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CN101932520A - Elevator device and method of testing the same - Google Patents

Elevator device and method of testing the same Download PDF

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Publication number
CN101932520A
CN101932520A CN2008801259976A CN200880125997A CN101932520A CN 101932520 A CN101932520 A CN 101932520A CN 2008801259976 A CN2008801259976 A CN 2008801259976A CN 200880125997 A CN200880125997 A CN 200880125997A CN 101932520 A CN101932520 A CN 101932520A
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CN
China
Prior art keywords
counterweight
car
confining force
lift appliance
suspension unit
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Granted
Application number
CN2008801259976A
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Chinese (zh)
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CN101932520B (en
Inventor
光井厚
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of CN101932520A publication Critical patent/CN101932520A/en
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Publication of CN101932520B publication Critical patent/CN101932520B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087Devices facilitating maintenance, repair or inspection tasks
    • B66B5/0093Testing of safety devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

In an elevator apparatus, a car is suspended by suspension means on one side of a drive sheave. A counterweight is suspended by the suspension means on the other side of the drive sheave. A safety device, which is engaged with car guide rails to cause the car to make an emergency stop, is mounted to the car. For conducting a test for verifying actuation of the safety device, a retention force application device applies a retention force less than an unbalanced load of the car and the counterweight to the suspension means on a counterweight side of the drive sheave.

Description

Lift appliance and test method thereof
Technical field
The present invention relates to the lift appliance of emergency braking device and the test method that the work of this emergency braking device is confirmed are installed at car.
Background technology
Generally, in the lift appliance of draw mode, when test is implemented in the work of emergency braking device, under the state that makes emergency braking device work, make towing machine to the direction running that car is descended.Then, rope sheave dallies, car does not descend, and then is judged as emergency braking device normal operation (for example, with reference to patent documentation 1) if drive.
In the test method of aforesaid emergency braking device, need make to drive the rope sheave rotation and surpass the traction limit and skid fully up to rope, therefore need satisfy the condition of following formula.
W2/W1≥Γs......(1)
Wherein, W1 is the weight of car, and W2 is the weight of counterweight, the pulling ability when Γ s is the traction limit.
In addition, when the diameter of establishing the driving rope sheave was D, the torque Ts1 that produces the required driving rope sheave of rope slipping was expressed by following formula.
Ts1=D/2×(W2-W1)......(2)
Then, by being updated to formula (2), formula (1) obtains following formula.
Ts1=D/2×W2×(1-1/Γs)......(3)
Hence one can see that, when the weight of counterweight becomes big, makes to drive the required torque increase of rope sheave idle running.
For example, when the rated load of establishing lift appliance was CAP, overbalance torque T0 calculated by following formula.Wherein, establish W2=W1+0.5CAP.
T0=D/2×[(W1+CAP)-W2]=0.25CAP×D......(4)
Relative therewith, for example when the contact angle that the shape coefficient of establishing the rope groove shape (being assumed to 40 ° V-shaped groove) that drives rope sheave is K2=1/sin (40/2)=2.92, to drive friction coefficient between rope sheave and the rope be μ=0.2, drive rope sheave and rope is θ=150 °, the following formula establishment.
Ts1=D/2×W2×[1-1/(e 2.92×0.2×150/180×π)]
=0.783×W2×D/2......(5)
Herein, when the weight W 1 of establishing car is 1.5 * CAP, W2=2.0CAP (weight of rope class is ignored), so following formula is set up.
Ts1=0.783CAP×D......(6)
Comparison expression (4) and formula (6), the required torque Ts1 of idle running that drives rope sheave is about 3 times of overbalance torque T0, even consider the required torque of the acceleration and deceleration of car (be generally overbalance torque T0 about 2 times), only, just need very big motor torque for the work comfirmation test of emergency braking device.
In addition, the lift appliance of traction-type is required to have such performance: arrived at car or counterweight under the state of energy disperser of hoistway bottom, driven the rope sheave rotation, also no longer further promoted counterweight or car even continue to make.As the test method that is used to confirm to satisfy this performance, there is such method: under the strictest condition, promptly, in that to make car be no-load condition and be positioned in counterweight on the energy disperser, make then and drive rope sheave under the state of the direction rotation that car is risen, confirm with respect to rope idle running driving rope sheave.
The required torque Ts2 of driving rope sheave idle running is tried to achieve by following formula.
Ts2=D/2×(W1-W2)=D/2×W1×(1-1/Γs)......(7)
Herein, when establishing W1=1.5CAP, following formula is set up.
Ts2=0.587CAP......(8)
Even required maximum torque considers that the emergency operation state also still is the torque shown in the formula (8) under the operative condition of lift appliance, the torque required with respect to the work comfirmation test of emergency braking device of this maximum torque is about 75%.
Patent documentation 1: TOHKEMY 2007-8611 communique
In aforesaid existing lift appliance, in order to carry out the work comfirmation test of emergency braking device, need very big motor torque, thereby towing machine maximizes.
Summary of the invention
The present invention finishes in order to solve problem as described above, and its purpose is to obtain the required motor torque of a kind of work comfirmation test that can reduce emergency braking device and makes the lift appliance and the test method thereof of towing machine miniaturization.
Lift appliance of the present invention comprises: towing machine, and it has the driving rope sheave; Suspension unit, it is around being hung on the driving rope sheave; Car, it is suspended the unit suspention in a side that drives rope sheave; Counterweight, it is suspended the unit suspention at the opposite side that drives rope sheave; Car guide rail, the lifting of its guiding car; Emergency braking device, it is installed on car, and by engaging with car guide rail car is promptly stopped; And the confining force additional device, it applies confining force less than the unbalance load between car and the counterweight in the side by counterweight that drives rope sheave to suspension unit when the work comfirmation test of carrying out emergency braking device.
The test method of lift appliance of the present invention comprises following operation: the suspension unit that suspention is had car and a counterweight applies confining force less than the unbalance load between car and the counterweight in the side by counterweight that drives rope sheave, makes the operation of towing machine to the direction running that car is risen simultaneously; Make the operation of the emergency braking device work that is installed on car; And make towing machine to the direction running that car is descended and to driving the operation whether rope sheave dallies and confirm.
Description of drawings
Fig. 1 is the lateral plan of expression embodiments of the present invention 1 described lift appliance.
Fig. 2 is the constructional drawing that amplifies the confining force additional device in the presentation graphs 1.
Fig. 3 is the lateral plan of expression embodiments of the present invention 2 described lift appliances.
Fig. 4 is the lateral plan that amplifies the counterweight in the presentation graphs 3.
Fig. 5 is the lateral plan of expression embodiments of the present invention 3 described lift appliances.
The specific embodiment
Below, with reference to accompanying drawing preferred implementation of the present invention is described.
Embodiment 1
Fig. 1 is the lateral plan of expression embodiments of the present invention 1 described lift appliance.In the drawings, be provided with machine room 2 on the top of hoistway 1.In machine room 2, be provided with support 3.At support 3 upper supports towing machine 4 is arranged.Towing machine 4 has the rope sheave 5 of driving and tractor main body 6.Tractor main body 6 has: the electrical motor that makes the towing machine that drives rope sheave 5 rotations; And the traction machine brake that the rotation that drives rope sheave 5 is braked.
At support 3 diversion sheave 7 is installed.Driving rope sheave 5 and diversion sheave 7 around many main ropes 8 that hang with as suspension unit.The part that is positioned at a side of leaning on counterweight 10 that drives rope sheave 5 of main rope 8 is around being hung on diversion sheave 7.As main rope 8, for example use the cross section to be the rope of circle or banded rope etc.
In the suspention of an end of main rope 8 car 9 is arranged.That is, car 9 is suspended in the hoistway 1 by main rope 8 in a side that drives rope sheave 5.In the other end of main rope 8 suspention counterweight 10 is arranged.That is, counterweight 10 is suspended in midair by main rope 8 at the opposite side that drives rope sheave 5.
In hoistway 1, be provided with a pair of car guide rail 11 of lifting of guiding car 9 and a pair of counterweight guide rail 12 of lifting of guiding counterweight 10.At car 9 emergency braking device 13 is installed, thereby this emergency braking device 13 engages with car guide rail 11 car 9 is promptly stopped.
At support 3 confining force additional device 14 is installed, when the work comfirmation test of carrying out emergency braking device 13,14 pairs of main ropes 8 of this confining force additional device apply predetermined confining force.The confining force that 14 pairs of main ropes 8 of confining force additional device apply is less than the unbalance load between car 9 and the counterweight 10.In addition, confining force additional device 14 applies confining force in the side by counterweight 10 that drives rope sheave 5 to main rope 8.In addition, under service (service) state of the lift appliance except that the work comfirmation test of emergency braking device 13 time, confining force additional device 14 is to main rope 8 additional confining forces.
Fig. 2 is the constructional drawing that amplifies the confining force additional device 14 in the presentation graphs 1.Be fixed with support unit 15 at support 3.Be fixed with connecting element 16 at support unit 15.Be fixed with and main rope 8 opposed fixation side friction means 17 at connecting element 16.In addition, be provided with a plurality of guide rod 18a, 18b in connecting element 16 settings.
Be supported with movable piece 19 at guide rod 18a, 18b.Movable piece 19 can along guide rod 18a, 18b with fixation side friction means 17 contact, the direction displacement that separates.At movable piece 19, be fixed with and main rope 8 opposed movable side friction means 20.At guide rod 18a, 18b, be provided with a plurality of confining force additional springs (compression spring) 21a, the 21b of movable piece 19 to the connecting element 16 side application of forces.
In addition, be provided with stopper unit (not shown) between connecting element 16 and movable piece 19, this stopper unit opposing confining force additional springs 21a, 21b remain the state that leaves from fixation side friction means 17 with movable side friction means 20.Confining force additional device 14 is brought into play function as additional brake as described below (wire stopper): this additional brake is when the work comfirmation test of emergency braking device 13, by removing stopper unit, come between fixation side friction means 17 and movable side friction means 20, directly to control (clamping) main rope 8, thereby main rope 8 is carried out friction braking, thus main rope 8 is applied confining force.
Like this, confining force additional device 14 when the work comfirmation test of emergency braking device 13 or running stop time work, and when common running or when promptly stopping, confining force additional device 14 is not worked, therefore the mechanism that need unclamp and work by electricity unlike common drg.Therefore, stopper unit can be made of the such simple mechanism of M/C.
Next, the method to the work comfirmation test of emergency braking device 13 describes.At first, remove stopper unit, utilize 14 pairs of main ropes 8 of confining force additional device to apply confining force.Under this state, to the direction that car 9 the is risen towing machine 4 that manually turns round.Thus, in the tension force of the part of leaning on counterweight 10 sides that is hung on the main rope 8 that drives rope sheave 5, reduce with the cooresponding tension force of confining force that produces by confining force additional device 14.
Then, make the rope catcher work of velocity limiter, thereby make emergency braking device 13 work.Then, make driving rope sheave 5 to the direction rotation that car 9 is descended.Then, whether dally and confirm driving rope sheave 5.
Under the situation of the work comfirmation test of having carried out emergency braking device 13 with such step, the tension force that drives the main rope 8 of rope sheave 5 parts reduces, and therefore can reduce the required motor torque that dallies, and can make towing machine 4 miniaturizations.
For example, when establishing confining force additional device 14 has unbalance load (do not have be generally under passenger's the state rated load 50%) in car 9 90% confining force, when if the weight of car 9 is 1.5 * CAP, W2=2.0CAP (omitting the weight of rope class), therefore the required torque of dallying is calculated by following formula, has been reduced to 77% with respect to the situation of not using confining force additional device 14.
Ts1’=D/2×W2’×(1-1/Γs)=D/2×(W2-0.5CAP×0.9)×(1-1/Γs)=0.607CAP×D
In addition,, then there is such possibility if confining force additional device 14 has the above confining force of unbalance load: though emergency braking device 13 normal operation not, the whereabouts that has also stoped car 9 by the confining force of confining force additional device 14.On the contrary, if the confining force of confining force additional device 14 is less than unbalance load, then counterweight 10 moves to descent direction when having discharged traction machine brake, thereby can prove that car 9 is not held power additional device 14 and keeps.
Embodiment 2
Next, Fig. 3 is the lateral plan of expression embodiments of the present invention 2 described lift appliances, and Fig. 4 is the lateral plan that amplifies the counterweight 10 in the presentation graphs 3.In this example, in the upper and lower of counterweight 10 confining force additional device 22 is installed.The structure of each confining force additional device 22 is identical with the confining force additional device 14 of Fig. 2, but connecting element 16 is fixed in counterweight 10.And, fixation side friction means 17 and movable side friction means 20 clamping counterweight guide rails 12.
The confining force additional device 22 of embodiment 2 is clamping counterweight guide rail 12 when the work comfirmation test of carrying out emergency braking device 13, thereby counterweight 10 is carried out friction braking, thus, by a side of counterweight 10 main rope 8 is applied confining force less than unbalance load what drive rope sheave 5.Other structure is identical with embodiment 1 with test method.
By such structure and test method, also can reduce to drive the tension force of the main rope 8 of rope sheave 5 parts, therefore can reduce the required motor torque that dallies, can make towing machine 4 miniaturizations.
Embodiment 3
Next, Fig. 5 is the lateral plan of expression embodiments of the present invention 3 described lift appliances.In the drawings, be provided with confining force additional device 23 at diversion sheave 7.Confining force additional device 23 is braked the rotation of diversion sheave 7 when the work comfirmation test of carrying out emergency braking device 13, thus, by a side of counterweight 10 main rope 8 is applied confining force less than unbalance load what drive rope sheave 5.Other structure is identical with embodiment 1 with test method.
By such structure and test method, also can reduce to drive the tension force of the main rope 8 of rope sheave 5 parts, therefore can reduce the required motor torque that dallies, can make towing machine 4 miniaturizations.
In addition, have such situation: the winding angle of main rope 8 on diversion sheave 7 is very little, both just the rotation of diversion sheave 7 is braked, and main rope 8 also can skid, thereby can't obtain required effect.Under these circumstances, can utilize high friction material to constitute the groove face of the main rope 8 of insertion of diversion sheave 7.In addition, also can directly brake the part around hanging main rope 8 of diversion sheave 7.That is, also can and diversion sheave 7 between clamping master rope 8.In addition, also can be when the work comfirmation test of carrying out emergency braking device 13, at the periphery around the part that is hung on diversion sheave 7 of the main rope 8 high friction material of reeling.
In addition, in above-mentioned example, show the lift appliance of 1: 1 baudrier, but be not limited thereto, for example the present invention also can be applied in the lift appliance of 2: 1 baudriers.

Claims (8)

1. a lift appliance is characterized in that,
Described lift appliance comprises:
Towing machine, it has the driving rope sheave;
Suspension unit, it is around being hung on described driving rope sheave;
Car, its side at described driving rope sheave is suspended in midair by described suspension unit;
Counterweight, its opposite side at described driving rope sheave is suspended in midair by described suspension unit;
Car guide rail, it guides the lifting of described car;
Emergency braking device, it is installed on described car, and by engaging with described car guide rail described car is promptly stopped; And
The confining force additional device, it applies confining force less than the unbalance load between described car and the described counterweight at described driving rope sheave by a side of described counterweight to described suspension unit when the work comfirmation test of carrying out described emergency braking device.
2. lift appliance according to claim 1, wherein,
Described confining force additional device carries out friction braking and comes described suspension unit is applied confining force by directly controlling described suspension unit.
3. lift appliance according to claim 1, wherein,
Described lift appliance also comprises the counterweight guide rail, the lifting of the described counterweight of this counterweight rail guidance,
Described confining force additional device is installed on described counterweight, and green phase carries out friction braking for described counterweight guide rail to described counterweight and comes described suspension unit is applied confining force.
4. lift appliance according to claim 1, wherein,
Described lift appliance also comprises diversion sheave, in the part of this diversion sheave around a side of leaning on described counterweight that hangs with the described driving rope sheave of being positioned at of described suspension unit,
Described confining force additional device applies confining force by the rotation of described diversion sheave is braked to described suspension unit.
5. lift appliance according to claim 4, wherein,
The groove face around hanging described suspension unit of described diversion sheave is made of high friction material.
6. lift appliance according to claim 4, wherein,
Described confining force additional device and described diversion sheave between the described suspension unit of clamping.
7. lift appliance according to claim 4, wherein,
Described lift appliance also comprises high friction material, when the work comfirmation test of carrying out described emergency braking device, this high friction material be wound in described suspension unit around the part that is hung on described diversion sheave.
8. the test method of a lift appliance is characterized in that,
The test method of described lift appliance comprises following operation:
The suspension unit that suspention is had car and a counterweight applies confining force less than the unbalance load between described car and the described counterweight, the operation that towing machine is turned round to the direction that described car is risen in the side by described counterweight that drives rope sheave;
Make the operation of the emergency braking device work that is installed on described car; And
Make described towing machine to direction running that described car is descended and the operation whether described driving rope sheave is dallied and confirm.
CN2008801259976A 2008-04-08 2008-04-08 Elevator device and method of testing the same Active CN101932520B (en)

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PCT/JP2008/056928 WO2009125473A1 (en) 2008-04-08 2008-04-08 Elevator device and method of testing the same

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CN101932520A true CN101932520A (en) 2010-12-29
CN101932520B CN101932520B (en) 2012-10-03

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JP (1) JP5174894B2 (en)
KR (1) KR101199046B1 (en)
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CN104671022A (en) * 2013-11-26 2015-06-03 三菱电机株式会社 Elevator control device and elevator control method
CN111479766A (en) * 2018-04-10 2020-07-31 三菱电机大楼技术服务株式会社 Elevator control device for enabling elevator car to function as scaffold
CN112777446A (en) * 2019-11-08 2021-05-11 通力股份公司 Elevator with a movable elevator car

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WO2018092308A1 (en) * 2016-11-21 2018-05-24 三菱電機株式会社 Inspection method for elevator emergency stop device
CN107473037A (en) * 2017-08-01 2017-12-15 营口市特种设备监督检验所 Elevator governor detects corollary equipment
KR102458398B1 (en) * 2018-05-09 2022-10-24 미쓰비시덴키 가부시키가이샤 Test method of elevator device and emergency stop device
JP2021134042A (en) * 2020-02-27 2021-09-13 株式会社日立製作所 Elevator emergency stop test method and elevator emergency stop test power supply

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CN104671022B (en) * 2013-11-26 2017-04-12 三菱电机株式会社 Elevator control device and elevator control method
CN111479766A (en) * 2018-04-10 2020-07-31 三菱电机大楼技术服务株式会社 Elevator control device for enabling elevator car to function as scaffold
CN112777446A (en) * 2019-11-08 2021-05-11 通力股份公司 Elevator with a movable elevator car

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CN101932520B (en) 2012-10-03
WO2009125473A1 (en) 2009-10-15
KR20100094594A (en) 2010-08-26
EP2261161A1 (en) 2010-12-15
KR101199046B1 (en) 2012-11-07
EP2261161B1 (en) 2015-01-21
JP5174894B2 (en) 2013-04-03
EP2261161A4 (en) 2014-08-06
JPWO2009125473A1 (en) 2011-07-28

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