CN104058309A - Elevator redundant electrical safety circuit and stopping control method - Google Patents
Elevator redundant electrical safety circuit and stopping control method Download PDFInfo
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- CN104058309A CN104058309A CN201410283111.8A CN201410283111A CN104058309A CN 104058309 A CN104058309 A CN 104058309A CN 201410283111 A CN201410283111 A CN 201410283111A CN 104058309 A CN104058309 A CN 104058309A
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Abstract
The invention discloses an elevator redundant electrical safety circuit, which comprises a first group of switches, a second group of switches, a third group of switches and a fourth group of switches. Trapped people can be guaranteed to be effectively evacuated in time by adding the third group of switches and the fourth group of switches in the traditional safety circuit on the premise of guaranteeing the safety of an elevator when the elevator fails, so that the elevator operation reliability is improved, secondary injury caused by elevator accidents can be reduced to further guarantee the safety of passengers. Meanwhile, the invention also discloses an elevator stopping method. According to the elevator stopping method, on the basis of guaranteeing the safe operation of the elevator, passengers in a lift car can be released as quickly as possible, the elevator people trapping rate can be effectively lowered, and the elevator operation reliability is improved.
Description
Technical field
The present invention relates to a kind of lift circuit, the particularly electric safety return circuit of a kind of elevator redundancy relates to a kind of according to a kind of elevator stopping method of the electric safety return circuit of elevator redundancy simultaneously.
Background technology
In recent years, rapidly, the situation that breaks down is a lot of for China's elevator industry development.In general, elevator faults causes the probability of personal casualty very low, but easily passenger is trapped in car, do not meet people to elevator serviceability, find fault promptness, save the rapid degree of stranded passenger, solve the requirements at the higher level such as fault convenience and validity.According to incompletely statistics, Guangzhou elevator malfunction event in 2013 occurs 16.7 average every day; In 2012, there is nearly thousand of elevator malfunction events in Xiamen City; On June 5th, 2013, Shanghai New World mall, 30 multi-section elevators have 10 multi-section elevators to occur oppressive event simultaneously; At present,, in recent years there are oppressive event more than 500 times in 40,000 of Changsha elevator total amounts.In the time of Lift out of order, especially when same community has some elevators to break down simultaneously, rescue group is difficult to the passenger in every elevator to succour in time, and passenger stranded be just easy to too for a long time accidents caused, for example just there is this type of accident in Chongqing City the beginning of this year, causes a passenger unfortunately to die.What therefore, how to avoid elevator malfunction accident is a very important problem.
Apparatus for controlling elevator can be divided into electric drive system and two main portions of electric control system substantially.Electric drive system mainly comprises elevator motor and gate switch door operation driving circuit.Electric control system peripheral hardware comprises interior choosing and outgoing call call button, floor sensors, door system electric safety switch, safety device switch etc., and control part comprises as 32 bit CPUs, controls with core parts compositions such as relay, communication function plates.
Typical electrical control system of elevator block diagram as shown in Figure 1, is mainly made up of panel block, leveling device etc. in drive system, control system, electrical safety loop, car.What wherein drive system completed is that towing machine drives function; What control system completed is elevator control and management function communication function responsible and elevator peripheral circuit, is the core of whole apparatus for controlling elevator; Electrical safety loop is that the switch series of all safety components of elevator is associated in a loop, when all safety component switches, all safety relay could adhesive in the situation in connecting, ensure that elevator machine and electric apparatus are all in the time of safe and effective state, elevator could obtain electric operation.
In the time that elevator normally moves, apparatus for controlling elevator breaks down suddenly or break down suddenly in electrical safety loop all can cause elevator out of service immediately, only have elevator after fault is eliminated again to put into operation, this is also two major causes that oppressive event occurs elevator.At present, still do not have effective means to prevent the generation of the oppressive event that stops causing because of elevator faults.
Summary of the invention
In view of this, the object of this invention is to provide a kind of elevator redundant safety loop, can ensure in the time that elevator breaks down, guaranteeing under elevator safety prerequisite, evacuate timely and effectively trapped personnel, thereby improve elevator reliability of operation, reduce the injury again that elevator faults causes, further ensure passenger safety, the present invention simultaneously also provides a kind of stop method of elevator.
One of object of the present invention is achieved through the following technical solutions, the electric safety return circuit of a kind of elevator redundancy, comprise first group of switch and second group of switch, described first group of switch comprises each layer of door switch, the first safety relay and a CUP, and described second group of switch comprises security window switch, expansion tightening wheel switch, pit buffer switch, the second safety relay and the 2nd CPU; Also comprise the first select switch, the second select switch, the 3rd group of switch and the 4th group of switch, described the 3rd group of switch comprises overspeed protection switch, emergency stop switch, safety gear switch, handwheel switch, governor switch, gate switch, the 3rd safety relay and the 3rd CPU, and described the 4th group of switch comprises limes superiors switch, smallest limit switch, the 4th safety relay and the 4th CPU; A wherein static contact of described the first select switch is connected with the moving contact of the second select switch, and another static contact of described the first select switch is connected with two static contacts of the second select switch; Another static contact of described the first select switch connect successively emergency stop switch, overspeed protection switch, safety gear switch, expansion tightening wheel switch, gate switch, handwheel switch and governor switch, described governor switch is through the 3rd safety relay ground connection, and described the 3rd CPU controls the break-make of the 3rd safety relay; Described speed limiting switch, smallest limit switch, limes superiors switch connect successively, and described limes superiors switch is through the 4th safety relay ground connection, and described the 4th CPU controls the break-make of the 4th safety relay; Described security window switch is through the 4th safety relay ground connection, and described security window switch, pit buffer switch, Room door switch connect successively, and described Room door switch is through the first safety relay ground connection, and a described CPU controls the break-make of the first peace relay; The coupling end of described Room door switch and pit buffer switch is through the second safety relay ground connection, and described the 2nd CPU controls the break-make of the second safety relay.
Further, described emergency stop switch comprises the sedan-chair top emergency stop switch, pit emergency stop switch and the control panel emergency stop switch that connect successively, and described control panel guard's valve is connected with overspeed protection switch.
Further, described Room door switch comprises the N layer Room door switch connecting successively, and N layer Room door switch is through the first safety relay ground connection.
Two of object of the present invention is achieved through the following technical solutions, a kind of elevator stopping method, and the method is specially:
1) in the time that the 3rd group of switch breaks down, stop elevator immediately;
2) in the time of the 4th group of switch et out of order
In the time of limes superiors switch et out of order: when 1. elevator service direction is downward, elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment; 2. elevator service direction is upwards time, if when elevator is now between K-1 layer and K layer, in the time of M≤K-1, elevator continues to move to after nearest stop stop and discharges passenger in railway carriage or compartment; When K-1 < M≤K elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment;
Instantly when limit switch et out of order: 1. elevator service direction is upwards time, and elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment; 2., when elevator service direction is downward, in the time of M >=2, elevator continues to move to nearest stop and discharges passenger in railway carriage or compartment; Otherwise elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment;
3) in the time of first group of switch et out of order
If N=M, elevator stop discharge passenger in railway carriage or compartment immediately;
In the time that elevator is descending, as N>M or N<M-1, elevator continues come downwards to nearest floor stop and discharge passenger in railway carriage or compartment with inspection speed; During as M>N>M-1, elevator continues the descending fault floor that can pass through, elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment;
In the time of ascending for elevator, as N<M or N>M+1, elevator continues go upward to nearest stop stop and discharge passenger in railway carriage or compartment with inspection speed; As M<N<M+1, elevator oppositely moves to nearest stop stop and discharges passenger in railway carriage or compartment with inspection speed immediately;
4), in the time of second group of switch et out of order, elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment;
K is the total number of plies of elevator, and N is fault Room door stop, and M is the real-time stop of elevator.
Useful technique effect:
1, the present invention can ensure in the time that elevator breaks down, and is guaranteeing, under elevator safety prerequisite, to evacuate timely and effectively trapped personnel, thereby improves elevator reliability of operation, reduces the injury again that elevator faults causes, further ensures passenger safety.
2, the present invention proposes elevator stopping method, is ensureing, on the basis of elevator safety operation, to discharge as early as possible passenger in car, can effectively reduce elevator malfunction rate, improve elevator serviceability, avoid larger safety misadventure and economic loss, there is actual value of service widely.
Brief description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is typical electrical control system of elevator block diagram;
Fig. 2 is electrical safety loop electric diagram;
Fig. 3 is elevator stopping method flow diagram of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment is only for the present invention is described, instead of in order to limit the scope of the invention.
For ensureing that elevator can move safely, many safety components are housed on elevator.So-called electrical safety loop, is all equipped with safety switch at the corresponding safety component of elevator exactly, only has when all safety switchs are all in the situation that connecting, and safety relay adhesive, elevator just possesses the condition of operation.In the safety return circuit of traditional elevator, only have first group of switch and second group of switch.
The reliability of elevator electrical safety circuit switching is existed by the probability breaking down in actual moving process that affects of the factors such as the quality of switch own, running environment, maintenance adjustment, and arbitrary switch contact action in traditional electrical safety loop, elevator just will be in halted state, causes elevator malfunction rate high.In order to reduce the oppressive rate of passenger, introduce the redundancy protecting design of electrical safety loop, as shown in Figure 2.
The electric safety return circuit of a kind of elevator redundancy, comprise first group of switch and second group of switch, described first group of switch comprises each layer of entrance hall switch 14, the first safety relay I and a CUP, and described second group of switch comprises security window switch 12, expansion tightening wheel switch 6, pit buffer switch 13, the second safety relay II and the 2nd CPU; Also comprise the first select switch S1, the second select switch S2, the 3rd group of switch and the 4th group of switch, described the 3rd group of switch comprises overspeed protection switch 4, emergency stop switch, safety gear switch 5, handwheel switch 8, governor switch 9, gate switch 7, the 3rd safety relay III and the 3rd CPU, and described the 4th group of switch comprises limes superiors switch 11, smallest limit switch 10, the 4th safety relay IV and the 4th CPU; The one static contact of described the first select switch is connected with the moving contact of the second select switch, and another static contact of described the first select switch is connected with two static contacts of the second select switch; Another static contact of described the first select switch connect successively emergency stop switch, overspeed protection switch, safety gear switch, expansion tightening wheel switch, gate switch, handwheel switch and governor switch, described governor switch is through the 3rd safety relay ground connection, and described the 3rd CPU controls the break-make of the 3rd safety relay; Described speed limiting switch, smallest limit switch, limes superiors switch connect successively, and described limes superiors switch is through the 4th safety relay ground connection, and described the 4th CPU controls the break-make of the 4th full peace relay; Described security window switch is through the 4th safety relay ground connection, and described security window switch, pit buffer switch, Room door switch connect successively, and described Room door switch is through the first safety relay ground connection, and a described CPU controls the break-make of the first safety relay; The coupling end of described Room door switch and pit buffer switch is through the second safety relay ground connection, and described the 2nd CPU controls the break-make of the second safety relay; Described emergency stop switch comprises the sedan-chair top emergency stop switch 1, pit emergency stop switch 2 and the control panel emergency stop switch 3 that connect successively, and described control panel guard's valve is connected with overspeed protection switch; Described Room door switch comprises the N layer Room door switch connecting successively, and N layer Room door switch is through the first safety relay ground connection.
If wherein the 3rd group of switch once motion continuation operation may cause device damage, after this group switch motion, elevator needs stop immediately, to avoid catastrophic effect; The 4th group of switch comprises limes superiors switch and smallest limit switch, mainly prevents that elevator from rushing to summit or squatting at the end, therefore, in the time of this switch motion, can carry out urgent electric operation in order to evacuate in time passenger; First group of switch comprises each layer of door switch, and such switch motion may be that a quilt is opened in addition on the one hand, or due to door switch bad contact, for preventing that external staff from being sheared and causing injures and deaths by car in the moment of opening the door, and should selectively control car and rerun; Protection and be convenient to succour passenger in elevator when second group of switch is intended to elevator faults; but when elevator normally moves; this group switch motion can not cause and cause elevator operation exception and personal casualty, therefore, can control elevator and continue to move to stop after nearest safe stop.
By the introduction to above-mentioned elevator safety switch grouping feature, after fault occurs, control system is selected appropriate stop scheme according to physical fault classification, as shown in Figure 3.
Suppose that the total number of plies of elevator is K (integer), fault Room door stop is N (integer), and the real-time stop of elevator is M (arithmetic number),
1), when I group switch breaks down, stop elevator immediately, waits for rescue personnel.
2) when II organizes switch et out of order
In the time of limes superiors switch et out of order: when 1. elevator service direction is downward, elevator can not be rushed to summit, elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment; 2. elevator service direction upwards time, if when elevator is now between K-1 layer and K layer, continues upwards operation and just may rush to summit, and therefore in the time of M≤K-1, elevator continues to move to after nearest stop stop and discharges passenger in railway carriage or compartment; When K-1 < M≤K elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment.
Instantly when limit switch et out of order: 1. elevator service direction is upwards time, and elevator can not be squatted at the end, and elevator can continue to move to nearest stop stop and discharge passenger in railway carriage or compartment; 2. when elevator service direction is downward, if when elevator is now in below the second stop, continues operation downwards and just may squat at the end, therefore, in the time of M >=2, elevator continues to move to nearest stop and discharges passenger in railway carriage or compartment; Otherwise elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment.
3) when III organizes switch et out of order
If N=M, elevator stop discharge passenger in railway carriage or compartment immediately.
In the time that elevator is descending, as N>M or N<M-1, elevator continues to come downwards in the process of nearest stop and can not pass through fault floor, therefore, can control elevator and continue come downwards to nearest floor stop and discharge passenger in railway carriage or compartment with inspection speed; During as M>N>M-1, elevator continues the descending fault floor that can pass through, the casualty accident that easily meets accident, and therefore elevator needs oppositely move to nearest stop stop and discharge passenger in railway carriage or compartment with inspection speed immediately.
In the time of ascending for elevator, as N<M or N>M+1, elevator continues to go upward in the process at nearest floor station and can not pass through fault floor, therefore, can control elevator and continue go upward to nearest stop stop and discharge passenger in railway carriage or compartment with inspection speed; As M<N<M+1, elevator continues to go upward in the process at nearest floor station and can not pass through fault floor, and elevator oppositely moves to nearest stop stop and discharges passenger in railway carriage or compartment with inspection speed immediately.
4) in the time of IV group switch et out of order, elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment.
In addition,, after Lift out of order, before maintainer's trouble-shooting hand reset, do not respond calling signal; After fault occurs, need automatically report comfort voice messaging to passenger in railway carriage or compartment, avoid passenger because meeting accident in a hurry.
The electric safety return circuit of redundancy is higher to treater computing power and logic synthesis Capability Requirement.Taking the elevator of 18 stops as example, ascending for elevator, in the time that elevator is between 10 layers and 11 layers, 11 layers of Room door et out of order.This Time Controller starts elevator to carry out emergency control, and first interim stop elevator, confirms as the door system fault of 11 layers, automatically plays the follow-up urgent operational process of voice message to passenger in railway carriage or compartment simultaneously; Then elevator comes downwards to 10 layers, opens gate and Room door, discharges passenger in car, and locked elevator simultaneously, cuts off host power supply, does not respond any calling signal, waits for that maintainer manually recovers; If this elevator faults not gate system failure, but when safety gear switch et out of order, in order to ensure passenger safety, elevator is stop immediately, cuts off host power supply, waits for maintainer's rescue.
According to redundant safety electric loop fault type, system controller is taked different emergency treatment schemes, once avoid electric loop in the past to have the simple way of fault with regard to stop elevator, can reduce greatly elevator malfunction rate, particularly at a large amount of elevators simultaneously when et out of order, maintainer can judge which elevator faults is that I class fault needs emergency relief, rescues people's promptness thereby greatly improve elevator, avoids causing larger casualty accident and economic loss.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (4)
1. the electric safety return circuit of elevator redundancy, comprise first group of switch and second group of switch, described first group of switch comprises each layer of door switch, the first safety relay and a CUP, and described second group of switch comprises security window switch, expansion tightening wheel switch, pit buffer switch, the second safety relay and the 2nd CPU; It is characterized in that: also comprise the first select switch, the second select switch, the 3rd group of switch and the 4th group of switch, described the 3rd group of switch comprises overspeed protection switch, emergency stop switch, safety gear switch, handwheel switch, governor switch, gate switch, the 3rd safety relay and the 3rd CPU, and described the 4th group of switch comprises limes superiors switch, smallest limit switch, the 4th safety relay and the 4th CPU; A wherein static contact of described the first select switch is connected with the moving contact of the second select switch, and another static contact of described the first select switch is connected with two static contacts of the second select switch; Another static contact of described the first select switch connect successively emergency stop switch, overspeed protection switch, safety gear switch, expansion tightening wheel switch, gate switch, handwheel switch and governor switch, described governor switch is through the 3rd safety relay ground connection, and described the 3rd CPU controls the break-make of the 3rd safety relay; Described speed limiting switch, smallest limit switch, limes superiors switch connect successively, and described limes superiors switch is through the 4th safety relay ground connection, and described the 4th CPU controls the break-make of the 4th safety relay; Described security window switch is through the 4th safety relay ground connection, and described security window switch, pit buffer switch, Room door switch connect successively, and described Room door switch is through the first safety relay ground connection, and a described CPU controls the break-make of the first peace relay; The coupling end of described Room door switch and pit buffer switch is through the second safety relay ground connection, and described the 2nd CPU controls the break-make of the second safety relay.
2. the electric safety return circuit of a kind of elevator redundancy according to claim 1; it is characterized in that: described emergency stop switch comprises the sedan-chair top emergency stop switch, pit emergency stop switch and the control panel emergency stop switch that connect successively, and described control panel guard's valve is connected with overspeed protection switch.
3. the electric safety return circuit of a kind of elevator redundancy according to claim 1, is characterized in that: described Room door switch comprises the N layer Room door switch connecting successively, and N layer Room door switch is through the first safety relay ground connection.
4. carry out elevator stopping control method according to electrical safety loop described in claim 1-3 any one, it is characterized in that:
1) in the time that the 3rd group of switch breaks down, stop elevator immediately;
2) in the time of the 4th group of switch et out of order
In the time of limes superiors switch et out of order: when 1. elevator service direction is downward, elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment; 2. elevator service direction is upwards time, if when elevator is now between K-1 layer and K layer, in the time of M≤K-1, elevator continues to move to after nearest stop stop and discharges passenger in railway carriage or compartment; When K-1 < M≤K elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment;
Instantly when limit switch et out of order: 1. elevator service direction is upwards time, and elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment; 2., when elevator service direction is downward, in the time of M >=2, elevator continues to move to nearest stop and discharges passenger in railway carriage or compartment; Otherwise elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment;
3) in the time of first group of switch et out of order
If N=M, elevator stop discharge passenger in railway carriage or compartment immediately;
In the time that elevator is descending, as N>M or N<M-1, elevator continues come downwards to nearest floor stop and discharge passenger in railway carriage or compartment with inspection speed; During as M>N>M-1, elevator continues the descending fault floor that can pass through, elevator immediately inverted running to nearest stop stop and discharge passenger in railway carriage or compartment;
In the time of ascending for elevator, as N<M or N>M+1, elevator continues go upward to nearest stop stop and discharge passenger in railway carriage or compartment with inspection speed; As M<N<M+1, elevator oppositely moves to nearest stop stop and discharges passenger in railway carriage or compartment with inspection speed immediately;
4), in the time of second group of switch et out of order, elevator continues to move to nearest stop stop and discharges passenger in railway carriage or compartment;
K is the total number of plies of elevator, and N is fault Room door stop, and M is the real-time stop of elevator.
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| CN201410283111.8A CN104058309B (en) | 2014-06-23 | 2014-06-23 | A kind of electric safety return circuit of elevator redundancy and stop control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105253737A (en) * | 2015-11-27 | 2016-01-20 | 沈阳市蓝光自动化技术有限公司 | Protection method for accidental moving of lift car |
| CN105438911A (en) * | 2016-01-08 | 2016-03-30 | 西继迅达（许昌）电梯有限公司 | Elevator capable of preventing elevator car from moving accidently |
| CN106829676A (en) * | 2017-02-22 | 2017-06-13 | 西继迅达（许昌）电梯有限公司 | A kind of accidental movement of elevator cage detection and protection system |
| CN107128765A (en) * | 2017-06-13 | 2017-09-05 | 重庆市特种设备检测研究院 | One kind elevator faults fault tolerant control method and system under oppressive state |
| US11787660B2 (en) | 2021-05-28 | 2023-10-17 | Otis Elevator Company | Brake monitoring circuitry, elevator system and brake monitoring method |
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| US11787660B2 (en) | 2021-05-28 | 2023-10-17 | Otis Elevator Company | Brake monitoring circuitry, elevator system and brake monitoring method |
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|---|---|
| CN104058309B (en) | 2016-05-04 |
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