JP2000118912A - Elevator equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an elevator apparatus having advantages such as a reduction in weight burden on a building wall, an improvement in seismic resistance, comfort and mass productivity, and an increase in safety in maintenance work. A drive device (11) and a drive device (20) are arranged in a hoistway bottom (2A) within a range substantially coincident with a horizontal projection range of a car (7) in a hoistway (2). Is set at a position lower than the top 13A of the shock absorber 13, while the driving sheave 21 of the driving device 20 is set.
Is arranged so as to be orthogonal to the elevator direction of the car 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus and, more particularly, to an improvement in an arrangement of a driving device.

[0002]

2. Description of the Related Art Conventionally, when installed in an elevator apparatus, the existence of a hoistway and a machine room at the top thereof has been considered to be a factor that hinders the effective use of the building space, and also a weak point in terms of earthquake resistance. As a solution to this problem, recently, a machine room-free type has been proposed as disclosed in, for example, Japanese Patent Application Laid-Open No. 7-10434 (Japanese Patent No. 2593288).

[0003]

The above-mentioned prior art eliminates the need for a chimney-shaped machine room at the top of a building, and is effective in various aspects such as architectural landscape, architectural cost, and effective use of architectural space. Although it is a target, the load on the building wall (hoistway wall) is increased and the seismic resistance is deteriorated due to the drive device for driving the car being located on the top wall surface of the hoistway, and the drive device close to the car is caused. There were problems such as the transmission of driving noise into the car and the maintenance work required to maintain the functions of the drive. That is, there are problems in reinforcement of the building wall that suspends almost the entire load of the elevator, discomfort to the ears, and dangerous (high altitude) work.

An object of the present invention is to provide an elevator apparatus capable of eliminating a weight load on a building wall, improving seismic resistance, eliminating the influence of driving noise, and increasing safety in maintenance work.

Another object of the present invention is to provide an elevator apparatus capable of reducing the horizontal projected area of the hoistway and the bottom depth of the hoistway. It is another object of the present invention to provide an elevator apparatus that can increase the degree of freedom in changing (relocating) a place where a drive device is disposed, and at the same time, can improve the mass production of the drive device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a car ascending and descending along a car guide rail vertically provided on a building wall in a hoistway. A hanging weight that moves up and down along the guide rail for standing hanging weights, a pair of ropes that have a vertical portion between the riding cage and the hanging weights and that are hung endlessly, and driven by a motor. And a drive sheave that engages with one end of the rope, and a drive device fixed to the hoistway bottom immediately below the car, and a drive device fixed to the hoistway bottom and provided at the bottom of the car. An elevator apparatus comprising a shock absorber having a top vertically extending toward the elevator, wherein the driving device is disposed within a range substantially coincident with a horizontal projection range of the car at the bottom of the hoistway, Drive A deflecting pulley is arranged between the sheave and the engaging portion of the rope, and the vertical portion of the rope, and the height of the drive unit from the bottom of the hoistway is lower than the top of the shock absorber. It was placed in the range. The driving sheave of the driving device can rotate the car in a direction perpendicular to the elevating direction of the car to elevate the car, and the mechanical thickness parallel to the rotating direction of the driving sheave is the same as that of the building. It was flat and thin enough to fit in the horizontal gap between the wall and the car. Further, the bottom of the driving device is arranged at a position higher than the bottom of the hoistway.

According to the present invention, since the driving device for driving the car is located at the lowest floor of the hoistway and is arranged at a position substantially coincident with the horizontal projection range of the car,
There is no weight load due to the building walls, and the problem of earthquake resistance and the cost increase of building reinforcement are eliminated. In addition, since the driving device on which the entire load of the lifting structure acts is the building foundation and is fixed to the sturdy bottom of the hoistway, concerns about load resistance and earthquake resistance are eliminated. Furthermore, the machine thickness of the flat and thin drive device is set to a size that can be stored in the horizontal gap between the building wall and the car, and the common use for the hoistway bottom arrangement and the hoistway top arrangement is made common. As described later, in the event of an accident such as flooding, as described later, this drive device can be urgently relocated to the top of the hoistway, as in the conventional configuration. The advantage of mass production can be created.

In addition, the problem of driving noise is solved because the car and the driving device are arranged apart from each other, and even if a little noise is generated, the noise is generated from the feet that are far from the passenger's ear, so that comfort is increased. Don't worry about spoiling.

[0009] In addition, in the maintenance work affecting human life, in a hoistway bottom space where there is almost no height difference, a driving device equipped with a prime mover, a brake, and various safety devices and routinely positioned as a monitoring required device is provided. Since the visual inspection can be easily performed, it is convenient for the function maintenance work, and the position is in line with the safety work (non-altitude work).

[0010] As a whole, since the driving device does not exist within the horizontal interval at the top of the hoistway in a normal installation form, the horizontal projection area of the hoistway can be reduced, and the driving device is flat and thin. This contributes to reducing the bottom depth of the hoistway.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
First, a description will be given with reference to FIGS. FIG. 1 is a longitudinal sectional view conceptually showing the relationship between the elevator apparatus 1 and the hoistway 2 according to the present invention. FIG. 2 is a plan view of a cross section taken along line II of FIG. In the figure, an elevator device 1
Is a car 7 moving up and down along a guide rail 6 for a car vertically provided in the hoistway 2 between the middle floor 4 and the top floor 5 in the order from the lowest floor 3, A pair of ropes 9 having a vertical portion 9A and suspended endlessly and a pair of ropes 9 driven vertically by a rotation of a prime mover 10 between the hanging weights 8 ascending and descending along guide rails for counterweights (not shown). A drive device which is decelerated by the speed reducer 11A, is provided with a drive sheave 11B which is engaged with the rope 9 at an engagement portion 9B thereof, and is fixed to a hoistway bottom portion 2A directly below the car 7 by a support base 12. 11 and a shock absorber 13 for emergency use, which is also fixed to the bottom 2A of the hoistway, and has a top 13A vertically extending toward the bottom 7A of the car 7. The rope 9 is connected to the drive sheave 11
B, a turning roller 14 (two in FIG. 1) disposed between the horizontal and parallel engaging portion 9B and the vertical portion 9A to turn the direction of the rope 9; The turning roller 16 (two in FIG. 1) is paired with the support shaft 15 fixed to 2B, and is finally wound around the same support shaft 17 and the turning roller 18 by the rotational force of the drive sheave 11B. A lifting rotation system for lifting the weight 8 with the car 7 in suspension is constructed.

Further, in the height direction of the driving device 11, the height of the entire device is H1 with respect to the shaft bottom 2A.
Thus, the arrangement is such that the function of the shock absorber 13 is not impaired even if the car 7 is dropped in an emergency, as a position (H2> H1) lower than the height H2 of the top 13A of the shock absorber 13. The drive unit 11 is firmly fixed to the bottom 2A of the hoistway by an anchor bolt or the like (not shown in detail) by the support base 12 to reduce the total weight load of the hoisting structure such as the car 7 and the partial load of seismic motion. While it is a structure that can withstand,
Of the hoistway bottom 2A to protect against flooding.

On the other hand, the plane configuration of the present invention shown in FIG.
The main body of the driving device 11 is disposed within a range substantially coincident with the horizontal projection range (in the frame indicated by the imaginary line S in FIG. 2) immediately below the car 7 in the hoistway 2, and the rope 9 is connected to the car 7.
Is moved up and down along the building wall 2B in the hoistway 2 at a position outside the inside of the frame S by the support shaft 19 fixed to the building wall 2B and a pair of turning rollers 14 from the inside S of the frame. here,
The shock absorber 13 is located substantially at the center of the frame S, and a control panel for controlling the drive of the elevator device 1, a power receiving panel, and an electric system device T of various communication systems (shown by imaginary lines in FIG. 2) have room for the hoistway 2. It is appropriately arranged in a place where there is. The configuration in FIG. 1, in particular, the winding route of the rope 9, may take many forms other than the illustrated concept.

The structure of the present invention shown in FIGS. 1 and 2 is as follows.
The bottom depth of the hoistway 2 (the lowest floor 3 in FIG. 1 and the hoistway bottom 2A)
It is not intended to reduce the height difference significantly, and the configuration shown in FIGS. 3 and 4 is effective for reducing the height difference.

Next, a configuration different from those in FIGS. 1 and 2 will be described with reference to FIGS. FIG. 3 is an enlarged longitudinal sectional view showing a portion corresponding to the shaft bottom 2A of FIG. FIG.
FIG. 4 is a plan view of a cross section taken along line II-II of FIG. 3. In the drawing, a drive device 20 different from the above for the elevator device 1 of the present invention has a mechanical thickness H4 at which the drive sheave 21 rotates in a direction orthogonal to the elevating direction of the car 7 to raise and lower the car. Flat and thin, this machine thickness H
4, a motor (not shown), a brake (not shown), and other devices necessary for raising and lowering the suspension rotating system are incorporated.
A so-called gearless drive mechanism is provided. The driving device 20 is arranged such that the hoistway bottom 2A
The height of the entire device is H5 and the top 1 of the shock absorber 13
The arrangement is such that the function of the shock absorber 13 is not impaired even when the car 7 is dropped in an emergency as a position lower than the height H2 of 3A (H2> H5). In addition, the driving device 20
The support base 12 is fixedly mounted on the support base 12 with bolts (not shown) or the like. Further, the support base 12 is firmly fixed to the hoistway bottom 2A with anchor bolts (not shown) or the like, and the entire elevator structure such as the car 7 is provided. While it is configured to withstand heavy loads and unbalanced loads due to seismic motion, it is configured to be raised by the height H3 of the support base 12 to protect the hoistway bottom 2A from being flooded. The rope 9 wound around and engaged with the driving sheave 21 has a horizontal engaging portion 9A and a vertical portion 9A.
B, a turning roller 25 which is provided to turn the direction of the rope 9 and forms a pair with the support shaft 24 is provided. As in the configuration of FIGS. To give a rotational force. The turning roller 25 is firmly fixed to the bottom 2A of the hoistway with the anchor bolt 22 and the support 23.

Also in this case, the plane configuration of the driving device 20 is such that the driving device 20 is driven within a range substantially coincident with a horizontal projection range immediately below the car 7 in the hoistway 2 (in a frame indicated by an imaginary line S in FIG. 4). The main body of the device 20 is disposed, and the rope 9 and the car 7 connected to the rope 9 are separated from the frame S of the car 7 by the support shaft 24 fixed to the building wall 2B, the turning roller 25, and the like. It is a mechanism that moves up and down along the building wall 2B of the hoistway 2 at the outer position. Further, the shock absorber 13 is located substantially at the center of the frame S, and the electric system device T of the elevator device 1
(Indicated by imaginary lines in FIG. 4) are distributed in the hoistway 2.

Here, the setting of the mechanical thickness H4 parallel to the rotation direction of the drive sheave 21 of the drive device 20 will be described in detail. The important point is that the mechanical thickness H4 is set to a dimension that can be stored in the horizontal gap between the building wall 2B and the car 7 in FIG. 1 in the state shown by the imaginary line Y in FIG. Condition. In the case of a building in which the elevator device 1 is located near a river or in a place with a lot of groundwater, when a flood accident occurs at the bottom 2A of the hoistway that leaks unexpectedly over time, FIG. The flat and thin drive device 20 is moved to a position shown by an imaginary line Y in FIG. 1, for example, in the conventional example so that the car 7 can be moved on and off similarly to the conventional example. When the drive unit 20 is relocated as shown by the imaginary line Y, the problems of maintaining the strength of the building wall 2B (reinforcement required), earthquake resistance, noise, and maintainability which remain as described above remain. The installation form when the arrangement of the device 20 is changed (one is the bottom of the hoistway,
On the other hand, the degree of freedom of installation with respect to the hoistway top is increased. In the case of designing and manufacturing the drive device 20, if the location of the drive device 20 is limited from the beginning to the position of the conventional example (the imaginary line Y in FIG. 1) or to the shaft bottom 2A, dimensions and specifications that cannot be installed in both are common. In general, the mechanical thickness H4 is set at the position of the imaginary line Y based on the installation at the shaft bottom 2A as described in this section. , Each time the machine thickness H4
This has the effect of eliminating the deteriorating factor of the mass productivity of producing different products, and creating the merits of standardization and commonality. The advantages of setting the machine thickness H4 of the drive unit 20 to be flat and thin include the reduction of the construction cost due to the reduction of the height difference between the lowest floor 3 and the hoistway bottom 2A, minimization of the influence of groundwater, and maintenance work. In addition to having a considerable effect such as improvement in performance, it can also contribute to creation of a space for accommodating the control panel U (shown by imaginary lines in FIG. 3) above the control panel U.

[0018]

As described above, according to the present invention, the weight load on the building wall is reduced, the seismic resistance, the comfort and the productivity are improved, the safety of the maintenance work is increased, and the degree of freedom of the location of the drive unit is increased. For example, an elevator device having various advantages can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an elevator apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of a cross section taken along line II of FIG. 1;

FIG. 3 is a schematic longitudinal sectional view of an elevator apparatus according to another embodiment of the present invention.

FIG. 4 is a plan view of a cross section taken along line II-II of FIG. 3;

[Explanation of symbols]

1, 20: elevator device, 2: hoistway, 2A: hoistway bottom, 2B: building wall, 6: guide rail, 7: car, 8: hanging weight, 9A: vertical part, 9B: engaging part, DESCRIPTION OF REFERENCE NUMERALS 10: prime mover, 11, 20: drive unit, 11A: reducer, 11B, 21: drive sheave, 12: support base, 13
... buffer, 13A ... top, 14, 18, 25 ... turning roller, 15, 17, 24 ... spindle, H4 ... machine thickness.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F304 CA04 DA01 3F305 BA03 BB19 3F306 AA02 AA04 AA13 BB01 BB11 BB19 BC04 BC10

Claims (3)

[Claims] 1. A car ascending and descending along a guide rail for a car vertically provided on a building wall in a hoistway, and a car ascending and descending along a guide rail for a hanging weight also provided vertically. A pair of ropes having a vertical portion and being endlessly suspended between the hanging weight, the car and the hanging weight, and a drive sheave driven by a motor and engaged with one end of the rope. And a driving device fixed to the hoistway bottom immediately below the car, and a shock absorber fixed to the hoistway bottom and having a top vertically extending toward the bottom of the car. In the elevator apparatus, the driving device is disposed within a range substantially coincident with a horizontal projection range of the car at the bottom of the hoistway, and the driving sheave and the engagement portion of the rope, and the rope An elevator apparatus, wherein a deflecting pulley is arranged between vertical portions, and a height of the driving device from the bottom of the hoistway is arranged in a range lower than a top of the shock absorber. . 2. The elevator apparatus according to claim 1, wherein the drive sheave of the drive device rotates in a direction perpendicular to the direction of elevation of the car to raise and lower the car, and the drive sheave of the drive sheave An elevator apparatus characterized in that the machine thickness is parallel and flat and thin enough to be accommodated in a horizontal gap between the building wall and the car. 3. The elevator apparatus according to claim 1, wherein a bottom portion of said driving device is disposed at a position one step higher than a bottom portion of said hoistway.