JP4341729B2 - Elevator equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rope-winding type elevator apparatus, and more particularly to an elevator apparatus that does not require a machine room.
[0002]
[Prior art]
In general, in an elevator apparatus, a car and a balance weight are disposed in a hoistway so that the car can be raised and lowered, and a hoisting machine is installed in a machine room defined at the top of the hoistway, and the car and the balance are installed. A hoisting rope for connecting a weight is wound around the traction sheave of the hoisting machine, and the car and the counterweight are raised and lowered through the hoisting rope by driving the hoisting machine.
[0003]
However, in such an elevator device, the machine room is constructed on the roof, so that the exterior of the building is damaged and the cost of continuous installation is high. Furthermore, the right to sunshine may be a problem in some places.
[0004]
Therefore, many elevator apparatuses that do not require a machine room have been proposed, and in particular, a machine in which a hoisting machine is installed in a balance weight and the machine room is eliminated has already been proposed (Japanese Patent Laid-Open No. 6-255959, in particular). (See Kaihei 7-137963, JP-A-7-137964, and JP-A-9-124259). FIG. 7 is a diagram showing a balance weight in which a motor with a traction sheave that constitutes a hoisting machine is provided, and in the hoistway 1 there are provided guide rails 2a, 2b for a car on the inner wall surface, The car 3 can be moved up and down along the guide rails 2a and 2b for the car. Also, counterweight guide rails 4a and 4b are provided between the rear surface of the car 3 and the inner wall surface of the hoistway with respect to the elevator platform, and the counterweight guide rails 4a and 4b are provided on the counterweight guide rails 4a and 4b. The counterweight 5 can be raised and lowered. In FIG. 7, the plane including the car guide rails 2a and 2b and the plane including the counterweight guide rails 4a and 4b are developed and illustrated on the same plane.
[0005]
A sheave beam 6 is attached to the uppermost end portion of the guide rail 2b for the car and the guide rail 4a for the weight so as to straddle them, and a turning sheave 7 is disposed on the sheave beam 6. Further, a traction sheave 10 that is rotationally driven by a driving motor 8 via a belt 9 is provided in the counterweight 5. On the other hand, on the bottom surface side of the car 3, two turning sheaves 11a and 11b are provided on a line inclined with respect to a center line extending in the left-right direction of the bottom surface. By the way, the car 3 and the counterweight 5 are counterbalanced via a hoisting rope 12. That is, one end of the hoisting rope 12 is fixed by a rope hitch 13 in the vicinity of the uppermost portion of the counterweight guide rail 4b and hung downward, wound around a traction sheave 10 provided on the counterweight 5 and upward. It extends and is wound around the turning sheave 7. The hoisting rope 12 turned by the turning sheave 7 extends downward to reach the car 3, passes through the turning sheave 11 a, 11 b, passes below the car 3 and extends upward again, and its tip is near the top of the hoistway 1. It is fixed to the rope hitch 14 provided in.
[0006]
[Problems to be solved by the invention]
However, in such an elevator apparatus, the plane orthogonal to the rotation axis of the turning sheave provided at the upper part of the hoistway, that is, the rotating surface is parallel to the wall surface on the rear side of the car in the hoistway, If one end of the turning sheave at the lower part of the car is to come directly under the turning sheave, it is necessary to extend a beam for installing the turning sheave at the lower part of the car. Therefore, the mass point of the car and the action point for lifting the car are greatly deviated, and there is a problem that a bending force is generated in the beam for fixing the turning sheave at the lower part of the car.
[0007]
In view of such a point, the present invention does not require a beam for installing the turning sheave at the lower part of the car to be greatly extended with respect to the car, and prevents an excessive bending force from acting on the beam. The purpose is to get the elevator device to get.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is provided on the back side of the car with respect to the platform, the car moving up and down along the guide rail for the car provided on the inner wall surface of the hoistway. A balance weight that moves up and down along the balance weight guide rail, a first turning sheave that is arranged at the top of the hoistway and changes the direction of the hoisting rope that suspends the load and the balance weight on both sides; A hoist having a traction sheave wound around the hoisting rope and driven to rotate by a motor, and the car is passed under the car through a second turning sheave provided at a lower part of the car. in the elevator apparatus is suspended by the rope, the second diverting sheave is attached to the lower surface of the car, ride in a direction inclined with respect to the left and right center line of the occupant Rikago Consists of two deflection sheaves at both ends of the beam extending from your rear side to the platform side is arranged, one end of the first diverting sheave disposed on the top of the hoistway, the cab The one end of the second turning sheave disposed on the back side is on the same vertical line, and the rotation surface of the first turning sheave is inclined with respect to the inner wall of the hoistway on the back side of the car The first turning sheave is installed in
[0009]
The invention according to claim 2 is characterized in that, in the invention according to claim 1, a traction sheave is provided inside the counterweight.
[0010]
According to a third aspect of the present invention, in the first aspect of the present invention, the traction sheave is provided at a lower portion of the car.
[0011]
Furthermore, the invention according to claim 4 is the invention according to claim 3, wherein at least one turning sheave is provided on the balancing weight, and the balancing weight is suspended by a hoisting rope wound around the turning sheave. It is characterized by that.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the figure, the same parts as those in FIG.
[0013]
FIG. 1 is a perspective view showing a schematic configuration of an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an enlarged view near a turning sheave at the top of the hoistway. Car guide rails 2a and 2b are laid vertically on the inner wall surface of the car, and the car 3 is engaged with the car guide rails 2a and 2b. The car 3 is connected to the car. The guide rails 2a and 2b are moved up and down.
[0014]
On the other hand, a pair of counterweight guide rails 4a and 4b are erected between the rear side and the hoistway inner wall surface 1a opposite to the platform of the car 3, and the counterweight guide rails are provided. A counterweight 5 is engaged with 4a and 4b, and the counterweight 5 is configured to move up and down along the counterweight guide rails 4a and 4b.
[0015]
Beams 15 extending in a direction inclined with respect to the center line L (FIG. 2) in the left-right direction of the car 3 are provided on the lower surface of the car 3, and turning sheaves 11a and 11b are provided at both ends of the beam 15. Is installed. A traction sheave 10 that is rotationally driven by a motor 16 is disposed in the counterweight 5.
[0016]
The car 3 and the counterweight 5 are counterbalanced via a hoisting rope 12, and one end of the hoisting rope 12 is fixed by a rope hitch 13 near the uppermost portion of the counterweight guide rail 4b and suspended downward. It is wound around a traction sheave 10 provided on the counterweight 5 and extends upward, and is wound around a turning sheave 7 provided near the top of the hoistway 1. The hoisting rope 12 turned by the turning sheave 7 extends downward to reach the car 3, passes through the turning sheave 11 a, 11 b, passes below the car 3 and extends upward again, and its tip is near the top of the hoistway 1. It is fixed to the rope hitch 14 provided in.
[0017]
Thus, when the traction sheave 10 is rotationally driven by the motor 16, the car 3 and the counterweight 5 are driven up and down in opposite directions via the hoisting rope 12.
[0018]
The above configuration is almost the same as that shown in FIG. 7, but in the present invention, the top turning sheave 7 has a plane orthogonal to the rotation axis of the turning sheave 7, that is, the rotation surface is the back of the car 3. As shown in FIGS. 2 and 3, one end of the top turning sheave 7 is on the same vertical line as one end of the turning sheave 11b of the car 3, as shown in FIGS. The other end of the turning sheave 7 is on the same vertical line as one end of the traction sheave 10.
[0019]
Accordingly, one end of the beam 15 provided with the turning sheaves 11a and 11b at the lower part of the car is greatly extended from the car 3, and the turning sheave 11b provided at the tip of the beam 15 is the same as the turning sheave 7 and the traction sheave 10 at the top. The hoisting rope 12 extending downward from both sides of the turning sheave 7 does not need to be located in the vertical plane, and can be suspended at the engaging position with the turning sheave 11b or the traction sheave 10, and the hoisting rope Twelve windings and operations can be performed reliably.
That is, in the embodiment of the present invention, it is not necessary to project the beam for installing the turning sheave at the lower part of the car largely outward from the car 3 by the above configuration, and the bending force acts on the beam more than necessary. Can be prevented. In addition, the space between the hoistway wall on the back side of the car and the car as seen from the platform can be used effectively, space saving of the hoistway can be realized, and the traction sheave inside the balance weight can be reduced. The position in the depth direction can be set freely.
[0020]
4 and 5 are views showing another embodiment of the present invention, in which a motor 16 is mounted on the lower portion of the car 3, that is, on the lower surface side of the bottom plate, and the traction sheave 10 attached to the motor 16 is wound up. The rope 12 is wound once, and one end side of the hoisting rope 12 is turned by the turning sheave 11 a and extends upward and is fixed to the rope hitch 14. On the other hand, the other end side of the hoisting rope 12 is turned upward by a turning sheave 11 b, extends upward, turned downward again by a turning sheave 7 at the top of the hoistway 1, and turned at the top end of the counterweight 5. It is fixed to the rope hitch 13 through the sheaves 17a and 17b.
[0021]
In this case as well, the traction sheave 10 is rotationally driven by the motor 16 so that the car 3 and the counterweight 5 can be raised and lowered via the hoisting rope 12, and the rotation surface of the turning sheave 7 at the top is changed. By providing the hoistway inner wall surface 1a with an inclination, the same effects as those of the embodiment shown in FIG. 2 are obtained.
[0022]
Thus, in the present embodiment, by providing the motor that rotationally drives the traction sheave 10 at the lower portion of the car, restrictions on the outer dimensions of the motor can be relaxed.
[0023]
Further, the two turning sheaves 17a and 17b provided on the counterweight 5 are arranged on a plane parallel to the hoistway inner wall surface 1a as with the counterweight 5, and the two turning sheaves 17a and 17b are arranged. The hoisting rope 12 extending upward from the rope can be vertically extended toward one end of the rope hitch 14 or the turning sheave 7, and the counterweight can be suspended with a good balance between the right and left sides.
[0024]
In the above embodiment, the balance weight 5 is provided with two turning sheaves 17a and 17b. However, as shown in FIG. 6, only one turning sheave 17 may be provided.
[0025]
【The invention's effect】
As described above, the present invention provides a balance weight guide rail provided on the back side of the car with respect to the platform that moves up and down along the guide rail for the car provided on the inner wall surface of the hoistway. A first turning sheave that changes the direction of a balance weight that moves up and down along the top of the hoistway, and that changes the direction of the hoisting rope that suspends the rider and the balance weight on both sides of the hoistway. A traction sheave that is driven and rotated by a motor, and the car is suspended by a hoisting rope that passes under the car through a second turning sheave provided at a lower part of the car. in it are elevator system, said second diverting sheave is attached to the underside of the car, from the back side of the cage in a direction inclined with respect to the left and right center line of the occupant Rikago Consists of two deflection sheaves arranged on both ends of the beam extending towards the field side, one end of the first diverting sheave disposed on the top of the hoistway, is disposed on the rear side of the car It said second as is on the one end and the same vertical line of the turning sheave, and the plane of rotation the first turning to be oblique to the hoistway wall of the rear side of the cab of the first diverting sheave Since the sheave is installed, it is not necessary to greatly extend one end of the beam provided with the turning sheave at the lower part of the car from the car, and it is possible to prevent the bending force from acting more than necessary on the beam. In addition, when the traction sheave is balanced and arranged at the lower part of the car, the space between the hoistway wall on the rear side of the car and the car as viewed from the landing can be used effectively. The space saving can be realized. Furthermore, when the traction sheave is installed at the lower part of the car, there are effects such as the restriction of the outer dimension of the motor that drives the traction sheave can be relaxed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of an elevator apparatus according to the present invention.
FIG. 2 is a plan view showing a schematic configuration of the elevator apparatus according to the present invention.
FIG. 3 is an enlarged view of a turning sheave at the top in FIG. 2;
FIG. 4 is a plan view showing another embodiment of the present invention.
FIG. 5 is a view showing a winding state of a winding rope in the apparatus shown in FIG. 4;
FIG. 6 is a view showing a winding state of a hoisting rope according to still another embodiment of the present invention.
FIG. 7 is a diagram showing an example of a conventional machine room-less elevator device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hoistway 2a, 2b Car guide rail 3 Car 4a, 4b Balance weight guide rail 5 Balance weight 7 Turning sheave 8, 16 Motor 10 Traction sheave 11a, 11b Turning sheave 12 Hoisting rope 15 Beams 17, 17a, 17b Turning sheave

Claims (4)

A car that moves up and down along a guide rail for a car provided on the inner wall of the hoistway,
A counterweight that moves up and down along a counterweight guide rail provided on the back side of the car with respect to the platform,
A first turning sheave disposed at the top of the hoistway and for changing the direction of a hoisting rope that suspends a car and a balance on both sides;
The winding rope is wound, and has a traction sheave that is rotationally driven by a motor,
In the elevator apparatus in which the car is suspended by a hoisting rope passed below the car through a second turning sheave provided at the lower part thereof,
The second turning sheaves are attached to the lower surface of the car and are respectively disposed at both ends of the beam extending from the back side of the car toward the landing side in a direction inclined with respect to the left-right center line of the car. It consists of two turning sheaves,
One end of the first turning sheave arranged at the top of the hoistway is on the same vertical line as one end of the second turning sheave arranged on the back side of the car, and the first turning The elevator apparatus characterized by installing the said 1st turning sheave so that the rotation surface of a sheave may become diagonal with respect to the hoistway inner wall surface of the back side of the said cage | basket | car.   The elevator device according to claim 1, wherein the traction sheave is provided inside the counterweight. The elevator apparatus according to claim 1, wherein the traction sheave is provided at a lower portion of a car.   The elevator apparatus according to claim 3, wherein the counterweight is provided with at least one turning sheave, and the counterweight is suspended by a hoisting rope wound around the turning sheave.

Images