WO2006101154A1

WO2006101154A1 - Machine room-less elevator

Info

Publication number: WO2006101154A1
Application number: PCT/JP2006/305795
Authority: WO
Inventors: Kazuhiro Izumi; Hiroshi Sano
Original assignee: Toshiba Elevator Kabushiki Kaisha
Priority date: 2005-03-23
Filing date: 2006-03-23
Publication date: 2006-09-28
Also published as: CN101146733A; JP2006264862A

Abstract

A machine room-less elevator where the overall length of a lifting rope can be reduced and the lifting rope can be easily installed, and where loads applied to guide rails by a hoist and deflection sheaves can be decreased to reduce the size of the guide rails. To achieve this, a traction sheave (20), lower deflection sheaves (22, 23), and an upper deflections sheave (24) are all arranged at positions higher than the floor surface of the highest floor. Support members (36, 37, 38) are fixed to the upper ends of a car side guide rail and a weight side guide rail. A foundation (30) is placed on upper surfaces of the support members and a support frame (50) is connected to the lower surfaces of the support members.

Description

Specification

Machine / Lameless elevator

Technical field

[0001] The present invention relates to a machine room-less elevator that does not have a machine room above a hoistway. More specifically, the overall length of the hoisting rope can be shortened, and the hoisting rope can be easily installed. Furthermore, the present invention relates to a machine roomless elevator that has been improved so that the size of the guide rail can be reduced by reducing the load exerted on the guide rail by the hoisting machine and the deflecting sheave.

Background art

[0002] Conventionally, in order to efficiently use the space in a building and avoid problems such as the right to sunshine, various V, so-called machine roomless elevators have been developed and proposed that do not have a machine room above the hoistway. Among them, a machine roomless elevator having the structure shown in FIG. 6 has been proposed (see Patent Document 1 below).

[0003] This machine roomless elevator includes a car 1 that is guided by a pair of left and right car-side guide rails 1L and 1R and moves up and down in a hoistway S, and a pair of left and right cars that are disposed behind the car 1. And a counterweight 2 which is guided by weight-side guide rails 2L and 2R and moves up and down in the hoistway S.

A lifting machine support beam 3 spanned between the left car-side guide rail 1L and the left weight-side guide rail 2L has a lifting machine for rotationally driving the traction sheave 4. 5 is supported.

Further, it is stretched between the left car-side guide rail 1L and the pair of left and right weight-side guide rails 2L, 2R, and the sled sheave support beam 6 has an upper deflected sheave 7a and a lower deflected sheave 7b. Each is supported rotatably.

[0004] And, one side of the hoisting rope 8 that suspends the car 1 and the counterweight 2 in the shape of a fishing bottle, one side is wound from the trough sheave 4 to the lower deflecting sheave 7b and the car lower sheave la, lb. The car 1 is suspended and its end is locked to the front hitch 9f. The other side of the rope 8 is deflected upward from the trough sheave 4 and the sheave 7a, weight. While being wound around the side sheave 2a and suspending the counterweight 2, its end is locked to the rear hitch 9r.

Patent Document 1: Japanese Patent Application Laid-Open No. 2003-137487

Disclosure of the invention

Problems to be solved by the invention

[0006] By the way, in the conventional machine roomless elevator shown in FIG. 6, the traction sheave 4 is arranged at the bottom of the hoistway S, and the deflecting sheaves 7a and 7b are arranged at the top of the hoistway S. .

As a result, the total length of the hoisting rope 8 reaches four times the lifting / lowering stroke of the car 1, which increases the manufacturing cost of the entire elevator.

In addition, the work for installing the hoisting rope 8 must be performed at both the bottom and top of the hoistway S, which requires time and effort.

Furthermore, in the conventional machine roomless elevator shown in FIG. 6, the lifting machine support beam 3 is fixed to the bottom of the guide rails 1L, 2L, and is deflected to the upper ends of the guide rails 1L, 2L, 2R. Support beam 6 is fixed.

As a result, the hoisting rope 8 draws the hoisting machine support beam 3 and the deflecting sheave support beam 6, and a large bending moment and a compressive force in the buckling direction act on the guide rails 1L and 2L.

Therefore, in order to withstand such bending moments and compressive forces in the buckling direction, the rail size of the guide rails 1L and 1R must be increased, but all the guide rails are symmetrical. The guide rails 1L, 1R, 2L, and 2R must be increased in rail size, greatly increasing the manufacturing cost of the entire elevator.

[0008] Therefore, a first object of the present invention is to solve the above-mentioned problems of the prior art, reduce the overall length of the hoisting rope, and facilitate the installation work of the hoisting rope. It is to provide a less elevator.

[0009] In addition, a second object of the present invention is to reduce the size of the guide rail by reducing the bending moment and the compressive force in the buckling direction exerted on the guide rail by the hoisting machine and the deflecting sheave. It is to provide a machine room-less elevator that can be used. Means for solving the problem

[0010] The machine room-less elevator according to the first aspect of the present invention that solves the above problems includes a car that is guided by a car-side guide rail and moves up and down in a hoistway.

A counterweight that moves up and down along the rear wall of the hoistway while being guided by a weight-side guide rail at the rear of the car;

A traction sheave disposed at the top of the hoistway;

A drive device disposed at the top of the hoistway for rotationally driving the traction sheave;

The lower rope disposed below the truss sheave that guides one of the portions extending downward from the truss sheave to the counterweight side of the upper rope that suspends the car and the counterweight. With the side deflector sheave,

An upper deflecting sheave disposed above the counterweight, wherein a portion extending upward from the lower deflector sheave of the upper rope guides the counterweight so as to extend downward; Is provided.

The trough sheave, the lower deflector sheave, and the upper deflector sheave are arranged at a position higher than the floor surface of the highest floor among the floors on which the car is to land. As

[0011] That is, in the machine roomless elevator according to the first aspect, the traction sheave, the lower deflecting sheave, and the upper deflecting sheave are all arranged at a position higher than the floor surface of the highest floor. .

The ceiling of the hoistway of the machine roomless elevator is almost the same height as the ceiling of the highest floor.

This allows the traction sheave, the lower deflector sheave and the upper deflector sheave to all be arranged in a vertical range of about 1.5 to 2 meters at the top of the hoistway.

Therefore, it is possible to fit the total length of the rope on the roof approximately 2.5 to 3 times the lifting / lowering stroke of the car.

In addition, the installation work of the hoisting rope is performed intensively and easily at the top of the hoistway. be able to.

[0012] The machine room-less elevator according to the second aspect is

A pedestal for supporting the traction sheave, the drive device and the upper deflector sheave;

A support frame for supporting the lower deflecting sheave below the traction sheave; and a support frame and the support frame fixed to upper ends of the car side guide rail and the weight side guide rail. And a support member.

The mount and the support frame are attached to the support member so as to sandwich the support member in the vertical direction.

[0013] That is, in the machine roomless elevator of the second aspect, the pulling force acting on the upper deflecting sheave and traction sheave from the hoisting rope and the hoisting rope force acting on the lower deflecting sheave The force pulling up the support frame opposes and cancels each other through the support member.

Therefore, the force to pull down the frame and the force to lift the support frame do not apply a large bending moment or compressive force in the buckling direction to the car-side guide weight and the weight-side guide rail. Can be minimized.

[0014] In the machine room-less elevator according to the third aspect, the support frame extends in the vertical direction along the car-side guide rail or the weight-side guide rail, and the upper end thereof is the support member. And a horizontal member extending horizontally between the lower ends of the vertical members and supporting the lower deflecting sheave.

And a pair of said vertical member is connected to the said cage side guide rail and the said weight side guide rail in the lower end part and the center part of the up-down direction, respectively.

[0015] Thereby, since the car side guide rail and the weight side guide rail can be reinforced by using a pair of vertical members, the weight of the driving device, the upper lobe force, and the force acting on the gantry and the support frame, respectively. It is possible to reduce the sag and deformation of the car side guide rail and the weight side guide rail. [0016] Further, in the machine room-less elevator according to the fourth aspect, the first vibration isolating means is interposed between the gantry and the support member, and the machine room-less elevator according to the fifth aspect is supported. Second vibration isolating means is interposed between a pair of vertical members and horizontal members constituting the frame.

As a result, when the car or counterweight is raised or lowered, vibrations generated in the drive unit, upper deflector sheave and lower deflector sheave are caused by the side walls and rear of the hoistway through the car-side guide rail and the weight-side guide rail. It can be prevented from being transmitted to the wall.

The anti-vibration means can be made of anti-vibration rubber as in the machine roomless elevator of the sixth aspect, or can be made of a vibration-damping steel plate like the machine roomless elevator of the seventh aspect. Other anti-vibration means can also be employed. For example, a gantry, a support frame, and a support member can be manufactured with a damping steel plate.

The invention's effect

[0017] According to the present invention, the total length of the hoisting rope can be shortened, the hoisting rope can be easily installed, and further, the load exerted on the guide rail by the hoisting machine and the deflecting sheave is reduced. Therefore, it is possible to provide an improved machine roomless elevator so that the size of the guide rail can be reduced.

Brief Description of Drawings

[0018] FIG. 1 is a perspective view of a right front force of a machine room-less elevator according to an embodiment of the present invention.

2 is an enlarged perspective view showing the main part of FIG.

FIG. 3 is a perspective view of the machine roomless elevator shown in FIG.

4 is an enlarged perspective view showing the main part of FIG.

FIG. 5 is a plan view of the machine roomless elevator shown in FIG.

FIG. 6 is a perspective view showing a conventional machine roomless elevator.

Explanation of symbols

[0019] S hoistway

1 car

2 counterweight

3 Lifting machine support beam Traction Sheave

Drive device

Bend sheave support beam a Upper baffle sheave b Lower baffle sheave

Hoisting rope

f, 9r hitch

Car

R, 11L Car side guide rail R, 12L Door

Upper beam

R, 14L longitudinal beam

Sheave support beam

R, 16L Sheave on basket

Counterweight

a, 17b Weight side sheave

L, 18R Minor guide rail Traction sheave

Drive device

, 23 Lower deflector sheave Upper deflector sheave

Base (support beam)

Right support beam

Rear support beam

Oblique support beam

, 37, 38 Support member

, 42, 43 Anti-vibration rubber (anti-vibration means) Support frame 51, 52 Longitudinal member

53 Horizontal members

54, 55 Anti-vibration rubber

BEST MODE FOR CARRYING OUT THE INVENTION

[0020] Hereinafter, an embodiment of a machine roomless elevator according to the present invention will be described in detail with reference to FIGS.

In the following explanation, the direction in which the car door opens and closes is the left-right direction, the direction in which the passenger leaves the car is the front, the direction in which the passenger enters the car is the rear, and the lead straight direction is up and down. Say direction.

[0021] The car 10 of the machine roomless elevator according to the present embodiment shown in FIGS. 1 to 5 moves up and down in the hoistway S provided in the building while being guided by a pair of left and right car side guide rails 11L and 11R. To do.

A pair of left and right doors 12L, 12R provided on the front surface of the car 10 open and close in the left-right direction.

The car frame that supports the car 10 is connected to the upper beam 13 that extends horizontally in the left-right direction above the car 10 and to the bottom of the car 10 while being connected to the left and right ends of the upper beam 13 and hanging down. And a pair of left and right vertical beams 14L, 14R.

[0022] In the vertical gap between the car 10 and the upper beam 13, as shown in Fig. 5, when viewed from the vertical direction, an X-shape is formed with respect to the upper beam 13. A sheave support beam 15 extending obliquely in the front-rear and left-right directions in the horizontal plane is arranged so that the upper surface force of the car 10 is also separated upward.

The sheave support beam 15 is connected to the upper beam 13 such that the upper surface of the central portion in the longitudinal direction is in close contact with the lower surface of the central portion in the longitudinal direction of the upper beam 13.

The direction in which the sheave support beam 15 extends is determined so that the rotation axis of the car sheaves 16L and 16R, which will be described later, and the rotation axis of the traction sheave 20 form an angle Θ within a predetermined range.

[0023] A pair of left and right upper car sheaves 16L and 16R for suspending the car 10 are rotatably supported at both left and right ends of the sheave support beam 15, respectively. Thus, the upward force acting on the pair of left and right car upper sheaves 16L and 16R to suspend the car 10 is transmitted from the sheave support beam 15 to the upper beam 13 and the pair of left and right vertical beams 14L and 14R. It is transmitted to the bottom of the car 10.

[0024] The pair of left and right car sheaves 16L, 16R are symmetrically disposed in the front-rear and left-right directions with respect to the center of gravity G of the car 10.

In other words, the part 8b that extends horizontally between the pair of left and right car sheaves 16L, 16R of the upper rope 8 so that it passes above the center of gravity G of the car 10 when viewed from above in the vertical direction. A pair of left and right car sheaves 16L, 16R are disposed.

Further, a pair of left and right car side guide rails 11L and 11R are arranged symmetrically in the left and right direction with respect to the center of gravity G of the car 10.

As a result, the car 10 can be stably suspended without being inclined.

As shown in FIG. 5, the counterweight 17 in the machine room-less elevator of the present embodiment is the hoistway S in the space between the rear surface 10r of the car 10 and the rear wall Sr of the hoistway S. In the portion near the right wall SR of the right wall SR, it is arranged so as to move up and down while being guided by a pair of left and right weight side guide rails 18L, 18R.

A pair of left and right weight-side sheaves 17a and 17b are supported on the upper portion of the counterweight 17 so as to be rotatable about a rotation axis extending in the front-rear direction.

[0026] Further, a control panel CP for controlling the operation of the drive device 21 described later is a space between the rear surface 1 Or of the car 10 and the rear wall Sr of the hoistway S, and the left wall SL of the hoistway S. It is arranged close to.

The control panel CP is connected to and supported by the left weight side guide rail 18L by a plurality of brackets B.

[0027] As shown in FIGS. 1 and 5, a traction sheave 20 is disposed on the top of the hoistway S near the right wall SR and at a substantially central position in the front-rear direction of the right wall SR. Yes.

The rotational axis of the traction sheave 20 extends horizontally toward the rear wall Sr of the right wall SR force while tilting at an angle a with respect to the right wall SR when viewed in the vertical upward direction.

A drive device 21 for rotationally driving the traction sheave 20 is disposed behind the traction sheave 20 and coaxially with the traction sheave 20. This drive unit 21 is mounted on a horizontally extending frame 30 between the upper ends of the pair of left and right weight side guide rails 18L and 18R and the upper end of the right car side guide rail 11R and is firmly mounted. It is fixed to.

As shown in FIGS. 4 and 5, the gantry 30 has three support beams 31, 32, 33 and a connection plate 34.

The right support beam 31 that extends horizontally in the front-rear direction near the right wall SR of the hoistway S across the upper ends of the right car-side guide rail 11R and the right weight-side guide rail 18R has a cross-sectional shape. It is made from U-shaped steel.

The rear support beam 32 that extends horizontally in the left-right direction near the rear wall Sr of the hoistway S between the upper ends of the pair of left and right weight-side guide rails 18L and 18R is manufactured from a section steel with a cross-sectionally inverted concave shape. Has been.

In addition, the oblique support beam 33 extending obliquely back and forth and left and right so as to overlap the rotation axis of the trough sheave 20 when viewed from above in the vertical direction is manufactured from a section steel having an inverted concave shape, Both end portions are placed on the support beams 31 and 32 and are firmly fixed.

The lower surfaces of the rear end of the right support beam 31 and the right end of the rear support beam 32 are firmly connected by a connection plate 34 that extends horizontally.

[0030] The gantry 30 has a structure in which the support beams 31, 32, 33 and the connection plate 34 are connected to each other by bolts and nuts and integrated together, and the top part of the hoistway S of each member when the elevator is installed. Easy to transport and assemble.

Furthermore, each of the support beams 31, 32, and 33 is made of steel having an open bottom or side surface, which makes assembly work using bolts and nuts easier.

As shown in FIG. 4, the gantry 30 is fixed near the upper end of the right car-side guide rail 11R, and is fixed near the upper end of the first support member 36 and the right weight-side guide rail 18R. The second support member 37 and the third support member 38 fixed in the vicinity of the upper end of the left weight side guide rail 18L are horizontally supported.

These support members 36, 37, 38 are made of, for example, a combination of thick steel plates or steel shapes. It can be manufactured, or can be manufactured using a damping steel plate.

In addition, a first anti-vibration rubber 41 as an anti-vibration means is provided between the front end of the right support beam 31 and the first support member 36, and the right end of the rear support beam 32 and the connection plate 34 and the second support member The second anti-vibration rubber 42 is interposed between the left end of the rear support beam 32 and the third support member 38. The transmission of vibration to each guide rail is cut off.

[0033] On the other hand, as shown in FIGS. 2 and 4, a pair of front and rear lower deflectors that are respectively rotatable around a rotation axis extending horizontally in the left-right direction are provided below the right support beam 31 in the vertical direction. Tubes 23 and 23 are provided.

The support frame 50 that rotatably supports the pair of front and rear lower deflecting sheaves 22 and 23 is connected and fixed to the lower surfaces of the first support member 36 and the second support member 37.

As shown in FIGS. 2 and 4, the support frame 50 is connected to the lower surface of the first support member 36 and extends downward in the vertical direction, and the lower surface of the second support member 37. It has a second vertical member 52 that is connected and extends vertically downward, and a horizontal member 53 that extends horizontally in the front-rear direction between the lower ends of these vertical members 51 and 52.

These members 51, 52 and 53 are manufactured with high rigidity steel. Further, a fourth anti-vibration rubber 54 is provided between the upper surface of the front end of the horizontal member 53 and the lower surface of the first vertical member 51, and a second vibration isolator 54 is provided between the upper surface of the rear end of the horizontal member 53 and the lower surface of the second vertical member 52. 5 Anti-vibration rubbers 55 are interposed in the vertical direction, respectively, to block transmission of vibration from the horizontal member 53 to the vertical members 51, 52.

Further, the pair of front and rear lower deflecting sheaves 22 and 23 are rotatably supported above the horizontal member 53 by a bracket 56 fixed to the horizontal member 53.

On the other hand, as shown in FIG. 4, an upper deflecting sheave 24 that is rotatable around a rotation axis that extends horizontally in the front-rear direction is formed on the upper surface of the right end of the rear support beam 32 that constitutes the gantry 30. It is firmly fixed by bracket 24a.

A through hole extending in the vertical direction in the vicinity of the right end of the rear support beam 32 so as to pass through the portions 8f and 8g of the upper rope 8 wound around the upper deflecting sheave 24 and extending downward. 32a is penetrated, and through holes 34a, 37a extending in the vertical direction are also penetrated in the connection plate 34 and the second support member 37.

[0036] Further, as shown in FIG. 2, on the upper surface of the left end of the rear support beam 32 of the gantry 30, there is a lifting rope.

A rear hitch portion 9r for locking one end of 8 is provided.

Further, a front hitch portion 9f for locking the other end of the upper rope 8 is supported by a bracket 9a in the vicinity of the upper end of the left car guide rail 11L.

[0037] The tractive sheave 20 is wound with, for example, a heel rope 8 comprising 10 ropes having an outer diameter of 5 mm arranged in parallel.

One end side of this rope 8 is a portion 8a that hangs from the trough sheave 20 through the vicinity of the front end of the right support beam 31 toward the right car upper sheave 16R, and a pair of left and right upper car sheaves 16L, 16R. Between the left car upper sheave 16L and a part 8c whose tip is fixed to the front hitch part 9f.

1 Suspend with roving.

[0038] At this time, as shown in FIG. 5, when viewed from above in the vertical direction, the pair of left and right car sheaves 16R and 16L are symmetrically arranged in the front, rear, left and right with respect to the center of gravity G of the car 10. In addition, a pair of left and right car-side guide rails 11L and 11R are arranged symmetrically with respect to the center of gravity G of the car 10.

As a result, the gravity acting on the car 10 and the force to lift the car 10 upward do not greatly offset in the horizontal direction.

Therefore, the car 10 can be stably suspended without being inclined, and the car 10 can be lifted and lowered smoothly without vibrating.

[0039] As shown in FIG. 4, the other end of the upper rope 8 has a portion 8d that hangs down from the traction sheave 20 toward the front lower deflection sheave 22, and a pair of front and lower lower deflection sheaves 22. , 23 extending horizontally between the lower deflection sheave sheave 23 and the upper deflection sheave 24 toward the upper deflection sheave 24 8f, and the right weight side after being wound around the upper deflection sheave 24 A portion 8g that hangs down toward the sheave 17a, a portion 8h that extends horizontally between the pair of left and right weight-side sheaves 17a, 17b, and a tip that extends upward from the left-side weight-side sheave 17b It consists of the part 8i fixed to the hitch part 9r, and the counterweight 17 is 2: 1 low pin It is suspended by the group.

[0040] At this time, the trough sheave 20, the pair of front and rear lower sheave sheaves 22, 23, and the upper deflector sheave 24 are all powered. From the floor of the highest floor among the floors on which the passenger car 10 is landed. It is also arranged at a high position.

The ceiling of the hoistway S of this machine roomless elevator is almost the same height as the ceiling of the highest floor.

As a result, the trough sheave 20, the lower deflector sheaves 22, 23, and the upper deflector sheave 24 can all be arranged in a vertical range of about 1.5 to 2 meters at the top of the hoistway S. it can.

Therefore, the total length of the rope 8 can be reduced to about 2.5 to 3 times the lifting / lowering stroke of the car 10.

Furthermore, the installation work of the hoisting rope 8 can be performed intensively and easily at the top of the hoistway S.

On the other hand, when the driving device 21 is operated to raise and lower the car 10 and the counterweight 17, vibration is generated in the driving device 21.

While this force is applied, the gantry 30 on which the driving device 21 is placed and firmly fixed is supported on each support member 36, 37, 38 by vibration proof rubber 4 1, 42, 43. .

Thus, vibration generated in the drive device 21 is not transmitted to the right wall SR and the rear wall Sr of the hoistway S via the right car-side guide rail 11R and the pair of left and right weight-side guide rails 18L and 18R. .

[0042] At this time, unlike the prior art in which the vibration isolating rubber is directly interposed between the drive device and the gantry, the space necessary for installing the vibration isolating rubber is not limited. Large capacity of 41, 42, 43 can be taken.

In addition, since the span between the anti-vibration rubbers 41, 42, 43 can be sufficiently secured, the vertical spring constant of each anti-vibration rubber 41, 42, 43 can be set to a small value.

Thus, the specifications of the anti-vibration rubbers 41, 42, 43 can be set optimally in order to reliably block the vibration generated in the drive device 21.

[0043] In particular, the drive device 2 is arranged along with the traction sheave 20 so as to be coaxial. 1 also extends from the right wall SR of the hoistway S to the rear wall Sr. Therefore, most of the weight of the drive unit 21 is supported by the right car-side guide rail 11R and the left weight-side guide rail 18L. can do.

At this time, since the span between the first anti-vibration rubber 41 and the third anti-vibration rubber 43 is sufficiently large, the vertical spring constant of these anti-vibration rubbers 41 and 43 should be set to a small value. Can do. In addition, since the second anti-vibration rubber 42 on the right weight side guide rail 18R side is supported, the base 30 can be supported by the three anti-vibration rubbers 41, 42, 43. The load can be reduced.

Therefore, the vibration generated in the drive device 21 can be surely blocked so as not to be transmitted to the right wall SR and the rear wall Sr of the hoistway.

[0044] Similarly, as the car 10 and the counterweight 17 move up and down, the pair of front and rear lower deflecting sheaves 22, 23 rotate, so that vibration also occurs in these lower deflecting sheaves 22, 23. . Further, the upward external force acting on the pair of front and rear lower deflecting sheaves 22 and 23 via the hoisting rope 8 fluctuates as the car 10 and the counterweight 17 are moved up and down and stopped. The horizontal member 53 of the support frame 50 that supports the pair of front and rear lower deflecting sheaves 22 and 23 is supported by the front and rear vertical members 51 and 52 through the pair of front and rear vibration isolating rubbers 54 and 55. Connected to the bottom.

As a result, the vibration generated in the pair of lower deflecting sheaves 22 and 23 and the change in external force are transferred to the right wall SR of the hoistway S through the right car guide rail 11R and the right weight guide rail 18R. It is not transmitted to the rear wall Sr.

[0045] Further, since the upper deflecting sheave 24 rotates as the car 10 and the counterweight 17 are raised and lowered, the upper deflecting sheave 4 also vibrates.

Further, the downward external force acting on the upper deflecting sheave 24 via the hoisting rope 8 fluctuates as the riding force 10 and the counterweight 17 are moved up and down and stopped.

The gantry 30 that firmly supports the upper deflecting sheave 24 while being pressed is supported on the support members 36, 37, and 38 by vibration-proof rubbers 4, 42, and 43.

As a result, the vibration generated in the upper deflecting sheave 24 is transferred to the right wall SR and rear of the hoistway S via the right car-side guide rail 11R and the pair of left and right weight-side guide rails 18L and 18R. It is not transmitted to the wall Sr.

[0046] Further, since the upper deflecting sheave 24 is disposed on the gantry 30, the vertical distance between the upper deflecting sheave 24 and the lower deflecting sheaves 22, 23 can be increased.

Further, the vertical positions of the pair of front and rear lower deflecting sheaves 22 and 23 can be freely set by changing the lengths of the front and rear vertical members 51 and 52 constituting the support frame 50.

As a result, the vertical gap between the upper deflecting sheave 24 and the lower deflecting sheaves 22, 23 can be made as large as possible.

Therefore, in the upper rope 8, the portions 8d, 8e, 8f, and 8g that extend from the truss sheave 20 through the lower deflector sheaves 22, 23 and the upper deflector sheave 24 to the weight sheaves 17a, 17b are routed. Since it can be made more gradual, the durability of the hoisting rope 8 can be further improved.

In addition, since there is no difference in tension in each part of the lifting rope 8, there is no vertical vibration in the riding car 10 when the raising / lowering of the riding car 10 starts, and furthermore, the rope groove of each sheave and the lifting rope It is possible to prevent the generation of noise and vibration due to contact with 8.

[0047] Since the upper deflecting sheave 24 is disposed on the gantry 30, the upper deflecting sheave 24 and the counterweight 17 do not interfere with each other!

Thereby, the raising / lowering stroke of the counterweight 17 can be taken sufficiently large.

On the other hand, the gantry 30 and the support frame 50 are arranged so as to sandwich the first to third support members 36, 37, and 38 in the vertical direction.

As a result, the force acting on the tractive sheave 20 and the upper deflecting sheave 24 from the upper rope 8 to pull the gantry 30 downward and the force acting on the lower deflecting sheaves 22, 23 from the upper rope 8 The force pulling up the support frame 50 cancels each other when the first to third support members 36, 37, 38 are compressed in the vertical direction.

Therefore, the force that pulls down the pedestal 30 and the force that pulls up the support frame 50 do not apply a large bending moment or compressive force in the buckling direction to the car-side guide rail 11R and the weight-side guide rails 18L and 18R. 11R, 18L, 18R rail size can be minimized. [0049] Furthermore, the first vertical member 51 and the second vertical member 52 constituting the support frame 50 are arranged so as to extend in parallel with the car side guide rail 11R and the weight side guide rail 18R, respectively.

As a result, if the lower end of the first vertical member 51 and the second vertical member 52 and the intermediate portion in the vertical direction are fastened to the car side guide rail 11R and the weight side guide rail 18R, the car side guide rail 11R and the weight side guide rail 18R can be reinforced.

Therefore, it is possible to reduce the stagnation and deformation of the car-side guide rail 11R and the weight-side guide rail 18R caused by the weight of the drive unit 21 and the forces acting on the platform 30 and the support frame 50 from the upper rope 8 respectively. Can do.

[0050] Although one embodiment of the machine roomless elevator according to the present invention has been described in detail above, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications are possible! /.

For example, in the above-described embodiment, the anti-vibration rubber is used as the anti-vibration means. However, it is possible to use a combination of a spring element such as a coil spring and a damping element such as an oil damper.

[0051] In the embodiment described above, the support frame 50 that supports the lower deflecting sheaves 22, 23 is fixed to the first support member 36 and the second support member 37, and the first vertical member 51 and A fourth anti-vibration rubber 54 and a fifth anti-vibration rubber 55 are interposed between the second vertical member 52 and the horizontal member 53.

On the other hand, the upper ends of the first vertical member 51 and the second vertical member 52 of the support frame 50 are directly connected to the lower surface of the gantry 30, and the fourth anti-vibration rubber 54 and the fifth anti-vibration rubber 55 are omitted. Chisaru

Claims

The scope of the claims

[1] A car that is guided by a car-side guide rail and goes up and down in the hoistway.

A traction sheave disposed at the top of the hoistway;

An upper deflecting sheave disposed above the counterweight, wherein a portion extending upward from the lower deflector sheave of the upper rope guides the counterweight so as to extend downward;

With

The truss sheave sheave, the lower deflector sheave and the upper deflector sheave are arranged at a position higher than the floor surface of the highest floor among the floors on which the car is to land. Machine roomless elevator.

[2] a pedestal for supporting the traction sheave, the driving device and the upper deflecting sheave;

A support frame for supporting the lower deflecting sheave below the traction sheave; and a support frame and the support frame fixed to upper ends of the car side guide rail and the weight side guide rail. A support member;

Said cradle and said support frame, machine room-less E leveled ¹ according to claim 1, characterized in that attached to the support member so as to sandwich the supporting member in the vertical direction.

[3] The support frame includes:

Extends vertically along the car-side guide rail or the weight-side guide rail However, the upper end of each of the vertical members is connected to the support member, and the horizontal member extends horizontally between the lower ends of the vertical members to support the lower deflecting sheave.

3. The machine room-less device according to claim 2, wherein the pair of vertical members has a lower end portion and a central portion in the vertical direction connected to the car side guide rail and the weight side guide rail, respectively. elevator.

4. The machine room-less elevator according to claim 2, further comprising first vibration isolating means interposed between the gantry and the support member.

5. The machine room-less elevator according to claim 3, further comprising second vibration isolating means interposed between the pair of vertical members and the horizontal member.

6. The machine roomless elevator according to claim 4 or 5, wherein the vibration isolating means is a vibration isolating rubber.

[7] The machine nolemless elevator according to [4] or [5], wherein the vibration isolating means is a member made of a damping steel plate.