JP2000351552A - Machine room-less elevator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a machine room-less elevator that can be applied to a specification having a large rated speed and a large rated load. SOLUTION: An electric motor 9 is installed protruding from a hoistway space or a side surface of the hoistway space, and a rope 4 for suspending a car 2 and a counterweight 3 is driven by a driving force of a sheave 71 driven by the electric motor. In a machine room-less elevator that raises and lowers the car 2 and the counterweight 3 via the intervening mechanism, the roping ratio on the car side is made smaller than the roping ratio on the counterweight side. As a result, the counterweight does not move in the hoistway, and an equivalent machine room space for installing the motor for driving the elevator can be created, and the installation space accompanying the increase in the capacity of the motor, safe inspection, maintenance, and adjustment Space necessary for the operation can be sufficiently secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine room-less elevator, and more particularly to a machine room-less elevator system for driving a car by an electric motor installed in a hoistway or a narrow machine space on a hoistway side. Machine-room-less elevator.

[0002]

2. Description of the Related Art In a conventional elevator system, a car and a counterweight are suspended by a rope in a hanging shape (1: 1 roping), and a sheave on which the rope is hung and an electric motor connected to the rope are mounted on a hoistway. It was installed in the machine room, which was allocated as a separate room at the top, together with the control panel that was the power source. On the other hand, in a model whose rated speed is slightly lower and the problem of noise increase is small even when a high-speed rotating motor is used, the car and the counterweight move by a half of the moving distance per rotation of the motor. One roping method was adopted.

On the other hand, the recent tendency of the elevator system is to control the shade, that is, in order to eliminate the rooftop machine room protruding from the top of the building, the space in which the car in the hoistway rises and lowers and the upper clearance space between the hoistway wall surface. Machine room-less elevators that have been devised, such as using the pits of the hoistway and hoisting machines as space for installing the hoisting machine, have been attracting attention.

[0004] Among the machine room-less elevators, in a system in which a motor is installed in a gap above the hoistway, the motor itself is arranged and mounted in an installation space where it is limited to make the motor itself extremely thin in the axial direction of the rotor. Indispensable for. Regarding a system for reducing the thickness of a motor body, an elevator system having a disk-shaped rotor has been proposed in Japanese Patent Application Laid-Open No. 7-10434.

In addition, a hoist is installed in a pit of a hoistway,
There is also a 2: 1 roping-type machine room-less elevator in which the driving of the car is underslung, a pulley is also provided on the counterweight, two turning pulleys are provided on the top of the hoistway, and two rope ends are fixed on the top. Proposed.

[0006]

However, the technology disclosed in the above-mentioned publication has a problem that the thinning of the motor is limited due to the increase in the rated speed and the load, and it is difficult to apply the thin motor to an elevator having a large capacity. There is.

[0007] Further, the above-mentioned 2: 1 roping type machine roomless elevator also requires an elevator having a high rated speed, that is, an elevator having a long hoistway length, inevitably having a very long overall rope length. The frequency decreases, causing interference with the elevator speed control system,
There is a problem that unpleasant vibration is likely to occur.

In view of the above problems, an object of the present invention is to provide a machine room-less elevator system in which a motor is installed in a hoistway, wherein the motor has a large capacity or a long hoistway length. Another object of the present invention is to provide a machine room-less elevator that can be adapted even if the elevator is not used.

[0009]

The present invention employs the following means in order to solve the above-mentioned problems.

An electric motor is installed in the hoistway space or protruding from a side surface of the hoistway space, and the driving force of the sheave driven by the motor drives the car and a rope via which the counterweight is suspended. And a machine room-less elevator that raises and lowers the counterweight, wherein the roping ratio on the car side is made smaller than the roping ratio on the counterweight side.

Further, in the machine room-less elevator according to the first aspect, the car-side roping ratio is 1: 1.
And the roping ratio on the counterweight side is 2: 1.

Also, in the machine room-less elevator according to any one of claims 1 and 2, the motor is installed at a position higher than a vertical center height of the hoistway. Features.

[0013] Further, in the machine room-less elevator according to any one of claims 1 to 3, the electric motor and the sheave are arranged in an upper extension space of a space in which the counterweight moves up and down. It is characterized by the following.

Further, in the machine room-less elevator according to any one of claims 1 to 4, the driving force applied to the rope by the electric motor may be such that the wrap angle of the sheave is 180 ° or more. Is generated by the application of

[0015] Further, in the machine room-less elevator according to any one of claims 1 to 4, the driving force applied to the rope by the electric motor is disposed close to the sheave and the sheave. It is generated by a combination with the turning deflection pulley.

Further, in the machine room-less elevator according to the present invention, a second electric motor for driving the deflecting pulley is connected and double-driven.

Further, in the machine room-less elevator according to claim 7, each of the double-driven motors is an induction motor.

Further, in the machine room-less elevator according to any one of claims 7 to 8, each of the double-driven motors is driven by one power converter. .

Further, in the machine room-less elevator according to any one of claims 1 to 9, the rotation shaft of the sheave is disposed substantially perpendicular to the hoistway wall surface. And

According to a tenth aspect of the present invention, in the elevator without a machine room, the sheave is disposed in the hoistway space, and the electric motor is disposed so as to protrude from a side surface of the hoistway space.

[0021] Further, in the machine room-less elevator according to any one of claims 10 to 11, the rotating shaft of the balancing weight-side turning pulley is disposed substantially perpendicular to the hoistway wall surface. It is characterized by the following.

Further, in the machine room-less elevator according to any one of claims 1 to 9, the rotation shaft of the sheave is disposed substantially parallel to a hoistway wall surface. And

According to a thirteenth aspect of the present invention, the rotating shaft of the counterbalance weight side turning pulley is disposed substantially perpendicular to the hoistway wall surface.

Further, in the machine room-less elevator according to any one of claims 1 to 14, the electric motor is of an everting type, and the sheave is overlapped with an electric motor rotor and provided on an outer periphery thereof. It is characterized by being arranged.

Further, in the machine room-less elevator according to any one of claims 1 to 15, the electric motor and the sheave are arranged on a check table.

According to a sixteenth aspect of the present invention, in the elevator without a machine room, the inspection platform has a fence preventing fence to a hoistway.

[0027] Further, in the machine room-less elevator according to any one of claims 16 to 17, the fixed end on the building side of the balancing weight rope is:
It is provided on the beam attached to the inspection table or the top of the hoistway.

[0028] In the machine room-less elevator according to claim 18, the fixed end of the counterweight rope on the building side is provided at a position accessible from the inspection table.

[0029] In the machine room-less elevator according to any one of claims 16 to 19, a control panel of the electric motor is disposed at a position operable from the inspection stand. .

[0030] Further, in the machine room-less elevator according to claim 20, the motor and the control panel are arranged so that their housings are connected to each other by a wide metal band.

Further, in the machine room-less elevator according to any one of claims 20 to 21, the electric motor and the control panel are connected and arranged on the same side with respect to the sheave. Features.

[0032] Further, in the machine room-less elevator according to any one of claims 16 to 22, the hoistway cross-sectional area of a space above the check table is a hoistway of a space below. It is characterized by being smaller than the cross-sectional area.

[0033]

First, a first embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b).

FIG. 1A is a plan view showing the entire configuration of the machine room-less elevator according to the present embodiment, and FIG.
Is a front view thereof.

In these figures, reference numeral 1 denotes a hoistway wall on which a car 2 and a counterweight 3 move up and down, 2 denotes a car, 3
Is a counterweight, 4 is a rope, 5, 6 is a turning pulley, 8
Is a beam provided at the top of the hoistway and supporting the diverting pulleys 5 and 6; 9 is an electric motor; 10 is a pulley provided on the counterweight 3; 11 is a rope fixed end to which one end of the rope 4 is fixed; 13 is a fence provided on the check table 12,
14 is a control panel, 15 is a metal strip, 71 is a sheave, and 72 is a turning pulley.

The beam 8 may be supported on the building side, or may be fastened to the uppermost part of a traveling guide rail (not shown) of the car 2 or the like so that the beam 8 does not interfere with the building.

As shown in these figures, a rope 4 is connected to the car 2 and a sheave 7
1. The turning pulley 72 is reached. Rope 4 is sheave 71
And the driving force of the electric motor 9 is transmitted to reach the pulley 10 of the counterweight 3 via the pulley 72, and the direction is changed.
To the rope fixed end 11. Here, the roping between the car 2 and the electric motor 9 is 1: 1 and the roping ratio between the electric motor 9 and the counterweight 3 is 2: 1. Since the former roping ratio is set to a lower value than the latter, the moving space length of the counterweight 3 is shorter in the vertical direction than the moving space length of the car 2.

According to the present embodiment, the moving distance of the counterweight 3 is 移動 of the moving distance of the car due to the difference in roping ratio, and a space in which the counterweight 3 does not move is created above the counterweight 3. It is possible to install a hoist such as the electric motor 9 and the sheave 71 in this non-moving space. This installation location can be arranged anywhere from almost the middle point of the hoistway to the upper part, and the layout of the building and the layout have a large degree of freedom.

In this embodiment, the rope 4 is sufficiently wound around the sheave 71 in order to secure the adhesion between the rope 4 and the sheave 71, and the turning pulley having a smaller diameter than the sheave 71. A lap method is adopted in which the rope 4 is routed to the counterweight 3 via 72. In this method, the turning pulley 72 does not apply a driving force merely for the turning purpose, so that the turning pulley 72 may have a small diameter, and there is no increase in the installation location in the radial direction. However, although there is a drawback to increase the vertical dimension of the sheave 71, since there is sufficient space above the hoistway, the wrap portion does not cause a problem in arrangement in the tower. Similarly, since the motor 9 has a sufficient installation space in the axial direction, the motor 9 can easily cope with an increase in the motor capacity due to an increase in the rated speed of the elevator and the loaded load. There is no need to use a general and inexpensive motor with good dimensional balance in the axial and radial directions. Furthermore, by attaching a second drive motor to the diverting pulley 72 and using a double drive, it is possible to cope with an elevator having a large loading load, and it is possible to standardize the motor model and reduce costs by mass production effects. In addition, the number of maintenance parts can be reduced. Regarding this double drive, if an induction motor is used as a drive motor instead of a synchronous motor, two motors can be collectively driven and controlled by one inverter as a power converter and one speed sensor. The control panel 14 can be downsized. In addition, since the inspection table 12 where the motor is installed can be installed at a position that does not interfere with the elevation of the car 2 or the counterweight 3, the fixed inspection table 12 that passes a firm beam into the hoistway can be installed. Fence 1 on the inspection table 12
The provision of 3 and the like enables the maintenance staff to safely check and adjust the elevator. As a result, a machine room space equivalent to the machine room for inspection and adjustment can be constructed in the hoistway.

When the rope fixing end 11 is provided below the inspection table 12, all of the load of the counterweight 3 must be received by the inspection table 12, but it must be long with 2: 1 roping. Since the total length of the rope can be shortened as much as possible, it is easy to avoid resonance with the speed control system (electric system) due to the decrease in the resonance frequency of the mechanical system, and there is also a control effect. This check table 1
When the fixed point of the rope 11 is mounted on the inspection table 12 at a position higher than the floor of the inspection table 12 so that the rope can be easily accessed from the inspection table 12, the rope trimming operation corresponding to the initial elongation of the rope is inspected. It can be performed safely on the table 12. Further, the control panel 14 serving as a drive source of the electric motor can be installed on the check table 12.
Since the motor 9 and the control panel 14 can be arranged on the same side, the control panel 14 can be accessed while visually observing the rotation state of the motor 9 and the moving state of the car 2, thereby enabling safe inspection and maintenance. Become.

Further, since the electric motor 9 and the control panel 14 can be installed close to each other, a solid earth for minimizing the electric inverter impedance by connecting the two housings to each other with a wide metal band 15 is also possible. It is possible to efficiently locate harmonic components that may be radiated into the air while power is supplied from the inverter to the motor by placing it close to other power supply lines between the inverter and the motor. It is also possible to suppress it beforehand.

Further, according to the present embodiment, even in a large-capacity elevator system, the hoisting machine and its power supply / control device can be installed with a degree of freedom in the space inside the hoistway, so that the capacity of the motor Regardless of the above, it is possible to realize a machine room-less elevator system capable of avoiding the restrictions of shading.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to (a) and (b).

FIG. 2A is a plan view showing the entire configuration of the machine room-less elevator according to the present embodiment, and FIG.
Is a front view thereof.

In these figures, reference numeral 21 denotes a rope fixed end to which one end of a rope provided on the beam 8 is fixed. The other configurations correspond to the configurations of the same reference numerals shown in FIGS. 1A and 1B, and thus the description is omitted. Here, since the drawing becomes complicated, the pulley 72 of the wrap portion is omitted and is represented by a sheave 71.

As shown in FIG. 2B, the present embodiment
The third embodiment differs from the first embodiment in that the rope fixing end 21 of the rope 4 on the counterweight 3 side is attached to the beam 8 at the top of the hoistway, not to the check table 12.

According to the present embodiment, although the length of the rope 4 becomes long and the vibration suppression control of the car 2 becomes difficult, one half of the load of the counterweight 3 can be received by the beam 8. Therefore, the strength of the check table 12 can be reduced. Further, the pulley 10 on the counterweight 3 side is travel-guided by a rail on the counterweight side (not shown) so as to move up and down substantially in parallel with the hoistway wall 1, so that the thickness of the counterweight 3 is It can be made thinner in the distance direction, and the sectional area of the hoistway can be further reduced.

Next, a third embodiment of the present invention will be described with reference to FIG.
(A) and (b) will be described with reference to FIG.

FIG. 3A is a plan view showing the entire configuration of the machine room-less elevator according to the present embodiment, and FIG.
Is a front view thereof.

In these figures, the configuration shown by each reference numeral corresponds to the configuration of the same reference numeral shown in FIGS.

As shown in these figures, the present embodiment
The second embodiment differs from the second embodiment in that the sheave 71 and the counterweight pulley 10 are arranged substantially parallel to the hoistway wall 1.

FIGS. 4, 5 and 6 respectively show three different sheaves 71 centering on roping in this embodiment.
FIG. 4 is a side view showing the arrangement of a pulley 72 for a counterweight.

In this embodiment, since the wrap angle is large, the circumference of the sheave 71 becomes complicated as shown in FIGS. 4, 5 and 6, and there is a surface which is difficult to arrange in the hoistway. Since there is a relatively large installation space, the diameter of the sheave 71 can be increased, and the life of the rope can be prolonged, so that maintenance costs associated with rope replacement can be reduced. Similarly, the drawback that the motor 9 becomes longer in the axial direction becomes apparent. However, if a thin motor is used in the axial direction or a drive motor is also connected to the pulley 72 for the counterweight to form a double drive, then one motor may be used. The thickness per unit can be reduced. Further, as shown in FIG. 3 (a), if the structure is such that only the motor 9 protrudes laterally from the hoistway by a width W, this protruding motor space becomes a drawback, but the lifting and lowering excluding the protruding portion is omitted. This produces an effect of reducing the road cross-sectional area. Note that the system can be constructed in principle even if this protruding portion is installed at any position in the upper half of the hoistway, so the presence of the protruding portion does not cause a fatal injury. In this case, if the pulley 10 on the counterweight 3 side is also arranged substantially parallel to the hoistway wall surface 1, the effect of reducing the hoistway cross-sectional area becomes significant.

In the present embodiment, the sheave 7 shown in FIG.
1 and the arrangement of the counterweight pulley 72 increase the bending of the rope 4, but the sheave 71 and the counterweight pulley 72
Can be taken equally, which is effective for double driving. Further, in the arrangement of the sheave 71 and the counterweight pulley 72 shown in FIG. 5, the rope 4 is less bent, which is advantageous in terms of the life of the rope. Also, the sheave 71 shown in FIG.
With the arrangement of the counterweight pulley 72, the wrap angle is small, but the same lap angle makes it suitable for double drive, and the sheave 71 and the counterweight pulley 72 can be attached to one beam. Becomes

Next, a fourth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to (a) and (b).

FIG. 7A is a plan view showing the entire configuration of the machine room-less elevator according to the present embodiment, and FIG.
Is a front view thereof.

In these figures, the configuration shown by each reference numeral corresponds to the configuration of the same reference numeral shown in FIGS. In this case, too, since the drawing becomes complicated, the pulley 72 of the wrap portion is omitted and is represented by a sheave 71.

As shown in these figures, the present embodiment
The sheave 71 and the counterweight pulley 10 are arranged substantially parallel to the hoistway wall surface, and the sheave 71 and the electric motor 9 overlap each other. That is, the electric motor 9 is called an abduction type, and the inside is fixed to the check table 12 as a stator, the outer peripheral surface is a rotor, and the outer peripheral surface is rotated by the sheave 71. This is different from the third embodiment in the point.

According to this embodiment, the dimension of the motor 9 in the axial direction can be reduced, and in particular, the width W in the figure can be reduced without providing a protrusion on the hoistway side surface 1, and a small amount of lifting / lowering can be achieved. Road cross-sectional area can be realized.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to (a) and (b).

FIG. 8A is a plan view showing the entire configuration of the machine room-less elevator according to the present embodiment, and FIG.
Is a front view thereof.

In these figures, reference numeral 16 denotes an upper portion of the check table 12 on which the sheave 71 and the electric motor 9 are installed. The other configurations correspond to the configurations of the same reference numerals shown in FIGS. 1A and 1B, and thus the description is omitted. In this case, too, since the drawing becomes complicated, the pulley 72 of the wrap portion is omitted and is represented by a sheave 71.

As shown in these figures, the present embodiment
The hoistway cross-sectional area of the upper space is set smaller than the hoistway cross-sectional area of the lower space than the inspection platform 12 on which the sheave 71 and the electric motor 9 are installed, which is different from the first embodiment. .

According to the present embodiment, since the roping of the counterweight 3 is set to be larger than that of the car 2, the ascent and descent of the counterweight 3 is shorter than the ascent and descent of the car 2. Except for the space to secure the height to work safely on the check table 12,
It becomes possible to narrow down the hoistway cross-sectional area of the inspection table upper part 16 from the hoistway cross-sectional area of the lower part. As a result, of the hoistway cross-sectional area given to the elevators in the building, the floor area higher than the center of the building can reduce the area required for raising and lowering the counterweight 3, thereby increasing the effective floor area in the building. There is an effect that it can be performed.

As described above, according to each of the above-described embodiments of the present invention, in a machine room-less elevator system in which a motor is disposed in a hoistway, as the rated speed, the rated loading load, and the length of the hoistway increase, However, even in an elevator system having a large capacity, the motor can be arranged in the hoistway without arranging a machine room or a mini machine room separate from the hoistway.

Further, according to each of the above-described embodiments, maintenance, inspection, and adjustment of the elevator can be performed in an equivalent machine room inside the elevator with a firm foothold, so that the safety of workers is ensured. be able to.

Further, according to each of the above-described embodiments, since the operation while watching the movement of the elevator such as the rescue operation can be performed from the machine room inside the elevator, the safety of the passengers can be ensured.

Further, according to each of the above embodiments, the sectional area of the hoistway above the check table can be set smaller than that of the lower part, so that the effective total floor area that can be used in the building can be increased.

[0069]

As described above, according to the present invention, in a machine room-less elevator system in which an electric motor is installed in a hoistway, a counterweight does not move in the hoistway and an electric motor for driving the elevator is installed. A possible equivalent machine room space can be obtained, and a sufficient installation space for a large-capacity motor and a space required for safe inspection, maintenance, and adjustment can be sufficiently secured.

[Brief description of the drawings]

FIG. 1 is a plan view and a front view showing an entire configuration of a machine room-less elevator according to a first embodiment of the present invention.

FIGS. 2A and 2B are a plan view and a front view showing an entire configuration of a machine room-less elevator according to a second embodiment of the present invention.

FIGS. 3A and 3B are a plan view and a front view showing an entire configuration of a machine room-less elevator according to a third embodiment of the present invention.

FIG. 4 is a side view showing an example of an arrangement of three different sheaves 71 and a counterweight pulley 72 centered on roping according to a third embodiment of the present invention.

FIG. 5 is a side view showing an example of an arrangement of three different sheaves 71 and a counterweight pulley 72 centered on roping according to a third embodiment of the present invention.

FIG. 6 is a side view showing an example of an arrangement of three different sheaves 71 and a counterweight pulley 72 centered on roping according to a third embodiment of the present invention.

FIG. 7 is a plan view and a front view showing the entire configuration of a machine room-less elevator according to a fourth embodiment of the present invention.

FIG. 8 is a plan view and a front view showing the entire configuration of a machine room-less elevator according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway wall 2 Riding car 3 Counterweight 4 Rope 5, 6, 72 Turning pulley 10 Pulley 11 and 21 Rope fixed end 12 Inspection stand 13 Safety fence 14 Control panel 15 Metal strip 16 Upper part of inspection stand 71

Continued on the front page (72) Inventor Hideki Nihei 1070 Ma, Hitachinaka City, Ibaraki Prefecture Inside the Mito Plant of Hitachi, Ltd. (72) Inventor Takeshi Ogawa 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi, Ltd. (72) Inventor ▲ Toshifumi Yoshikawa 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi, Ltd.Hitachi Research Laboratory, Ltd. (72) Inventor Akihiro Omiya 502, Kandate-cho, Tsuchiura-shi, Ibaraki F-term (in reference) 3F305 BA02 BB19

Claims (23)

[Claims] An electric motor is installed in a hoistway space or protruding from a side surface of the hoistway space, and the driving force of the sheave driven by the motor drives the car and a counterweight via a rope that suspends the counterweight. A machine room-less elevator for raising and lowering a car and a counterweight, wherein the roping ratio on the car side is smaller than the roping ratio on the counterweight side. 2. The machine room-less elevator according to claim 1, wherein a roping ratio on the car side is 1: 1 and a roping ratio on the counterweight side is 2: 1. 3. The method according to claim 1, wherein
The elevator according to any one of the preceding claims, wherein the electric motor is installed at a position equal to or higher than a vertical center height of the hoistway. 4. The method according to claim 1, wherein
The elevator according to any one of claims 1 to 3, wherein the electric motor and the sheave are arranged in an upper extension space of a space in which the counterweight moves up and down. 5. The method according to claim 1, wherein
The elevator according to any one of claims 1 to 3, wherein the driving force applied to the rope by the electric motor is generated by applying a wrap angle of 180 ° or more in the sheave. 6. The method according to claim 1, wherein
The elevator according to any one of claims 1 to 3, wherein the driving force applied to the rope by the electric motor is generated by a combination of the sheave and a turning pulley disposed close to the sheave. 7. The machine room-less elevator according to claim 6, wherein a second electric motor for driving the diverting pulley is connected and is double-driven. 8. The elevator according to claim 7, wherein each of the double-driven motors is an induction motor. 9. The method according to claim 7, wherein
The elevator according to any one of claims 1 to 3, wherein each of the double-driven electric motors is driven by one electric power converter. 10. The machine room-less elevator according to claim 1, wherein the rotation shaft of the sheave is disposed substantially perpendicular to a hoistway wall surface. 11. The machine room-less elevator according to claim 10, wherein the sheave is disposed in the hoistway space, and the electric motor is disposed so as to protrude from a side surface of the hoistway space. 12. The machine room according to claim 10, wherein a rotating shaft of the counterbalance weight-side turning pulley is disposed substantially perpendicular to a hoistway wall surface. Less elevator. 13. The machine room-less elevator according to claim 1, wherein the rotation shaft of the sheave is disposed substantially parallel to a hoistway wall surface. 14. The machine room-less elevator according to claim 13, wherein a rotating shaft of the counterbalance weight-side turning pulley is disposed substantially perpendicular to a hoistway wall surface. 15. The electric motor according to claim 1, wherein the electric motor is of an everting type, and the sheave is arranged on the outer periphery of the electric motor so as to overlap with the electric motor rotor. Machine room-less elevator. 16. The machine room-less elevator according to claim 1, wherein the electric motor and the sheave are arranged on a check table. 17. The machine room-less elevator according to claim 16, wherein the inspection platform has a fence preventing fence to a hoistway. 18. The fixed end of the counterweight rope on the building side according to any one of claims 16 to 17, wherein the fixed end on the building side is provided on the inspection table or a beam attached to the top of the hoistway. An elevator without a machine room, characterized in that: 19. The machine room-less elevator according to claim 18, wherein the fixed end of the counterweight rope on the building side is provided at a position accessible from the inspection stand. 20. The elevator according to any one of claims 16 to 19, wherein a control panel of the electric motor is arranged at a position operable from the check table. 21. The machine room-less elevator according to claim 20, wherein the motor and the control panel have their housings connected to each other by a wide metal band. 22. The elevator according to claim 20, wherein the electric motor and the control panel are connected and arranged on the same side with respect to the sheave. . 23. The method according to claim 16, wherein a cross section of a hoistway in a space above the inspection table is smaller than a cross section of a hoistway in a space below the inspection table. A machine room-less elevator.