CN1884031A

CN1884031A - Machine room-free elevator

Info

Publication number: CN1884031A
Application number: CN 200610092579
Authority: CN
Inventors: 藤田晃英; 萩谷知文
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2005-06-20
Filing date: 2006-06-16
Publication date: 2006-12-27
Anticipated expiration: 2026-06-16
Also published as: JP2006347745A; CN100554121C; JP4914030B2

Abstract

One kind of no mechanical room elevator is provided, which has more effective spaces over and below the elevator car and minimized size of elevating passage for installation and maintenance. In the elevator, the winch suspends and drives two sides of the elevator car via the slings, and the slings set on two sides of the elevator car are wound through the pulley and deflecting pulley onto the winch in the sling winding ratio of 1 to 1. The slings wound onto the winch are combined as one sling set with sling winding ratio in the balance weight side of 2 to 1. In addition, the winch, the pulley and the deflecting pulley are configured outside the vertical projection of the elevator car.

Description

Machine room-less elevator

Technical field

The present invention relates to a kind of machine room-less elevator, in this machine room-less elevator, with the sidepiece both sides of hoist cable suspention lift car, and the lift car side is twined (roping) than different with the hoist cable of balance weight side.

Background technology

As existing elevator, machine room-less elevator (for example referring to Patent Document 1 is that the patent of invention spy of Japan opens the 2000-351552 communique) is as shown in Figure 3 and Figure 4 for example arranged.Fig. 3 is the birds-eye view of existing machine room-less elevator, and Fig. 4 is the front view of Fig. 3.

In Fig. 3 and Fig. 4, the wall of the hoist trunk of 1 expression lift car 2 and balance weight 3 liftings, 4 expression hoist cables, 5 and 6 expression deflection sheavies, 8 expressions are arranged on the beam of the supporting deflection sheave 5,6 at hoist trunk top, 9 expression electrical motors, 10 expressions are arranged on the pulley on balance weight 3 hammers, 11 expressions are the hoist cable fixed end of hoist cable 4 one ends fixedly, 12 expression inspection racks, and 13 expressions are arranged on the fence on the inspection rack 12,14 expression control panels, 15 expression metal tapes, 71 expression rope sheaves, 72 expression deflection sheavies.

In above-mentioned existing elevator, hoist cable 4 is connected the top of lift car 2, and extends to rope sheave 71 and deflection sheave 72 by deflection sheave 5,6.And hoist cable 4 is wound on the rope sheave 71, by under the effect of the propulsive effort of electrical motor 9, arrives the pulley 10 of balance weight 3 through pulley 72, and its end extends to the hoist cable fixed end 11 of inspection rack 12.

At this, hoist cable between lift car 2 and the electrical motor 9 twines than being 1: 1, and the hoist cable winding of electrical motor 9 and balance weight 3 is than being 2: 1.Because the former hoist cable twines than the hoist cable winding ratio that is lower than the latter, so compare with the amount of movement of the vertical direction of lift car 2, the amount of movement of the vertical direction of balance weight 3 diminishes.Therefore, therefore the space that balance weight 3 does not move of having back-outed on the top of balance weight 3 can effectively utilize this space as the space, Machine Room with same function, in this space electrical motor and control panel etc. can be set.

In described prior art, though on the roof of building, the Machine Room is not set, but the hoist cable 4 that pulley 5,6 twines an end and lift car 2 bindings need be set on the top of the vertical projection of lift car, and similarly also need to be used to support the beam 8 of this pulley 5,6.Therefore, in order to ensure the gap of elevator car upper, must increase the size of head room, so that pulley 5,6 and beam 8 can be set.And, in above-mentioned existing elevator,, control panel 14 and electrical motor 9 are set because the position outside the vertical projection of lift car is provided with inspection rack 12, guarantee to have the space, Machine Room of same function, therefore be difficult to accomplish further to dwindle the size in elevator hole with the Machine Room.

Summary of the invention

The object of the present invention is to provide a kind of machine room-less elevator, this machine room-less elevator can be guaranteed more available space at the upper and lower of lift car, can carry out installation, maintenance and care work with the size that is of a size of necessary minimal hoist trunk with respect to lift car simultaneously.

To achieve these goals, in machine room-less elevator of the present invention, drive the sidepiece both sides of lift car with the hoist cable suspention by winch, it is characterized in that, described hoist cable be arranged on described lift car about, hoist cable about this is wound on the winch by pulley and deflection sheave respectively, in described lift car side is that 1: 1 hoist cable twines ratio, then, hoist cable about after being wound on the described winch is merged into one group of hoist cable, makes in the balance weight side to be that 2: 1 hoist cable twines ratio, and, the allocation position of described winch and described pulley and described deflection sheave is positioned at outside the vertical projection of lift car.

According to technical scheme one of the present invention, compare with prior art constructions, can guarantee bigger space in the top and the bottom of lift car, can dwindle the size of head room, dwindle the size in elevator hole, and the machinery and equipment of lift car upper and lower can be set more easily, can shorten the time of assembling and maintenance.

In addition, according to technical scheme two of the present invention, owing to beyond the area of conter of lift car, and in the plane that constitutes with guide rail with guide rail and a pair of balance weight by a pair of lift car, pulley is set, so can realize the save spaceization of hoist trunk size.

Description of drawings

Fig. 1 is the birds-eye view of the machine room-less elevator of an embodiment of the invention;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the birds-eye view of existing machine room-less elevator;

Fig. 4 is the front view of Fig. 3.

Among the figure: the 101-hoist trunk; The 102-lift car; The 103-balance weight; 104a, b-lift car guide rail; 105a, b-balance weight guide rail; 106a, b-hoist cable; The 107-lift car links to be linked up with hoist cable; 108a, b-pulley; 109a, b-pulley; 110a, b-deflection sheave; The 111-winch; The 112-rope sheave; The 113-pulley; The 114-hoist trunk links to be linked up with hoist cable

The specific embodiment

Followingly describe with reference to the embodiment of accompanying drawing to machine room-less elevator of the present invention.

Fig. 1 is the birds-eye view of the machine room-less elevator of an embodiment of the invention, and Fig. 2 is the front view of Fig. 1.

In Fig. 1 and Fig. 2, lift car 102 and balance weight 103 lifting in hoist trunk 101.Upper and lower in the side of lift car 102 and balance weight 103 is equipped with not shown guiding device, by the guiding of this guiding device, lift car 102 along lift car with

guide rail

104a, 104b lifting.Balance weight 103 is also the same with lift car 102, along balance weight guide rail 105a, 105b unimpededly lifting in hoist trunk, and can not make lift car produce.

In addition, in lift car 102, near its center of gravity both sides sidepiece is by fixedly hoist cable 106a, 106b (have represented a hoist cable respectively about this, but generally speaking about many hoist cables are set respectively) hoist cable hook 107a, the 107b of end directly linked, perhaps be bonded with equipment by fixing.This hoist cable 106a, 106b are wound on pulley 108a, the 108b that is positioned at directly over it, and are reeled and extend to different pulley 109a, the 109b in position highly identical with described

pulley

108a, 108b but horizontal direction.Then, through deflection sheave 110a, the 110b under being arranged on, be wound on the integrally formed rope sheave 112 of winch 111 on.Therefore, lift car 102 twines than carrying out lifting with 1: 1 hoist cable.

On the other hand, the hoist cable 106a, the 106b that are wound on the rope sheave 112 are merged into one group, process is set in place the pulley 113 on the top of the balance weight 103 on its vertical extended line, be used to the end is fixed on the directly binding of hoist cable hook 114 at hoist trunk top, perhaps be bonded with equipment by fixing.Therefore, the balance weight side becomes 2: 1 hoist cable winding ratio.

And, with the allocation position of described winch 111 and described

pulley

108a, 108b and

pulley

109a, 109b and described

deflection sheave

110a, 110b, be arranged on the outer position of vertical projection of lift car.

According to said structure, compare with prior art constructions, bigger space can be guaranteed in top and bottom at lift car 102, therefore can dwindle the head room size, dwindle the size in elevator hole, and the machinery and equipment of lift car 102 upper and lowers can be set more easily, can shorten the time of assembling and maintenance.

And, by in the plane that constitutes with guide rail 105a, 105b with

guide rail

104a, 104b and a pair of balance weight by a pair of lift car,

configuration pulley

108a, 108b,

pulley

109a, 109b and described

deflection sheave

110a, 110b can realize the save spaceization of hoist trunk size.

And, because the gauge of lift

car guide rail

104a, 104b and balance weight guide rail 105a, 105b is measure-alike, so not only balance weight is accommodated

deflection sheave

110a, 110b and winch 111 etc. with the space that has enough spaciousnesses between guide rail 105a, the 105b, and the installation of guide rail becomes and is more prone to.

Claims

1. a machine room-less elevator by the sidepiece both sides of winch with hoist cable suspention driving lift car, is characterized in that,

Described hoist cable be arranged on described lift car about, hoist cable about this is wound on the winch by pulley and deflection sheave respectively, in described lift car side is that 1: 1 hoist cable twines ratio, then, hoist cable about after being wound on the described winch is merged into one group of hoist cable, makes in the balance weight side to be that 2: 1 hoist cable twines ratio, and, the allocation position of described winch and described pulley and described deflection sheave is positioned at outside the vertical projection of lift car.

2. machine room-less elevator as claimed in claim 1 is characterized in that,

Described pulley and described deflection sheave are arranged in the plane that is made of with guide rail with guide rail and a pair of balance weight a pair of lift car.

3. machine room-less elevator as claimed in claim 2 is characterized in that,

Described lift car is with measure-alike with the gauge of guide rail of guide rail and described balance weight.

4. machine room-less elevator as claimed in claim 1 is characterized in that,

Hoist cable about above-mentioned is constituted as, one end of the hoist cable about above-mentioned links separately with two sidepieces of described lift car respectively, then with about hoist cable be wound on respectively and separately be arranged on upper left side and the top-right pulley, be wound on then and be separately positioned on lower left and the bottom-right deflection sheave and it is turned to, be wound on afterwards on the rope sheave of the winch that is arranged on the top, and make the hoist cable about described be merged into one group of hoist cable at this rope sheave place, and it is wound on the pulley on the balance weight top on the vertical extension line that is arranged on rope sheave below, be attached at the top of hoist trunk at last.