CN1727273A

CN1727273A - Elevator appts.

Info

Publication number: CN1727273A
Application number: CN 200510087430
Authority: CN
Inventors: 大菅重幸; 萩谷知文
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2004-07-26
Filing date: 2005-07-22
Publication date: 2006-02-01
Anticipated expiration: 2025-07-22
Also published as: JP4301105B2; CN100460302C; JP2006036416A

Abstract

This elevator device has a first riding car 4 elevating along a guide rail 9, and a second riding car 3 elevating along a guide rail 10. The device is equipped with a first rope 5 connecting the first riding car 4 with the second riding car 3, a second rope 17 connected with the first riding car 4 separately from the first rope 5, and a winding machine 6 driven with the second rope 18 wound around a sheave 7. The invention provides an elevator device for improving transporting efficiency even with a small driving force.

Description

Lift appliance

Technical field

The present invention relates to a kind of lift appliance, this lift appliance has a plurality of lift cars along lifting rail.

Background technology

As look-ahead technique, for example, a kind of two platform elevators that drive two lift cars with a winch are disclosed in patent documentation 1.In addition, a kind of lift appliance is disclosed in patent documentation 2, in this lift appliance, except being used to suspend in midair first hoist cable of lift car and counterbalanced weight, also be provided with and counterbalanced weight bonded assembly second hoist cable, and possess the winch of reeling and driving this second hoist cable.

[patent documentation 1] spy opens flat 5-238661 communique (Fig. 1)

[patent documentation 2] No. 3148610 specification sheets of patent (Figure 14).

, as above-mentioned two platform elevators, when only driving two lift car liftings, need to be provided with winch with powerful propulsive effort with a winch.On the other hand, except being used to suspend in midair first hoist cable of lift car and counterbalanced weight, also second hoist cable is wound on the winch,, can't improves transport efficiency though can adopt the less winch of propulsive effort with in the lift appliance that drives.

Summary of the invention

The object of the present invention is to provide a kind of lift appliance, this lift appliance not only can adopt the less winch of propulsive effort, and can improve transport efficiency.

To achieve these goals, lift appliance of the present invention has a plurality of lift cars along lifting rail, wherein, be provided with first hoist cable that connects described a plurality of lift cars, be connected with any one lift car in described a plurality of lift cars and be independent of second hoist cable of this first hoist cable setting and be used to reel and drive the winch of this second hoist cable.

(invention effect)

According to the present invention, a kind of lift appliance can be provided, this lift appliance not only can adopt the less winch of propulsive effort, and can improve transport efficiency.

Description of drawings

Fig. 1 is the scheme drawing of the lift appliance of expression first embodiment of the invention.

Fig. 2 is the horizontal sectional drawing of the hoist trunk of the lift appliance of expression first embodiment of the invention.

Fig. 3 is the scheme drawing of the lift appliance of expression second embodiment of the invention.

Fig. 4 is the horizontal sectional drawing of the hoist trunk of the lift appliance of expression second embodiment of the invention.

Fig. 5 is the scheme drawing of the lift appliance of other embodiment of expression.

Fig. 6 has the scheme drawing of lift appliance of the embodiment of Machine Room for expression.

Among the figure: 1-hoist trunk, 2-Machine Room, 3-second lift car, 4-first lift car, 5-first hoist cable, 6-winch, the 7-rope sheave, 8a, 8b-local derviation pulley, 9, the 10-guide rail, 11a, 11b, 12a, 12b-pulley, 13,14a, 14b, 15,16-return pulley, 17-second hoist cable, 18, the 19-angle pulley, 20,21,22-hoist cable hook, the 23-beam.

The specific embodiment

Followingly embodiments of the invention are described with reference to accompanying drawing.

Fig. 1 is the scheme drawing of the lift appliance of the expression first embodiment of the present invention.Fig. 2 is the horizontal sectional drawing of the lift appliance hoist trunk of expression present embodiment.For the ease of the integral structure of the lift appliance of understanding present embodiment, the situation that is provided with of equipment in the hoist trunk among Fig. 1, for example pulley towards slightly different with Fig. 2 with the position of winch etc.

As depicted in figs. 1 and 2, in the lift appliance of present embodiment, first lift car 4 and second lift car 3 are arranged in the hoist trunk 1, and beam 23 along continuous straight runs are arranged on the top of this hoist trunk 1.And first lift car 4 is configured to along guide rail 9 liftings, and second lift car 3 is configured to along guide rail 10 liftings.In addition, the lift appliance of present embodiment has first hoist cable 5 that connects first lift car 4 and second lift car 3, is connected with first lift car 4 and is independent of second hoist cable 17 of these first hoist cable, 5 settings and is used to reel and drives the winch 6 of this second hoist cable 17.

Wherein, an end of first hoist cable 5 is fixed on the hoist cable hook 21 that is arranged on the beam 23.And the other end of first hoist cable 5 extends towards the below from hoist cable hook 21, through after being arranged on pulley 12a, the 12b of first car, 4 belows, extending to toward the top to be arranged on and returns pulley 13 on the beam 23.Extend towards the below by the other end that returns first hoist cable 5 after pulley 13 commutation,, extend and be fixed on the hoist cable that is arranged on the beam 23 toward the top and link up with on 20 through after being arranged on pulley 11b, the 11a of second lift car, 3 belows.

In addition, an end of the 2nd hoist cable 17 is fixed on the hoist cable hook 22 that is arranged in first lift car 4.And the other end of second hoist cable 17 extends towards the top from hoist cable hook 22, through being arranged on the beam 23 return pulley 14a after extend toward the below, be wound on the rope sheave 7 of winch 6 through behind the angle pulley 19.Be wound on the other end of second hoist cable 17 on the rope sheave 7, through angle pulley 18 extend to towards the below be positioned at hoist trunk 1 bottom return pulley 14b.By returning the other end of second hoist cable 17 after pulley 14b commutates, extend towards the top and be fixed on the hoist cable that is arranged in first lift car 4 and link up with on 22.

In above-mentioned lift appliance, drive second hoist cable 17 by winch 6, make 4 liftings of first lift car, the then lifting under the driving of this first car 4 of second lift car 3.In addition, according to present embodiment, keep weight balancing by the mode with first hoist cable, 5 suspention first lift cars 4 and second lift car 3, its result can reduce the propulsive effort that winch 6 need possess.And, in the present embodiment,,, improve passenger's transport efficiency of lift appliance so can realize effective utilization in space in the hoist trunk 1 because counterbalanced weight is not set.

Like this, by second hoist cable 17 is set outside first hoist cable 5 separately, the friction force that is produced by the rope sheave 7 of winch 6 then can not be delivered on first hoist cable 5, therefore can prolong the service life of first hoist cable 5.And, even the condition enactment about alternating bending of first hoist cable 5 is got stricter, specifically, be exactly to increase the commutation number of times, it is commutated in the opposite direction, perhaps dwindle the diameter that returns pulley etc., also can fully keep its service life.And, return the reduced of pulley after, can also accomplish to save the space on hoist trunk 1 top.

Certainly, owing to the load that acts on the rope sheave 7 reduces, so, compare with first hoist cable 5, can use to allow the second smaller hoist cable 17 of breaking load.In addition,, then can dwindle the diameter of rope sheave 7, and required propulsive effort can dwindle relatively also, therefore can realize the miniaturization and the lightweight of winch 6, thereby can improve the installation exercise condition of winch 6 by dwindling the diameter of second hoist cable 17.Therefore, can accomplish to save space in the hoist trunk 1.

And, by adopting long cartridge type or slim winch 6, in the clearance spaces of the vertical projection that can make winch 6 between the vertical projection of the vertical projection of first lift car 4 and second lift car 3.Therefore, the area ratio between the area of the area of hoist trunk 1 and lift car can be improved, the traffic capacity of elevator can be fully kept.

And, when a lift car in first lift car 4 or second lift car 3 is positioned at top layer (the superiors), the lower end of winch 6 is positioned at than on the low position, this lift car upper end, and when a lift car in first lift car 4 or second lift car 3 was positioned at bottom (orlop), the upper end of winch 6 was positioned at than on the high position, this lift car lower end.Thus, winch 6 grades can not given prominence on the short transverse of hoist trunk 1, so can save the space of short transverse.Especially in the present embodiment, because it is low that the upper end of winch 6 is configured to the upper end of the lift car when being positioned at top layer, and the lower end of winch 6 is configured to the lower end height of the lift car when being positioned at bottom, so can more effectively save the space of hoist trunk short transverse.

Followingly the second embodiment of the present invention is described with reference to Fig. 3 and Fig. 4.In the present embodiment, by winch 6 is arranged on the beam 23, winch 6 can be arranged on the top of hoist trunk 1.And, can also directly second hoist cable 17 be wound on the rope sheave 7 of winch 6 without deflection sheave as present embodiment.Certainly, also can be as shown in Figure 5, winch 6 is arranged on bottom in the hoist trunk 1.

In the above-described embodiments, the lift appliance that so that the Machine Room not to be set winch 6 is arranged in the hoist trunk 1 is that example is illustrated, but also can be as shown in Figure 6, adopts winch 6 grades are arranged on structure in the Machine Room 2.According to present embodiment,,, can save the space in the Machine Room 2 owing to can realize the miniaturization of winch 6 as the foregoing description.

And, though in the above-described embodiments, be that example is illustrated all with the lift appliance that connects two lift cars, also go for connecting the lift appliance of three above lift cars.And, so-called connect lift car with hoist cable, also do not comprise hoist cable directly is fixed on the lift car, and the situation of the support load such as pulley by the lift car below.

Claims

1. lift appliance, this lift appliance has a plurality of lift cars along lifting rail, it is characterized in that:

Possess first hoist cable that connects described a plurality of lift cars, be connected with any one lift car in described a plurality of lift cars and be independent of second hoist cable of this first hoist cable setting and be used to reel and drive the winch of this second hoist cable.

2. lift appliance according to claim 1 is characterized in that the vertical projection of described winch is between the vertical projection of described a plurality of lift cars.

3. lift appliance according to claim 1 and 2, it is characterized in that, when any one lift car in described a plurality of lift cars is positioned at top layer, the lower end of described winch is positioned at than on the low position, this lift car upper end, when any one lift car in described a plurality of lift cars was positioned at bottom, the upper end of described winch was positioned at than on the high position, this lift car lower end.

4. according to any described lift appliance in the claim 1 to 3, it is characterized in that described winch is long cartridge type winch or slim winch.

5. lift appliance, this lift appliance has along first lift car of lifting rail and second lift car, it is characterized in that:

Possess first hoist cable, second hoist cable and coiling and drive the winch of described second hoist cable, one end of described first hoist cable, through being fixed on the top of hoist trunk behind the below of described first lift car, the other end extends upward from described first lift car, extend towards the below by returning pulley commutation back, through being fixed on the top of hoist trunk behind the below of described second lift car; One end of described second hoist cable is fixed on described first lift car, the other end is through being fixed on described first lift car behind the described winch again, and the vertical projection of described winch is between the vertical projection of the vertical projection of described first lift car and described second lift car.