CN102196983A - Elevator - Google Patents
Elevator Download PDFInfo
- Publication number
- CN102196983A CN102196983A CN200980142954.3A CN200980142954A CN102196983A CN 102196983 A CN102196983 A CN 102196983A CN 200980142954 A CN200980142954 A CN 200980142954A CN 102196983 A CN102196983 A CN 102196983A
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- China
- Prior art keywords
- rope
- brake
- speed
- elevator
- sheave
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
An elevator, wherein damage on the surface of a rope is reduced, the diameter of a hoist sheave of the elevator is reduced, and the elevator is compact in size and occupies a reduced space. An elevator is provided with an elevator car (1) lifted and lowered by winding up and down a rope (6) by a sheave (2), a rotational speed detection means for the sheave (2), a brake device for applying braking torque to the sheave (2) and activated when the speed of the rope (6) is higher than a predetermined level, and a calculation section for calculating the slip speed between the rope (6) and the sheave (2) on the basis of the rotational speed of the sheave (2) and the speed of the rope (6). Braking torque of the brake device after the brake device is activated is determined on the basis of the value of the calculated slip speed.
Description
Technical field
The present invention relates to a kind of elevator, the elevator that is particularly useful for when emergency situation has taken place or by brake equipment lift car is forcibly stopped during maintenance with brake equipment.
The scape technology
In the inspection of elevator, as emergency braking test, the unusual speedup of lift car is detected, use the brake equipment that is arranged on the winch that lift car is stopped.
As prior art, a kind of scheme is for example disclosed in patent documentation 1, its in order to reduce promptly to stop to the impact of lift car, and shorten the stopping distance of lift car, when carrying out emergency braking, after the driving rope sheave has been applied whole braking forces, apply than the braking force a little less than whole braking forces driving rope sheave, and during less than specified value, apply whole braking forces to driving rope sheave once more at the absolute value of the acceleration/accel of lift car.
In addition, a kind of elevator that adopts the resin-coating rope as main rope is for example disclosed in patent documentation 2, in this elevator, the deceleration/decel of the lift car in order will promptly to stop the time or when stopping fast being controlled to be suitable deceleration value, when electro-magnetic braking device is played a role, the resistance that the resistance value that is connected in parallel on the electromagnetic braking coil is less makes the rising of braking force become slow thus.Formerly the technical literature patent documentation 1
The patent documentation 1 open patent 2006-8333 of the Japan communique patent documentation 2 open patent 2003-221171 of Japan communiques
Summary of the invention
In above-mentioned prior art, all only consideration has been made in the impact that stops that how relaxing lift car, and made consideration how preventing that the rope surface from sustaining damage.That is to say, when the many parts of the damage location and the number of pass times of rope sheave and pulley etc. of rope are consistent, cause damaging further aggravation possibly.In addition, when using the rope of making by the high material of flexibilities such as fiber and band to reduce the diameter of winch, need further take measures to prevent that the rope surface from sustaining damage.
The objective of the invention is to solve existing problem in the above-mentioned prior art, reduce the damage on rope surface.In addition, other purposes of the present invention are to provide a kind of elevator, and it can reduce the diameter of the winch rope sheave of elevator, realize that the elevator miniaturization is to save the space.Solution
In order to realize above-mentioned problem, the invention provides a kind of elevator, it has the lift car that carries out lifting by rope sheave traction rope, the rotative speed detecting unit of described rope sheave, brake equipment to described rope sheave brake activation moment, the described brake equipment that this elevator moves when further having speed at described rope greater than specified value and according to rotative speed and the described rope of speed computing of described rope and the arithmetic section of the slip speed between the described rope sheave of described rope sheave, in described elevator, decide lock torque after the described brake equipment action according to the value of the described slip speed that calculates.The invention effect
According to the present invention, the speed because of rope makes brake equipment action greater than specified value after, decide lock torque according to the value of the slip speed between rope and the rope sheave, thus can make the distance minimization of skidding, and can reduce the damage on rope surface.Below by accompanying drawing and embodiments of the invention other purposes of the present invention, feature and advantage are elaborated.
Description of drawings
Fig. 1 is the lateral plan of the related lift appliance of expression one embodiment of the present invention.Fig. 2 is the lateral plan of the related lift appliance of expression other embodiments of the present invention.The diagram of curves that the time dependent of each value when Fig. 3 is the emergency braking of each embodiment of expression changes.Fig. 4 is the diagram of curves of the relation between expression slip speed and the friction coefficient.Fig. 5 is the front view of the related winch of expression one embodiment.Fig. 6 is the diagram of curves that the time dependent of each value of the drg glancing impact in expression one embodiment changes.
The specific embodiment
Elevator has makes lift car carry out governor gear, the brake equipment of lift car being braked according to the signal of governor gear and the emergency braking apparatus that is used to control guide rail that is installed in the lift car part of speedup situation of winch, the lift car when detecting the unusual state of affairs and taking place of lifting.
When elevator is checked,, implement the emergency braking test in order to confirm the action of emergency braking.So-called emergency braking is meant that the unusual speedup to lift car detects, and uses the brake equipment that is arranged on the winch that lift car is forcibly stopped when detecting the unusual speedup of lift car.At this moment, may cause because of braking skidding occurring between rope and the rope sheave, the surface of rope is sustained damage.When the more part of the damage location and the number of pass times of rope sheave and pulley is consistent, may cause damaging further aggravation.
In recent years, be applied,, need have further reduced the skidding between rope and the rope sheave for the surface that prevents rope sustains damage by the technology of using the rope of making by the high material of flexibilities such as fiber or band to reduce the winch diameter.
Followingly one embodiment of the present invention is described with reference to accompanying drawing.Fig. 1 represents the integral structure of lift appliance.The lift car 1 that the confession passenger takes is by carrying out lifting with winch 7 traction ropes 6.The coder 9 that winch 7 has the brake wheel that rotates synchronously with rope sheave 2,1 group of brake equipment and detects the rotation amount of rope sheave.Brake equipment has brake shoe 3a, 3b, is used to push the retarding spring 31a of these brake shoes, 31b and make this retarding spring leave the magnet coil 33a of brake surface, 33b.
When lift car was in halted state, to magnet coil 33a, 33b did not switch on, and brake shoe 3a, 3b are pressed against on the brake wheel under the effect of 31b at retarding spring 31a, and therefore, rope sheave 2 does not rotate, and lift car is in halted state.
When lift car 1 beginning lifting, make electric current flow through magnet coil 33a, 33b makes brake shoe 3a thus, and 3b leaves brake surface.This fundamental operation in the disc type brake mode that combines by brake disc and magnet coil too.
When unusual speedup has taken place lift car 1,, lift car 1 is stopped as soon as possible and safely in order to ensure passenger's safety.As the device that detects this abnormal speed, be provided with governor sheave 4 in hoist trunk, it has with lift car 1 bonded assembly speed controller rope 5 and is wound with the governor sheave of speed controller rope 5 and detects the not shown trigger mechanism whether this pulley surpasses predetermined rotational speed.
After detecting the abnormal speed of lift car, governor gear disconnects the energising of magnet coil, and with brake shoe 3a, 3b is forcibly by being pressed on the brake surface.At this moment, for degree of will speed up is controlled at below the certain value, brake equipment is moved.
Friction between rope 6 and rope sheave 2 hour because rope 6 skids on rope sheave 2, thus can the formation impression on the strand surface of rope, thereby cause rope 6 surfaces to sustain damage.Especially, the speed of lift car 1 is big more, and the degree of damage is also serious more.Therefore, carrying out normally in service behind the emergency braking, if the damaged portion of rope 6 by the frequency height of rope sheave 2, then the degree of injury of damaged portion may further aggravate.
The damage on rope 6 surfaces not only can appear on the steel wire cable, if what use is to adopt the strand of resin-coating ropes such as polyurethane and rubber and strand group and when the banded rope made and twisted rope, especially under the low condition of resin hardness, resin surface more likely is subjected to big damage.
The speed controller rope 5 that the speed of rope 6 is synchronized with the movement by detection and lift car 1 is that the output of governor sheave 4 detects.Simultaneously, detect the rotation amount of rope sheave 2 according to rotative speed with rope sheave 2 direct coupled coders 9.According to above-mentioned two values, can obtain relative slip speed Δ V between rope 6 and the rope sheave 2 by formula rs * ω s-re * ω e.In the formula, rs and re represent the radius of rope sheave 2 and governor sheave respectively, and ω s and ω e represent the spin velocity of rope sheave 2 and governor sheave respectively.
When brake equipment carried out emergency braking, in order to reduce above-mentioned relative velocity, just in order to reduce slip speed, the time or the stage that can change the energising disconnection (brake activation) that makes magnet coil changed lock torque (perhaps intermittent).Be specifically, according to the speed of the rotative speed and the rope of rope sheave, by assign to slip speed between computing rope and the rope sheave of operational part, and according to the lock torque after the action of operation values decision brake equipment.
During greater than specified value, reduce lock torque in slip speed, perhaps discharge (releasing) braking by magnet coil is switched on.After this, when slip speed becomes less than specified value, increase lock torque, perhaps disconnect (opening) and brake by the energising that makes magnet coil.
If the stage applies big lock torque suddenly in the early stage, then rope sheave 2 stops fast, likens with automobile, the state that tire is lockable occurs.At this moment, rope 6 skids on rope sheave 2.By lentamente or the interim lock torque that applies rope sheave 2 (intermittence), can reduce skidding of rope 6.
The signal output that is installed in the coder on the governor sheave 4 and is installed in the coder 9 on the winch is by being pulse output, and therefore needing this pulse output transform is continuous signal.In addition, because the diameter of the diameter of rope sheave 2 and governor sheave 4 is different, thus both are transformed to slip speed, and the turnoff time of control energising in controller 10 etc.
Followingly other embodiment is described with reference to Fig. 2.The speed detector 19 of the speed sensor etc. of Doppler type for example is installed on lift car 1.When adopting the detector of aforesaid way, do not need to be provided with the speed controller rope 5 that is synchronized with the movement with lift car 1, thereby can dwindle the sectional area of elevator lifting channel.In addition, when carrying out emergency braking,, then can't export the signal of control usefulness,, in lift car 1, install urgent with power supply 32 in order to prevent above-mentioned situation if the power supply of speed detector 19 is cut off.When adopting this structure, also the same with first embodiment, compare the lock torque that comes the control brake device with computing by output to the coder 9 of the speed detector 19 of lift car 1 and winch 7.
More than the control situation of lock torque during to emergency braking carried out casehistory, and under the operational mode of maintenance operation of lift car 1 being braked etc., also have the effect that can prevent that rope 6 from sustaining damage because of skidding by brake equipment.
Under normal conditions, in elevator, for lift car 1 is accurately rested on the floor of building, detect the shield (by the expression of 17 among Fig. 1) that is arranged on the lift car side rails 15a by the position detector (by the expression of 16 among Fig. 1) that is arranged on the lift car 1, winch 7 is controlled with this.Then do not need to be provided with shield in the present embodiment,, lift car 1 is rested on the height of floor by using encoder information and these two information of the slip speed between rope and the rope sheave of electrical motor.
Fig. 3 represents the waveform that the time dependent of each signal of the enforcement emergency braking front and back among each embodiment changes.Fig. 3 represents is maskant unbalance between lift car 1 and the counterbalanced weight 20 situation when big.
The signal a of the top represents the energizing signal from the emergency braking of governor gear.In addition, each bar curve from top to bottom respectively expression be applied to slip speed between electric current, rope sheave speed, elevator car speed and rope and the rope sheave on the drg.After receiving the energizing signal of emergency braking, the energising of motor current and brake equipment is disconnected.Because two brake equipments are arranged, thus the disconnection (disconnecting the electric current that is applied) of the energising of each brake equipment between the time setting-up time poor (b1, b2).After the energising of this drg is disconnected, under the effect of retarding spring, on rope sheave 2, produce lock torque, make the speed of rope sheave 2 reduce.Wherein, triggering from emergency braking in the La interval of starting at, the speed of rope sheave 2 and lift car 1 increases, and its reason is under the unbalanced influence between lift car 1 and the counterbalanced weight 20, and lift car 1 carries out the movement of falling object.
Control by the braking time to brake equipment, the waveform (c1) when not controlling is compared, rope sheave 2 stop speed becoming slowly (c2).Under situation about brake equipment not being controlled, after rope sheave 2 stopped, rope 6 still skidded on rope sheave 2, to the last stops.
The curve of below represents that the velocity contrast between rope sheave 2 and the lift car 1 is a slip speed.Slip speed when this curve is represented brake equipment not to be controlled by brake equipment is controlled, can be controlled to the slip speed between rope sheave 2 and the rope 6 (the perhaps amount of skidding) less than specified value, perhaps is controlled to not produce and skids.
Fig. 4 is the figure of the universal relation between expression slip speed and the friction coefficient.In slip speed hour, friction coefficient is little, and along with slip speed increases, friction coefficient also increases thereupon.Therefore, by interim ground brake equipment is controlled, reduced the relative velocity between rope sheave 2 and the rope 6, both friction coefficient can be remained on the high friction coefficient thus, making skids is difficult to take place.This principle is identical with the ABS control and pump liter braking (pumping brake) operation of automobile.
Fig. 5 represents an example of winch.This winch is the outer-rotor type winch, and its rope sheave 2 constitutes with rotor 21 one, and the outer peripheral face of rotor 21 is used as brake surface.Brake shoe 3a, 3b contacts with this drg brake surface 22, and to rope sheave 2 brake activation moments.Owing to be provided with one group of magnet coil 33a, 33b is so can control independently respectively by 2 power circuits.
Fig. 6 represents 2 magnet coil 33a, an example of the control method of 33b.2 magnet coil 33a, the coil-winding part 34a of 33b, the value of the coil turn of 34b is different.The curve table timberline circle number of turn situation more after a little while of top, the curve table timberline circle number of turn situation more for a long time of below, the number of turn is many more, and time constant is big more, and it is long more to discharge required time Δ T1.Therefore, can disconnect time set time difference till the release play 2 coils finishes to energising.
In addition, by with drg brake surface 22 and brake shoe 3a, the gap between the 3b ( δ 1,82 among Fig. 5) is set at different values, can also be to magnet coil 33a, and the time point setting-up time difference Δ T2 that the release of 33b begins.Thus,, also can change 2 brake shoe 3a even the turnoff time of energising is identical, the time that 3b and brake surface (among Fig. 5 22) contact, thus can change lock torque.
As mentioned above, on one side owing to can observe relative slip speed between rope 6 and the rope sheave 2, Yi Bian make the turnoff time realization optimization of energising, so rope sheave 2 is stopped lentamente.Thus, can reduce the slip speed (perhaps shortening the distance of skidding) between rope 6 and the rope sheave 2, thus the damage that can alleviate rope.More than embodiment is illustrated, but the present invention is not limited to the foregoing description, the technical personnel of the industry can carry out various changes and correction in the scope that spirit of the present invention and claims are put down in writing.
Symbol description
1 lift car, 2 rope sheave 3a, 3b brake shoe 4 governor sheaves 5 speed controller ropes 6 ropes 7 hoist engine 8a, 8b balance weight side rails 9 encoders 10 controller 11a, 11b buffer 12 brake drive circuits 13 power inverters 14 power supply 15a, 15b lift car side rails 16 position detectors 17 shields 18 rotation detectors 19 speed detectors 20 balance weights 21 rotors 22 brake braking surface 23a, 23b brake arm 25a, 25b brake arm fulcrum 31a, 31b tripping spring 32 is promptly used supply unit 33a, 33b solenoid 34a, the time difference that the time difference Δ T2 that gap (left side) δ 2 braking surfaces between 34b winding part δ 1 braking surface and the brake shoe and gap (right side) the Δ T1 between the brake shoe produce by the change coil turn produces by changing the brake shoe gap
Claims (according to the modification of the 19th of treaty)
1. (revise back) a kind of elevator, its have by rope sheave traction rope carry out the rotative speed detecting unit of the lift car of lifting, described rope sheave, to the brake equipment of described rope sheave brake activation moment, described elevator is characterised in that,
The described brake equipment that moves when further having speed at described rope and according to rotative speed and the described rope of speed computing of described rope and the arithmetic section of the slip speed between the described rope sheave of described rope sheave greater than specified value,
The value of the described slip speed that described elevator basis calculates decides the lock torque after the described brake equipment action, and interim ground brake activation moment, make after described brake equipment action, under the situation of described slip speed that calculates greater than specified value, reduce the lock torque of described brake equipment, afterwards, under the situation of described slip speed that calculates, increase the lock torque of described brake equipment less than specified value.
2. (revise afterwards) elevator as claimed in claim 1, it is characterized in that, described brake equipment is played a role, make after described brake equipment action, under the situation of described slip speed that calculates, make described brake equipment open, afterwards greater than specified value, under the situation of described slip speed that calculates, described brake equipment is played a role less than specified value.
3. (revise afterwards) elevator as claimed in claim 1, it is characterized in that, described brake equipment has 2 brake shoes and magnet coil, described 2 brake shoes are by contacting to described rope sheave brake activation moment with brake surface, described magnet coil produces lock torque by energising is disconnected, thus each described brake shoe is driven, each described magnet coil can be controlled independently, and is can setting-up time between the turnoff time of described energising poor.
4. elevator as claimed in claim 1, it is characterized in that, have the governor sheave of being full of this speed controller rope with synchronization-moving speed controller rope of described lift car and volume, the speed of described rope detects by the rotative speed that detects described governor sheave.
5. elevator as claimed in claim 1 is characterized in that the speed of described rope detects by the speed that detects described lift car.
6. (revise afterwards) elevator as claimed in claim 1, it is characterized in that, described brake equipment has 2 brake shoes and magnet coil, described 2 brake shoes are by contacting to described rope sheave brake activation moment with brake surface, described magnet coil produces lock torque by energising is disconnected, thus each described brake shoe is driven, described brake surface is set to different values with gap between each described brake shoe, even make that the turnoff time of described energising is identical, also can change the time that each described brake shoe contacts with described brake surface.
7. (deletion)
8. (deletion)
Claims (8)
1. elevator, its have by rope sheave traction rope carry out the rotative speed detecting unit of the lift car of lifting, described rope sheave, to the brake equipment of described rope sheave brake activation moment, described elevator is characterised in that,
The described brake equipment that moves when further having speed at described rope and according to the arithmetic section of the relative slip speed between the described rope of speed computing of the rotative speed of described rope sheave and described rope and the described rope sheave greater than specified value,
The value of the described slip speed that described elevator basis calculates decides the lock torque after the described brake equipment action.
2. elevator as claimed in claim 1 is characterized in that, after the action of described brake equipment, when the described slip speed that calculates during greater than specified value, reduces the lock torque of described brake equipment.
3. elevator as claimed in claim 1 is characterized in that, after the action of described brake equipment, when the described slip speed that calculates during greater than specified value, reduces the lock torque of described brake equipment by the braking of removing described brake equipment.
4. elevator as claimed in claim 1, it is characterized in that, have and synchronization-moving speed controller rope of described lift car and the governor sheave that is wound with this speed controller rope, the speed of described rope detects by the rotative speed that detects described governor sheave.
5. elevator as claimed in claim 1 is characterized in that the speed of described rope detects by the speed that detects described lift car.
6. elevator as claimed in claim 1, it is characterized in that, described brake equipment has 2 brake shoes and magnet coil, described 2 brake shoes are by contacting to described rope sheave brake activation moment with brake surface, described magnet coil drives respectively each described brake shoe, has the time difference between the turnoff time of the energising of each described magnet coil.
7. elevator as claimed in claim 1, it is characterized in that, described brake equipment has 2 brake shoes and magnet coil, described 2 brake shoes are by contacting to described rope sheave brake activation moment with brake surface, described magnet coil drives respectively each described brake shoe, and described brake surface is set to different values with gap between each described brake shoe.
8. elevator as claimed in claim 1 is characterized in that, the lock torque after the described brake equipment action applies interimly.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-280680 | 2008-10-31 | ||
| JP2008280680A JP5369616B2 (en) | 2008-10-31 | 2008-10-31 | Elevator |
| PCT/JP2009/068337 WO2010050434A1 (en) | 2008-10-31 | 2009-10-26 | Elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102196983A true CN102196983A (en) | 2011-09-21 |
Family
ID=42128796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980142954.3A Pending CN102196983A (en) | 2008-10-31 | 2009-10-26 | Elevator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5369616B2 (en) |
| CN (1) | CN102196983A (en) |
| WO (1) | WO2010050434A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515050A (en) * | 2011-12-22 | 2012-06-27 | 广州市特种机电设备检测研究院 | Moment monitoring device for tractor brake |
| CN102795524A (en) * | 2012-07-27 | 2012-11-28 | 石家庄五龙制动器股份有限公司 | ABS brake control circuit of elevator brake system |
| CN107555276A (en) * | 2017-10-19 | 2018-01-09 | 余志林 | A kind of elevator brake method for testing performance and device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5919856B2 (en) * | 2012-02-03 | 2016-05-18 | 三菱電機株式会社 | Braking device for elevator hoisting machine |
| US9791093B2 (en) * | 2013-10-11 | 2017-10-17 | Canon Finetech Nisca Inc. | Load support mechanism |
| CN104564925B (en) * | 2013-10-11 | 2018-04-20 | 佳能精技立志凯株式会社 | Arrestment mechanism and load bearing mechanism |
| JP6271956B2 (en) * | 2013-11-12 | 2018-01-31 | 株式会社日立製作所 | elevator |
| EP2913287B1 (en) * | 2014-02-26 | 2018-01-03 | Otis Elevator Company | Governor for controlling the speed of a hoisted object relative to a guide member |
| JP6592376B2 (en) * | 2016-02-26 | 2019-10-16 | 株式会社日立製作所 | Elevator and rescue operation method |
| CN109399415B (en) * | 2017-08-16 | 2023-10-24 | 迈格钠磁动力股份有限公司 | Permanent-magnet retarding safety protection device for elevator |
| WO2020261390A1 (en) | 2019-06-25 | 2020-12-30 | 三菱電機株式会社 | Elevator device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5427154A (en) * | 1977-07-30 | 1979-03-01 | Toshiba Corp | Brake system for elevator |
| JPH07102949B2 (en) * | 1989-09-28 | 1995-11-08 | 三菱電機株式会社 | Elevator braking system |
| JPH0543150A (en) * | 1991-08-20 | 1993-02-23 | Hitachi Ltd | Elevator |
| JPH08333058A (en) * | 1995-06-08 | 1996-12-17 | Hitachi Ltd | Elevator device |
| JPH107350A (en) * | 1996-06-24 | 1998-01-13 | Toshiba Corp | Safety device of elevator |
| JP2000110868A (en) * | 1998-10-05 | 2000-04-18 | Mitsubishi Electric Corp | Brake device and elevator device using it |
| JP4267335B2 (en) * | 2003-01-30 | 2009-05-27 | 三菱電機株式会社 | Elevator braking control device |
| JP4689337B2 (en) * | 2005-04-26 | 2011-05-25 | 三菱電機株式会社 | Elevator equipment |
| WO2007046129A1 (en) * | 2005-10-17 | 2007-04-26 | Mitsubishi Denki Kabushiki Kaisha | Elevator device |
-
2008
- 2008-10-31 JP JP2008280680A patent/JP5369616B2/en active Active
-
2009
- 2009-10-26 CN CN200980142954.3A patent/CN102196983A/en active Pending
- 2009-10-26 WO PCT/JP2009/068337 patent/WO2010050434A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515050A (en) * | 2011-12-22 | 2012-06-27 | 广州市特种机电设备检测研究院 | Moment monitoring device for tractor brake |
| CN102795524A (en) * | 2012-07-27 | 2012-11-28 | 石家庄五龙制动器股份有限公司 | ABS brake control circuit of elevator brake system |
| CN102795524B (en) * | 2012-07-27 | 2014-07-23 | 石家庄五龙制动器股份有限公司 | ABS brake control circuit of elevator brake system |
| CN107555276A (en) * | 2017-10-19 | 2018-01-09 | 余志林 | A kind of elevator brake method for testing performance and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5369616B2 (en) | 2013-12-18 |
| WO2010050434A1 (en) | 2010-05-06 |
| JP2010105795A (en) | 2010-05-13 |
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