JP2000318946A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a winder at the upper part of an elevator shaft and prevent interference between a hanging rope and a supporting member of the winder. SOLUTION: In an rope wind-up type elevator device, a lateral beam 18 is installed at the upper parts of a pair of right and left balancing weight guide rails 3, 3 with a deviation from a vertical plane including the pair of guide rails 3, 3 to the direction perpendicular to the vertical plane and a winder 20 is attached to the lateral beam 18 so that a traction sheave 21 of the winder 20 can be located in the vertical plane, whereby a vertical load caused in the winder is supported via the lateral beam 18 by the guide rails 3, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope hoist type elevator apparatus, and more particularly to an elevator apparatus in which a hoistway is reduced in space.

[0002]

2. Description of the Related Art Generally, in an elevator apparatus,
The car and the counterweight are lifted and lowered along the guide rails provided on the inner wall of the hoistway respectively, and the above-mentioned car and the counterweight are mounted on both sides of a pair of suspension ropes wound around the hoist. The car is suspended and its hoisting machine is configured to drive the car and the counterweight up and down.

However, in such an elevator apparatus, a machine room for accommodating a hoist and the like is provided above a hoistway with a wall interposed therebetween, and a building for creating a special space for the machine room is provided. In the case where the machine room is provided on the roof of a building, there is a problem that the appearance of the building may be impaired.

Therefore, there has been proposed an elevator apparatus in which a hoisting machine or the like is disposed in the hoistway by making good use of the space in the hoistway and does not require a special machine room as in the prior art.

FIG. 8 is a diagram showing a schematic structure of an elevator apparatus which does not require the above-mentioned machine room. A pair of left and right cars (only one of them is shown in the figure) is provided on the inner wall surface of the hoistway 1. And a pair of left and right guide rails 3 and 3 for counterweight are provided. A car 4 is engaged with the guide rail 2 so as to be able to move up and down along the guide rail 2. A counterweight 5 is engaged with the rails 3, 3 so as to be able to move up and down along the guide rails 3, 3.

A beam 6 extending between the two guide rails 3, 3 is provided at the top of the two guide rails 3, 3 for guiding the counterweight, and a hoisting machine 7 and a speed governor are provided on the beam 6. 8 are installed. A suspension rope 9 is wound around the traction sheave 7 a of the hoisting machine 7, and one end of the suspension rope 9 is hung downward and turned by a turning sheave 10 provided at a lower part of the car 4, It extends upward and is connected and held to a car rope hitch 11 provided on the upper part of the hoistway 1. The other end of the suspension rope 9 is wound around a turning sheave 12 provided on the counterweight 5, and the top end thereof is a rope hitch 1 for the counterweight.
3 is connected and held.

A support member 14 for supporting a horizontal load of the hoist 7 is provided between the hoist 7 and the hoistway wall.
Is provided, and the distal end portion of the support member 14 is engaged with, for example, an upper flange portion of the hoisting machine 7.

When the hoisting machine 7 is driven and the car 4 is lifted by the hanging rope 9, the counterweight 5
Is lowered, and the load from the hoisting machine 7 is transmitted to the building via the beam 6 and the guide rails 3.

[0009]

However, since the deflection sheave 12 for supporting the counterweight 5 is generally located on a neutral section extending between the guide rails 3, 3, the suspension rope 9 is also provided on the guide rails 3, 3. Must pass over a neutral cross section. Therefore, as shown in FIG.
Is provided on the neutral end of the guide rails 3, 3 and the movement of the hanging rope 9 is hindered by the beam 6, so that the beam 6 It is necessary to provide notches or holes or the like so that the beam 9 does not interfere with the beam.

However, since it is difficult to increase the width of the beam 6 due to restrictions on the size of the hoistway, there is a problem that it is difficult to secure the strength when notches are provided. Further, since the hoisting machine 7 needs to be provided in a very narrow space having the same area as the hoistway of the counterweight, the hoisting machine 7 has a thin disk shape having a small dimension in the rotation axis direction. Therefore, it is necessary to prevent the horizontal swing. However, as shown in FIG. 8, when the horizontal reinforcement is performed by the support member 14 such as a metal plate, the support member 14 is used to support the hoistway wall. There is a problem that the vibration is transmitted and the resident may feel uncomfortable vibration.

In view of the above, the present invention provides an elevator apparatus which does not have the above-described problems, allows installation of a hoisting machine in the upper part of a hoistway, and does not require a machine room. The purpose is to gain.

[0012]

According to the first aspect of the present invention,
A car and a counterweight, which are respectively lifted and lowered along guide rails provided on the inner wall surface of the hoistway, are suspended on both sides of a hanging rope wound around a hoisting machine installed at the upper part of the hoistway, and In an elevator apparatus that drives a car and a counterweight by a hoist, the upper part of the pair of left and right guide rails for the counterweight is deviated from a vertical plane including the pair of guide rails in a direction orthogonal to the vertical plane. The hoisting machine is mounted on the horizontal beam so that the traction sheave of the hoisting machine is positioned on a vertical plane including the pair of guide rails, and the vertical load generated on the hoisting machine is applied to the horizontal beam. And is supported by the guide rail via

According to a second aspect of the present invention, in the first aspect, the hoist includes a hoistway wall, a hoistway ceiling,
Alternatively, a support member fixed to the hoistway beam is engaged via a vibration isolating member, and the horizontal load of the hoist is supported by the support member.

According to a third aspect of the present invention, there is provided the first or second aspect.
In the invention described, the hoist has a disk-shaped rotation drive unit whose axial dimension is shorter than the diameter dimension, and the rotational axis dimension is smaller than the plane dimension perpendicular to the rotary axis. A thin fixing portion, and a supporting portion projecting in the same direction as the traction sheave of the hoist and attached to the cross beam is formed integrally with the fixing portion.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the supporting portion has a notch concave portion formed at a front end edge on a protruding side thereof, has a U-shape in plan view, and is wound in the notch concave portion. A hanging rope wound around the upper machine is inserted.

According to a fifth aspect of the present invention, in the third aspect of the present invention, the support portion has an E-shape in plan view having two notch recesses formed at a front end edge on a protruding side thereof, and the two notches. A suspension rope wound around a hoist is inserted into the recess.

According to a sixth aspect of the present invention, in any one of the third to fifth aspects of the present invention, a vibration isolating member is interposed between the supporting portion and the cross beam.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, at least one support point of the support portion formed in an E-shape in plan view is provided via a vibration isolating member having different characteristics from other support points. It is characterized in that it is attached to the cross beam.

The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the upper surface of the counterweight is provided on the upper surface of the counterweight with two left and right sides separated from each other in the same vertical plane as the counterweight. A turning sheave is provided.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, the same parts as those in FIG. 8 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a front view of a counterweight portion and a hoisting machine mounting portion of an elevator apparatus according to the present invention. A pair of vertically extending rear walls of a hoistway opposite to a doorway of a car are provided. Guide rails 3 and 3 for the counterweight are laid. A counterweight 5 is disposed between the pair of guide rails 3, 3, and the counterweight 5 is provided.
Are engaged with the guide rails 3, 3 so that the counterweight 5 can be moved up and down along the guide rails 3, 3 via the guides 15.

At the upper end of the counterweight 5, two turning sheaves 16, 16 are provided in a vertical plane including the left and right guide rails 3, 3 so as to be separated from each other in the left-right direction.

FIG. 1 shows a top of the guide rails 3 and 3.
Also, as shown in FIG. 2, a support leg 17 extending toward the rear wall surface of the hoistway is mounted, and a lateral beam 18 extending in the lateral direction is mounted and fixed on the rear ends of the support legs 17.
That is, at the top of the guide rails 3, 3, a cross beam 1 made of H-section steel is located at a position deviating from the vertical plane including the guide rails 3, 3 toward the rear wall side of the hoistway in a direction perpendicular to the vertical plane.
8 are installed. A support member 19 made of two H-beams orthogonal to the cross beam 18 is fixedly mounted on one side of the counterweight 5 on the cross beam 18.
The hoisting machine 20 is mounted and fixed thereon. The hoisting machine 20
Is arranged so that the rotation axis is oriented in a horizontal direction perpendicular to the cross beam 18, and a traction sheave 21 attached to the rotation axis is wound with a suspension rope 9 for raising and lowering the car 4 and the counterweight 5. I have.

The hoist 20 generally comprises a rotary drive unit 22 including a traction sheave 21 and a fixed part 23 having a support 23a for the hoist. In the case where the hoisting machine is provided, the axial dimension of the hoisting machine is restricted because it is disposed in the gap between the car in the hoistway and the hoistway wall. The thickness is limited.

In addition, since the traction sheave 21 whose thickness is determined by the number of ropes is provided in the rotary drive section 22, the rotary drive section 22 is formed in a disk shape whose axial dimension is shorter than its diametric dimension. Further, the fixed part 23 to which the rotation drive part 22 is fixed is also formed in a plate shape whose dimension in the rotation axis direction is thinner than the dimension in the plane direction perpendicular to the rotation axis.

As described above, the hoist itself becomes thin as a whole, and the load transmitted from the suspending rope 9 is reduced.
Since it is difficult to construct the device so as to be applied to the vicinity of the center of gravity of the hoisting machine, a moment is generated in the hoisting machine 20 so as to fall around a horizontal axis orthogonal to the rotation axis.

In order to cope with the above moment,
The plate-shaped fixing portion 23 has a support portion 23 that projects horizontally from the lower end in the same direction as the traction sheave 21.
a is integrally formed, and the support portion 23 a is mounted on the support member 19 via the vibration isolating member 24. An inverted L-shaped support member 26 is fixed to a shaft beam 25 provided on the rear wall surface of the shaft so as to extend in the axial direction. It is engaged with the front surface of the fixing portion 23 of the hoisting machine 20 via the vibration isolating member 27 (FIG. 2).

Therefore, as shown in FIG. 3, the traction sheave 21 of the hoisting machine 20 is disposed on a vertical plane including the axis of the guide rails 3, 3, that is, on the same vertical plane as the turning sheave 16. One end of a hanging rope 9 hung below the traction sheave 21 is turned upward by turning sheaves 16, 16 attached to the balancing weight 5, and the top end thereof is a rope provided on the cross beam 18. The hitch 13 is engaged. The other end of the hanging rope 9 also extends downward, is provided on the lower surface of the car 4 as shown in FIG. 3, is turned horizontally by the turning sheave 28a, and passes through the lower side of the car 4 4 is turned upward by a turning sheave 28b provided at the other end of the wire 4 and its top end is locked and fixed to the rope hitch 11.

That is, in the present embodiment, as described above, the cross beam 18 supporting the hoisting machine 20 is moved from the vertical plane including the guide rails 3, 3 to the rear wall surface of the hoistway in a direction orthogonal to the vertical plane. The hoisting machine 20 is mounted on the cross beam 18 and the traction sheave 21 of the hoisting machine 20 extends vertically including the axis of the guide rails 3, 3. The suspension rope 9 wound around the traction sheave 21
Can be suspended vertically without being interfered by the cross beams 18.

In general, the counterweight 5 has a thin structure in the front-rear direction as shown in FIG. 2 in order to reduce the area of the hoistway, and the turning sheave 16 generally has three suspension ropes 9. As a result, the hanging rope 9 occupies most of the dimension in the front-rear direction of the counterweight 5, and the suspension rope 9 passes on the neutral cross section of the guide rails 3, 3. Further, the angle between the groove of the traction sheave 21 and the suspension rope 9 must be less than a few degrees in order to prevent the suspension rope 9 from coming off the groove of the traction sheave 21. Can be suspended vertically, so that the above demand can be completely satisfied. Therefore, there is no need to provide a notch or a hole or the like for allowing the hanging rope 9 to pass through the cross beam 18, and the cross beam 18 can be given sufficient strength.

As described above, the hoist itself is thin, but its support portion 23a is provided so as to protrude axially forward of the hoist 20 and the support member 26 is attached to the fixing portion of the hoist 20. By engaging with 23, it is possible to sufficiently oppose a moment about to fall around an axis that is vertical and horizontal to the rotation axis of the hoisting machine, and the hoisting machine 20 can be stably supported. .

Further, a vibration isolating member 27 is interposed between the supporting member 26 and the fixing portion 23, and the supporting portion 23a of the hoist is supported on the vibration isolating member 24, so that the hoisting machine is supported. Unnecessary vibrations are transmitted to buildings such as the hoistway walls via the hoistway beams 25 and the guide rails 3 and 3, causing residents to feel uncomfortable vibrations, or the vibration of the guide rails causing the elevator It is possible to prevent the ride comfort from being affected.

FIG. 4 is an enlarged front view of a portion of the hoisting machine 20 shown in FIG. 1. As described above, the hoisting machine 20 is about to fall down around an axis that is perpendicular to the rotation axis and horizontal. Since a moment is generated, the dimension of the hoisting machine support portion 23a in the rotation axis direction of the hoisting machine 20 is lengthened. However, a hanging rope 9 suspended from the traction sheave 21 is provided on the front side of the supporting portion 23a. Since the support portion 23a passes through the
Cannot be made too long in the direction of the rotation axis. Therefore,
As shown in FIG. 5, a cutout recess 30 is formed at the front end edge of the projecting side of the support portion 23a to have a U-shape in a plan view, and the hanging rope 9 is inserted through the cutout recess 30 so that the support portion 23a can be inserted. By making the protrusion size of 23a larger, more stable support of the hoisting machine can be achieved.

FIGS. 6 and 7 show another embodiment of the present invention, in which two notches 30a and 30b are formed in the front end edge of the supporting portion 23a on the protruding side, and viewed in plan. E
And each of the notches 30a, 30b has a hanging rope 9
May be inserted.

By the way, the vibration of the hoisting machine 20 may be a vibration around the rotation axis of the hoisting machine caused by the torque ripple of the motor and the like.
The rigidity of the vibration isolating member 24 must be sufficiently small. However, a vibration-proof member such as a vibration-proof rubber generally has a smaller load-carrying capacity as its rigidity becomes smaller. Therefore, the rigidity cannot be reduced so much in the configuration of FIG. 1 that also supports a steady load from the hanging rope 9. . Therefore, as shown in FIG. 6, the support portion 23a is supported via three vibration isolating members 24a, 24b, and 24c. The rigidity of the central vibration isolating member 24b is large, and the vibration isolating members 24a, 24c at both ends are large. It can be configured by a combination that reduces the rigidity. In this case, the central vibration isolating member 24b supports the steady load of the hoist with high rigidity, and the displacement of the vibration isolating member 24b is small with respect to vibration around the rotation axis of the hoist. Therefore, almost no force is generated. On the other hand, since the vibration isolating members 24a and 24c at both ends have low rigidity, vibration around the rotation axis of the hoist is eliminated.

The turning sheave 16 of the counterweight 5
Is usually arranged only one at the center of the counterweight 5 due to cost and size restrictions. However, as shown in FIG. 1, when an elevator system having a so-called counterweight after-falling layout in which a counterweight 5 is arranged on the opposite side of the entrance to / from a car with a machine room-less elevator is required, In the configuration in which only one turning sheave is arranged at the center of the weight 5, the suspension rope 9 between the traction sheave 21 and the turning sheave is connected to the support portion 23a of the hoisting machine 20.
Or the angle of the hanging rope 9 fixed to the rope hitch 13 varies depending on the position of the counterweight 5, so that it is necessary to devise a rope fixing method of the rope hitch 13 part. The right guide rail 3 and the rope hitch 13 in FIG. 1 are arranged closer to the left side in FIG. 1 so that the deflection sheave is located at the center of the counterweight 5, so that the width of the counterweight is narrowed, and the vertical dimension is accordingly reduced. It is conceivable to increase the size, but the balance weight 5
Since the hoisting machine 20 is installed above the vertical direction, the vertical dimension of the counterweight 5 is limited.
It is not possible to reduce the spacing between them. Further, if only the rope hitch 13 is disposed on the hoisting machine side, that is, on the left side near the guide rail, the above problem can be solved.
The friction force reduces the efficiency of the elevator system.

On the other hand, in the present embodiment, two turning sheaves 16, 16 are provided at the upper end of the counterweight 5 so as to be separated from each other in the width direction of the counterweight. It can be sufficiently eliminated.

In the above embodiment, the support member 26 is mounted on the hoistway beam 25. However, in the case of a concrete structure or the like, the support member 26 is directly attached to the hoistway wall or ceiling by an anchor bolt or the like. Can also be fixed.

[0039]

As described above, according to the present invention, a cross beam is formed by displacing a pair of left and right guide rails for a counterweight from a vertical plane including the pair of guide rails in a direction perpendicular to the vertical plane. The hoist is mounted on the cross beam so that the traction sheave of the hoist is positioned on the vertical plane including the pair of guide rails, and the vertical load generated on the hoist is guided through the cross beam. Since it is supported by rails, it is possible to easily place a hoisting machine in the upper part of the hoistway, eliminating the need for a machine room, and to vertically suspend the suspension rope wound around the traction sheave without interference from the cross beams. Can be wound around the turning sheave for the counterweight, and it is not necessary to provide notches or holes for the hanging rope to pass through the cross beam, and the cross beam can be given sufficient strength. Can.

Further, by engaging the hoist installed on the cross beam with a support member fixed to a hoistway wall or the like via a vibration isolating member, it is possible to prevent the hoist from falling around the horizontal axis of the hoist. In addition to preventing the vibration, the vibration of the hoist can be prevented from being transmitted to the building. Further, by integrally providing a support portion projecting in the same direction as the traction sheave on the fixed portion of the hoist, the hoist can be stabilized against a moment about a horizontal axis perpendicular to the rotation axis. .

In the case where a notch recess for inserting a suspension rope is formed at the front edge of the projecting side of the projecting support portion,
The hanging rope can be sufficiently projected forward without interference of the suspension rope by the support portion, and the stability of the hoist can be improved. Further, by interposing two types of vibration isolating members having different stiffness at each support point of the support portion, it is possible to eliminate vibration around the rotation axis of the hoist.

Furthermore, by using two turning sheaves for the counterweight, interference between the suspension rope and the support portion can be reliably prevented, and the balance of the counterweight can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a counterweight portion showing an embodiment of the present invention.

FIG. 2 is a partial side view showing a configuration of a hoist attachment portion.

FIG. 3 is a plan view showing one embodiment of the present invention.

FIG. 4 is an enlarged front view of a hoist attachment portion according to the present invention.

FIG. 5 is a sectional view taken along the line VV in FIG. 4;

FIG. 6 is an enlarged front view of a hoist attachment portion according to another embodiment of the present invention.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a diagram showing an example of a conventional elevator system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 3 Guide rail for counterweight 4 Riding car 5 Counterweight 9 Suspension rope 16, 28a Turning sheave 18 Cross beam 19 Support member 20 Hoisting machine 21 Traction sheave 22 Rotation drive part 23 Fixed part 23a Support part 24, 27 Vibration member 26 Support member 30, 30a, 30b Notch recess

Claims (8)

[Claims] 1. A car and a counterweight which are respectively lifted and lowered along guide rails provided on an inner wall surface of a hoistway are provided on both sides of a suspension rope wound around a hoisting machine installed at the upper part of the hoistway. In an elevator apparatus for suspending and raising and lowering a car and a counterweight by the hoist, in the upper part of the pair of left and right guide rails for the counterweight, a vertical plane including the pair of guide rails and a vertical plane including the pair of guide rails. A cross beam is installed by displacing in the direction perpendicular to the cross beam, and the hoist is attached to the cross beam so that the traction sheave of the hoist is positioned on a vertical plane including the pair of guide rails, and the hoist is generated on the hoist An elevator apparatus wherein a vertical load is supported by the guide rail via the cross beam. 2. The hoist includes a hoistway wall, a hoistway ceiling,
The support member fixed to the hoistway beam is engaged via a vibration isolating member, and the support member supports the horizontal load of the hoisting machine. Elevator equipment. 3. A hoisting machine, comprising: a disk-shaped rotary drive section having an axial dimension shorter than a diameter dimension; and a rotational axis dimension being smaller than a plane dimension perpendicular to the rotary axis. 3. A thin fixing portion, wherein a supporting portion projecting in the same direction as the traction sheave of the hoist and attached to the cross beam is formed integrally with the fixing portion. Elevator equipment. 4. The support portion has a notch recess formed at the front end edge on the protruding side thereof, has a U-shape in plan view, and a suspension rope wound around a hoist is inserted into the notch recess. The elevator apparatus according to claim 3, wherein: 5. The support portion has two notch recesses formed at the front end edge on the protruding side thereof, and has an E-shape in plan view. In the two notch recesses, a suspension rope wound around a hoisting machine is provided. The elevator apparatus according to claim 3, wherein the elevator apparatus is inserted. 6. The elevator apparatus according to claim 3, wherein a vibration isolating member is interposed between the support portion and the cross beam. 7. At least one support point of a support portion formed in an E-shape in plan view is mounted on a cross beam via a vibration isolating member having characteristics different from those of the other support points. Item 7. An elevator apparatus according to Item 6. 8. The upper surface of the counterweight is provided with two turning sheaves which are separated from each other in the left-right direction in the same vertical plane as the counterweight.
The elevator device according to any one of claims 1 to 7.