CN102381597A - Elevator device - Google Patents
Elevator device Download PDFInfo
- Publication number
- CN102381597A CN102381597A CN2011101112462A CN201110111246A CN102381597A CN 102381597 A CN102381597 A CN 102381597A CN 2011101112462 A CN2011101112462 A CN 2011101112462A CN 201110111246 A CN201110111246 A CN 201110111246A CN 102381597 A CN102381597 A CN 102381597A
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- car
- switch
- aforementioned
- safety
- halt instruction
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The embodiment of the present invention relates to an elevator device employing a safety strategy in the processing inspection of an elevating channel, which can enable the car to move to an end portion inspection position higher than a safe ensuring position in the elevating channel, thereby enabling the top device inspection of the elevating channel to be reliable and ensuring the inspection personnel to be safe. The elevator device is provided with a first switch working when the car in the elevating channel arrives at the safety ensuring position ensuring the inspection personnel to be safe, and outputting a stopping instruction for stopping the movement of the car; a second switch working when the car arrives at the end portion side position more reliable than the safety ensuring position in the elevating channel, and outputting the stopping instruction for stopping the movement of the car, and an operation switching switch arranged near the second switch being operated to enable the stopping instruction generated by the first switch to be invalid, locking a moving instruction for moving the car towards the direction opposite to the moving direction of the end portion, and the locking is unlocked through storing the operation state.
Description
The application is willing to the 2010-196908 (applying date: 2010.2.9) be the basis, enjoy the preceence of this patent application with japanese patent application laid.The application is through comprising the full content of this application with reference to this Japanese patent application.
Technical field
The lift appliance of the Security Countermeasures when embodiment of the present invention relates to the inspection of having implemented in the lift path.
Background technology
In the maintenance inspection in the lift path of elevator, the operating personnel takes advantage of the car end face in the lift path from the stopping port of elevator hall, is that operation is checked at the foothold with this car end face.In this case, in order to ensure supervisory personnel's safety, various Security Countermeasures (for example, TOHKEMY 2010-137962 communique) have been adopted.
As one of such Security Countermeasures; Following switch is set; Prevent that the operating personnel on the car from colliding the top in the lift path; I.e. this switch: if car arrives predetermined upper limit position in the lift path, be the lift path top with the facial interval of car roof become predefined safety distance position (be referred to as and guarantee the position safely), then detection and the rising work of car is automatically stopped.
In recent lift appliance, for the occupied area that makes the elevator in the building becomes Min., the machine House-less type is popularized.In the lift appliance of this machine House-less type, the upper end in lift path is provided with the go up and down winch of driving of car.Therefore, aforesaid safety distance is not the distance from the car roof face to the lift path top, and is the distance that the portion bottom surface is set from the car roof face to winch.Therefore; Upper end in lift path is provided with the safety of the lift appliance of winch and guarantees the position, becomes the position of comparing the height dimension amount of low winch with the lift appliance (for example the lift appliance of hydraulic type etc.) that the upper end in lift path is not provided with winch.When car stops, not rising under the situation of the height more than it in so lower position; Can guarantee the safety of service personnel; But be arranged in inspection under the situation of equipment (comprising winch) at lift path top; Because the operating personnel can not be fully near the inspection object-based device, so be difficult to check operation, the reduction of operation property.
Summary of the invention
Problem to be solved by this invention is; A kind of lift appliance is provided; Its ratio safety that car is moved in the lift path is guaranteed the inspection position, end that the position is higher, the inspection of the equipment that is arranged at the lift path top is become reliably, and can guarantee supervisory personnel's safety.
The lift appliance of embodiment possesses: the 1st switch, and when guaranteeing the position, the safety that its car in lift path arrives the safety that can guarantee the supervisory personnel works, and output is used to make the mobile halt instruction that stops of this car; The 2nd switch, its aforementioned safety of ratio in aforementioned car arrives lift path are guaranteed to work when the position of end side is more leaned in the position, and output is used to make the mobile halt instruction that stops of this car; And operation change-over switch; It is arranged near the 2nd switch; That the halt instruction that is generated by aforementioned the 1st switch is become is invalid through being operated; And block the move round about of car, remove above-mentioned blockade through the recovery of its serviceability, said opposite sense is with respect to the opposite sense to the moving direction of aforesaid end.
Lift appliance according to said structure; The ratio safety that car is moved in the lift path is guaranteed the inspection position, end that the position is higher; Make the inspection of the equipment that is arranged at the lift path top become the failure-free inspection, and can guarantee supervisory personnel's safety.
Description of drawings
Fig. 1 is the integral structure figure of the lift appliance of an embodiment of the present invention.
Fig. 2 is the circuit diagram that is illustrated in the connection structure of each switch that uses in the embodiment of the present invention.
Fig. 3 is the diagram of circuit of the Control work of an explanation embodiment of the present invention.
The specific embodiment
Below, about an embodiment of the present invention, describe with reference to accompanying drawing.And, in each figure, for same position mark prosign, and the explanation of omission repetition.
In Fig. 1, in the lift path 11 in being formed at building, the car 2 of lift appliance is set to can go up and down through guide rail 12.In the upper end of this lift path 11, be provided with winch 1, car 2 and balance weight 13 are gone up and down to drive via the hawser 14 that is set up between them each other.
On car 2, be provided with the cam part 3 of lengthwise along its short transverse, when the rising of car 2 is moved, contact and make its work with the switch 41,42 on top in being arranged at lift path 11.In addition, constitute, at the end face of car 2, service personnel 15 can carry out maintenance inspection to the various device that is arranged in the lift path 11 from nearest floor transfer when inspection.And then, near the switch 42 on the top in lift path 11, be provided with by carrying and take advantage of in the service personnel 15 manipulable operation change-over switches 5 of the end face of car 2.
When the safety that the 1st switch 41, the car 2 in lift path 11 arrive the safety that can guarantee service personnel 15 is guaranteed the position, engage with cam part 3 and work, export the mobile halt instruction that stops that being used to make this car 2.Promptly; The 1st switch 41; When the rising of car 2 operation, car 2 arrive guaranteed with the safety distance of the portion that the is provided with bottom surface of the winch 1 of the upper end that is arranged at lift path 11 predetermined safe when guaranteeing the position, output makes the rising of this car 2 move the halt instruction that stops.
In addition; The 2nd switch 42; The inspection position, end that ratio safety in car 2 arrival lift path 11 is guaranteed more to lean on end side in the position is when (being used to check the position of the equipment of the end that is positioned at lift path 11); Engage with cam part 3 and work, output is used to make the mobile halt instruction that stops of this car 2.That is, the 2nd switch 42 arrives when guaranteeing that than safety the inspection position, end on top is more leaned in the position at car 2, and output makes the rising of this car 2 move the halt instruction that stops.
At this,, then this lift appliance for example is set at from the hydraulic elevators device and reequips lift appliance for the cable type that needs winch if describe about the position that is provided with of the 1st switch 41 and the 2nd switch 42.In the hydraulic elevators before repacking; Need winch be set in the top of lift path 11 portion; Safety in order to ensure the service personnel on the car 2 15; As long as between the top of the end face of car 2 and lift path 11, guarantee the predetermined safe distance, need only the safety of this situation is guaranteed that set positions is in the height that can stopped to control by the 2nd switch 42.But; After repacking; Because portion's winch 1 of having set as shown in Figure 1, so, then to the portion that the is provided with bottom surface of winch 1, can not guarantee safety distance at end face from car 2 if make car 2 rise to the height that can stop to control by switch 42 in the top of lift path 11.Therefore, can guarantee this safety distance the set positions of below guarantee the position for safety, switch 41 is set herein, being set is the 1st switch 41, and the safety that here is set at after the repacking is guaranteed the position.In addition, the safety that repacking is preceding guarantees that set positions is the inspection position, end after the repacking, is used as the 2nd switch 42 with the switch former state that is provided with herein.
Certainly, be not limited to reequip object, under the newly-installed situation,, checking that in the end position is provided with the 2nd switch 42 and gets final product also as long as guarantee that in above-mentioned safety the position is provided with the 1st switch 41 as the cable type elevator that winch is arranged at the lift path upper end.
Operation change-over switch 5 is arranged near the 2nd switch 42, and when it was operated by service personnel 15, it is invalid that the halt instruction that is generated by the 1st switch 41 is become, and block car 2 to rightabout move with respect to moving direction.This blocks, and is disengaged through the recovery for the operation that moves change-over switch 5.That is, operation change-over switch 5 is invalid through the halt instruction that is generated by the 1st switch 41 is become.Therefore, car 2 can be crossed the rising operation that safety is guaranteed the position.The move downwards of in addition, blocking car 2 this moment.This blockade as stated, is disengaged through the operation of recovery for operation change-over switch 5.
Then, utilize Fig. 2, the contact 41b and the contact 42b of the 2nd switch 42, the contact 5a of operation change-over switch 5, the top operation permission circuit 21 of 5b and the structure that the below operation allows circuit 22 that comprise the 1st switch 41 are described.
At this, contact 41b and contact 42b are that corresponding switch 41 or 42 is through engaging the so-called b contact that becomes off-state with cam part 3 when the rising operation of car 2.These b contacts 41b, 42b and top operation allow circuit 21 settings of connect, and any becomes off-state and the rising of car 2 moved stops to control through it.That is, these b contacts 41b, 42b, through with the engaging of cam part 3, to car 2 outputs rising operation halt instructions.
In addition, operation change-over switch 5 has through a contact 5a that is become on-state by operation and the b contact 5b that becomes off-state.The b contact 41b of a contact 5a and the 1st switch 41 is connected in parallel, and in addition, b contact 5b is arranged at the below operation and allows circuit 22.Operation change-over switch 5, its a contact 5a becomes on-state through being operated, and will be in the b contact 41b bypass of parallel connection relation.Therefore, it is invalid the rising operation halt instruction of the car 2 that is generated by the 1st switch 41 to be become.Therefore, car 2 can be crossed the rising operation that safety is guaranteed the position.In addition, since operation change-over switch 5, make the below operation allow circuit 22 to break off through the b contact 5b that is become off-state by operation, so block the move downwards of car 2.This blockade as stated, is disengaged through the serviceability of recovery for operation change-over switch 5.
In addition, preferably, operation change-over switch 5 is arranged in the zone that winch 1 is not set on plane of lift path 11.If constitute like this; Even then, cross safety like the said car 2 in back and guarantee the position and rise, also because the winch 1 that do not exist as shown in the figure above it through the operation of operation change-over switch 5; So the supervisory personnel 15 on the car 2 can not collide winch 1, safety improves more.
In said structure, Fig. 1 representes for the lift path of checking lift appliance inner, and supervisory personnel 15 changes in the state of the end face of car 2 from nearest floor.Be set under this state,, make car 2 carry out lifting moving in order to check the in-to-in equipment of lift path 11.At this moment, the 1st switch 41 and the 2nd switch 42 do not contact with the cam part 3 of car 2 respectively, and those b contacts 41b shown in Fig. 2,42b all are in the on-state former state, and the operation of rising allows circuit 21 also to be in on-state.In addition, because operation change-over switch 5 is not operated, so its a contact 5a breaks off, b contact 5b is in the on-state former state, and the below operation allows circuit 22 also to be in on-state.Therefore, through supervisory personnel 15 operation, can make to rise on the position arbitrarily of car in lift path 11 or decline.
Under such state, be to be arranged under the situation of equipment of the top portion of lift path 11 at the inspection object, need make car 2 rise to the most significant bit position in the lift path 11.In this case, guarantee the position safely if car 2 is risen arrive, because the cam part 3 of car 2 is connected to the 1st switch 41, so its b contact 41b becomes off-state, the top operation allows circuit 21 to become disconnection.Therefore, the rising of car 2 is stopped the safety that is controlled in for supervisory personnel 15 and guarantees the position, and the supervisory personnel 15 on the car 2 can not collide the winch 1 that is arranged at the upper end in the lift path 11, and safety is guaranteed.
This guarantees the position safely, as previously mentioned, is the position of between the portion that the is provided with bottom surface of car 2 and winch 1, having guaranteed the predetermined safe distance, stops at this position through making car 2, can guarantee the supervisory personnel's on the car 2 safety.But on the other hand, can produce supervisory personnel 15 because can not to be close to ground for the equipment in the topmost setting of lift path 11 approaching, so can not check the problem of operation fully.In this case, near the operation change-over switch 5 of supervisory personnel's 15 operation setting the 2nd switch 42.Through this operation, a contact 5a of operation change-over switch 5 becomes on-state, and b contact 5b becomes off-state.Therefore, it is invalid that the rising operation halt instruction that is generated by the 1st switch 41 becomes, and can make car 2 cross safety and guarantee the position and rise.In addition, because the below operation allows circuit 22 to become off-state, so car is moved downwards.
Under this state; If car 2 is risen to be moved, inspection position, car 2 arrival ends; Then cam part 3 and the 2nd switch 42 butts owing to make the top operation allow circuit 21 to become off-state once more through its b contact 42b, are controlled in inspection position, end so car 2 is stopped.In this inspection position, end, because supervisory personnel 15 can be fully near the inspection object, so the inspection operation becomes easily the inspection that can be fit to.Certainly; Though end inspection position and winch 1 between can not guarantee sufficient safety distance; But owing to guarantee that in the safety of its prime the position temporarily makes car 2 stop; So during the rising of the car 2 after the operation of after this operation change-over switch 5 operation, supervisory personnel 15 notices that fully safety can not suffer damage.
In the case; If will move in the zone that winch 1 is not set on plane that change-over switch 5 is arranged at lift path 11 as previously mentioned, then because when the operation of operation change-over switch 5, supervisory personnel 15 moves to the zone that does not have winch 1; Even guarantee the position and rise so car 2 is crossed safety; Also owing to do not have winch 1 above it, so can prevent the collision of supervisory personnel 15 to winch 1 reliably, safety improves more.
After inspection finishes, operation change-over switch 5 is recovered from serviceability.Recover through this, because a contact 5a of operation change-over switch 5 becomes disconnection, b contact 5b becomes on-state, so the below operation allows circuit 22 to revert to on-state.Therefore, car 2 is moved downwards, it reverted to lifting moving to arrive the state of position arbitrarily.In other words, if the serviceability of operation change-over switch 5 is recovered, then owing to making car 2 turn back to original position, so can prevent to move the recovery of forgetting of change-over switch 5 reliably.
Treating process to through the above-mentioned control of software executing the time utilizes the diagram of circuit of Fig. 3 to describe.When handling beginning, keep watch on the 1st switch 41 and whether connect (whether being on-state) (step 301).Arrive that safety is guaranteed the position and the 1st switch 41 (step 301: not) when becoming off-state at car 2; Judge then whether operation change-over switch 5 has been carried out blocked operation (step 302); If owing to also do not carried out blocked operation (step 302: not) then the top operation allows circuit 21 to become off-state, so could not carry out the rising operation (step 303) of car 2.
With respect to this; Carried out under the situation of blocked operation (step 302: be) in operation change-over switch 5; It is invalid that the rising operation halt instruction that generates owing to the disconnection work by the b contact 41b of the 1st switch 41 shown in Figure 2 is become by bypass; So the top operation allows circuit 21 to become on-state,, whether connect (whether being on-state) (step 304) so keep watch on the 2nd switch 42 owing to become the state of the operation of can rising.After this, because below shown in Figure 2 operation allows circuit 22 to become off-state, so can not carry out the decline operation of car 2.
Under this state, if car 2 no show end stop position and the 2nd switch is in on-state (step 304: be) is still then restored (step 305: be not condition), proceed the supervision (step 304) of the 2nd switch 42 with operation change-over switch 5.
In addition,, turn back to step 303, can not carry out the rising operation of car 2, and its state that can not descend operation is disengaged from step 302 when moving change-over switch 5 halfway by (step 305: be) under the situation of restoring.
In operation change-over switch 5 not by recovery and car 2 rises and when arriving inspection position, end since the 2nd switch 42 become off-state (step 304: not), so the rising of car 2 operation stops (step 306).After this, descend, as long as the serviceability of operation change-over switch 5 is recovered in order to make car 2.
Above explanation; Be about supervisory personnel 15 take advantage of end face in car 2, the explanation of situation that the topmost in the lift path 11 is checked; Though it is not shown; But drop to the situation of checking operation in the mine pit that is formed at the bottom in the lift path 11 about the operating personnel, the switch that is equivalent to above-mentioned the 1st switch the 41, the 2nd switch 42, operation change-over switch 5 also can be set respectively, likewise constitute.That is, under the situation in the supervisory personnel drops to mine pit,, car 2 is stopped at apart from the mine pit bottom surface automatically kept the safety of predetermined safe distance to guarantee the position in order to protect this supervisory personnel.Therefore, arrived safety through its operation that descends and guaranteed the position, the 1st switch that the decline work of car is stopped if car 2 is set.
In recent years, the degree of depth of mine pit has the tendency of shortening, and above-mentioned safety guarantees that the position is set at than higher position.Therefore, because car 2 stops in this higher position, so under the situation that the supervisory personnel in mine pit checks the equipment that is arranged at car 2, existence can not be fully near the situation of checking object.Therefore; Guaranteeing that than aforementioned safety the position more is provided with the 2nd switch by the inspection position, end of bottom; And constitute; Guarantee the position and when operation of descending making car 2 cross aforementioned safety, if car 2 has arrived this inspection position, end, cam part 3 butts of the 2nd switch and the car 2 and decline work of car 2 is stopped then.
And then, the operation change-over switch is set near the 2nd switch, and constitutes; Operation through the operation change-over switch; It is invalid that the halt instruction that is generated by the 1st switch is become, and block the move to the top of car, removes above-mentioned blockade through the operation recovery of operation change-over switch.
If constitute like this, then under the state in the supervisory personnel drops to mine pit, car is descended under the situation of operation, car 2 at first guarantees that in safety the position is stopped control through the 1st switch.When not checking fully under the situation of operation at this stop position, through operation operation change-over switch, it is invalid that the decline operation halt instruction that is generated by the 1st switch is become, and becomes the state of the operation that can descend.And, make car 2 operation that further descends, when arriving inspection position, end, make the 2nd switch work and the decline of car 2 is stopped.Therefore, the supervisory personnel in the mine pit can check near the car 2 that has moved to quite low inspection position, end to be fit to operation and easily to check.
Though several kinds of embodiments of the present invention are illustrated, these embodiments are to point out as an example, are not to limit scope of invention.The embodiment that these are new can be implemented with other variety of way, can carry out various omissions, displacement, distortion in the scope of the purport that does not break away from invention.These embodiments and/or its distortion all are contained in scope of invention and/or the purport, and are contained in the scope of the invention equalization of putting down in writing with claim.
Claims (4)
1. lift appliance is characterized in that possessing:
The 1st switch is worked when the safety that its car in lift path arrives the safety that can guarantee the supervisory personnel is guaranteed the position, and output is used to make the mobile halt instruction that stops of this car;
The 2nd switch, its aforementioned safety of ratio in aforementioned car arrives lift path are guaranteed to work when the position of end side is more leaned in the position, and output is used to make the mobile halt instruction that stops of this car; And
The operation change-over switch; It is arranged near the 2nd switch; That the halt instruction that is generated by aforementioned the 1st switch is become is invalid through being operated; And block the move round about of car, remove above-mentioned blockade through the recovery of its serviceability, said opposite sense is with respect to the opposite sense to the moving direction of aforesaid end.
2. lift appliance according to claim 1 is characterized in that,
Aforementioned the 1st switch; When the rising operation of car; When car arrival predetermined safe is guaranteed the position; Output makes the rising of this car move the halt instruction that stops, said predetermined safe guarantee position assurance with the safety distance of the portion that the is provided with bottom surface of the winch of the upper end that is arranged at aforementioned lift path;
Aforementioned the 2nd switch, when this car arrival guaranteed that than aforementioned safety the desired location on top is more leaned in the position, output made the rising of this car move the halt instruction that stops;
Aforementioned operation change-over switch, through being operated, it is invalid that the halt instruction that is generated by aforementioned the 1st switch is become, and block the move downwards of car, removes above-mentioned blockade through its operation recovery.
3. lift appliance according to claim 2 is characterized in that,
Aforementioned operation change-over switch near aforementioned the 2nd switch, is arranged in the zone that aforementioned winch is not set on plane of aforementioned lift path.
4. lift appliance according to claim 1 is characterized in that,
Aforementioned the 1st switch; When the decline operation of car; When car arrived safety and guarantees the position, output made the decline of this car move the halt instruction that stops, said safety guarantee the position and the mine pit bottom surface of aforementioned lift path bottom between guaranteed the predetermined safe position;
Aforementioned the 2nd switch, when this car arrival guaranteed that than aforementioned safety the desired location of bottom is more leaned in the position, output made the decline of this car move the halt instruction that stops;
Aforementioned operation change-over switch, through its operation, it is invalid that the halt instruction that is generated by aforementioned the 1st switch is become, and block the move to the top of car, removes above-mentioned blockade through the recovery of its serviceability.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP196908/2010 | 2010-09-02 | ||
| JP2010196908A JP2012051708A (en) | 2010-09-02 | 2010-09-02 | Elevator device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102381597A true CN102381597A (en) | 2012-03-21 |
| CN102381597B CN102381597B (en) | 2015-02-25 |
Family
ID=45821506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110111246.2A Expired - Fee Related CN102381597B (en) | 2010-09-02 | 2011-04-29 | Elevator device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012051708A (en) |
| CN (1) | CN102381597B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529368A (en) * | 2017-03-06 | 2018-09-14 | 东芝电梯株式会社 | Elevator mainteinance Work support system |
| US10457522B2 (en) | 2016-06-30 | 2019-10-29 | Otis Elevator Company | Limit switch system including first limit device and second limit device |
| CN111566036A (en) * | 2018-01-26 | 2020-08-21 | 三菱电机大楼技术服务株式会社 | Control device having function of maintaining position of elevator car at position suitable for operation, and elevator system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107187967B (en) * | 2017-06-29 | 2023-04-07 | 快意电梯股份有限公司 | Safe elevator maintenance control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002003113A (en) * | 2000-06-15 | 2002-01-09 | Hitachi Building Systems Co Ltd | Car top maintenance and operation device of elevator |
| JP2002114462A (en) * | 2000-10-11 | 2002-04-16 | Mitsubishi Electric Building Techno Service Co Ltd | Maintenance and inspection time operation device of elevator |
| JP2004189439A (en) * | 2002-12-12 | 2004-07-08 | Hitachi Building Systems Co Ltd | Elevator device |
| JP2006199404A (en) * | 2005-01-19 | 2006-08-03 | Mitsubishi Electric Corp | Terminal safety device for elevator |
-
2010
- 2010-09-02 JP JP2010196908A patent/JP2012051708A/en active Pending
-
2011
- 2011-04-29 CN CN201110111246.2A patent/CN102381597B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002003113A (en) * | 2000-06-15 | 2002-01-09 | Hitachi Building Systems Co Ltd | Car top maintenance and operation device of elevator |
| JP2002114462A (en) * | 2000-10-11 | 2002-04-16 | Mitsubishi Electric Building Techno Service Co Ltd | Maintenance and inspection time operation device of elevator |
| JP2004189439A (en) * | 2002-12-12 | 2004-07-08 | Hitachi Building Systems Co Ltd | Elevator device |
| JP2006199404A (en) * | 2005-01-19 | 2006-08-03 | Mitsubishi Electric Corp | Terminal safety device for elevator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10457522B2 (en) | 2016-06-30 | 2019-10-29 | Otis Elevator Company | Limit switch system including first limit device and second limit device |
| CN108529368A (en) * | 2017-03-06 | 2018-09-14 | 东芝电梯株式会社 | Elevator mainteinance Work support system |
| CN111566036A (en) * | 2018-01-26 | 2020-08-21 | 三菱电机大楼技术服务株式会社 | Control device having function of maintaining position of elevator car at position suitable for operation, and elevator system |
| CN111566036B (en) * | 2018-01-26 | 2021-11-09 | 三菱电机大楼技术服务株式会社 | Control device having function of maintaining position of elevator car at position suitable for operation, and elevator system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102381597B (en) | 2015-02-25 |
| JP2012051708A (en) | 2012-03-15 |
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Granted publication date: 20150225 Termination date: 20160429 |