fixed to the support shaft for the centering guide. 3. The elevator apparatus according to claim 2, wherein the magnetic pole position is output when the angle between the centering guide positions is a predetermined angle. 5. In the detector, a fixing member for fixing the detector is fixed to the rotating body at a guide position for centering, and a fixing member for fixing the shaft of the detector is fixed to a support shaft for the centering guide. 3. The elevator apparatus according to claim 2, wherein the position relationship at the time of the first assembly can be restored. 6. A spigot portion for fixing a fixing member for fixing the detector to a support shaft, and a centering guide,
2. The elevator apparatus according to claim 1, further comprising a spigot portion for fixing a shaft of the detector to the rotating body and a centering guide.