CN101348203B - Elevator safety device and control method thereof - Google Patents
Elevator safety device and control method thereof Download PDFInfo
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- CN101348203B CN101348203B CN2008100291162A CN200810029116A CN101348203B CN 101348203 B CN101348203 B CN 101348203B CN 2008100291162 A CN2008100291162 A CN 2008100291162A CN 200810029116 A CN200810029116 A CN 200810029116A CN 101348203 B CN101348203 B CN 101348203B
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Abstract
The invention discloses a safety device for an elevator and a control method thereof. The safety device for the elevator comprises a safety loop consisting of an emergency stop switch, a safety sensor and a safe operation contactor which are connected serially, as well as a detection loop. The detection signal end of the detection loop is connected with the emergency stop switch, and is used for detecting the recovery signal of the emergency stop switch; and the signal output end of the detection loop is connected with an elevator control system, and is used for starting a time delay program when an effective recovery signal of the emergency stop switch is detected. The elevator safety control method is applied to the elevator control system in the safety recovery process of the emergency stop switch; and when the elevator control system detects the recovery signal of the emergency stop switch and judges the recovery signal to be effective, the time delay program is automatically called, so as to allow the emergency stop switch to recover after a certain period of time delay. The elevator safety device can effectively avoid personal safety accidents from occurring because the functions of an on-site door lock device are shielded and do not recover yet when elevator maintenance personnel withdraw from a door area after elevator shaft operation.
Description
Technical field
The present invention relates to a kind of elevator car safety, particularly under the situation that elevator hall's door lock is not removed by short circuit, improve the device of protection repair and maintenance personnel personal safety, and the control method of this safety device.
Background technology
When elevator needs repairing or maintain; service personnel is after operation finishes in entering elevator hoistways, can (be generally the push switch of manual control, the control circuit of series connection access device recovering emergency stop switch usually; be used in emergency circumstances quick arrestment, avoid non-normal working.In detail principle will be further described among the embodiment later) after withdraw from hoistway, after Room door was closed, elevator can respond or return the base station automatically and enter volume speed and move under normal condition.
But indivedual elevators are because a variety of causes, may exist under the abnormal conditions that Room every lock-switch short circuit do not remove, and before service personnel did not withdraw from a district as yet fully, elevator entered volume speed running state suddenly, and human casualty accident very easily takes place.The Modern High-Speed elevator constantly develops and popularizes, as long as there is this hidden danger, even veteran service personnel, also can their life security of serious threat.
Summary of the invention
At the problems referred to above; the object of the present invention is to provide a kind of for improving the safety device and the control method thereof of protection service personnel operational security; can avoid the repair and maintenance personnel because the door lock assembly function conductively-closed of the on-the-spot Room does not recover under the normal situation by actv., the job safety accident takes place.
The technical solution adopted in the present invention: a kind of elevator car safety, comprise the safety return circuit that composes in series by emergency stop switch, safety sensor and safe operation contactless switch, and detection loop, the signal detection end in described detection loop is connected with emergency stop switch, is used to detect the restoring signal of emergency stop switch; The signal output part in described detection loop is connected with apparatus for controlling elevator, is used for starting when detecting effective restoring signal of emergency stop switch delay procedure.
Above-mentioned safety return circuit comprises several emergency stop switchs, described emergency stop switch with " or " logical relation insert the I/O interface of apparatus for controlling elevator, by central process unit its signal is sampled.Perhaps can adopt a plurality of emergency stop switchs form " or " logical relation, and be connected in series into safety return circuit by normally closed contact by slug relay control, need not to increase the I/O loop of photoelectrical coupler and input central process unit, also need not revise former control program, directly use the delay recovery of the control realization of slug relay emergency stop switch.
Above-mentioned detection loop comprises photoelectrical coupler, and the signal input part of described photoelectrical coupler is connected with emergency stop switch, and one of I/O interface of signal output part and apparatus for controlling elevator is connected, and is used to detect the restoring signal of emergency stop switch.
The present invention provides a kind of elevator security control method simultaneously, be applied to the security recovery process of apparatus for controlling elevator to emergency stop switch, detect the restoring signal of emergency stop switch when apparatus for controlling elevator, and judge when it is effective, automatically call delay procedure, emergency stop switch is recovered behind the time-delay certain hour.
Above-mentioned apparatus for controlling elevator is carried out in the process of delay procedure, stops to respond the request signal of any elevator operation.The delay time of described delay procedure is not less than the elevator maintain and protection personnel from recovering behind the emergency stop switch to the time that can withdraw from elevator hoistways He Men district safely.
The invention has the beneficial effects as follows, can effectively avoid more repair and maintenance personnel to retreat when district of going out in the elevator hoistways operation, because the door lock assembly function conductively-closed of the on-the-spot Room does not recover under the normal situation, and the personal safety accident that takes place.And have characteristics such as cost is low, easy realization, can the normal functions of use of elevator not impacted, and meet in the GB GB7588 elevator safety standard requirement sudden-stop function.
Description of drawings
Fig. 1 (a) is the schematic diagram of safety return circuit relevant with the emergency stop switch recovery in the existing elevator device;
Fig. 1 (b) is the workflow diagram of safety return circuit shown in Fig. 1 (a);
Fig. 2 (a) is the schematic diagram that recovers relevant safety return circuit in the elevator device of the present invention with emergency stop switch;
Fig. 2 (b) is the workflow diagram of safety return circuit shown in Fig. 2 (a);
Fig. 3 is the schematic diagram of the safety return circuit of the described emergency stop switch recovery of another embodiment of the present invention.
The specific embodiment
Shown in Fig. 1 (a), before implementing technical scheme of the present invention, safety return circuit in the existing elevator device is composed in series by emergency stop switch 1, safety sensor 2 and safe operation contactless switch 3, according to different elevator devices, can comprise several emergency stop switchs 1 (being shown as two in the present embodiment) and safety sensor 2 and (be shown as three in the present embodiment, other omission), by the control contact of safe operation contactless switch 3, allow signal for the elevator device safe operation.In addition, in this safety return circuit, also draw one road signal and be connected, and be connected with the I/O interface of apparatus for controlling elevator, be used to detect the signal of safety return circuit by signal output part with the input end of photoelectrical coupler 4.
Be depicted as the workflow diagram of above-mentioned safety return circuit as Fig. 1 (b), in running process of elevator, after detecting the safety return circuit cut-off signal, system changes safety return circuit disconnection process program over to, and detect safety return circuit and whether recover (being the recovery of emergency stop switch), if do not recover as yet, then continue to carry out safety return circuit disconnection process program; If recover, condition satisfies safe operation and has calls terraced signal together, promptly changes normal operation procedure automatically over to.Usually service personnel is after operation finishes in elevator hoistways, recover to withdraw from hoistway behind the emergency stop switch, elevator can recover normal operating condition, but, because a variety of causes, before may existing service personnel not withdraw from a district fully as yet, elevator enters volume speed running state suddenly, causes personnel casualty accidents.
According to instance analysis to this type of safety misadventure; the present invention takes after the recovery of the emergency stop switch in the hoistway; increase the security function device of delay process; outside service personnel safety withdraws from a district; just continue the measure of response elevator volume speed operation, thus the harm that the actv. protection causes service personnel owing to short circuit door switch reason etc.Be described in further detail below in conjunction with specific embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment one:
Shown in Fig. 2 (a), the present invention is in original elevator device (MCU circuit or operation logic treatment circuit system), increase by one the tunnel and detect loop 5, to the emergency stop switch in the hoistway 1 adopt with " or " logical relation insert the I/O interface of apparatus for controlling elevator, by central process unit it is carried out signal sampling.Wherein, described detection loop 5 comprises photoelectrical coupler 6, and the signal input part of this photoelectrical coupler is connected with emergency stop switch, and one of I/O interface of signal output part and apparatus for controlling elevator is connected, and is used to detect the restoring signal of emergency stop switch.
Be depicted as workflow diagram of the present invention as Fig. 2 (b), in running process of elevator, at first detect elevator safety loop and whether disconnect, if disconnection, then normal response elevator operation procedure are not arranged; If detect the safety return circuit cut-off signal, then enter safety return circuit disconnection process program.Then, detect safety return circuit and whether recover,, then continue to carry out safety return circuit disconnection process program if do not recover as yet; If detect the safety return circuit restoring signal, further whether the emergency stop switch that detects in the hoistway recovers, and judge whether this signal is effective, if the emergency stop switch restoring signal is effective, then call delay procedure (time-delay several seconds or tens of second) automatically, wait to delay time finish or invalid emergency stop switch restoring signal after, continue to carry out response elevator logical process program, if condition satisfies safe operation and has and calls terraced signal together, promptly change normal operation procedure automatically over to.It as shown in frame of broken lines among the figure flow process that detects the emergency stop switch restoring signal.During calling the delay process program, for the support personnel can withdraw from hoistway He Men district safely, therefore master control program is forbidden the processing that responds of request signal to the operation of any elevator volume speed, must wait for that delay process finishes after, could carry out the instruction of elevator high-speed cruising.The delay time of described delay procedure is not less than the elevator maintain and protection personnel from recovering behind the emergency stop switch to the time that can withdraw from elevator hoistways He Men district safely.
Embodiment two:
Be illustrated in figure 3 as another embodiment of the present invention, this embodiment is in the safety return circuit of existing elevator device, a plurality of emergency stop switchs in the elevator hoistways 1 are formed " or " logical relation, and, realize delay recovery to emergency stop switch by normally closed contact 7 series connection access safety return circuits by slug relay's control.The delay procedure that realize in detection loop 5 among the figure among the loop shown in the frame of broken lines 8 and first embodiment is similar, need not to increase the I/O loop of photoelectrical coupler and input central process unit, also need not revise former control program, directly use the delay recovery of the control realization of slug relay emergency stop switch.Its workflow is also similar, all is to make delay process by the recovery to emergency stop switch, guarantees that service personnel has the sufficient time to withdraw from Men Qu, thus the life security of actv. protection service personnel.
In sum, the present invention stops restore funcitons and makes delay process anxious, and actual is recovery to the hold function of elevator, and having delayed time comprises that personnel withdraw from the time of hoistway process, and for whole maintenance process, did not influence is to actual normal use of elevator.Simultaneously, only delay process is made in the recovery of emergency stop switch, rather than sudden-stop function is made delay process, therefore meet the elevator safety standard among the GB GB7588, sudden-stop function is not had inappropriate delay requirement.
Claims (7)
1. elevator car safety, comprise the safety return circuit that composes in series by emergency stop switch, safety sensor and safe operation contactless switch, it is characterized in that, also comprise and detect the loop, the signal detection end in described detection loop is connected with emergency stop switch, is used to detect the restoring signal of emergency stop switch; The signal output part in described detection loop is connected with apparatus for controlling elevator, is used for starting when detecting effective restoring signal of emergency stop switch delay procedure.
2. elevator car safety according to claim 1, it is characterized in that, described safety return circuit comprises at least one emergency stop switch, described emergency stop switch with " or " logical relation insert the I/O interface of apparatus for controlling elevator, by central process unit its signal is sampled.
3. elevator car safety according to claim 1, it is characterized in that, described safety return circuit comprises at least one emergency stop switch, described emergency stop switch form " or " logical relation, and be connected in series into safety return circuit by the normally closed contact by slug relay control, be used to realize delay recovery to emergency stop switch.
4. elevator car safety according to claim 1, it is characterized in that described detection loop comprises photoelectrical coupler, the signal input part of described photoelectrical coupler is connected with emergency stop switch, signal output part is connected with the I/O interface of apparatus for controlling elevator, is used to detect the restoring signal of emergency stop switch.
5. an elevator security control method is applied to the security recovery process of apparatus for controlling elevator to emergency stop switch, it is characterized in that, detect the restoring signal of emergency stop switch when apparatus for controlling elevator, and judge when it is effective, call delay procedure automatically, emergency stop switch is recovered after time-delay.
6. elevator security control method according to claim 5 is characterized in that, described apparatus for controlling elevator is carried out in the process of delay procedure, stops to respond the request signal of any elevator operation.
7. elevator security control method according to claim 5 is characterized in that, the delay time of described delay procedure is not less than the elevator maintain and protection personnel from recovering behind the emergency stop switch to the time that can withdraw from elevator hoistways He Men district safely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100291162A CN101348203B (en) | 2008-06-30 | 2008-06-30 | Elevator safety device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100291162A CN101348203B (en) | 2008-06-30 | 2008-06-30 | Elevator safety device and control method thereof |
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| Publication Number | Publication Date |
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| CN101348203A CN101348203A (en) | 2009-01-21 |
| CN101348203B true CN101348203B (en) | 2011-04-20 |
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| CN2008100291162A Active CN101348203B (en) | 2008-06-30 | 2008-06-30 | Elevator safety device and control method thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2452907A1 (en) * | 2010-11-11 | 2012-05-16 | Inventio AG | Elevator Safety Circuit |
| CN104355195B (en) * | 2014-10-27 | 2017-06-16 | 广东卓梅尼技术股份有限公司 | Safe torque turn-off function circuit and elevator safety control system |
| CN107098235A (en) * | 2016-02-23 | 2017-08-29 | 广东日创电梯有限公司 | Infrared elevator car top spatial operation safety system and method |
| JP6711418B2 (en) * | 2016-12-26 | 2020-06-17 | 三菱電機株式会社 | Recovery support system |
| CN113716403B (en) * | 2021-08-05 | 2023-08-01 | 日立楼宇技术（广州）有限公司 | Method and device for exiting elevator maintenance mode, computer equipment and storage medium |
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Application publication date: 20090121 Assignee: Hitachi elevator (Chinese) Co. Ltd. stone factory Assignor: Hitachi Elevator (China) Co., Ltd. Contract record no.: 2013440000492 Denomination of invention: Elevator safety device and control method thereof Granted publication date: 20110420 License type: Common License Record date: 20131028 |
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