JP4284123B2 - Hoisting machine and elevator device equipped with hoisting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus provided with a hoisting machine that is required to be downsized.
[0002]
[Prior art]
Conventionally, elevator devices equipped with hoisting machines that are required to be reduced in size are disclosed in, for example, Japanese Patent Application Laid-Open No. 63-277190, Japanese Patent Publication No. 7-45315, and Japanese Patent Publication No. 9-506237. It is configured.
[0003]
[Problems to be solved by the invention]
None of the above conventional techniques considers the disassembly and assembly of the hoisting machine, and there is a problem that a great deal of labor and time are required for the disassembly and assembly.
[0004]
An object of the present invention is to provide a hoisting machine that can be easily disassembled and assembled and an elevator apparatus equipped with the hoisting machine.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a fixed frame, a fixed shaft that extends perpendicularly to the fixed frame and is cantilevered, a stator provided on the fixed frame, and the fixed shaft a rotary frame which is rotatably supported via a bearing, a mounting et a sheave detachably on the side surface of the opposite to the fixed frame side of the rotating frame, provided with a larger diameter than the previous Kitsunasha A peripheral wall formed on the outer periphery of the rotary frame, the outer peripheral surface of which serves as a rotary drum, a rotor formed of a permanent magnet provided on the inner periphery of the peripheral wall of the rotary frame so as to face the stator, and the rotation The child, the stator, the fixed frame, the rotating frame, and the fixed shaft constitute an abduction type motor that is pivotally supported so as to face the outer peripheral surface of the peripheral wall and slides on the outer peripheral surface of the peripheral wall The contact brake is provided so that it can be seen without disassembling, and the sliding contact of the brake is decelerated. It is to crack.
[0006]
With the above configuration, the assembly and disassembly work can be performed with the motor and the sheave as separate parts. Therefore, the work is simplified, and replacement can be performed in parts such as a sheave.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0008]
A car 3 is guided in a vertically movable manner by a pair of car guide rails 2A and 2B which are erected in the hoistway 1 at intervals. This car 3 has a car door 3D for getting on and off, and pivotally supports a pair of guide pulleys 4A and 4B on both sides of the bottom opening. The main rope 5 passes through the bottom of the car 3 by being wound around the guide pulleys 4A and 4B. One end of the main rope 5 is supported by, for example, a beam 6 on the ceiling side of the hoistway 1.
[0009]
A pair of weight guide rails 7A and 7B are installed on the hoistway 1 in parallel with the car guide rails 2A and 2B at an interval, and the counterweight 8 is guided so as to be movable up and down. ing. A guide pulley 9 is pivotally supported on the counterweight 8 and the other end of the main rope 5 is wound around the guide pulley 9 and supported by the beam 6 on the ceiling side.
[0010]
On the other hand, a support base 10 is installed in the upper part of the hoistway 1, and a hoisting machine 11 is supported on the support base 10. The hoisting machine 11 has a sheave 26 which will be described later and winds the main rope 5 that reaches the guide pulley 9 of the counterweight 8 through the guide pulleys 4A, 4B at the bottom of the car 3. .
[0011]
Next, a specific configuration of the hoisting machine 11 will be described. The hoisting machine 11 is configured based on a base 12 fixed to the support base 10. In other words, the base 12 is provided with a fixed frame 13 having a vertical surface 14, and a fixed shaft 15 extending at a right angle to the vertical surface 14 and extending horizontally is cantilevered. The fixed shaft 15 has a large diameter portion 15a on the cantilever side and a small diameter portion 15b on the free end side. The rotating frame 16 is rotatably supported on the small diameter portion 15b of the fixed shaft 15 via bearings 18A and 18B.
[0012]
The rotating frame 16 is formed in a bottomed cylindrical shape or cup shape by a disc-shaped bottom portion 17 having a bearing holding portion 18 at the center and a peripheral wall 19 formed at the periphery of the bottom portion 17. Then, the rotating frame 16 is rotated to the small diameter portion 15b of the fixed shaft 15 via the bearings 18A and 18B so that the bottomed cylindrical opening approaches the vertical surface 14 of the fixed frame 13 at equal intervals. Supports freely. The bearings 18A and 18B are preferably arranged at intervals in the axial direction in order to rotate the rotating frame 16 stably. The outer peripheral surface 20 of the bearing holding portion 18 of the rotary frame 16 and the inner and outer peripheral surfaces of the peripheral wall 19 are formed concentrically with the axis of the fixed shaft 15.
[0013]
Thus, the rotary frame 16 pivotally supported so as to be concentric with the fixed shaft 15 supports the rotor 21 on the inner periphery of the peripheral wall 19. The rotor 21 may be formed by attaching a plurality of permanent magnets to the inner periphery of the peripheral wall 19, and a rotor core embedded with a plurality of permanent magnets may be disposed on the inner periphery of the peripheral wall 19. Further, a rotor core around which the rotor winding is wound may be disposed on the inner periphery of the peripheral wall 19.
[0014]
The rotor 21 and a stator 22 having a gap in the circumferential direction are fixed to the fixed frame 13. The stator 22 includes a stator core 23 having a hole penetrating the fixed shaft 15 and formed by laminating silicon steel plates, and a stator winding 24 wound around the stator core 23. It is fixed to the fixed frame 13 via a bracket 25.
[0015]
The rotor 21, the stator 22, the fixed frame 13 that supports the stator 22, the rotating frame 16 that supports the rotor 21, and the fixed shaft 15 that supports the rotating frame 16 constitute an abduction type motor. ing. Here, the outer diameter portion of the motor is an outer peripheral surface of the peripheral wall 19 of the rotary frame 16 that supports the rotor 21.
[0016]
Further, the rotary frame 16 has a sheave 26 fixed to the outside of the bottomed cylindrical bottom portion 17, in other words, the anti-fixed frame 13 side of the rotary frame 16. That is, the sheave 26 is fixed using the outer peripheral surface 20 of the bearing holding portion 18 formed on the bottom portion 17 of the rotating frame 16 so as to be concentric with the fixed shaft 15. In this configuration, since the rotating frame 16 forms a rotating part of the motor, the sheave 26 is attached and fixed to the rotating part of the motor. In order to reduce the size of the motor, the sheave 26 is formed so that the rope groove 26G has a smaller diameter than the outer diameter of the motor, that is, the outer peripheral surface of the peripheral wall 19 of the rotary frame 16. It is fixed by screwing a bolt 27 into the bottom portion 17. A mounting hole 28 is provided at the center of the sheave 26 so that the centers of the mounting hole 28 and the rope groove 26G are the same, and the diameter of the mounting hole 28 is the same as that of the bearing. It is formed in a size that can be attached to the outer peripheral surface of the holding portion 18 with a minute gap. Therefore, since the outer peripheral surface of the bearing holding portion 18 is formed concentrically with the axis of the fixed shaft 15, the rope groove 26 </ b> G can be formed only by mounting the sheave 26 on the outer peripheral surface of the bearing holding portion 18 of the rotary frame 16. The center coincides with the axis of the fixed shaft 15.
[0017]
Note that the sheave 26 is provided with the rope groove in order to secure a necessary frictional force with the main rope 5 when the main rope 5 is wound and the car 3 and the counterweight 8 are moved up and down. 26G is formed in a V-groove, and is formed of a material having excellent wear resistance different from that of the rotary frame 16 so that it can be used for a long time against friction with the main rope 5.
[0018]
Furthermore, the shape of the sheave 26 is not particularly limited as long as the sheave 26 has a function capable of being driven by being wound around the main rope 5. For example, the sheave 26 may have a cylindrical shape with the rope groove 26G cut. Good.
[0019]
In addition, a brake 29 is provided on the outer periphery of the peripheral wall 19 of the rotary frame 16. The brake 29 includes a pair of brake arms 30A and 30B pivotally supported at one end by the base 12, and a brake pivotally supported by an intermediate portion of the brake arms 30A and 30B so as to face the outer peripheral surface of the peripheral wall 19. Shoes 31A, 31B, a pair of braking shafts 32A, 32B facing the other ends of the braking arms 30A, 30B, and braking springs 33A, 33B provided to attract the braking shafts 32A, 32B; And an electromagnet 34 that operates to separate the braking shafts 32A and 32B against the braking springs 33A and 33B. And the drum type brake is comprised by using the surrounding wall 19 of the rotating frame 16 which the said brake shoes 31A and 31B oppose as a rotating drum of the brake 29. FIG.
[0020]
The peripheral wall 19 of the rotating frame 16 is also worn to some extent due to sliding contact with the brake shoes 31A, 31B, but the sliding contact of the brake shoes 31A, 31B with the peripheral wall 19 is the speed of the car 3. Is just before being stopped after being sufficiently decelerated, the amount of wear is small compared to the contact between the sheave 26 and the main rope 5. Therefore, the replacement time of the peripheral wall 19 of the rotating frame 16 that becomes the rotating drum of the brake 29 is more than the replacement time of the sheave 26 once every 5 to 10 years.
[0021]
Further, a cylindrical body 35 concentric with the fixed shaft 15 is provided from the bottom 17 of the rotary frame 16 in a space surrounded by the fixed frame 13 and the rotary frame 16. The cylindrical body 35 protrudes so as to be orthogonal to the vertical surface 14 of the fixed frame 13 and forms a plurality of slits (not shown) spaced in the circumferential direction. A sensor 36 is supported on the fixed frame 13 so as to sandwich the slit of the cylindrical body 35 from both sides, and the speed of the motor is detected by the sensor 36.
[0022]
Since the cylindrical body 35 and the sensor 36 dislike dust, a seal portion is formed between the vertical surface 14 of the fixed frame 13 and the end of the peripheral wall 19 of the rotating frame 16 approaching the vertical surface 14. As a specific configuration of the seal portion, a seal body 37 that slides with respect to the other of the vertical surface 14 and the peripheral wall 19 is provided to prevent intrusion of dust and the like, and the peripheral wall 19 of the rotating frame 16. A configuration may be considered in which a partition wall 14R protruding so as to face the entire circumference of the peripheral wall 19 with a minute gap is provided on the inner side of the end of the peripheral wall 19 from the side of the vertical surface 14 to which the end approaches. However, the seal body 37 and the partition wall 14R may be used together as shown in the figure depending on the location and environment where the elevator apparatus is installed, and the structure of only the partition wall 14R or only the seal body 37 prevents dust from entering. You may do it.
[0023]
In the above configuration, maintenance inspection of the brake 29 can be visually observed from the outside, so that disassembly for maintenance inspection is not necessary. However, since the hoisting machine 11 is downsized, maintenance and inspection of the motor, the sensor 36, and the like cannot be performed unless they are disassembled. However, according to the embodiment of the present invention, the rotor 21, the cylinder 35, and the sheave 26 of the motor supported by the rotating frame 16 are extracted by pulling the rotating frame 16 from the fixed shaft 15 to the opposite side of the fixed frame 13. Can be removed at the same time. After the rotary frame 16 is pulled out from the fixed shaft 15, the motor stator 22 and the sensor 36 supported by the fixed frame 13 can be maintained and inspected as they are, and parts can be replaced as necessary. it can. On the other hand, since the pulled out rotating frame 16 can be visually observed inside the cup shape, maintenance and inspection of the rotor 21 and the cylinder 35 of the motor and replacement of parts can be performed.
[0024]
After the maintenance check, if the rotating frame 16 is attached to the fixed shaft 15 in the reverse order of disassembly, the operation is completed.
[0025]
Further, the sheave 26 may be slipped between the main rope 5 due to wear of the rope groove 26G due to contact with the main rope 5, and in such a case, the sheave may be generated. 26 must be replaced. However, according to the embodiment of the present invention, the bolt 27 is removed and the sheave 26 is removed from the rotary frame 16, and the new sheave 26 is mounted using the outer peripheral surface 20 of the bearing holding portion 18 as a guide, and the bolt 27 is penetrated. If it is screwed into the rotating frame 16, the rope groove 26 </ b> G of the new sheave 26 is fixed concentrically with the fixed shaft 15.
[0026]
As described above, according to the embodiment of the present invention, the hoisting machine 11 can be easily disassembled and assembled, and the centering after assembling can be simplified. it can.
[0027]
FIG. 4 shows another embodiment according to the present invention. The difference from the above embodiment is the outer peripheral shape of the rotary frame 16, and the same reference numerals as those in FIGS. 1 to 3 indicate the same parts. The description will not be repeated.
[0028]
According to this embodiment, the disk 38 orthogonal to the fixed shaft 15 is formed on the extension of the bottom wall 17 of the peripheral wall 19 of the rotary frame 16 to the outer periphery, and a known electromagnetic disk brake (see FIG. By disposing (not shown), the hoisting machine 11 with an electromagnetic disc brake can be obtained.
[0029]
Further, in place of the disk 38, a disk 39 is formed on the opening side of the peripheral wall 19 of the rotary frame 16 and an electromagnetic disk brake (not shown) is opposed to the disk 39, whereby the disk 39 is reinforced thickened. Since the rigidity on the opening side of the peripheral wall 19 can be increased, the thickness of the peripheral wall 19 can be reduced. However, when the peripheral wall 19 of the rotating frame 16 described in the above-described embodiment is used as a rotating drum of the brake 29, a reinforcing thick ring is formed on the opening side of the peripheral wall 19, so that the peripheral wall 19 is Since the peripheral wall 19 is not deformed by the applied clamping pressure, the wall pressure of the peripheral wall 19 can be reduced.
[0030]
Next, FIGS. 5 and 6 show the optimal arrangement of the devices in the hoistway 1, and the same reference numerals as those in FIGS.
[0031]
In the hoistway 1, a pair of car guide rails 2 </ b> A and 2 </ b> B are erected at intervals on both outer sides of the car 3 with respect to the car door 3 </ b> D. Further, at the bottom of the car 3, the guide pulleys 4A and 4B spaced apart in the same front direction as the pair of car guide rails 2A and 2B are viewed in plan with respect to the car guide rails 2A and 2B. It is pivotally supported near the side of the car door 3D.
[0032]
In the space between the side of the guide pulley 4A of the car 3 and the side wall of the hoistway 1, a pair of weight guide rails 7A, 7B spaced apart from each other along the entrance / exit direction of the car 3 is set up to make a counterweight 8 Guide the up and down. In addition, the pair of weight guide rails 7A and 7B are disposed in the back of the space in plan view, in other words, closer to the side opposite to the car door 3D with respect to the car guide rail 2A.
[0033]
On the other hand, in a plan view, one end in the radial direction of the sheave 26 of the hoisting machine 11 overlaps or approaches one end in the radial direction of the guide pulley 4A projecting outward from the side wall of the car 3. Has been placed. The side surface of the sheave 26 is installed in parallel to the distance direction of the pair of weight guide rails 7A and 7B. One end in the radial direction is on the side of the weight guide rail 7A and the other end in the radial direction is on the side. It is located on the weight guide rail 7B side.
[0034]
A guide pulley 9 is pivotally supported on the upper portion of the counterweight 8, and the radial end of the guide pulley 9 overlaps or approaches the radial other end of the sheave 26. The pair of weight guide rails 7A and 7B are arranged so as to be inclined with respect to the interval direction.
[0035]
Since the counterweight 8, the guide pulleys 4A, 4B, 9 and the sheave 26 are arranged with respect to the car 3 as described above, it can be efficiently installed in the narrow hoistway 1, and the hoisting machine can be installed. Even if it is installed in the hoistway 1, the area of the hoistway is not increased.
[0036]
Each embodiment described above is a hoisting machine 11 using an abduction type motor in which the rotor 21 in the rotating frame 16 is arranged to face the outer diameter side of the stator 22. As shown in the figure, the same effect can be obtained even if an adder-type motor having the rotor 21 opposed to the inner diameter side of the stator 22 is used for the hoisting machine 11.
[0037]
In the case of a rotor adder type motor, the stator 22 is supported by the fixed frame 13 via a holding member 22Y located on the outer diameter side thereof. It becomes the outer periphery.
[0038]
As mentioned above, the sheave of the hoisting machine used for the elevator apparatus by this invention is a structure attached to the rotating frame supported by the fixed shaft. However, when a motor whose rotor is configured on a rotating shaft is used in a hoist, it is conceivable to attach and fix a sheave on the rotating shaft. Since it is structurally troublesome to attach the vehicle in a removable manner, in such a case, it is necessary to attach the sheave to the rotating portion of the motor excluding the rotating shaft in a removable manner.
[0039]
【The invention's effect】
As described above, according to the present invention, the amount of wear on the peripheral wall can be reduced, and the hoisting machine and the hoisting machine can be easily disassembled and assembled without requiring disassembly for maintenance and inspection of the brake . An elevator device equipped with a machine can be obtained.
[Brief description of the drawings]
FIG. 1 is a partially broken side view showing an embodiment of a hoist of an elevator apparatus according to the present invention.
FIG. 2 is a front view of the hoisting machine shown in FIG.
FIG. 3 is a schematic perspective view showing the concept of an elevator apparatus according to the present invention.
FIG. 4 is a partially broken side view showing another embodiment of the elevator machine hoist according to the present invention.
FIG. 5 is a front view showing an arrangement of devices in accordance with an actual elevator apparatus according to the present invention.
6 is an enlarged plan view of FIG. 5;
FIG. 7 is a partially broken side view showing another embodiment of a hoisting machine for an elevator apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Hoisting machine, 13 ... Fixed frame, 15 ... Fixed axis | shaft, 16 ... Rotating frame, 17 ... Bottom part,
18 ... bearing holding part, 19 ... peripheral wall, 21 ... rotor, 22 ... stator, 26 ... sheave,
29 ... Brake.

Claims (3)

A fixed frame, a fixed shaft that extends perpendicularly to the fixed frame and is cantilevered, a stator provided on the fixed frame, and is rotatably supported by the fixed shaft via a bearing. that the rotary frame, the rotary frame opposite to the fixed frame side of the removably mounted et the sheave to the side of and are formed prior to the outer periphery of the rotary frame provided with a larger diameter than Kitsunasha, its periphery A peripheral wall whose surface is a rotating drum, a rotor made of a permanent magnet provided on the inner periphery of the peripheral wall of the rotating frame facing the stator, the rotor, the stator, the fixing frame, The rotating frame and the fixed shaft constitute an abduction type motor, and can be viewed without disassembling a brake that is pivotally supported so as to face the outer peripheral surface of the peripheral wall and slidingly contacts the outer peripheral surface of the peripheral wall. The hoisting machine is characterized in that the sliding contact of the brake is performed after being decelerated. Before Kitsuna vehicles, hoisting machine according to claim 1, wherein the rotating frame is heterologous material. In an elevator apparatus having a hoisting machine installed in a hoistway and a car that moves up and down in the hoistway via a rope wound around a sheave of the hoisting machine, the hoisting machine is fixed A frame, a fixed shaft that extends perpendicularly to the fixed frame and is cantilevered, a stator provided on the fixed frame, and is rotatably supported by the fixed shaft via a bearing a rotating frame, the rotary frame opposite to the fixed frame side of the removably mounted et the sheave to the side of and are formed prior to the outer periphery of the rotary frame provided with a larger diameter than Kitsunasha, the outer circumferential surface thereof A rotating drum, a rotor made of a permanent magnet provided on the inner periphery of the rotating wall facing the stator, the rotor, the stator, the fixing frame, the rotation frame, and it forms an outer rotor type motor with the fixed shaft, so as to face the outer peripheral surface of the peripheral wall It is supported, provided so as to be visible without dismantling the brake sliding contact with the outer peripheral surface of the peripheral wall, elevator apparatus characterized by sliding contact of the brake is made after being decelerated.

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