CN101037168A - The elevator device - Google Patents

The elevator device Download PDF

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Publication number
CN101037168A
CN101037168A CN 200710096590 CN200710096590A CN101037168A CN 101037168 A CN101037168 A CN 101037168A CN 200710096590 CN200710096590 CN 200710096590 CN 200710096590 A CN200710096590 A CN 200710096590A CN 101037168 A CN101037168 A CN 101037168A
Authority
CN
China
Prior art keywords
linear motor
hoist cable
pulley
lift
hoist
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 200710096590
Other languages
Chinese (zh)
Inventor
荒堀升
萩谷知文
藤野笃哉
早野富夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2004055639A priority Critical patent/JP4265444B2/en
Priority to JP2004055639 priority
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of CN101037168A publication Critical patent/CN101037168A/en
Pending legal-status Critical Current

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Abstract

The present invention provides an elevator system. An elevator cage moves along guide rails in an elevatable channel. The elevator system is provided with a rope on the primary side of the linear motor in the elevatable channel, which is used as secondary conductor of the linear motor. The rope suspend the cage in a 2:1 pulley roping mode by using a pulley disposed under the cage, and the pulley is provided with a brake device.

Description

Lift appliance
The application is based on dividing an application of application number is 200510009101.6, denomination of invention for " lift appliance ", the applying date is on February 3rd, 2005 patent application.
Technical field
The present invention relates to a kind of lift appliance that uses linear motor.
Background technology
As prior art, disclosed the lift appliance that uses linear motor to obtain to drive propulsive force.Especially disclose a kind of lift appliance that hoist cable itself is used as the secondary conductor of linear motor in the patent documentation one, wherein, this hoist cable connects into the well-bucket shape with lift car and counterbalanced weight.
Patent documentation one: Japanese kokai publication sho 58-17088 communique
, the propulsive force of the lift appliance of use linear motor is generally all more weak, is not easy to drive the elevator of big load.And also there is same problem in disclosed lift appliance in the patent documentation one, because it has adopted 1: 1 pulley canoe, so aspect the driving lift appliance, the thrust of linear motor is not talkative very abundant.
Summary of the invention
Even the object of the present invention is to provide a kind of use linear motor, also can fully guarantee the lift appliance of the driving of lift car.
To achieve these goals, in lift appliance of the present invention, lift car moves along the guide rail in the hoist trunk, the primary side of linear motor is set in described hoist trunk, will suspends of the secondary conductor use of the hoist cable of described lift car in midair with 2: 1 pulley canoe as linear motor.
The invention provides a kind of lift appliance, the lift car of this lift appliance and counterbalanced weight move along the guide rail in the hoist trunk, it is characterized in that, has the primary side that is arranged on the linear motor in the described hoist trunk and as the hoist cable of linear motor secondary conductor, suspend described lift car via the pulley that is arranged on described lift car below in midair with 2: 1 pulley canoe, it is not overlapping that the primary side of described linear motor and described lift car and described counterbalanced weight are configured to mutual vertical projection, in the hoist cable of the described lift car of suspention, be fixed on the parts by described hoist trunk or described guide rail support near near the side the described counterbalanced weight, in the hoist cable of the described lift car of suspention, side away from described counterbalanced weight is extended towards described balance heavy side via first upper sheave that is arranged on described hoist trunk top, extend below a side direction via second upper sheave that is arranged on described hoist trunk top away from described lift car, via be arranged on the described counterbalanced weight pulley near a side of described lift car towards above extend, and be fixed on the parts by described hoist trunk or guide rail support.According to the present invention,, also can fully guarantee the lift appliance of the driving of lift car even a kind of use linear motor can be provided.
The invention provides a kind of lift appliance, the lift car of this lift appliance moves along the guide rail in the hoist trunk, it is characterized in that, has the primary side that is arranged on the linear motor in the described hoist trunk and as the hoist cable of the secondary conductor of linear motor, described hoist cable suspends described lift car via the pulley that is arranged on described lift car below in midair with 2: 1 pulley canoe, and described pulley is provided with brake equipment.
Description of drawings
Fig. 1 is all constructionals drawing of the lift appliance of expression first embodiment of the invention.
Fig. 2 is all constructionals drawing of the lift appliance of expression second embodiment of the invention.
Fig. 3 is all constructionals drawing of the lift appliance of expression third embodiment of the invention.
Fig. 4 is the scheme drawing of an example of expression hoist cable.
Fig. 5 is the scheme drawing of another example of expression hoist cable.
Fig. 6 is the details drawing of linear motor.
Among the figure: 1-lift car, 2-counterbalanced weight, 3-linear motor primary side, 4-hoist cable, the 10-hoist trunk, 11,12,21, the 22-pulley, 31,32,33, the 34-guiding device, 51-first upper sheave, 52-second upper sheave, 70-rotary encoder, 81, the 82-electro-magnetic braking device.
The specific embodiment
Followingly embodiments of the invention are described with reference to accompanying drawing.
Fig. 1 is all constructionals drawing of the lift appliance of expression first embodiment of the invention.As shown in Figure 1, lift car 1 and the counterbalanced weight 2 that moves along not shown guide rail in the hoist trunk 10 is hung as the well-bucket shape by very thin tabular hoist cable 4.
One end of this hoist cable 4 is fixed on the fixed parts 60 by guide rail support by hardware for mounting 41.The other end of hoist cable 4 extends upward via the pulley 12,11 that is arranged at lift car 1 below, primary side 3 through linear motor, again via first upper sheave 51 that is arranged at hoist trunk top and second upper sheave 52, and extend upward via the pulley 22,21 that is arranged on the counterbalanced weight 2, be fixed on the fixed parts 60 by hardware for mounting 42.And fixed parts 60 also can be with supportings such as the wall of hoist trunk and beams except that guide rail.
At this moment, hoist cable 4 adopts 2: 1 pulley canoes, just the so-called lower sheave mode of extending upward via the pulley 12,11 below the lift car.This hoist cable 4 is in the supporting elevator load, and as the secondary conductor use of linear motor, directly transmission of drive force is compared with the elevator that adopts traction sheave, and the life-span of hoist cable has obtained significantly improving.And,,, also can provide sufficient propulsive effort to lift car 1 even rely on the propulsive force of electrical motor owing to adopted 2: 1 pulley canoe.
In addition, in the hoist cable 4 of the described lift car 1 of suspention, be fixed on the fixed parts 60, then extend towards counterbalanced weight 2 sides via first upper sheave 51 that is arranged on hoist trunk 10 tops away from a side of counterbalanced weight 2 near near the side the counterbalanced weight 2.And, this hoist cable 4 extends below the side direction away from lift car 1 via second upper sheave 52 that is arranged on hoist trunk 10 tops, via be arranged on the counterbalanced weight pulley 22,21 near a side of lift car 1 towards above extend, and be fixed on the fixed parts 60.So, hoist cable 4 is to same direction bending, and is promptly so-called forward crooked, so the life-span of hoist cable is improved.
And,,, therefore can dwindle the space of hoist trunk so the diameter of each pulley 11,12,51,52,21,22 can form forr a short time than common hoist cable because hoist cable 4 is very thin plate.
The primary side 3 of linear motor adopts so-called bilateral type, is folded between the iron core and iron core of linear motor in the mode across air gap therebetween as the hoist cable 4 of secondary conductor, forms the sandwich shape.Because the hoist cable that uses as secondary conductor 4 is made up of steel wire, if adopt one-sided formula, can be attracted on the iron core because of electromagnetic attraction, but after as present embodiment, adopting bilateral type, can make from the electromagnetic attraction of primary side and cancel out each other, so can obtain stable thrust.
In order to obtain stable driving, be used to guide the guiding device 31,32,33,34 of hoist cable 4 passageway part being provided with of linear motor primary side 3.Certainly, by other guiding device is set in addition in the inside of linear motor primary side 3, can prevent that hoist cable from being adsorbed by electromagnetic attraction.
And, when the primary side 3 of linear motor is connected three plase alternating currents, relative with first side winding to secondary conductor just flow through inducing current in the hoist cable 4, thrust takes place thus.In general, linear motor can be arranged to the primary side motion, also can be arranged to the secondary side motion, be hoist cable 4 motions that make as secondary conductor in the present embodiment.So hoist cable 4 obtains thrust, with certain speed lift car 1 is driven into certain position.
In addition, as mentioned above, by adopting the lower sheave mode, by the secondary conductor that will extend upward from pulley 11 just the primary side 3 of hoist cable 4 and linear motor be arranged on and produce on the interactional position, the primary side 3 of lift car 1, counterbalanced weight 2 and linear motor can be arranged to the mutual nonoverlapping state of its vertical projection, therefore can save the space of short transverse.And, when lift car 1 be positioned at top near the time, linear motor primary side 3 comprise comparing with the pulley 11 that is arranged on lift car 1 below bottom of guiding device 32 be positioned at the top.Thus, can avoid guiding device 32 and hoist cable 4 etc. to bear excessive load.Certainly, by improving the intensity of guiding device 32, the pulley that other perhaps is set under guiding device 32 also can be arranged on the primary side 3 of linear motor the below of lift car 1 with as the biasing pulley.
In addition, rotate to produce the rotary encoder 70 of pulse by hoist cable 4 and frictional force drives, primary side 3 by linear motor or the support unit (not shown) of drawing from guide rail are installed, and the output of this rotary encoder 70 is used thrust with the control linear motor as the speed signal of elevator and position signal.Not shown control setup is normally used contravariant control setup.In addition, the electro-magnetic braking device 81,82 that is used for static maintenance lift car 1 is set in place the pulley 11,12 in lift car 1 below, when elevator travels, make brake equipment 81,82 energising open, when elevator stops to travel, cut off to the power supply of brake equipment making brake equipment produce braking force.
Fig. 2 is all constructionals drawing of the lift appliance of expression second embodiment of the invention.In first embodiment, between the pulley 11 and first upper sheave 51 of lift car 1 side, primary side 3 by linear motor provides the driving propulsive force to hoist cable 4, but in the present embodiment, then provides the driving propulsive force between the pulley 22 of counterbalanced weight 2 sides and second upper sheave 52.
In addition, when counterbalanced weight 2 be positioned at top near the time, linear motor primary side 3 comprise guiding device 31 bottom be arranged on counterbalanced weight 2 on pulley 22 compare be positioned at the top.By such structure, can obtain the effect identical with first embodiment.
Fig. 3 is all constructionals drawing of the lift appliance of expression third embodiment of the invention.It is characterized in that the primary side 3 of linear motor is horizontally set on the top of hoist trunk 10, the sus-pension of suspending lift car 1 and counterbalanced weight 2 by hoist cable 4 in midair is identical with other embodiment.In the present embodiment, be arranged between first upper sheave 51 and second upper sheave 52 that is arranged at hoist trunk top by primary side 3 linear motor, can effectively utilize the space on hoist trunk 10 tops, compare with above-mentioned other embodiment, can further dwindle the vertical projection area of hoist trunk 10.In addition, can also reduce the biasing load of linear motor guide apparatus 31,32,33,34.
Fig. 4 is the scheme drawing of hoist cable 4, adopt suitable method finer wire to be twisted the hoist cable component parts that is called as bundled steel wires with formation, and by to the appropriate combination of this hoist cable component parts, forms the formation that a hoist cable 401,402,404N dispose with linearity.At this, also can adopt carbon fiber and aluminum steel to wait and replace steel wire.
Certainly, also hoist cable can be arranged to the shape of multilayer, and, as shown in Figure 5,, the hoist cable of small-sized steel wire pencil can be set in the gap also in order to improve conductivity and intensity.Further, can be by surperficial with coating such as formation such as resin 410 grades at hoist cable, the life-span of improving hoist cable, can prevent to contact with the first side winding generation of linear motor, can dwindle the air gap of linear motor as much as possible.In addition, owing to can dwindle the diameter of pulley, therefore can conserve space.
Fig. 6 is the details drawing of linear motor.The primary side 3 of linear motor is configured to the form that stator core 3A and 3B face one another.Hoist cable 4 as secondary conductor passes through between the two.Winding 3A1,3A2,3A3 and 3B1,3B2,3B3 etc. have been assembled on stator core 3A and the 3B respectively.And, make three phase current flow through separately winding, can produce thrusts to hoist cable 4 as secondary conductor.At this moment, only need dwindle air gap as much as possible, just can improve the efficient of linear motor.For this reason, be necessary the gap between the guide roller of described guiding device is formed more than the thickness of hoist cable 4, and below the aggregate value of the thickness of hoist cable 4 and linear motor air gap.Thus, as the hoist cable 4 of secondary conductor can be stably inside by linear motor.

Claims (4)

1. lift appliance, the lift car of this lift appliance moves along the guide rail in the hoist trunk, it is characterized in that, has the primary side that is arranged on the linear motor in the described hoist trunk and as the hoist cable of the secondary conductor of linear motor, described hoist cable suspends described lift car via the pulley that is arranged on described lift car below in midair with 2: 1 pulley canoe, and described pulley is provided with brake equipment.
2. lift appliance according to claim 1 is characterized in that, it is not overlapping that the primary side of described linear motor and described lift car and described counterbalanced weight are configured to mutual vertical projection.
3. lift appliance according to claim 1 is characterized in that, the guiding device to described hoist cable channeling conduct is installed on the hoist cable passageway part of described linear motor primary side.
4. lift appliance according to claim 1 is characterized in that, is provided with according to moving of described hoist cable and produces the impulse deviser of pulse, and the output of this impulse deviser is used as the speed control signal and the elevator car position signal of elevator.
CN 200710096590 2004-03-01 2005-02-03 The elevator device Pending CN101037168A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004055639A JP4265444B2 (en) 2004-03-01 2004-03-01 Elevator equipment
JP2004055639 2004-03-01

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100091016A Division CN1319840C (en) 2004-03-01 2005-02-03 The elevator device

Publications (1)

Publication Number Publication Date
CN101037168A true CN101037168A (en) 2007-09-19

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Family Applications (2)

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CNB2005100091016A Expired - Fee Related CN1319840C (en) 2004-03-01 2005-02-03 The elevator device
CN 200710096590 Pending CN101037168A (en) 2004-03-01 2005-02-03 The elevator device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CNB2005100091016A Expired - Fee Related CN1319840C (en) 2004-03-01 2005-02-03 The elevator device

Country Status (2)

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JP (1) JP4265444B2 (en)
CN (2) CN1319840C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102452599A (en) * 2010-11-02 2012-05-16 株式会社日立制作所 Elevator
CN102762480A (en) * 2010-03-17 2012-10-31 株式会社日立制作所 Space-saving elevator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014104458A1 (en) * 2014-03-28 2015-10-01 Thyssenkrupp Elevator Ag elevator system
JP2019048711A (en) * 2017-09-12 2019-03-28 株式会社日立製作所 Elevator and elevator control method
WO2020008521A1 (en) * 2018-07-03 2020-01-09 株式会社日立製作所 Linear induction motor and elevator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954037A (en) * 1975-07-09 1976-05-04 Emilio Retana Rodriguez Linear motor band saw
JPS5817088B2 (en) * 1979-01-18 1983-04-05 Oriental Chain Mfg
JPS6341831B2 (en) * 1982-10-04 1988-08-18 Mitsubishi Electric Corp
US5226507A (en) * 1992-10-20 1993-07-13 Otis Elevator Company Roping method of an elevator
FI98256C (en) * 1992-11-25 1997-05-12 Kone Oy Linear induction motor and elevator with linear motor
JP3278285B2 (en) * 1994-03-22 2002-04-30 キヤノン株式会社 Refeeding apparatus and image forming apparatus
DE69908908T2 (en) * 1998-02-26 2004-05-19 Otis Elevator Co., Farmington MACHINE-FREE LIFTING SYSTEM WITH LIFT DRIVE IN THE LIFT CABIN

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102762480A (en) * 2010-03-17 2012-10-31 株式会社日立制作所 Space-saving elevator
CN102762480B (en) * 2010-03-17 2015-02-04 株式会社日立制作所 Space-saving elevator
CN102452599A (en) * 2010-11-02 2012-05-16 株式会社日立制作所 Elevator

Also Published As

Publication number Publication date
JP4265444B2 (en) 2009-05-20
CN1663905A (en) 2005-09-07
JP2005239418A (en) 2005-09-08
CN1319840C (en) 2007-06-06

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SE01 Entry into force of request for substantive examination
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Open date: 20070919