JP2016037336A - Elevator device and hoist for elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoist for an elevator device which can achieve compactification of a detachment space and a maintenance space of an electromagnetic brake, and in which maintenance work of the electromagnetic brake is easy.SOLUTION: A hoist for an elevator device includes: a sheave which is provided via a bearing at a hoist housing in a rotatable manner, and around which a rope is wound; a brake disc 10 which integrally rotates with the sheave; and an electromagnetic brake 9 which stops or decelerates the rotation of the brake disc 10 and the sheave by applying a brake force to the brake disc 10. Both ends of the electromagnetic brake 9 are mounted on the hoist housing in a rotatable manner by two pieces of support shafts 19b, and when performing maintenance of the electromagnetic brake 9, out of the two pieces of support shafts 19b, one support shaft 19b is removed, and the electromagnetic brake 9 is rotated with the other support shaft 19b being a rotation fulcrum, and the electromagnetic brake 9 is fixed by an electromagnetic brake fixing part 23 provided at the hoist housing.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an elevator apparatus, and more particularly, to an elevator apparatus hoisting machine including a braking mechanism.

  In a conventional elevator hoisting machine, a rotor block in which a drive sheave and a brake disk are integrated with a rotor of an electric motor is formed in a substantially disk shape, and an outer peripheral edge of the rotor block is used as a brake disk. The rotor is integrally provided on one side of the block, and the drive sheave is integrally provided on the other side. A stator of the electric motor is attached to the inner surface of the housing, which is a fixed member, so as to face the rotor in the axial direction, and a friction material (brake pad) is pressed against the brake disc on the outer peripheral edge of the housing. A braking actuator (electric coil) is attached.

  In order to ensure a predetermined braking torque, such a conventional elevator hoisting machine braking device is provided with two electromagnetic brakes that are independent of the braking disk. In addition, a large electromagnetic brake mounting space is required at two locations radially outward of the braking disk. In recent years, elevators are required to be compact in installation space and to be improved in maintenance, and electromagnetic brakes are also required to be reduced in size and improved in maintainability.

  As a background art in this technical field, for example, there is a technique such as Patent Document 1. Patent Document 1 states that “a motor rotor, a drive sheave for winding up a hoisting rope, and a brake disk of a disc brake are integrated to form a rotating body block, and the electric motor is installed on the fixed member side. The rotating body block is rotated by the magnetic force acting between the stator of the rotor and the rotor, and the rotating body block is braked by the wear material of the disk brake being pressed against the side surface of the braking disk. In the hoisting machine, an elevator hoisting machine characterized in that the magnetic action surfaces of the rotor and the stator of the electric motor are opposed to each other in the radial direction is disclosed.

JP 2004-299824 A

  In a conventional elevator hoisting machine, when performing maintenance on the electromagnetic brake, the electromagnetic brake is detached from the hoisting machine, and the inside of the electromagnetic brake is inspected and parts are replaced. Sufficient space is required to safely remove and install the machine. In addition, a sufficient work space is required to safely and efficiently perform inspections and parts replacement in the electromagnetic brake removed from the hoisting machine.

  According to the elevator hoisting machine of Patent Document 1, it is possible to suppress the axial deflection of the rotating body block and prevent the control disk and the friction material from interfering with each other. There is no disclosure or description regarding the space saving of the maintenance space and work efficiency.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an elevator apparatus that can reduce the space for attaching and detaching the electromagnetic brake and the maintenance space of the hoisting machine and can easily perform maintenance work of the electromagnetic brake.

  Another object of the present invention is to provide a hoisting machine for an elevator apparatus that can reduce the space for attaching and detaching the electromagnetic brake and the maintenance space, and that facilitates maintenance work of the electromagnetic brake. It is to provide.

  As means for solving the above-mentioned problems, the present invention is an elevator apparatus that raises or lowers the car in a hoistway by winding or unwinding a rope linked to the car by a hoisting machine. The hoisting machine is provided rotatably on a hoisting machine housing via a bearing, and is provided in connection with a sheave for winding the rope, and the sheave, and integrally with the sheave. A brake disc that rotates, and an electromagnetic brake that stops or decelerates rotation of the brake disc and the sheave by applying a braking force to the brake disc, and the electromagnetic brake supports two ends of the brake. A shaft is rotatably attached to the hoisting machine housing. When the electromagnetic brake is maintained, one of the two support shafts is removed and the other support shaft is removed. Wherein the shaft as the rotation fulcrum to rotate the electromagnetic brake, characterized by fixing the electromagnetic brake by the electromagnetic brake fixing portion provided on the hoist casing.

  The present invention also relates to an elevator apparatus hoisting machine that raises or lowers the car in a hoistway by hoisting or unwinding a rope linked to the car, the elevator machine hoisting machine. Is provided rotatably on a hoisting machine housing via a bearing, a sheave around which the rope is wound, a brake disk that is provided in connection with the sheave, and rotates integrally with the sheave, An electromagnetic brake that stops or decelerates the rotation of the brake disk and the sheave by applying a braking force to the brake disk, and the electromagnetic brake has both ends thereof supported by two support shafts. When the electromagnetic brake is maintained, it is attached to the housing in a rotatable manner, one of the two support shafts is removed, and the other support shaft is used as a rotation fulcrum. Rotate the electromagnetic brake, characterized by fixing the electromagnetic brake by the electromagnetic brake fixing portion provided on the hoist casing.

  ADVANTAGE OF THE INVENTION According to this invention, in the elevator apparatus, the installation / removal space of the electromagnetic brake of a hoisting machine and the maintenance space can be made compact, and the elevator apparatus with which the maintenance work of an electromagnetic brake is easy is realizable.

  In addition, according to the present invention, in the hoisting machine for an elevator apparatus, it is possible to realize a hoisting machine for an elevator apparatus that can reduce the space for attaching and detaching the electromagnetic brake and the maintenance space and can easily perform maintenance work on the electromagnetic brake. .

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a figure which shows the winding machine for elevator apparatuses which concerns on one Embodiment of this invention. It is a figure which shows the winding machine for elevator apparatuses which concerns on one Embodiment of this invention. 1 is a partial cross-sectional view of an elevator apparatus hoist according to an embodiment of the present invention. It is a figure which shows the support structure of the electromagnetic brake device of the hoisting machine for elevator apparatuses which concerns on one Embodiment of this invention. It is a figure which shows the fixed state of the electromagnetic brake device at the time of the maintenance of the winding machine for elevator apparatuses which concerns on one Embodiment of this invention. It is an enlarged view of the fixed state of the electromagnetic brake device at the time of maintenance of the hoisting machine for elevator devices according to one embodiment of the present invention. It is a figure which shows the elevator apparatus which concerns on one Embodiment of this invention. It is a figure which shows the elevator apparatus which concerns on one Embodiment of this invention. It is a figure which shows the elevator apparatus which concerns on one Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  The present invention is not limited to the following examples, and includes various modifications and application examples within the scope of the technical concept of the present invention.

  First, the elevator apparatus using the elevator apparatus hoisting machine according to the present embodiment will be described with reference to FIGS.

  In FIG. 6, each of the counterweight 26 and the car 27 is directly linked to the rope 30 to balance the weight of the counterweight 26 and the car 27, and the rope 30 is wound up by the hoisting machine 31 provided at the upper part. Or it is an elevator apparatus of the type which raises or descends the passenger car 27 in the hoistway 24 by rewinding.

  The elevator apparatus of the type shown in FIG. 6 is an elevator apparatus with a machine room in which a machine room 25 in which a control panel 29, a hoisting machine 31, and the like are installed is provided at the upper part of the hoistway 24. The inside can be configured relatively simply.

  7 and 8, each of the counterweight 26 and the car 27 is indirectly linked to the rope 30 to balance the weight of the counterweight 26 and the car 27, and the rope 30 is moved by the hoisting machine 31. The elevator apparatus is a type that raises or lowers the car 27 in the hoistway 24 by winding or unwinding.

  FIG. 7 shows an elevator apparatus in which the hoisting machine 31 is provided on the upper side of the hoistway 24, and FIG. 8 shows the hoisting machine 31 on the lower side of the hoistway 24, for example, a floor surface or a side wall in the pit. Is an elevator device of the type provided in

  The elevator apparatus of the type shown in FIG. 7 and FIG. 8 is an elevator apparatus without a machine room in which the control panel 29, the hoisting machine 31 and the like are installed in the hoistway 24, and the machine room 25 as shown in FIG. 6 is unnecessary. Because there are no protrusions at the top of the building, there is no influence of the north side oblique line restriction or shade restriction, and since no load is applied to the upper part of the building, the hoistway 24 can be designed relatively freely. .

  Next, details of the hoisting machine 31 of the elevator apparatus shown in FIGS. 6 to 8 will be described with reference to FIGS. 1A to 5.

  FIG. 1A shows a front view of an elevator apparatus hoist according to the present embodiment, and FIG. 1B shows a side view thereof. 2 shows a cross-sectional view of the elevator machine hoisting machine viewed from the same direction as FIG. 1B.

  1A and 1B, a hoisting machine of an elevator apparatus has a hoisting machine housing 1 fixedly installed in a hoistway, and a rotating body block 2 rotatably attached to the hoisting machine housing 1. .

  As shown in FIG. 2, the hoisting machine housing 1 is formed with an annular recess 3 formed on the front side, and a cylindrical support wall 5 protruding from the tip of the boss 4 left at the center of the annular recess 3. Has been. A shaft hole 6 is formed at the axial center position of the support wall 5 and the boss portion 4 so as to penetrate the hoisting machine housing 1. A stator 8 of the electric motor 7 is attached to the inner surface of the outer peripheral wall of the annular recess 3. The stator 8 has a winding and continuously changes the magnetic field by energization.

  In FIG. 1A, the rotating body block 2 has a substantially disk shape as a whole. In FIG. 2, the shaft center portion is supported by a support shaft 15 via a bearing 13, and the outer peripheral edge portion of the disk is described later. A brake disc 10 of the brake is configured. A rotor 11 of the electric motor 7 is extended on one side of the rotating body block 2, and a driving sheave 12 for winding or unwinding a hoisting rope on the other side of the rotating body block 2, that is, hoisting A sheave on which the rope is wound is fixed with bolts or the like.

  In FIG. 2, the rotor 11 of the electric motor 7 has a permanent magnet 11b fixed to the outer periphery of a cylindrical wall 11a formed integrally with the rotating body block 2, and the magnetic action surface of the permanent magnet 11b faces radially outward. It is like that. And this rotor 11 is inserted and arrange | positioned in the annular recessed part 3 of the hoisting machine housing | casing 1, and the magnetic action surface of the rotor 11 and the stator 8 has opposed the radial direction on both sides of the air gap.

  At least one electromagnetic brake 9 is attached to the upper end of the hoisting machine housing 1. In this embodiment, as shown in FIG. 1A, two electromagnetic brakes 9 are provided at the upper end portion of the hoisting machine housing 1 and are 180 degrees symmetrical with respect to the longitudinal center line of the brake disc 10, that is, The electromagnetic brakes 9 are arranged at positions that are symmetrical with respect to the vertical center line of the brake disk 10 and close to each other at positions close to the vertical center line.

  FIG. 3 shows a support structure for attaching the electromagnetic brake 9 to the hoisting machine casing 1. The electromagnetic brake 9 is fixed to the hoisting machine housing 1 via a support shaft (brake housing) 20.

  A brake actuator 17 is attached to the electromagnetic brake 9. The brake actuator 17 includes a friction material (not shown) that is a pair of brake pads disposed on both sides of the brake disk 10, and a core that constitutes the brake actuator 17 by electromagnetic action due to energization during normal traveling of the elevator. A braking force is greater than the spring force of a brake spring 18 (not shown) provided in 17a (FIG. 2), and the armature 17b (FIG. 2) moves in the opposite direction to the brake disc 10, whereby the brake is It becomes an open state.

  On the other hand, when the power is turned off, the armature 17b is moved to the brake disk 10 side by the brake spring 18 (not shown), and the friction material (brake pad) is pressed against the brake disk 10, thereby causing the rotor block 2 to move. A braking force is applied.

  As shown in FIGS. 3 and 4, there are holes in the vicinity of both ends of the support shaft (brake housing) 20 of the electromagnetic brake device 9 for rotatably supporting the support shaft 19 a and the support shaft 19 b. The support shaft 19a and the support shaft 19b are inserted therein, and the structure is fixed to the hoisting machine housing 1 by the fixing plate 21 and the shaft fixing bolt 22.

  Here, when one of the support shafts 19a and 19b attached to the electromagnetic brake 9 is removed, the electromagnetic brake 9 can rotate around the other support shaft, that is, as a rotation fulcrum. It has a simple structure.

  Next, a state where the electromagnetic brake 9 is removed from the braking disk 10 during maintenance of the electromagnetic brake 9 will be described with reference to FIG.

  At the time of maintenance of the electromagnetic brake 9, of the two support shafts 19 a and 19 b that fix the electromagnetic brake 9 to the hoisting machine housing 1, the side closer to the top of the hoisting machine casing 1, that is, the upper side The support shaft 19a is removed, the electromagnetic brake 9 is rotated around the support shaft 19b in the outer circumferential direction of the brake disc 10, and the electromagnetic brake 9 is fixed at the position where the electromagnetic brake 9 is rotated to the electromagnetic brake fixing portion 23. Do.

  This electromagnetic brake fixing portion 23 is permanently installed in the hoisting machine casing 1 and it is not necessary to remove a jig, work table or the like every time maintenance is performed, so that workability is greatly improved.

  The electromagnetic brake fixing portion 23 will be described with reference to FIG. The electromagnetic brake fixing part 23 is in contact with a support shaft (brake housing) 20 that holds the braking actuator 17 of the electromagnetic part brake 9, and also exerts an influence on braking when force is applied to the electromagnetic brake 9 during maintenance work. The applied force is not applied to the actuator 17.

  Two support shafts (brake housings) 20 are provided on both sides of the electromagnetic brake 9 so as to sandwich the braking actuator 17, but the electromagnetic brake fixing portion 23 is disposed at a position away from the center of the braking disk 10. As the hoisting machine main body becomes larger or the space required for the hoisting machine width direction increases due to the rotation angle of the electromagnetic brake 9 becoming larger, the electromagnetic brake 9 has an electromagnetic force closer to the support shaft 19b. It is desirable to dispose the brake fixing portion 23.

  At this time, the electromagnetic brake 9 is rotated so that the center of gravity of the electromagnetic brake 9 when the electromagnetic brake 9 is fixed by the electromagnetic brake fixing portion 23 is located closer to the electromagnetic brake fixing portion 23 than the axis of the support portion 19b and the electromagnetic brake fixing portion 23. Thus, the fixing of the electromagnetic brake 9 by the electromagnetic brake fixing portion 23 can be stabilized, and the maintenance work of the electromagnetic brake 9 can be easily performed.

  As described above, according to the hoisting machine for an elevator apparatus in this embodiment, the hoisting machine is disposed at two locations on the outer side in the radial direction of the braking disk, and is fixed to the two support shafts on the casing of the hoisting machine. When one of the two support shafts is removed, the brake disc is sandwiched between the support shafts on the side closer to the floor surface of the two support shafts in the electromagnetic brake that can rotate around the other support shaft. In the electromagnetic brake that rotates to the opposite side, the work fixing part for fixing the electromagnetic brake and working is arranged on the main body of the hoisting machine, and the floor surface of the two support shafts of the electromagnetic brake during maintenance It is possible to remove the support shaft at the upper part of the machine and rotate the electromagnetic brake to the work fixing part and fix it. Therefore, the electromagnetic brake can be easily arranged at the maintenance workable position. ing. Since the fixing portion for maintenance work can fix the electromagnetic brake at a position necessary for the maintenance work, the electromagnetic brake can be attached and detached at a position where the space necessary for maintenance can be minimized.

  In addition, by fixing the mounting / removal space required for maintenance of the electromagnetic brake to the minimum position, it is possible to reduce the overall dimensions of the hoisting machine, and it is not necessary to hire or secure a working space for maintenance work. The characteristics are greatly improved.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Hoisting machine housing, 2 ... Rotating body block, 3 ... Annular recessed part, 4 ... Boss part, 5 ... Support wall, 6 ... Shaft hole, 7 ... Electric motor, 8 ... Stator, 9 ... Electromagnetic brake, 10 ... Brake disk , 11 ... rotor, 11a ... cylindrical wall, 11b ... permanent magnet, 12 ... drive sheave, 13 ... bearing, 15 ... support shaft, 17 ... brake actuator, 17a ... core, 17b ... amateur, 18 ... brake spring, 19a ... support Axis, 19b ... support shaft, 20 ... support shaft (brake housing), 21 ... fixing plate, 22 ... shaft fixing bolt, 23 ... electromagnetic brake fixing part, 24 ... hoistway, 25 ... machine room, 26 ... balance weight, 27 ... Ride car, 28 ... Landing door, 29 ... Control panel, 30 ... Rope, 31 ... Hoisting machine.

Claims (10)

An elevator apparatus that raises or lowers the car in a hoistway by winding or unwinding a rope linked to the car with a hoisting machine,
The hoisting machine is provided rotatably on a hoisting machine housing via a bearing, and a sheave for winding the rope;
A brake disc that is connected to the sheave and rotates integrally with the sheave;
An electromagnetic brake that stops or decelerates rotation of the brake disk and the sheave by applying a braking force to the brake disk,
Both ends of the electromagnetic brake are rotatably attached to the hoisting machine housing by two support shafts. When the electromagnetic brake is maintained, one of the two support shafts is supported. , The electromagnetic brake is rotated using the other support shaft as a rotation fulcrum, and the electromagnetic brake is fixed by an electromagnetic brake fixing portion provided in the hoisting machine casing.   2. The electromagnetic brake is attached at two positions on the upper side of the hoisting machine casing and symmetrically with respect to the longitudinal center line of the braking disk. The elevator apparatus as described.   When maintaining the electromagnetic brake, the upper support shaft of the two support shafts is removed, and the electromagnetic brake is rotated using the lower support shaft as a rotation fulcrum. The elevator apparatus according to claim 2, wherein the electromagnetic brake is fixed by an electromagnetic brake fixing portion. The electromagnetic brake includes a braking actuator that applies a braking force to the braking disk;
A brake housing that supports the braking actuator,
The elevator apparatus according to any one of claims 1 to 3, wherein when the electromagnetic brake is maintained, the brake housing is fixed by the electromagnetic brake fixing portion.   The electromagnetic brake fixing portion is provided in the hoisting machine housing such that when the electromagnetic brake is fixed, the center of gravity of the electromagnetic brake is positioned on the electromagnetic brake fixing portion side with respect to the axis of the support shaft. The elevator apparatus according to any one of claims 1 to 4, wherein the elevator apparatus is provided. A hoisting machine for an elevator apparatus that raises or lowers the car in a hoistway by winding or unwinding a rope linked to the car,
The elevator machine hoisting machine is rotatably provided on a hoisting machine housing via a bearing, and a sheave for winding the rope;
A brake disc that is connected to the sheave and rotates integrally with the sheave;
An electromagnetic brake that stops or decelerates rotation of the brake disk and the sheave by applying a braking force to the brake disk,
Both ends of the electromagnetic brake are rotatably attached to the hoisting machine housing by two support shafts. When the electromagnetic brake is maintained, one of the two support shafts is supported. The elevator brake is characterized in that the electromagnetic brake is rotated using the other support shaft as a rotation fulcrum, and the electromagnetic brake is fixed by an electromagnetic brake fixing portion provided in the hoisting machine casing. Machine.   The electromagnetic brakes are attached to two positions on the upper side of the hoisting machine casing and symmetrically with respect to the longitudinal center line of the braking disk. The hoisting machine for elevator apparatuses described.   When maintaining the electromagnetic brake, the upper support shaft of the two support shafts is removed, and the electromagnetic brake is rotated using the lower support shaft as a rotation fulcrum. The elevator machine hoisting machine according to claim 7, wherein the electromagnetic brake is fixed by an electromagnetic brake fixing portion. The electromagnetic brake includes a braking actuator that applies a braking force to the braking disk;
A brake housing that supports the braking actuator,
The elevator machine hoisting machine according to any one of claims 6 to 8, wherein when the electromagnetic brake is maintained, the brake housing is fixed by the electromagnetic brake fixing portion.   The electromagnetic brake fixing portion is provided in the hoisting machine housing such that when the electromagnetic brake is fixed, the center of gravity of the electromagnetic brake is positioned on the electromagnetic brake fixing portion side with respect to the axis of the support shaft. A hoisting machine for an elevator apparatus according to any one of claims 6 to 9.

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