JP2005335824A - Elevator hoist - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hoist for an elevator that can be easily installed in a narrow space between an outer surface of an elevator and a wall of a shaft, in a horizontal plane of projection of the shaft. <P>SOLUTION: A motor 10 is provided in a recess in a side surface of a large diameter rotary body 7, and an electromagnetic brake 16 is provided in a recess in a side surface of a small diameter rotary body 12. The motor 10, the electromagnetic brake 16, and pulley grooves 6, 11, 17 in the large diameter rotary body 7, etc., are disposed to overlap in the horizontal projection plane. This hoist is thus composed in a thin form with shorter outer size in the direction along the rotation axial line of the large diameter rotary body 7, etc. The hoist can thus be easily installed in the narrow space between the outer surface of the elevator and the wall of the shaft in the horizontal plane of projection of the shaft. Nonconformity of restriction in elevator installation due to difficulty of installation of the hoist between them is thus eliminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  According to the present invention, a frame and a stator winding of an electric motor are integrally formed, and a rotor of an electric motor provided with an armature corresponding to the stator winding is formed integrally with a driving sheave. The present invention relates to a hoisting machine for an elevator formed to be thin by shortening an outer dimension in a direction along a rotation axis of a vehicle.

  In a conventional elevator hoist, a stator winding is provided on the inner peripheral surface of the outer peripheral edge of the frame, and a rotating body is pivotally attached to a support shaft provided on a side surface of the frame. And a rotary body is arrange | positioned in the fitting state inside the outer periphery part of a flame | frame, and an armature is mounted on the outer peripheral surface of a rotary body facing a stator coil | winding.

  A plurality of rope grooves are formed in the outer peripheral surface at a position away from the armature mounting location in the longitudinal direction of the pivot axis of the rotating body. Moreover, an electromagnetic brake is provided in a recess facing the armature mounting position on the outer peripheral portion of the rotating body. The electromagnetic brake is formed by an electromagnet mechanism and a braking piece mechanism provided on the frame side, and a braking surface provided on the rotating body side and arranged to face the braking piece mechanism.

  The conventional elevator hoisting machine is configured as described above, and the main rope of the elevator is wound around the rope of the rotary body, and when the electric motor is energized, the rotary body rotates and the main rope is driven. A lifting body such as a car connected to the main rope is moved up and down. Further, when the electric motor is de-energized, the electromagnet mechanism of the electromagnetic brake is also de-energized, and the car or the like that is stopped by braking the rotating body by the brake spring of the brake piece mechanism is held in that state. . (For example, refer to Patent Document 1).

JP 2000-289954 A (summary, FIG. 2)

  A conventional elevator hoisting machine is installed in a narrow space between the outer surface of a lifting body such as a car and the hoistway wall on the horizontal projection surface of the elevator hoistway. It is designed to be thin with a short outer dimension in the direction along it. However, in the hoisting machine, the rope is provided on one side in the longitudinal direction of the pivot axis of the rotating body and the electromagnetic brake is provided on the other side, so that the outer dimension in the direction along the rotating axis of the rotating body becomes long.

  Therefore, there is a problem that it is difficult to install the hoisting machine in a narrow space between the outer surface of the lifting body and the hoistway wall, and the installation of the elevator in the building is restricted. In addition, since the outer dimension in the direction along the rotation axis of the rotary body of the hoisting machine is long, the floor area of the elevator car that can be installed with respect to the predetermined horizontal projection area of the hoistway becomes narrower, and the predetermined floor area This increases the horizontal projection area of the hoistway for installing the elevator car and increases the construction cost of the hoistway.

  The present invention has been made to solve such problems, and can be easily installed in a narrow space between the outer surface of the hoisting body and the hoistway wall on the horizontal projection surface of the hoistway. The purpose is to obtain a hoisting machine.

  In the elevator hoisting machine according to the present invention, a plurality of support shafts that are erected on one vertical line apart from each other on the vertical plane of the frame and the axis lines are horizontally disposed, and a rope groove is provided on the outer periphery. A small-diameter rotating body that is pivotally attached to one of the support shafts and arranged near the upper side of the frame, and a rope groove having a diameter larger than that of the small-diameter rotating body is provided on the outer periphery. A large-diameter rotating body that is pivotally attached to the lower side of the frame, a stator winding provided on the frame side, and an armature provided on either rotating body side, and the small-diameter rotating body and the large-diameter An electric motor configured on one of the rotating bodies, an electromagnet mechanism and a braking piece mechanism provided on the frame side, and a braking surface provided on one of the rotating bodies, and an electromagnetic configured on the other of the above two Formed by engaging the brake and the above Re is a transmission mechanism for accelerating the rotational speed of the small diameter rotary body is provided than the rotational speed of the large diameter rotor.

  In the elevator hoist according to the present invention, an electric motor or an electromagnetic brake is disposed in a recess formed in a side surface of a rotary body such as a large-diameter rotary body, and the electric motor, the electromagnetic brake, the large-diameter rotary body, and the like rotate. The body ropes are arranged in a superposed state on the horizontal projection plane. Therefore, the hoisting machine can be made thin by shortening the outer dimension in the direction along the rotation axis of the rotating body such as the large-diameter rotating body. For this reason, the hoisting machine can be easily installed in a small narrow space between the outer surface of the elevator and the hoistway wall on the horizontal projection surface of the elevator hoistway. Therefore, it is difficult to install the hoist between the outer surface of the elevator and the hoistway wall, and there is an effect of eliminating the problem that the installation of the elevator is restricted. Further, since the hoisting machine can be made thin in the direction along the rotation axis of the rotating body such as a large-diameter rotating body, the floor area of the elevator car that can be installed for a predetermined horizontal projection area of the hoistway is reduced. This has the effect of eliminating the disadvantage of narrowing, and also has the effect of suppressing an increase in hoistway construction costs caused by an increase in the horizontal projection area of the hoistway in order to install an elevator car having a predetermined floor area.

Embodiment 1 FIG.
1 to 3 are views showing an embodiment of the present invention. FIG. 1 is a front view showing a cover and a main portion of a large-diameter rotating body in a cutaway state. FIG. FIG. 3 is a diagram conceptually showing a state in which the main rope of the elevator provided with the hoisting machine of FIG. 1 is stretched. In the figure, a first support shaft 3, a second support shaft 4, and a third support shaft 5 are erected apart from each other on the vertical surface 2 of the frame 1, and the axes are horizontally arranged on one vertical line on the vertical surface 2. Is done.

  A large-diameter rotating body 7 having a rope groove 6 provided on the outer periphery is pivotally attached to the first support shaft 3 and is disposed closer to the lower side of the frame 1. The armature 8 is provided on the inner peripheral surface of the recess formed on the side surface of the large-diameter rotating body 7 on the side opposite to the frame 1, and the stator winding 9 is provided on the first support shaft 3, that is, the frame 1 side. The armature 8 is disposed in a recess provided on the side opposite to the frame 1 of the large-diameter rotating body 7. The armature 8 and the stator winding 9 constitute an electric motor 10.

  Further, a small-diameter rotating body 12 having a small-diameter rotator 12 having a smaller diameter than the diameter of the ridge groove 6 of the large-diameter rotator 7 is pivotally attached to the second support shaft 4 so that the large-diameter rotator 7 in the frame 1 is supported. It is arranged on the upper side. A braking surface 13 is provided on the inner peripheral surface of the recess formed on the side opposite to the frame 1 of the small-diameter rotating body 12, and the electromagnet mechanism 14 and the braking piece mechanism are provided on the second support shaft 4, that is, the frame 1 side. Reference numeral 15 denotes a recess formed on the side opposite to the frame 1 of the small-diameter rotating body 12 so as to face the braking surface 13.

  The braking surface 13, the electromagnet mechanism 14, and the braking piece mechanism 15 constitute an electromagnetic brake 16. When the electromagnet mechanism 14 is de-energized, the electromagnetic brake 16 performs a braking operation by the braking piece mechanism 15 being pressed against the braking surface 13 by the braking spring. When the electromagnet mechanism 14 is energized, the braking piece is attracted against the pressing force of the braking spring and is separated from the braking surface 13 to be in a non-braking state. In addition, a third rotating body 18, which is provided with a rope groove 17 having a diameter smaller than the diameter of the rope groove 11 of the small diameter rotating body 12 on the outer periphery, is pivotally attached to the third support shaft 5, so that the small diameter rotating body 12 in the frame 1 is supported. Arranged on the upper side.

  A large-diameter spur gear 19 is provided on both sides of the rope groove 6 on the outer periphery of the large-diameter rotating body 7. Further, a small-diameter spur gear 20 that meshes with the large-diameter spur gear 19 and has a smaller number of teeth than the large-diameter spur gear 19 is provided on both sides of the rope groove 11 on the outer periphery of the small-diameter rotating body 12. The small diameter spur gear 20 rotates at a higher speed than the large diameter spur gear 19. A third spur gear 21 that meshes with the small-diameter spur gear 20 on both sides of the rope groove 17 on the outer periphery of the third rotating body 18 and has a smaller number of teeth than the small-diameter spur gear 20 is provided. The third spur gear 21 rotates at a higher speed than the small diameter spur gear 20.

  The large-diameter spur gear 19, the small-diameter spur gear 20 and the third spur gear 21 constitute a transmission mechanism 22. Although the details will be described later, the rotational speed of the large-diameter spur gear 19 is increased and transmitted to the small-diameter spur gear 20, and the rotational speed of the small-diameter spur gear 20 is further increased and transmitted to the third spur gear 21. . Further, a cover 23 is provided so as to cover the large-diameter rotating body 7, the small-diameter rotating body 12, and the third rotating body 18 and is detachably attached to the frame 1.

  Further, the frame 1, that is, the hoisting machine is installed at the lower part of the elevator hoistway 24, and the car pulleys 26 are pivotally attached to both sides of the lower part of the car 25 that moves up and down the hoistway 24. A counterweight pulley 28 is pivotally attached to an upper portion of a counterweight 27 that moves up and down the hoistway 24. A first fixed pulley 29, a second stationary pulley 30, a third stationary pulley 31, and a fourth stationary pulley 32 are pivotally mounted on the hoistway 24, respectively.

  Then, one end of the first main rope 33 is connected to the upper part of the hoistway 24, wound around the car pulley 26, wound around the first fixed pulley 29, and then wound around the rope groove 6 of the large-diameter rotating body 7. It is hung, wound around the fourth stationary pulley 32 and wound around the counterweight pulley 28, and the other end is connected to the upper part of the hoistway 24.

  Further, one end of the second main rope 34 is connected to the upper portion of the hoistway 24, wound around the car pulley 26, and wound around the first fixed pulley 29. Next, it is wound around the second stationary pulley 30 and wound around the rope groove 11 of the small-diameter rotating body 12, and further wound around the third stationary pulley 31 and wound around the fourth stationary pulley 32, and the counterweight. The other end is wound around the pulley 28 and connected to the upper part of the hoistway 24.

  Then, one end of the third main rope 35 is connected to the upper portion of the hoistway 24, wound around the car pulley 26, wound around the first fixed pulley 29, and then wound around the rope groove 17 of the third rotating body 18. It is hung and wound around the fourth stationary pulley 32, wound around the counterweight pulley 28, and the other end is connected to the upper part of the hoistway 24. The second stationary pulley 30 and the third stationary pulley 31 are installed at a position where the second main rope 34 does not contact the third main rope 35 on the horizontal projection plane.

  In the elevator hoisting machine configured as described above, the gear ratio of the large-diameter spur gear 19, the small-diameter spur gear 20, and the third spur gear 21 of the transmission mechanism 22 that are meshed with each other is 6, the first main rope 33 wound around 6, the second main rope 34 wound around the rope groove 11 of the small-diameter rotating body 12, and the third main rope 35 wound around the rope groove 17 of the third rotating body 18. However, the driving speeds generated by the rotation of the wound rotating bodies are set to be equal.

  When the electric motor 10 is energized, the electromagnet mechanism 14 of the electromagnetic brake 16 is also energized. As a result, the braking piece of the braking piece mechanism 15 is attracted against the pressing force of the braking spring by the urging of the electromagnet mechanism 14 and the braking by the electromagnetic brake 16 is released. Further, the large-diameter rotating body 7 is rotated by the electric motor 10, and this operation is transmitted to the small-diameter rotating body 12 and the third rotating body 18 by the transmission mechanism 22.

  If the electric motor 10 is energized and the large-diameter rotating body 7 rotates in the direction of arrow B shown in FIG. 3, for example, the third rotating body 18 also rotates in the direction of arrow B. As a result, the first main rope 33 and the third main rope 35 are driven downward on the left side in FIG. 3 of the frame 1 and driven on the right side in FIG. At this time, the second main rope 34 is wound around the second stationary pulley 30 and the third stationary pulley 31.

  Therefore, the right side of the second main rope 34 in FIG. 3 of the frame 1 is driven downward, and the left side of the frame 1 in FIG. 3 is driven upward. Then, by driving the first main rope 33, the second main rope 34, and the third main rope 35, the car 25 is raised, the counterweight 27 is lowered, and the elevator is driven up and down.

  In the elevator hoist described above, the electric motor 10 or the electromagnetic brake 16 is disposed in a recess formed in the side surface of the rotary body such as the large-diameter rotary body 7, and the electric motor 10, the electromagnetic brake 16, and the large diameter are arranged. The rope grooves 6, 11, 17 of the rotating body such as the rotating body 7 are arranged in a superposed state on the horizontal projection plane. Therefore, the hoisting machine can be made thin by shortening the outer dimension in the direction along the rotation axis of the rotating body such as the large-diameter rotating body 7.

  For this reason, the hoisting machine can be easily installed in a small narrow space between the outer surface of the lifting body such as the car 25 and the wall of the hoistway 24 on the horizontal projection surface of the hoistway of the elevator. Therefore, it is difficult to install the hoisting machine between the outer surface of the lifting body such as the car 25 and the wall of the hoistway 24, and the problem that the installation of the elevator is restricted can be solved. And the disadvantage that the floor area of the elevator car 25 which can be installed with respect to the predetermined horizontal projection area of the hoistway 24 becomes narrow can be eliminated.

  In addition, since the elevator car 25 having a predetermined floor area is installed, an increase in hoistway construction cost caused by an increase in the horizontal projection area of the hoistway 24 can be suppressed. Further, the cover 23 can be easily attached and detached from the inside of the hoistway 24 by arranging the hoisting machine frame 1 so as to face the hoistway 24 wall. Thereby, the cover 23 can be removed and the electric motor 10, the electromagnetic brake 16, and the transmission mechanism 22 can be easily inspected and maintained.

  For this reason, maintenance work efficiency can be improved without providing a dedicated space for maintenance work, and it is not necessary to secure a separate space for maintenance work. )), The elevator can be easily installed. Furthermore, since the use efficiency of the space in the building where the elevator is installed is improved, the installation cost of the elevator can be reduced.

  Note that an elevator hoisting machine having the following configuration can be easily realized by applying the embodiment shown in FIGS. That is, the third rotating body 18 and the third spur gear 21 in FIG. 1 are eliminated, and a third rotating body is disposed between the large diameter rotating body 7 and the small diameter rotating body 12, The diameter of the spur gear is the intermediate diameter of the large diameter rotating body 7 and the small diameter rotating body 12, the large diameter spur gear 19, and the small diameter spur gear 20. Even with the elevator hoisting machine configured as described above, it is possible to obtain the same operation as that of the embodiment shown in FIGS.

  Further, the elevator hoisting machine having the following configuration can be easily realized by applying the embodiment shown in FIGS. That is, the third rotator 18 and the third spur gear 21 in FIG. 1 are abolished, and the third rotator is disposed below the large-diameter rotator 7 of the frame 1. The diameter of the gear is larger than that of the large-diameter rotating body 7 and the large-diameter spur gear 19. Even with the elevator hoisting machine configured as described above, it is possible to obtain the same operation as that of the embodiment shown in FIGS.

  Further, the elevator hoisting machine having the following configuration can be easily realized by applying the embodiment shown in FIGS. That is, a fourth rotating body is disposed between the large-diameter rotating body 7 and the small-diameter rotating body 12 in FIG. 1, and the diameters of the fourth rotating body and the fourth spur gear are set to the large-diameter rotating body 7 and the small-diameter rotating body 12, The diameter is intermediate between the large diameter spur gear 19 and the small diameter spur gear 20. Further, a fifth rotating body is disposed below the large-diameter rotating body 7 of the frame 1 in FIG. 1, and the diameters of the fifth rotating body and the fifth spur gear are larger than those of the large-diameter rotating body 7 and the large-diameter spur gear 19. Also have a large diameter.

  Even with the elevator hoisting machine configured as described above, it is possible to obtain the same operation as that of the embodiment shown in FIGS. In addition to the first main rope 33, the second main rope 34, and the third main rope 35, the fourth main rope and the fifth main rope can be added by adding the fourth rotary body and the fifth rotary body. it can. Accordingly, it is possible to easily cope with an elevator having a car with a large load capacity and to facilitate installation of a large load capacity elevator.

  Furthermore, the elevator hoisting machine having the configuration described below can be easily realized by applying the embodiment shown in FIGS. That is, even if the transmission mechanism 22 is configured by a winding transmission mechanism including a V belt, a steel belt, a roller chain, a toothed belt, etc., the same operation as the embodiment of FIGS. 1 to 3 can be obtained. it can.

Embodiment 2. FIG.
4 and 5 are views showing another embodiment of the present invention. FIG. 4 is a front view of the main part of the cover and large-diameter rotating body in a cutaway view, and FIG. 5 is a DD line in FIG. It is sectional drawing. In the figure, the same reference numerals as in FIGS. 1 to 3 indicate the corresponding parts, and the first idler gear 36 is pivotally attached to the vertical surface 2 of the frame 1 via a horizontal axis, and one side meshes with the large-diameter spur gear 19. The other side meshes with the small-diameter spur gear 20. A second idle gear 37 is pivotally attached to the vertical surface 2 of the frame 1 via a horizontal axis so that one side meshes with the small-diameter spur gear 20 and the other side meshes with the third spur gear 21.

  In the elevator hoist configured as described above, the large-diameter spur gear 19, the small-diameter spur gear 20, and the third spur gear 21 that mesh with each other via the first idle gear 36 or the second idle gear 37 of the transmission mechanism 22. The tooth number ratio is set in the same manner as in the embodiment shown in FIGS. When the electric motor 10 is energized, the electromagnetic brake 16 operates in the same manner as the embodiment shown in FIGS.

  The large-diameter rotating body 7 is rotated by the electric motor 10, and this operation is transmitted to the small-diameter rotating body 12 and the third rotating body 18 by the transmission mechanism 22. At this time, the large diameter spur gear 19, the small diameter spur gear 20, and the third spur gear 21 mesh with each other via the first idle gear 36 or the second idle gear 37, so that the arrow E shown in FIG. Rotate to each. Therefore, the second stationary pulley 30 and the third stationary pulley 31 described above are provided, and the first main rope 33 and the third main rope 35 are arranged in the same direction without the second main rope 34 being wound around the pulleys. The two main ropes 34 are driven.

  Also in the elevator hoisting machine configured as described above, the electric motor 10 or the electromagnetic brake 16 is disposed in a recess formed in the side surface of the rotary body such as the large-diameter rotary body 7. 16 and the rope grooves 6, 11, 17 of the rotating body such as the large-diameter rotating body 7 are arranged in a superposed state on the horizontal projection plane. Therefore, the hoisting machine can be made thin by shortening the outer dimension in the direction along the rotation axis of the rotating body such as the large-diameter rotating body 7.

  Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 3 can be obtained also in the embodiment of FIGS. Further, in the embodiment shown in FIGS. 4 and 5, it is not necessary to install the second stationary pulley 30 and the third stationary pulley 31 described above, and manufacturing costs and maintenance costs can be reduced.

Embodiment 3 FIG.
6 and 7 are views showing another embodiment of the present invention. FIG. 6 is a front view of the main part of the cover and the large-diameter rotating body in a cutaway view, and FIG. 7 is a FF line in FIG. It is sectional drawing. In the figure, the same reference numerals as in FIGS. 1 to 3 indicate the corresponding parts, and two rope grooves 38 are provided in the width direction of the outer periphery of the large-diameter rotating body 7. In addition, in the width direction of the outer periphery of the small diameter rotating body 12, two rope grooves 39 having a smaller diameter than the diameter of the rope groove 38 of the large diameter rotating body 7 are provided.

  Then, the two first-type main ropes 40 are respectively wound around the rope grooves 38 of the large-diameter rotating body 7 and are stretched on the hoistway 24 in the same manner as the first main rope 33 shown in FIG. Further, two second-type main ropes 41 are respectively wound around the rope grooves 39 of the small-diameter rotating body 12 and are stretched on the hoistway 24 in the same manner as the second main rope 34 shown in FIG.

  The elevator hoisting machine configured as described above includes the third rotating body 18, the third spur gear 21 and the third main rope 35 of the elevator hoisting machine in the embodiment shown in FIGS. In addition, the first main rope 33 and the second main rope 34 are replaced with two first-type main ropes 40 and second-type main ropes 41 arranged in parallel, respectively. And the electric motor 10 is energized and an elevator is drive | operated similarly to embodiment of FIGS. 1-3.

  Also in the elevator hoisting machine configured as described above, the electric motor 10 or the electromagnetic brake 16 is disposed in a recess formed in the side surface of the rotary body such as the large-diameter rotary body 7. 16 and the rope grooves 40 and 41 of the rotating body such as the large-diameter rotating body 7 are arranged in a superposed state on the horizontal projection plane. Therefore, the hoisting machine can be made thin by shortening the outer dimension in the direction along the rotation axis of the rotating body such as the large-diameter rotating body 7.

  Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 3 can be obtained also in the embodiment of FIGS. It is to be noted that the hoisting machine can be configured easily by applying the embodiment shown in FIGS. 6 and 7 as described below. That is, the first idler gear 36 in FIG. 4 described above is provided between the large diameter spur gear 19 of the large diameter rotating body 7 and the small diameter spur gear 20 of the small diameter rotating body 12.

  Thereby, the small-diameter rotating body 12 can be rotated in the same direction as the large-diameter rotating body 7, and the same operation as that of the embodiment shown in FIGS. 4 and 5 can be obtained. In the embodiment shown in FIGS. 6 and 7, a large number of main ropes can be stretched with a small number of rotating bodies such as the large-diameter rotating body 7 or the like. Thereby, it is possible to easily cope with the design of an elevator having a car with a large load capacity.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a front view which fractures | ruptures and shows the principal part of a cover and a large diameter rotary body. AA sectional view taken on the line AA of FIG. The figure which shows notionally the tension state of the main rope in the elevator which installed the winding machine of FIG. It is a figure which shows Embodiment 2 of this invention, and is a front view which fractures | ruptures and shows the principal part of a cover and a large diameter rotary body. The DD sectional view taken on the line of FIG. It is a figure which shows Embodiment 3 of this invention, and is a front view which fractures | ruptures and shows the principal part of a cover and a large diameter rotary body. FF sectional view taken on the line of FIG.

Explanation of symbols

1 frame, 2 vertical plane, 3 first support shaft (support shaft), 4 second support shaft (support shaft), 6 tie groove, 7 large-diameter rotating body, 8 armature, 9 stator winding, 10 electric motor, 11 Tight groove, 12 Small diameter rotating body, 13 Braking surface, 14 Electromagnet mechanism, 15 Brake piece mechanism, 16 Electromagnetic brake, 17 Tight groove, 18 Third rotating body, 19 Large diameter spur gear, 20 Small diameter spur gear, 21 Three spur gears, 22 transmission mechanism, 36 first play gear (play gear), 38 tie groove, 39 tie groove.

Claims (5)

  A plurality of support shafts standing on one vertical line apart from each other on the vertical plane of the frame, and the axis lines thereof are horizontally arranged, and a rope groove is provided on the outer periphery and pivotally attached to one of the support shafts. A small-diameter rotating body arranged on the upper side of the frame, and a rope groove having a diameter larger than that of the small-diameter rotating body is provided on the outer periphery, and is pivotally attached to the other one of the support shafts. It consists of a large-diameter rotating body arranged on the lower side, a stator winding provided on the frame side, and an armature provided on any one of the rotating bodies, and both the small-diameter rotating body and the large-diameter rotating body. An electromagnetic motor configured on the other side of the above-described motor, an electromagnet mechanism and a brake piece mechanism provided on the frame side, and a braking surface provided on one of the rotating bodies. And is formed by engaging both of the above Elevator hoisting machine that includes a transmission mechanism for accelerating the rotational speed of the small diameter rotary body than the rotation speed of the large diameter rotor.   When it is pivotally attached to the other one of the support shafts and disposed closer to the upper side than the small-diameter rotator according to claim 1, a rope groove having a smaller diameter than that of the small-diameter rotator according to claim 1 is provided on the outer periphery. A small-diameter rotating body having the small-diameter rotating body according to claim 1 as a large-diameter rotating body is formed, and when arranged between the small-diameter rotating body and the large-diameter rotating body according to claim 1, A rope having a larger diameter than the small-diameter rotating body described above is provided to form a large-diameter rotating body for the small-diameter rotating body according to claim 1 and a small-diameter rotating body for the large-diameter rotating body according to claim 1. When the lower diameter rotating body according to the first aspect is disposed below the large diameter rotating body, the outer diameter is provided with a rope having a larger diameter than the large diameter rotating body according to the first aspect. A third rotating body that forms a large-diameter rotating body having a small-diameter rotating body as a body. Elevator hoisting machine according to claim 1 wherein symptoms.   The elevator hoisting machine according to any one of claims 1 and 2, wherein the small-diameter rotating body and the large-diameter rotating body are provided with a plurality of ropes on the outer periphery.   The transmission mechanism is formed by a large-diameter spur gear provided in a large-diameter rotating body and a small-diameter spur gear provided in a small-diameter rotating body and meshing with the large-diameter spur gear. Elevator hoisting machine.   5. An elevator gear according to claim 4, further comprising an idler gear provided between a large diameter spur gear and a small diameter spur gear, one side meshing with the large diameter spur gear and the other side meshing with the small diameter spur gear. Hoisting machine.

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