CN1024778C - Elevator control apparatus - Google Patents
Elevator control apparatus Download PDFInfo
- Publication number
- CN1024778C CN1024778C CN92104238A CN92104238A CN1024778C CN 1024778 C CN1024778 C CN 1024778C CN 92104238 A CN92104238 A CN 92104238A CN 92104238 A CN92104238 A CN 92104238A CN 1024778 C CN1024778 C CN 1024778C
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- China
- Prior art keywords
- lock torque
- car
- action command
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- identification
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- Expired - Lifetime
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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
Abstract
This invention aims to adjust brake torque without using a weight, and moreover make this adjustment work simplified and performed accurately and efficiently. A brake actuation command is outputted with a brake actuation command generation means 24 when an elevator cage 13 travels and its reaching a given position in an elevating path is confirmed with a brake torque adjustment mode setting means 21 and a cage position recognizing means 22. Brake torque is adjusted with a calculated value as a basis by calculating then brake torque with a brake torque calculating means 25 by signals from a cage speed detection means 23 and the brake actuation command generation means 24.
Description
The present invention relates to elevator control apparatus, relate in particular to the elevator control apparatus that to adjust lock torque.
As existing this elevator control apparatus, can enumerate the spy and open the example that discloses in the flat 1-197290 communique.
Fig. 9 be show existing elevator be assembled into the front elevation of a single-piece magnet stopper with winch.
Among the figure, the 50th, a pair of brake rod is pressed to the direction of arrow A by spring 51 all the time with it.The 52nd, be installed in the slipper on the brake rod 50 respectively, the 53rd, the brake wheel that rotates with an electrical motor (not shown) integral body of formation, the 54th, the direct connection shaft of motor, brake wheel 53 is fixed in this rotating shaft 54.The 55th, slightly L-shaped cam, it is along with brake rod 50 rotates to the arrow B direction towards moving of arrow A direction.The 56th, touch the plunger of the front end of cam 55, the 57th, when having power supply to supply with, attract unshakable in one's determination 56 and the restraining coil that makes it to move.
In the magnet stopper of this structure, brake rod 50 is pressed to the arrow A direction all the time by spring 51.Like this, slipper 52 maintains brake wheel 53, prevents its rotation.In this state, cam 55 rotates in the direction of arrow B, and iron core 56 is pushed to.On the other hand, supply with in case restraining coil 57 obtains power supply, unshakable in one's determination 56 just are braked coil 57 attractions and descend.Cam 55 is followed its decline and is rotated in the direction of arrow C, and brake rod 50 is also resisted the firmly compressing power of spring 51, rotates towards the direction of arrow D.And then because the rotation of brake rod 50, slipper 52 is decontroled brake wheel 53.Consequently, rotating shaft 54 makes suitably lifting of elevator by direct motor drive.
From guaranteeing the angle of elevator safety, this stop mechanism is must be obligato, and when elevator stopped, total weight was added on the drg.At this moment, if the mounting torque deficiency of drg, drg can skid, and this is breakneck.And in contrast, when mounting torque is excessive, when elevator emergency stops, shake very greatly, also be dangerous.
Therefore, be necessary the mounting torque (hereinafter to be referred as " lock torque ") of drg is adjusted to appropriate value.Method of adjustment in the past is, loads about 125% the foundary weight that is equivalent to car load, adjusts the compressing power of spring 51 in the Machine Room, makes drg non-slip.
In above-mentioned existing elevator control apparatus, adopt magnet stopper as stop mechanism, in the method for adjustment of its lock torque, be necessary to load the foundary weight of about 125% car load.And, after finishing adjustment, must shed this foundary weight again, need expensive time and labor.
In addition, in such method of adjustment, just with brake acjustment to non-slip degree, drg can fastening mistake strong or fastening excessively a little less than, be adjusted at not a duck soup in certain benchmark to lock torque.
Therefore, the present invention is as problem, promptly provides not use foundary weight and can adjust lock torque, and can simplify and adjust operation, correctly and efficiently elevator control apparatus.
First kind of elevator control apparatus of the present invention comprises: drg action command generating means, it relies on the lock torque of setting lock torque adjustment mode to adjust the car position means of identification of mode setting device and the above-mentioned elevator car position of identification, when confirming that elevator cage operation reaches in the access trunk desired location, the output brake action command; Detect the car speed detecting device of above-mentioned elevator car speed; Dependence goes out the lock torque computer device of lock torque from the calculated signals of above-mentioned car speed detecting device and drg action command generating means.
Second kind of elevator control apparatus of the present invention comprises: drg action command generating means, it relies on sets the car position means of identification that lock torque is adjusted the lock torque adjustment mode setting device of mode and discerned above-mentioned elevator car position, when confirming that elevator cage operation reaches in the access trunk desired location, the output brake action command; Detect the car speed detecting device of above-mentioned elevator car speed; According to the lock torque computer device that goes out lock torque from the calculated signals of above-mentioned car speed detecting device and drg action command generating means; According to the signal of above-mentioned lock torque computer device, lock torque is adjusted to lock torque setting device within the preset range.
In first kind of device of the present invention, rely on lock torque to adjust mode setting device and car position means of identification, when confirming that elevator cage operation reaches in the access trunk desired location, drg action command generating means output brake action command, simultaneously, the lock torque computer device is according to the signal of car speed detecting device and drg action command generating means, calculate lock torque at this moment, therefore, lock torque suitably can be adjusted to the computing value of lock torque, need not to load foundary weight, just can suitably and correctly adjust lock torque.
In second kind of device of the present invention, when adjusting mode setting device and car position means of identification and confirm that elevator cage operation reaches in the access trunk desired location by lock torque, drg action command generating means output brake action command, simultaneously, the lock torque computer device is according to the signal from car speed detecting device and drg action command generating means, calculate lock torque at this moment, adjust lock torque by the lock torque setting device, make the aforementioned calculation value enter predetermined scope, therefore, need not to load foundary weight and just can automatically adjust lock torque.
Fig. 1 is the entire system constructional drawing that shows an embodiment of first kind of elevator control apparatus of the present invention.
Fig. 2 is the block scheme of lock torque arithmetical organ that shows an embodiment of first kind of elevator control apparatus of the present invention.
Fig. 3 is the diagram of circuit that the lock torque computing of an embodiment of first kind of elevator control apparatus of demonstration the present invention is moved.
Fig. 4 is the characteristic map that replenishes the diagram of circuit of Fig. 3.
Fig. 5 is the constructional drawing of entire system that shows an embodiment of second kind of elevator control apparatus of the present invention.
Fig. 6 is the front elevation of the magnet stopper of an embodiment of second kind of elevator control apparatus of the present invention.
Fig. 7 is the block scheme of the lock torque arithmetical organ of an embodiment of second kind of elevator control apparatus of the present invention.
Fig. 8 is the diagram of circuit that embodiment of second kind of elevator control apparatus of the present invention carries out lock torque computing action and lock torque adjustment action.
Fig. 9 is the front elevation of existing magnet stopper.
Below describe with regard to each embodiment of the present invention.
Fig. 1 is the entire system constructional drawing of an embodiment of first kind of elevator control apparatus of the present invention.
Among the figure, the 1st, the microcomputer of control elevator running has central processing unit CPU1a, read only memory ROM 1b, read-write memory RAM 1c and the bus 1d that connects them.The 2nd, well-known pulse-width modulation circuit, it is according to the voltage instruction value of microcomputer 1 output, the pulsewidth of modulated square wave pulse.The 3rd, inverter becomes the current transformation that is subjected to pulse-width modulation circuit 2 control the alternating current of variable voltage variable frequency.The 4th, three-phase alternating-current supply.The 5th, the circuit breaker of connection three-phase alternating-current supply 4.The 6th, three-phase alternating current is transformed into the straight-though rectifier.The 7th, above-mentioned direct current (DC) is carried out the filter capacitor that inverter 3 is supplied with in filtering then.The 8th, by the induction motor (IM) that is used for winch of inverter 3 drive controlling.The 9th, impulse deviser connects induction motor (IM) 8, produces the corresponding pulse of rotative speed with induction motor (IM) 8.The 10th, the counting machine of the pulse that count pulse generator 9 produces.The 11st, by the rope sheave of induction motor (IM) 8 drivings.The 12nd, be wound on the wirerope on the rope sheave 11.The 13rd, be connected the lift car of wirerope 12 1 ends.The 14th, the bob-weight of connection wirerope 12 other ends.The 15th, drive the brake control circuit of magnet stopper 16 according to the instruction of microcomputer 1.The 16th, with the magnet stopper of existing example shown in Figure 5 magnet stopper with spline structure is arranged.The 17th, the telltale of the various information of demonstration microcomputer 1.
The elevator control apparatus of present embodiment constitutes as mentioned above like that, has the mechanism of the lock torque of computing magnet stopper 16.
Fig. 2 is the lock torque arithmetical organ block scheme of an embodiment of first kind of elevator control apparatus of the present invention.
Among the figure, the 21st, lock torque is adjusted the mode setting device, sets the adjustment mode of lock torque by it.The 22nd, car position means of identification, the car position the during operation of computing elevator.The 23rd, car speed detecting device, the speed of the lift car 13 that detection is changing constantly.The 24th, drg action command generating means according to the output of lock torque adjustment mode setting device 21 with car position means of identification 22, generates the drg action command, outputs to brake control circuit 15.The 25th, the lock torque computer device, when drg action command generating means 24 sent the drg action command, the value according to being obtained by car speed detecting device 23 calculated lock torque.And then this result of calculation is presented in the telltale 17.In addition, above-mentioned each computing action is carried out in microcomputer 1.
Below, utilize Fig. 2,3 and 4, an explanation is done in the lock torque computing that elevator control apparatus the carried out action of present embodiment.
Fig. 3 is the diagram of circuit of the lock torque computing action carried out of an embodiment of first kind of elevator control apparatus of the present invention.
Among the figure, at first judge whether to have set lock torque and adjust mode at step S1.If do not set, then do not carry out action from step S2 to step S9.When having set lock torque adjustment mode, judge at step S2 whether the drg action command enters " braking " state.Be not at the drg action command under the situation of " braking " state, enter step S7, judge whether elevator moves under the automatic operating condition of adjustment.When elevator did not move under High-Speed Automatic running situation, lock torque computing action was not carried out.And when step S7 judges that elevator moves under High-Speed Automatic operating condition, then judge at step S8 whether lift car 13 arrives the center of access trunk.This judgement is undertaken by position identification device 22.And then, determining that lift car 13 arrives under the situation of access trunk center, at step S9 the drg action command takes place, make magnet stopper 16 actions by brake control circuit 15.When can not determine that lift car 13 arrives the center position of access trunk, the drg action command does not take place, end process.Detect the amount of movement of lift car 13 by the identification of 22 pairs of car positions of car position means of identification pro rata by the operation of lift car 13, calculate the current location of lift car 13, identify the center of access trunk.On the other hand, at step S2 drg action command is under the situation of " braking " state, enter step S3, car speed V when detecting the drg action by car speed detecting device 23, judge whether to be in the scope of lock torque finding speed Vbs to Vbe, as in this scope, time during step S4 calculates this then, as slipping of brake time tbk, judge at step S5 whether lift car 13 stops fully.Stopping fully under the situation, according to the slipping of brake time tbk that tries to achieve at step S4, the mean deceleration abk when step S6 calculates slipping of brake:
abk＝（Vbs-Vbe）/tbk
This result of calculation is outputed to telltale 17.The speed of car speed detecting device 23 detects to be by pulse tachometer or to be contained in coder on the governor etc. and to carry out.
Lock torque can be used following formula (1) expression:
T＝J·K·abk+TL ……（1）
Here, T is a lock torque, and J is the rotor inertia of elevator, and k is the proportionality coefficient of certain value, and the mean deceleration when abk is slipping of brake, TL are load moments.
Therefore, with the equation of above-mentioned (1) the mean deceleration abk when formula is deformed into slipping of brake, then obtain following formula (2):
abk＝（T-TL）/J·K ……（2）
Say the brake torque adjustment value when trying to achieve 125% car load, lock torque T, the rotor inertia J of elevator in the time of can be from 125% car load, and the mean deceleration abj of load moment TL when calculating at this moment slipping of brake for example.And then, this computing value is illustrated in the telltale 17, by this, maintainer and so on operator adjusts brake torque, makes it to reach this computing value.
Fig. 4 is the characteristic map that replenishes the diagram of circuit of Fig. 3, and the lazy shape of variation of the flow process of Fig. 3 is shown.That is, be illustrated in the car speed when producing the drg action command when elevator under the High-Speed Automatic operating condition reaches the center of access trunk with lift car 13 in the command speed operational process.
Among the figure, Vbs is the detection commencing speed of slipping of brake time tbk, and Vbe is that the detection of slipping of brake time tbk finishes speed.Mean deceleration when in addition, abk is slipping of brake.
In the above-described embodiments, the mean deceleration abk during with slipping of brake is as the adjustment value of lock torque, and still, equally also can adopt from lock torque finding speed Vbs to speed is 0 o'clock range ability (time integral value of finding speed)., can understand as shown in the formula (3) from the range ability S of lock torque finding speed Vbs during from this point to speed 0.
S＝Vb
2s/2·abk＝Vbs
2·J·K/2（T-TL） ……（3）
As mentioned above, the elevator control apparatus of present embodiment comprises: set the lock torque adjustment mode setting device 21 that lock torque is adjusted mode; The car position means of identification 22 of the position of identification lift car 13; Adjust mode setting device 21 and car position means of identification 22 by above-mentioned lock torque, when confirming that lift car 13 operations arrive the center (desired location) of access trunk, the drg action command generating means 24 of output brake action command; Detect the car speed detecting device 23 of the speed of above-mentioned lift car; According to the signal that above-mentioned car speed detecting device 23 and drg action command generating means 24 send, calculate the lock torque computer device 25 of lock torque; The telltale 17(exterior display device that shows the result of calculation of above-mentioned lock torque computer device 25).
That is, the elevator control apparatus of present embodiment is such, when adjusting the center of mode setting device 21 and car position means of identification 22 affirmation lift cars 13 operation arrival access trunies by lock torque, drg action command generating means 24 output brake action commands, simultaneously, the signal that lock torque computer device 25 sends according to car speed detecting device 23 and drg action command generating means 24, calculate lock torque at this moment, result of calculation is presented on the telltale 17.
Therefore, by telltale 17, can correctly learn the result of calculation of lock torque.And then maintainer and so on operator can suitably adjust lock torque, makes it reach this computing value.For this reason, adjust lock torque after need not carrying foundary weight as before, all operations can be carried out in the Machine Room, have saved the time and labor of loading and unloading foundary weight.In addition, drg fastening can not be crossed by force or excessively, and can be adjusted at lock torque in certain reference range.As a result, adjust operation and can simplify, and can correctly carry out the adjustment of lock torque efficiently.
Fig. 5 is the constructional drawing of an embodiment entire system of second kind of elevator control apparatus of the present invention, Fig. 6 is the front elevation of the magnet stopper of an embodiment of second kind of elevator control apparatus of the present invention, and Fig. 7 is the lock torque arithmetical organ block scheme of an embodiment of second kind of elevator control apparatus of the present invention.Among the figure, the symbol identical with the embodiment of existing example and first kind of elevator control apparatus of the present invention represented with mark and had example or the identical or cooresponding component part of this embodiment component part.
Among the figure, the 31st, lock torque decision maker, the signal that sends according to lock torque computer device 25 judge that the computing value of lock torque is whether in predetermined scope.The 32nd, braking force adjustment device, according to the judged result of lock torque decision maker 31, the actual braking force of adjusting.Suitably adjust the compressing power of spring 51 by this braking force adjustment device 32.This lock torque decision maker 31 and braking force adjustment device constitute the lock torque setting device.Other structure is identical with aforementioned first embodiment.That is present embodiment is paid on last embodiment and is added the lock torque setting device and form.
Below, utilize Fig. 8 that lock torque computing action and the lock torque adjustment action that the elevator control apparatus of present embodiment carries out described.Fig. 8 is the diagram of circuit of lock torque computing action and the lock torque adjustment action of an embodiment of second kind of elevator control apparatus of the present invention.
Among the figure, step S1 represents lock torque computing action to S9, and is identical with the action of the step S1 to S9 illustrated in fig. 3 of above-mentioned first embodiment.Thereby, be that the center describes at this with the action of the lock torque adjustment below the step S10.
After step S6 obtains the adjustment value of lock torque according to the slipping of brake deceleration/decel, judge that at step S10 this lock torque adjustment value is whether in specialized range.As within specialized range, the adjustment of lock torque is not carried out in the then not action of execution in step S11 to S13, returns main program, carries out the control of elevator.As when step 10 judges that the adjustment value of lock torque is in outside the specialized range, then enter step S11, whether the adjustment value of judging lock torque is littler than specialized range, if little words, then the plunger (プ テ Application ジ ヤ one) of spring 51 installation positions is sent fastening instruction, carry out scheduled volume fastening by braking force adjustment device 32 after, return step S1 again at step S12, carry out after the lock torque computing action, judge that at step S10 the lock torque adjustment value is whether in specialized range.On the other hand, when the adjustment value of lock torque is bigger than specialized range, plunger in step 13 pair spring 51 installation positions sends and loosens instruction, after carrying out loosening of scheduled volume by braking force adjustment device 32, turn back to step S1 again, carry out lock torque computing action, judge that at step S10 the lock torque adjustment is whether in specialized range then.Like this, repeat this a string adjustment action, till the adjustment value of lock torque enters within the specialized range.
As mentioned above, the elevator control apparatus of present embodiment comprises: set the lock torque adjustment mode setting device 21 that lock torque is adjusted mode; The car position means of identification 22 of the position of identification lift car 13; When confirming that by above-mentioned braking square adjustment mode setting device 21 and car position means of identification 22 lift cars 13 operations reach the center (desired location) of access trunk, output brake is made the drg action command generating means 24 of instruction; Detect the car speed detecting device 23 of above-mentioned elevator car speed; The lock torque computer device 25 of the calculated signals lock torque that above-mentioned car speed detecting device 23 of foundation and drg action command generating means 24 send; The lock torque setting device is made of lock torque decision maker 31 and braking force adjustment device 32, and the signal that sends according to above-mentioned lock torque computer device 25 is adjusted lock torque to the preset range.
That is, the elevator control apparatus of present embodiment is identical with last embodiment, when confirming that by lock torque adjustment mode setting device 21 and car position means of identification 22 lift cars 13 operations reach the center of access trunk, drg action command generating means 24 output brake action commands, simultaneously, the signal that lock torque computer device 25 sends according to car speed detecting device 23 and drg action command generating means 24 calculates lock torque at this moment.And then, by lock torque decision maker 31 and braking force adjustment device 32(lock torque setting device) adjust lock torque, make computing value enter preset range.
Therefore, lock torque is automatic compensation suitably, so, need not adjust lock torque by operators such as maintainers.For this reason, adjust lock torque after carrying foundary weight need not resembling in the past, saved the required time and labor of loading and unloading foundary weight.In addition, drg can fastening mistake by force or excessively, and can lock torque automatically be adjusted in certain reference range, therefore, adjusts operation further to simplify, and can correctly and efficiently adjust lock torque.
In addition, as another embodiment of the present invention, consider maintainer's etc. safety, the speed of lift car 13 reaches than setting the little speed of command speed that lock torque is used in the time of also can reducing drg action command generating means 24 and send the drg action command.
Have again, generally speaking, unbalance from cable, wirerope is unbalance influences minimum, can obtain correct measurement result's viewpoint, in the above-described embodiments with the position of the center of access trunk lift car 13 when sending the drg action command, but, also can perhaps under the rated load, nominal load situation, adopt near the position of lowermost layer near the position that does not have under the situation of car load to adopt top.Can include under these situations that cable is unbalance, the wirerope unbalance factor is in the interior lock torque adjustment that conforms with in every kind of situation.
In addition, in the various embodiments described above, during car position means of identification 22 identification car positions,, detect the amount of movement of lift car 13 pro rata, calculate the current location of lift car 13, the center of identification access trunk according to the operation of lift car.Profit uses the same method also can identify near near the top or position of lowermost layer.In addition, center identification also can be set use switch, detect identification, perhaps near top or under near the situation of setting the lowermost layer, the limit switches that utilize terminal floor to discern usefulness are discerned.
As mentioned above, first kind of elevator control apparatus of the present invention comprises lock torque method of adjustment setting device, the car position means of identification, drg action command generating means, the car speed detecting device, the lock torque computer device, when lock torque is adjusted mode setting device and car position means of identification and is confirmed that elevator cage operation reaches in the access trunk desired location, drg action command generating means output brake action command, simultaneously, the calculated signals sent from car speed detecting device and drg action command generating means of lock torque computer device goes out lock torque at this moment.Rely on above-mentioned so simple structure, just can suitably adjust the computing value of lock torque to lock torque, need not to carry foundary weight and just can correctly adjust lock torque, saved the required time and labor of loading and unloading foundary weight, and can be adjusted at lock torque in certain reference range.Thereby the adjustment operation of lock torque is simplified, and can correctly and efficiently carry out.
Second kind of elevator control apparatus of the present invention comprises lock torque adjustment mode setting device, the car position means of identification, drg action command generating means, the car speed detecting device, lock torque computer device and lock torque setting device, adjust mode setting device and car position means of identification when lock torque and confirm that elevator cage operation is in access trunk during the desired location, drg action command generating means output brake action command, simultaneously, the signal that the lock torque computer device sends according to car speed detecting device and drg action command generating means, calculate lock torque at this moment, adjust lock torque by the lock torque setting device, computing value is entered within the preset range.Rely on above-mentioned simple structure, need not to carry foundary weight and just can automatically adjust lock torque, thereby saved the required time and labor of loading and unloading foundary weight, in addition, wait the lock torque that carries out to adjust operation by the operator in above-mentioned first kind of elevator control apparatus and also become unnecessary.As a result, lock torque adjustment operation is further simplified, and can correctly carry out efficiently.
Claims (2)
1, a kind of elevator control apparatus, it comprises:
The car position means of identification of the position of identification lift car;
Detect the car speed detecting device of the speed of above-mentioned lift car;
It is characterized in that, also comprise:
Set lock torque and adjust the lock torque adjustment mode setting device of mode;
When adjusting mode setting device and car position means of identification by above-mentioned lock torque and confirm that elevator cage operation arrives in the access trunk desired location, the drg action command generating means of output brake action command;
The lock torque computer device of the calculated signals lock torque that above-mentioned car speed detecting device of foundation and drg action command generating means send,
The read out instrument that shows the lock torque adjustment amount according to the output of above-mentioned lock torque computer device.
2, a kind of elevator control apparatus, it comprises:
The car position means of identification of the position of identification lift car;
Detect the car speed detecting device of the speed of above-mentioned lift car;
It is characterized in that, also comprise:
Set lock torque and adjust the lock torque adjustment mode setting device of mode;
When adjusting mode setting device and car position means of identification by above-mentioned lock torque and confirm that elevator cage operation arrives in the access trunk desired location, the drg action command generating means of output brake action command;
The lock torque computer device of the calculated signals lock torque that above-mentioned car speed detecting device of foundation and drg action command generating means send,
The signal that sends according to above-mentioned lock torque computer device is adjusted the lock torque setting device of lock torque to the preset range.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP125870/91 | 1991-05-29 | ||
| JP3125870A JP2630110B2 (en) | 1991-01-10 | 1991-05-29 | Elevator adjustment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1067222A CN1067222A (en) | 1992-12-23 |
| CN1024778C true CN1024778C (en) | 1994-06-01 |
Family
ID=14920972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92104238A Expired - Lifetime CN1024778C (en) | 1991-05-29 | 1992-05-28 | Elevator control apparatus |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR960003012B1 (en) |
| CN (1) | CN1024778C (en) |
| TW (1) | TW201293B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465604C (en) * | 2002-11-20 | 2009-03-04 | 三菱电机建筑技术服务株式会社 | Device and method for measuring torque of elevator |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648663B (en) * | 2004-05-31 | 2011-09-14 | 三菱电机株式会社 | Elevator device |
| US7931127B2 (en) * | 2006-08-03 | 2011-04-26 | Mitsubishi Electric Corporation | Elevator apparatus |
| JP2013049568A (en) * | 2011-08-31 | 2013-03-14 | Toshiba Elevator Co Ltd | Brake holding torque adjusting device for hoisting machine and brake holding torque adjusting method for the same |
| CN104743446B (en) * | 2015-04-09 | 2017-03-15 | 上海时科自动化有限公司 | A kind of crane brake braking moment detection method and system |
| CN105781510B (en) * | 2016-02-29 | 2018-06-26 | 烟台智本知识产权运营管理有限公司 | A kind of endogenous microbes drive the method for improving oil recovery factor |
| CN109665390B (en) * | 2018-12-29 | 2021-07-16 | 日立电梯（中国）有限公司 | Elevator brake control method and device, elevator control equipment and elevator |
| CN114560371B (en) * | 2022-03-11 | 2022-11-01 | 四川省特种设备检验研究院 | Elevator steel wire rope traction force detection and verification system and method |
-
1992
- 1992-03-31 TW TW081102422A patent/TW201293B/en active
- 1992-05-12 KR KR1019920007964A patent/KR960003012B1/en not_active IP Right Cessation
- 1992-05-28 CN CN92104238A patent/CN1024778C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465604C (en) * | 2002-11-20 | 2009-03-04 | 三菱电机建筑技术服务株式会社 | Device and method for measuring torque of elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1067222A (en) | 1992-12-23 |
| KR920021422A (en) | 1992-12-18 |
| TW201293B (en) | 1993-03-01 |
| KR960003012B1 (en) | 1996-03-02 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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Expiration termination date: 20120528 Granted publication date: 19940601 |