CN110526048B - Control method and system for forced drive elevator - Google Patents
Control method and system for forced drive elevator Download PDFInfo
- Publication number
- CN110526048B CN110526048B CN201910730599.7A CN201910730599A CN110526048B CN 110526048 B CN110526048 B CN 110526048B CN 201910730599 A CN201910730599 A CN 201910730599A CN 110526048 B CN110526048 B CN 110526048B
- Authority
- CN
- China
- Prior art keywords
- elevator
- misoperation
- speed limiter
- contactor
- preset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/048—Testing of overspeed governor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
A control method of a forced drive elevator comprises the following steps: the method comprises the steps of monitoring the action of the speed limiter, judging whether the speed limiter has misoperation, and outputting a control signal to prevent the elevator system from being operated by mistake when the speed limiter is judged to have the misoperation, wherein the misoperation is caused by the misoperation of the speed limiter, and the operation of the elevator is controlled according to preset logic. The action of the speed limiter is monitored, the information of the misoperation of the speed limiter is obtained in real time, and when the misoperation of the speed limiter occurs, a control signal is output to prevent the execution of misoperation, so that the elevator is prevented from being braked due to the misoperation of the speed limiter, the impact on the elevator caused by braking the elevator is reduced, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the field of elevator control, in particular to a control method and a control system of a forced-driving elevator.
Background
In recent years, elevators, which are box-like cages equipped with electric motors as a power source for carrying people or goods in multi-story buildings, have been widely used as elevators according to the development of Chinese economy. The traction type elevator mainly comprises a traction machine (winch), a guide rail, a counterweight device, a safety device (such as a speed limiter, a safety gear, a buffer and the like), a signal control system, a car, a hoistway door and the like, and the traction type elevator and the forced driving type elevator are respectively installed in a hoistway and a machine room of a building. Usually, a steel wire rope is used for friction transmission, the steel wire rope bypasses a traction sheave, two ends of the steel wire rope are respectively connected with a car and a balance weight, and a motor drives the traction sheave to lift the car. The difference between the forced driving type elevator and the traction type elevator mainly lies in that the forced driving villa elevator is free of counterweight, the working principle of the forced driving villa elevator is similar to that of a winch, and counterweight measurement is omitted, so that the forced driving type elevator and the traction type elevator have the advantage that well resources can be saved. Strong drive elevators are commonly used in villas.
The speed limiter and safety tongs of elevator are paired and used for preventing the elevator from over-load and slippingThe speed limiter enables the safety tongs to act to tightly clamp the car between the guide rails on the two sides, namely, the car is braked between the guide rails. The working principle of the speed limiter is that when a lift car runs downwards, a speed limiter wheel is driven to rotate by steel wires, once the speed exceeds the rated speed, the speed limiter breaks a safety loop, a speed limiter safety switch acts, a control loop is broken, and the elevator stops running. At the moment, the steel wire rope of the speed limiter lifts up the safety gear connecting rod system arranged on the car beam by means of the friction force of the rope pulley or the rope clamping mechanism, the safety gear acts to forcibly stop the car on the guide rail, and meanwhile, the safety gear lifting rod operates the safety switch to act. However, due to the fact that the structure of the forced driving villa elevator is not used for measuring the weight, the elevator system stops outputting, the system brake has certain delay time, the brake coil loses electricity, the elevator can continuously fall, the locking action needs 300ms approximately, in the time period, the lift car freely falls, and the acceleration is about 9.8m/s2Before locking, the maximum speed Vmax is 9.8 × 0.3 ═ 2.94m/s, the rated elevator speed of the villa elevator is usually 0.5m/s, which is far more than 115% of the rated elevator speed, when the elevator goes down, the elevator running speed is high, which easily causes the speed limiter to generate misoperation, so that the speed limiter acts in the normal operation process which should not cause the fault of the speed limiter action or the speed limiter action, the speed limiter acts, when the safety tongs brake, the elevator bears a large impact force, and when the elevator is seriously, part of structural components can be deformed and scrapped.
Disclosure of Invention
The invention mainly solves the technical problems of avoiding the misoperation execution of the speed limiter and reducing the influence caused by the misoperation execution of the speed limiter.
According to a first aspect, an embodiment provides a control method of a forced drive elevator, comprising:
monitoring the action of the speed limiter;
judging whether the speed limiter has misoperation or not;
when the overspeed governor is judged to have a misoperation, outputting a control signal to prevent the execution of the misoperation of the elevator system, wherein the misoperation is caused by the misoperation of the overspeed governor;
and controlling the operation of the elevator according to preset logic.
In one possible implementation manner, the outputting a control signal to prevent the elevator system from performing misoperation when the overspeed governor is judged to have a misoperation comprises:
when the overspeed governor is judged to have the misoperation, the control signal is output to control the elevator system to execute the action opposite to the misoperation so as to prevent the elevator system from executing the misoperation.
In one possible implementation manner, the outputting a control signal to prevent the elevator system from performing the misoperation when the speed limiter is judged to have the misoperation further comprises:
acquiring preset delay time, wherein the preset delay time is the time for delaying the elevator system to execute misoperation, and the misoperation of the elevator system caused by the misoperation of the speed limiter is avoided;
and outputting the control signal within the preset delay time.
In one possible implementation manner, the determining whether the speed limiter malfunctions includes:
under the preset working condition, the speed limiter outputs a signal, and the safety circuit disconnection and/or the door lock circuit disconnection are detected, so that the misoperation of the speed limiter is judged.
In one possible implementation manner, when it is determined that the speed limiter has a malfunction, outputting the control signal to control the elevator system to perform an action opposite to the malfunction so as to prevent the elevator system from performing a malfunction includes:
when the speed limiter generates misoperation, a control signal for controlling the short circuit of the contactor of the safety loop and/or the contactor of the door lock loop is output so as to control the elevator system to execute the action opposite to the misoperation.
In one possible implementation manner, the controlling operation of the elevator according to the preset logic includes:
acquiring a preset deceleration curve;
and controlling the elevator to run according to a preset deceleration curve.
In one possible implementation manner, the controlling the operation of the elevator according to the preset deceleration curve comprises:
acquiring a preset safety distance;
monitoring the maximum torque output by an elevator system in real time;
when the output maximum torque reaches the rated maximum torque of the elevator system and the running distance of the elevator reaches the preset ratio of the preset safety distance, stopping outputting the control signal;
or acquiring a preset safety distance;
stopping outputting the control signal when detecting that the running distance of the elevator reaches a preset safety distance;
or monitoring the maximum torque output by the elevator system in real time;
and when the output maximum torque does not reach the rated maximum torque of the elevator system, controlling the elevator to run in a decelerating way according to the preset deceleration curve.
According to a second aspect, an embodiment provides a forced drive elevator system, comprising:
the main control board is used for monitoring the action of the speed limiter, judging whether the speed limiter has misoperation or not, outputting a control signal when the speed limiter is judged to have the misoperation, and controlling the operation of the elevator according to preset logic;
and the safety processing circuit is used for receiving the control signal and performing safety processing operation to prevent the elevator system from being operated by mistake, wherein the mistake operation is caused by the misoperation of the speed limiter.
In one possible implementation, the secure processing circuit includes:
the first short-circuit contactor is connected between the main control board and the safety loop contactor and used for receiving a control signal and short-circuit the safety loop;
and the second short-circuit contactor is connected between the main control board and the door lock loop contactor and used for receiving a control signal and short-circuit the door lock loop.
In one possible implementation manner, the secure processing circuit further includes:
delay circuit, one end is connected safety circuit contactor and/or lock return circuit contactor, operation contactor and/or band-type brake contactor are connected to the other end for export a predetermined delay time, work as safety circuit contactor/or when lock return circuit contactor disconnection, operation contactor and/or band-type brake contactor pass through delay circuit predetermined delay time delays the disconnection.
The embodiment of the invention has the following beneficial effects:
a control method of a forced drive elevator comprises the following steps: the method comprises the steps of monitoring the action of the speed limiter, judging whether the speed limiter has misoperation, and outputting a control signal to prevent the elevator system from being operated by mistake when the speed limiter is judged to have the misoperation, wherein the misoperation is caused by the misoperation of the speed limiter, and the operation of the elevator is controlled according to preset logic. The action of the speed limiter is monitored, the information of the misoperation of the speed limiter is obtained in real time, and when the misoperation of the speed limiter occurs, a control signal is output to prevent the execution of misoperation, so that the elevator is prevented from being braked due to the misoperation of the speed limiter, the impact on the elevator caused by braking the elevator is reduced, and the use experience of a user is improved.
A forced drive elevator system comprising: the safety processing circuit is used for receiving the control signal and carrying out safety processing operation to prevent the elevator system from being operated by mistake, wherein the mistake operation is caused by the mistake operation of the speed limiter. The main control board monitors the action of the speed limiter, and when the misoperation of the speed limiter is monitored, a control signal is output to the safety processing circuit, the safety processing circuit carries out safety processing on the misoperation, the elevator is prevented from being braked and stopped due to the misoperation of the speed limiter, the impact force influence on the elevator caused by braking and stopping the elevator is reduced, and the use experience of a user is improved.
Drawings
Fig. 1 is a schematic view of a hoist structure of a forced-driving elevator;
fig. 2 is a schematic structural view of a heavy-drive elevator;
fig. 3 is a schematic structural diagram of a forced drive elevator system of an embodiment;
fig. 4 is a circuit diagram of a brake of a forced drive elevator system of an embodiment;
fig. 5 is a flow chart of a control method of the forced driving elevator of the embodiment;
fig. 6 is a flow chart of a control method of a forced driving elevator of another embodiment;
FIG. 7 is a schematic illustration of an acceleration/deceleration curve of an embodiment;
figure 8 is a schematic illustration of a deceleration curve according to an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The structure of the forced-driving elevator mainly comprises a power system, a guide system, a car, a door system, an electric dragging system, an electric control system and a safety protection device. Wherein the power system includes a hoist, as shown in fig. 1. The guide system comprises a car guide rail, a guide shoe, a guide rail frame and the like. The car includes car frame and car. The door system comprises a car door, a landing door, a door lock, a door opening machine and a door closing anti-pinch device. The electric drive system comprises a power supply system, a motor speed regulating device and the like. The electric control system comprises a main control board, a calling box, a control cabinet, a floor indication, a leveling switch and a travel switch. The safety protection device comprises a speed limiter, a safety clamp, a buffer end station protection, an overspeed protection, a phase failure and phase failure protection, an upper limit, a lower limit, a layer door lock, a car door electric interlocking device and the like.
Referring to fig. 1 and 2, the working process of the forced driving elevator is briefly described: the calling box receives an input signal, the electrical control system receives an instruction, the winch is electrified to rotate the winding drum to rotate, then the steel coil drives the steel wire rope, the steel wire rope drives the car to do linear motion along the rigid guide rail, the car and goods are forcedly lifted and descended, one end of the steel wire rope is connected with the winding drum, the other end of the steel wire rope is directly connected to the car, and the steel wire rope is forcedly pulled by mechanical force.
Example one
Referring to fig. 3, an embodiment of the present invention provides a forced drive elevator system, including:
and the main control board is used for monitoring the action of the speed limiter, judging whether the speed limiter has misoperation or not, outputting a control signal when judging that the speed limiter has the misoperation, and controlling the operation of the elevator according to preset logic.
In the embodiment of the invention, the main control board controls the starting, running direction, speed reduction and stopping of the elevator motor and the door motor, and manages the instruction signals of the display of each landing, the call of the landing, the instruction in the elevator car, safety protection and the like.
In the embodiment of the invention, the speed limiter has the function that once the elevator has the phenomena of overload, slipping, control runaway and the like, the speed limiter and the safety tongs can act to brake the elevator car between the guide rails. When the lift car moves, the steel wire rope of the speed limiter drives the speed limiter wheel to rotate, once the descending speed of the lift car exceeds over 115 percent of the rated speed, an electric switch on the speed limiter acts firstly to cut off a safety loop of the elevator, the speed limiter slows down the elevator which is running at an overspeed by cutting off a power supply and starting a mechanical brake, meanwhile, the safety tongs play a role, when the lift car continues to descend, the traction force acting on the rope of the speed limiter lifts a mechanical connecting rod upwards to drive the pulling effect of the safety tongs, under the pulling effect of the safety tongs, the wedges are quickly lifted, and the guide rail is clamped through the friction and the pressure between the wedges and the guide rail, so that the lift car stops moving quickly.
In the embodiment of the invention, the main control board monitors the action of the speed limiter, so that the action is avoided when the speed limiter does not act, and the elevator is quickly stopped by a method of cutting off a power supply and starting a mechanical brake after the misoperation occurs, thereby bringing great impact force to the elevator. Whether the safety loop and/or the door lock loop are disconnected or not is monitored, the fault operation of the speed limiter is judged by combining the current running state of the elevator, and the fault operation of the speed limiter is judged when the elevator descends and one or two loops of the safety loop or the door lock loop are detected to be disconnected. As an example, the governor may malfunction: when the elevator is switched from the running state to the maintenance state, the maintenance state is the slow car running state, when the elevator is switched from the fast car running state to the slow car running state, the elevator control system stops outputting, and the system brake has certain delay time, so that the elevator can continuously drop, and the misoperation of the speed limiter is caused. Or the elevator control system stops outputting due to the fault of the elevator, and the system brake has certain delay time, so that the elevator can drop, and further the misoperation of the speed limiter is caused. The fault or state switching in the ascending process can not cause the speed limiter to act, so that whether the speed limiter generates misoperation when the elevator ascends is not required to be judged.
And the safety processing circuit is used for receiving the control signal and performing safety processing operation to prevent the elevator system from being operated by mistake, wherein the mistake operation is caused by the misoperation of the speed limiter.
In the embodiment of the invention, the safety processing circuit comprises a first short-circuit contactor connected between the main control board and the safety loop contactor, and the first short-circuit contactor is used for receiving a control signal and short-circuit the safety loop. And the second short-circuit contactor is connected between the main control board and the door lock loop contactor and used for receiving a control signal and short-circuit the door lock loop.
In the embodiment of the invention, a port X25 of a main control board is used for connecting a high-voltage safety loop, a port X26 is used for connecting a first door lock loop, a port X27 is used for connecting a second door lock loop, a port COM is connected with a common terminal, a port Y1 is used for connecting an operating contactor, a port Y2 is used for connecting a brake contactor, a port Y3 is used for connecting a safety loop short-circuit contactor, namely a first short-circuit contactor, a port Y4 is used for connecting a door lock loop short-circuit contactor, namely a second short-circuit contactor, in the figure, KMS1 is the first short-circuit contactor, KMS2 is the second short-circuit contactor, KMS11 is a short-circuit switch of the first short-circuit contactor, KMS22 is a short-circuit switch of the second short-circuit contactor, KDY is an operating contactor, a resistor and a capacitor are connected in parallel to the operating contactor KDY, KLZ is connected in parallel to the brake contactor through a resistor and a capacitor. Referring to fig. 4, which is a circuit diagram of a system contracting brake, KDYY is a switch of an operating contactor, KLZZ is a switch of a contracting brake contactor, BK is a contracting brake, and the contracting brake is connected in parallel through a resistor RZ and a diode DZ, and when the system stops outputting, the contracting brake is disconnected due to power loss. The main control board detects the states of a safety loop and a door lock loop through a port X25, a port X26 and a port X27, when the safety loop and/or the door lock loop are detected to be disconnected and the elevator running direction is downward, the speed limiter is judged to be in misoperation, a control signal is output, a port Y3 outputs a safety loop short-circuit contactor control signal and a port Y4 outputs a door lock loop short-circuit contactor control signal, so that a first short-circuit contactor KMS1 and a second short-circuit contactor KMS2 coil are electrified to act, then the first short-circuit contactor KMS1 short-circuits the safety loop through a short-circuit switch KMS11 connected to the safety loop, the second short-circuit contactor KMS2 short-circuits the door lock loop through a short-circuit switch KMS22 connected to the door lock loop, the phenomenon that the safety loop and/or the door lock loop are disconnected due to the misoperation of an elevator speed limiter is avoided, and the safety loop and the door lock loop is disconnected, the hardware circuit directly disconnects the operation contactor and the band-type brake contactor, so that when the speed limiter malfunctions, the operation contactor and the band-type brake contactor are not disconnected, the main control board is still connected with the motor, the electric control system outputs torque to control the motor not to drop, and the motor is decelerated and stopped according to the output torque.
In an embodiment of the present invention, the secure processing circuit further includes: delay circuit, one end is connected safety circuit contactor and/or lock return circuit contactor, operation contactor and/or band-type brake contactor are connected to the other end for export a predetermined delay time, work as safety circuit contactor/or when lock return circuit contactor disconnection, operation contactor and/or band-type brake contactor pass through delay circuit predetermined delay time delays the disconnection.
In the embodiment of the invention, the safety circuit and the door lock circuit control the operating contactor and the brake contactor through a delay circuit, and when any one of the safety circuit and the door lock circuit is disconnected, the elevator brake and the operating contactor are automatically disconnected after the delay time T of the delay circuit. After the safety loop and the door lock loop are sent into the chip of the elevator control system for internal detection, the short circuit can be ensured to be completed within T time through the short circuit contactor signal triggered above. So that make short circuit contactor can short circuit safety circuit and lock return circuit in T time, avoid the disconnection of operation contactor and band-type brake contactor that safety circuit or lock disconnection arouse, exported control signal in the predetermined delay time promptly, then after having passed predetermined delay time, operation contactor and band-type brake contactor also can not break off. The delay circuit is used for avoiding the misoperation of the elevator system immediately when one or two of the safety circuit and/or the door lock circuit is disconnected, namely the operation contactor and the brake contactor are disconnected immediately, the disconnection of the main contactor is avoided through the delay circuit and the short-circuit contactor, the aim is to solve the problem of forced drive of the elevator car and the problem that the misoperation of the speed limiter stops by a mechanical brake.
The embodiment of the invention has the following outstanding characteristics:
a forced drive elevator system comprising: the safety processing circuit is used for receiving the control signal and carrying out safety processing operation to prevent the elevator system from being operated by mistake, wherein the mistake operation is caused by the mistake operation of the speed limiter. The main control board monitors the action of the speed limiter, and when the misoperation of the speed limiter is monitored, a control signal is output to the safety processing circuit, the safety processing circuit carries out safety processing on the misoperation, the elevator is prevented from being braked and stopped due to the misoperation of the speed limiter, the impact force influence on the elevator caused by braking and stopping the elevator is reduced, and the use experience of a user is improved.
When the external maintenance switch of the elevator is switched to the normal state from the maintenance state, if the elevator is in maintenance operation before switching, the elevator decelerates to stop according to the deceleration of maintenance, and the elevator is switched to the normal state after stopping. When the elevator is switched from the normal state to the maintenance state, the elevator operation mode is directly switched from the maintenance mode to the operation mode if the elevator was in the stop state before that. If the elevator is in a running state, when the elevator runs upwards, if the elevator detects that the safety loop is disconnected or the door lock loop is disconnected, the elevator control system stops outputting, and the internal contracting brake is closed. And meanwhile, the output of a contactor of a short-circuit door lock loop and a safety loop controlled by a main control board of the elevator control system is invalid. When the elevator descends, the control method of the forced driving elevator according to the second embodiment is used for controlling the elevator. The speed limiter does not generate misoperation when the elevator ascends, so monitoring prevention is not needed, and the misoperation generates when the elevator descends, so monitoring prevention is needed.
Example two
Referring to fig. 5, the control method for a forced driving elevator provided in the embodiment of the present invention can be operated by a main control board, and at least includes steps S11 to S14, which are as follows:
step S11: the action of the speed limiter is monitored.
In the embodiment of the invention, the main control board monitors the action of the speed limiter in real time and detects whether the speed limiter outputs signals or not.
Step S12: and judging whether the speed limiter has misoperation or not.
In the embodiment of the invention, the speed limiter acts because the speed limiter detects that the running speed of the elevator is overspeed, the throwing block on the speed limiter generates centrifugal force which is thrown outwards due to the high-speed rotation of the speed limiter, and when the speed limiter is overspeed, the electric safety switch of the speed limiter is firstly thrown by one bolt on the throwing block to cut off a safety circuit. The misoperation of the speed limiter is the action in the process of normal fault (fault which does not cause the action of the speed limiter) or normal operation (operation which does not cause the action of the speed limiter), and in the normal action or the normal operation, when an elevator descends, the elevator often stops output because an elevator control system and a system brake has certain delay time, so that the elevator continuously falls down and freely falls to cause the misoperation of the speed limiter. For example, the normal mode of the elevator is switched to the maintenance mode, the normal operation is not the elevator fault, and the speed limiter does not act at the moment.
In one possible implementation manner, the determining whether the speed limiter malfunctions includes:
under the preset working condition, the speed limiter outputs a signal, and the safety circuit disconnection and/or the door lock circuit disconnection are detected, so that the misoperation of the speed limiter is judged.
In one possible implementation manner, the preset operating condition includes:
when the elevator moves downwards, the elevator system stops outputting, and the speed limiter does not work under the condition that the system brake is delayed.
In the embodiment of the invention, the main control board detects that the elevator is in a descending state, and the safety circuit is disconnected and/or the door lock circuit is disconnected, so that the fault operation of the speed limiter can be judged. Or when the elevator system stops outputting and the system brake is delayed, the elevator is detected to descend under the working condition that the speed limiter does not act, and the safety loop is disconnected and/or the door lock loop is disconnected, and the fact that the speed limiter malfunctions is judged.
In the embodiment of the invention, when the elevator descends, the output signal of the speed limiter is detected, the elevator detects the disconnection of a safety loop or a door lock loop, the misoperation of the speed limiter is judged, when the elevator descends, the system stops outputting due to the fault or state switching of the elevator system, a system band-type brake coil does not lose power, a band-type brake is an electromechanical device which prevents the elevator from moving again when an elevator car is static and a motor is in a power-off state, the delay of the system band-type brake is delayed, the elevator can freely fall because of not stopping in time, so that the elevator speed is over-speed, the speed limiter generates misoperation, the safety loop and/or a door lock loop are disconnected, after the safety loop is disconnected or the door lock loop is disconnected, a hardware circuit directly disconnects a running contactor and the band-type brake contactor, and an electric control system cannot control the motor to stop according to the output torque, the overspeed governor starts the mechanical brake to enable the elevator to be in an extremely-fast stop state, and then when the safety tongs brake, the elevator can bear great impact force, and part of structural parts can be deformed and scrapped in severe cases.
Step S13: and when the overspeed governor is judged to have the misoperation, outputting a control signal to prevent the elevator system from being operated by the misoperation, wherein the misoperation is caused by the misoperation of the overspeed governor.
In one possible implementation manner, the outputting a control signal to prevent the elevator system from performing misoperation when the overspeed governor is judged to have a misoperation comprises:
when the overspeed governor is judged to have the misoperation, the control signal is output to control the elevator system to execute the action opposite to the misoperation so as to prevent the elevator system from executing the misoperation.
In one possible implementation manner, when it is determined that the speed limiter has a malfunction, outputting the control signal to control the elevator system to perform an action opposite to the malfunction so as to prevent the elevator system from performing a malfunction includes:
when the speed limiter generates misoperation, a control signal for controlling the short circuit of the contactor of the safety loop and/or the contactor of the door lock loop is output so as to control the elevator system to execute the action opposite to the misoperation.
In the embodiment of the invention, the main control board outputs a control signal, the contactors of the door lock short circuit loop and the safety loop controlled by the elevator control system output effectively, namely, the short circuit control signal is output to control the short connection of the disconnected door lock loop or the contactor of the safety loop, so that the situation that a hardware circuit directly disconnects the operating contactor and the band-type brake contactor after the safety loop or the door lock loop is disconnected is avoided. When the operating contactor is disconnected, the connection between the electric control system and the main machine is cut off, the output torque of the electric control system cannot be transmitted to the main machine to maintain the main machine not to fall down, and then the elevator is in an extremely-fast stop state through the speed limiter and the mechanical brake. Through the contactor of short circuit lock return circuit or safety circuit for the elevator system can not take place the maloperation because of the malfunction of overspeed governor, can not break off operation contactor and band-type brake contactor promptly, and then can be by electric control system according to the logical control elevator stop operation that predetermines, avoids making the elevator be in one kind through mechanical brake and the state that stops rapidly.
In one possible implementation manner, the outputting a control signal to prevent the elevator system from performing the misoperation when the speed limiter is judged to have the misoperation further comprises:
acquiring preset delay time, wherein the preset delay time is the time for delaying the elevator system to execute misoperation, and the misoperation of the elevator system caused by the misoperation of the speed limiter is avoided;
and outputting the control signal within the preset delay time.
In the embodiment of the invention, when the misoperation of the speed limiter is determined, in order to avoid the misoperation of the elevator system caused by the misoperation of the speed limiter immediately, namely to avoid the disconnection of the operating contactor and the brake contactor caused by the disconnection of the safety circuit or the door lock circuit immediately, a preset delay time is output, so that the misoperation of the elevator system is triggered by the misoperation of the speed limiter after the preset delay time, the elevator brake and the operating contactor are possibly disconnected after the preset delay time, but because a control signal is output within the preset delay time, the elevator system is controlled to execute the action opposite to the misoperation according to the control signal, so as to prevent the execution of the misoperation of the elevator system, namely the contactor of the door lock circuit or the safety circuit is short-circuited within the preset delay time, and further after the preset delay time, the operating contactor and the band-type brake contactor can not be disconnected.
Step S14: and controlling the operation of the elevator according to preset logic.
Referring to fig. 6, in one possible implementation, the controlling of the operation of the elevator according to the preset logic includes steps S21 to S22:
step S21: acquiring a preset deceleration curve;
step S22: and controlling the elevator to run according to a preset deceleration curve.
In the embodiment of the present invention, the preset deceleration curve may be obtained by calculating a piecewise function, and the preset deceleration curve is determined by setting relevant parameters of the piecewise function. Referring to fig. 7, the elevator is operated according to a preset acceleration and deceleration curve, the preset acceleration and deceleration curve comprises acceleration, initial rapid acceleration, final rapid acceleration, deceleration, initial rapid deceleration and final rapid deceleration, wherein the rapid acceleration or rapid deceleration is a change rate representing the acceleration/deceleration, and the change rate of the speed is preset to 0.3m/s in the initial rapid acceleration F03.013At an acceleration F03.00, the acceleration is preset to 0.6m/s2When the rapid deceleration F03.02 is started, the speed change rate is preset to 0.3m/s3At the time of the rapid deceleration F03.04 in the initial stage, the rate of change of the speed is set to 0.3m/s3At the acceleration F03.03, the acceleration is preset to 0.6m/s2When the final stage of the rapid deceleration F03.05 is ended, the rate of change of the speed is preset to 0.3m/s3When the parameter value is increased, the acceleration and deceleration curve becomes steep and fast, and when the parameter value is decreased, the acceleration and deceleration curveThe speed will be reduced and the acceleration and deceleration will be slowed down. The preset deceleration curve is the curve of the rapid deceleration F03.04 in the beginning section, the acceleration F03.03 and the rapid deceleration F03.05 in the ending section.
In the embodiment of the invention, referring to fig. 8, the deceleration curve method can be obtained by running the elevator fully downwards to the rated speed, and the elevator deceleration curve is defined to contain 1.000m/s of sudden deceleration increment J2 according to the sudden deceleration increment J13Is an initial value, and is increased by 0.200m/s each time3And respectively recording the maximum output torque of the elevator, wherein when the output torque of the elevator reaches 80% of the maximum torque of the elevator, the rated current output by the controller is the output rated torque, and the rated output current is the rated current of the elevator main machine. It is compared whether the output torque reaches 80% of the rated torque. The current sudden deceleration at the beginning section of the deceleration curve J1 and the current sudden deceleration at the end section of J2 are used as the preset deceleration curve deceleration, and the maximum output torque current is tested by changing a sudden deceleration increment J1 and a sudden deceleration increment J2, wherein the sudden deceleration increment J1 and the sudden deceleration increment J2 are consistent to the final value. A large deceleration curve value can be obtained by the above processing. So that the deceleration distance of the elevator will be shorter. The functions can be automatically obtained through an elevator control system without manual operation.
In one possible implementation manner, the controlling the operation of the elevator according to the preset deceleration curve comprises:
acquiring a preset safety distance;
monitoring the maximum torque output by an elevator system in real time;
when the output maximum torque reaches the rated maximum torque of the elevator system and the running distance of the elevator reaches the preset ratio of the preset safety distance, stopping outputting the control signal;
or acquiring a preset safety distance;
stopping outputting the control signal when detecting that the running distance of the elevator reaches a preset safety distance;
or monitoring the maximum torque output by the elevator system in real time;
and when the output maximum torque does not reach the rated maximum torque of the elevator system, controlling the elevator to run in a decelerating way according to the preset deceleration curve.
In the embodiment of the invention, after the control signal is output to prevent the misoperation of the elevator system from being executed, the elevator is decelerated and stopped according to the preset logic, so that the elevator is stopped according to the preset deceleration curve, and the elevator is prevented from being in a rapid stop state. Danger can appear in order to avoid long-time short circuit lock return circuit and safety circuit contactor. A preset safety distance is obtained, wherein the preset safety distance can be set to 10cm, and the general villa elevator is usually below 0.5m/s speed according to the deceleration of 1m/s2The required deceleration distance is 12.5cm, and the normal abnormal deceleration parking deceleration ratio is 1m/s2Much larger, so the actual deceleration distance is much smaller than 12.5 cm. The preset safety example is smaller than 12.5cm when the safety example is 10cm, and the safe operation of the elevator can be ensured. When the output control signal is taken as a starting point, namely the output of the short-circuit contactor is recorded as a starting point, the current height is recorded as an initial height, the initial height can be obtained by reading the running distance of the elevator, or the height is directly detected by a position sensor, the elevator can continue to descend, and if the current height is detected to be below the preset safety distance of the initial height, the elevator system stops sending the short-circuit control signal. The normal operating range of elevator is between bottom and top layer, install limit switch under the bottom flat bed, and limit switch and flat bed switch distance be 15cm, be greater than preset safe distance, the elevator all forces the speed reduction switch at bottom and top layer, this switch purpose is for restricting the functioning speed at the elevator at both ends, be 0.1m/s usually, can stop the elevator through forcing the speed reduction switch after the elevator operation is apart from bottom and top layer certain distance promptly, avoided the elevator operation to be about to arrive at bottom or top layer because of the functioning distance does not reach preset safe distance and danger appears.
In the embodiment of the invention, referring to fig. 8, when an elevator control system decelerates according to a set deceleration curve, the elevator control system outputs the maximum torque in real time during the deceleration process, if the rated maximum torque of the elevator control system is reached during the deceleration process, the current elevator load may be heavier, and the situation that the speed of the integrated machine cannot be decelerated according to the set curve speed may exist, so that if the preset ratio of the preset safety distance is reached, the elevator main control system actively disconnects a brake to enable the brake to participate in the braking of the elevator, so that the elevator stops running. The preset ratio is preferably 2/3, when the output maximum torque is reached and the height reaches preset 2/3, the brake loop is cut off, the brake coil is de-energized, and the car is braked and stopped.
And if the running output torque of the elevator does not reach the rated maximum torque of the elevator control system in the deceleration process, the elevator decelerates normally according to the preset deceleration curve.
In one possible implementation manner, the controlling the operation of the elevator according to the preset logic further comprises:
when the elevator stops running, the control signal is stopped to be output.
In the embodiment of the invention, the elevator stops according to the preset deceleration curve, and the control signal is stopped to be output when the elevator stops running, so that the condition that the contactor of the door lock loop or the safety loop inhibits short circuit is avoided.
The embodiment of the invention has the following outstanding characteristics:
a control method of a forced drive elevator comprises the following steps: the method comprises the steps of monitoring the action of the speed limiter, judging whether the speed limiter has misoperation, and outputting a control signal to prevent the elevator system from being operated by mistake when the speed limiter is judged to have the misoperation, wherein the misoperation is caused by the misoperation of the speed limiter, and the operation of the elevator is controlled according to preset logic. The action of the speed limiter is monitored, the information of the misoperation of the speed limiter is obtained in real time, and when the misoperation of the speed limiter occurs, a control signal is output to prevent the execution of misoperation, so that the elevator is prevented from being braked due to the misoperation of the speed limiter, the impact on the elevator caused by braking the elevator is reduced, and the use experience of a user is improved.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A control method of a forced drive elevator is characterized by comprising the following steps:
monitoring the action of the speed limiter;
judging whether the speed limiter has misoperation or not;
when the overspeed governor is judged to have a misoperation, outputting a control signal to prevent the execution of the misoperation of the elevator system, wherein the misoperation is caused by the misoperation of the overspeed governor;
and controlling the operation of the elevator according to preset logic.
2. The control method of the forced driving elevator as claimed in claim 1, wherein the outputting the control signal to prevent the elevator system from performing the misoperation when the overspeed governor is judged to have the malfunction comprises:
when the overspeed governor is judged to have the misoperation, the control signal is output to control the elevator system to execute the action opposite to the misoperation so as to prevent the elevator system from executing the misoperation.
3. The control method of the forced driving elevator as claimed in claim 2, wherein the outputting the control signal to prevent the elevator system from performing the misoperation when the overspeed governor is judged to have the malfunction further comprises:
acquiring preset delay time, wherein the preset delay time is the time for delaying the elevator system to execute misoperation, and the misoperation of the elevator system caused by the misoperation of the speed limiter is avoided;
and outputting the control signal within the preset delay time.
4. The method for controlling the forced driving elevator as claimed in claim 2, wherein the judging whether the speed limiter malfunctions comprises:
under the preset working condition, the speed limiter outputs a signal, and the safety circuit disconnection and/or the door lock circuit disconnection are detected, so that the misoperation of the speed limiter is judged.
5. The control method of the forced driving elevator as claimed in claim 4, wherein the outputting the control signal to control the elevator system to perform an action opposite to the malfunction when the governor is judged to have the malfunction, so as to prevent the elevator system from performing the malfunction comprises:
when the speed limiter generates misoperation, a control signal for controlling the short circuit of the contactor of the safety loop and/or the contactor of the door lock loop is output so as to control the elevator system to execute the action opposite to the misoperation.
6. The control method of the forced driving elevator according to any one of claims 1 to 5, wherein the controlling the operation of the elevator according to the preset logic comprises:
acquiring a preset deceleration curve;
and controlling the elevator to run according to a preset deceleration curve.
7. The control method of the forced driving elevator as claimed in claim 6, wherein the controlling the operation of the elevator according to the preset deceleration curve comprises:
acquiring a preset safety distance;
monitoring the maximum torque output by an elevator system in real time;
when the output maximum torque reaches the rated maximum torque of the elevator system and the running distance of the elevator reaches the preset ratio of the preset safety distance, stopping outputting the control signal;
or the controlling the operation of the elevator according to the preset deceleration curve comprises:
acquiring a preset safety distance;
stopping outputting the control signal when detecting that the running distance of the elevator reaches a preset safety distance;
or the controlling the operation of the elevator according to the preset deceleration curve comprises:
monitoring the maximum torque output by an elevator system in real time;
and when the output maximum torque does not reach the rated maximum torque of the elevator system, controlling the elevator to run in a decelerating way according to the preset deceleration curve.
8. A forced drive elevator system, comprising:
the main control board is used for monitoring the action of the speed limiter, judging whether the speed limiter has misoperation or not, outputting a control signal when the speed limiter is judged to have the misoperation, and controlling the operation of the elevator according to preset logic;
and the safety processing circuit is used for receiving the control signal and performing safety processing operation to prevent the elevator system from being operated by mistake, wherein the mistake operation is caused by the misoperation of the speed limiter.
9. The forced-induction elevator system of claim 8, wherein the safety processing circuit comprises:
the first short-circuit contactor is connected between the main control board and the safety loop contactor and used for receiving a control signal and short-circuit the safety loop;
and the second short-circuit contactor is connected between the main control board and the door lock loop contactor and used for receiving a control signal and short-circuit the door lock loop.
10. The forced-induction elevator system of claim 9, wherein the safety processing circuit further comprises:
delay circuit, one end is connected safety circuit contactor and/or lock return circuit contactor, operation contactor and/or band-type brake contactor are connected to the other end for export a predetermined delay time, work as safety circuit contactor/or when lock return circuit contactor disconnection, operation contactor and/or band-type brake contactor pass through delay circuit predetermined delay time delays the disconnection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910730599.7A CN110526048B (en) | 2019-08-08 | 2019-08-08 | Control method and system for forced drive elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910730599.7A CN110526048B (en) | 2019-08-08 | 2019-08-08 | Control method and system for forced drive elevator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110526048A CN110526048A (en) | 2019-12-03 |
| CN110526048B true CN110526048B (en) | 2022-01-07 |
Family
ID=68662180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910730599.7A Active CN110526048B (en) | 2019-08-08 | 2019-08-08 | Control method and system for forced drive elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110526048B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112193372A (en) * | 2020-10-14 | 2021-01-08 | 上海外高桥造船有限公司 | Superelevation type passenger liner is with tower device of going on board |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB421827A (en) * | 1933-07-01 | 1935-01-01 | Ernest Hunter Oliver | Improvements in and connected with safety controls for winding, haulage, or lifting gears |
| US4457404A (en) * | 1982-05-26 | 1984-07-03 | Westinghouse Electric Corp. | Elevator system |
| CN2584579Y (en) * | 2002-08-26 | 2003-11-05 | 周沛凝 | Microcomputer control board for construction lift equipment |
| KR20050004395A (en) * | 2003-07-02 | 2005-01-12 | (주)수림 | Governor |
| CN1930072A (en) * | 2004-10-27 | 2007-03-14 | 三菱电机株式会社 | Emergency stop device for elevator |
| CN201525681U (en) * | 2009-10-21 | 2010-07-14 | 允成机电科技(上海)有限公司 | Knapsack-type home elevator mechanical stopping device |
| CN103130065A (en) * | 2011-11-28 | 2013-06-05 | 株式会社日立制作所 | Elevator operation management system |
| CN202988462U (en) * | 2012-12-05 | 2013-06-12 | 江南嘉捷电梯股份有限公司 | Protective device of elevator |
| JP2014122079A (en) * | 2012-12-20 | 2014-07-03 | Hitachi Ltd | Elevator and automatic elevator-landing device |
| CN204124972U (en) * | 2014-05-27 | 2015-01-28 | 姚长云 | A kind of can not the tension wheel switching device of misoperation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9601945B2 (en) * | 2013-01-29 | 2017-03-21 | Reynolds & Reynolds Electronics, Inc. | Emergency back-up power system for traction elevators |
-
2019
- 2019-08-08 CN CN201910730599.7A patent/CN110526048B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB421827A (en) * | 1933-07-01 | 1935-01-01 | Ernest Hunter Oliver | Improvements in and connected with safety controls for winding, haulage, or lifting gears |
| US4457404A (en) * | 1982-05-26 | 1984-07-03 | Westinghouse Electric Corp. | Elevator system |
| CN2584579Y (en) * | 2002-08-26 | 2003-11-05 | 周沛凝 | Microcomputer control board for construction lift equipment |
| KR20050004395A (en) * | 2003-07-02 | 2005-01-12 | (주)수림 | Governor |
| CN1930072A (en) * | 2004-10-27 | 2007-03-14 | 三菱电机株式会社 | Emergency stop device for elevator |
| CN201525681U (en) * | 2009-10-21 | 2010-07-14 | 允成机电科技(上海)有限公司 | Knapsack-type home elevator mechanical stopping device |
| CN103130065A (en) * | 2011-11-28 | 2013-06-05 | 株式会社日立制作所 | Elevator operation management system |
| CN202988462U (en) * | 2012-12-05 | 2013-06-12 | 江南嘉捷电梯股份有限公司 | Protective device of elevator |
| JP2014122079A (en) * | 2012-12-20 | 2014-07-03 | Hitachi Ltd | Elevator and automatic elevator-landing device |
| CN204124972U (en) * | 2014-05-27 | 2015-01-28 | 姚长云 | A kind of can not the tension wheel switching device of misoperation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110526048A (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8869945B2 (en) | Supplemental elevator safety system | |
| EP2695841B1 (en) | Elevator device | |
| US9505587B2 (en) | Elevator with acceleration detection | |
| CN1953926B (en) | Elevator device | |
| EP2627595B1 (en) | Method for managing an emergency stop situation of an elevator, and also a safety arrangement for an elevator | |
| US9637348B2 (en) | Elevator apparatus | |
| CN108946369B (en) | Method for performing manual driving in elevator after main power supply is turned off | |
| KR101664942B1 (en) | System and method for reducing speed of an elevator car | |
| JPWO2007088599A1 (en) | Elevator equipment | |
| CN107954292B (en) | Method for preventing accidental tripping of safety mechanism in elevator system and controller for executing method | |
| JP7212201B2 (en) | elevator equipment | |
| US9604819B2 (en) | Elevator monitoring arrangement configured to monitor operation of a safety device of an elevator, a controller and method for performing same | |
| CN110526048B (en) | Control method and system for forced drive elevator | |
| CN211769591U (en) | Emergency automatic rescue elevator | |
| EP1086921B1 (en) | Safety device of elevator | |
| CN219259261U (en) | Emergency automatic rescue elevator | |
| JP4397720B2 (en) | Elevator equipment | |
| CN102177082A (en) | Elevator safety circuit device | |
| CN112811277A (en) | 125% times rated load brake test protection device and method for traction elevator | |
| CN102378731A (en) | Elevator device | |
| EP4008666A1 (en) | An elevator | |
| CN113307118A (en) | Elevator emergency stop test method and power supply for elevator emergency stop test | |
| CN115285819A (en) | Protection system of elevator safety device and elevator | |
| JPH0867446A (en) | Safety device of motor-driven dumbwaiter | |
| JPS598624B2 (en) | Elevator re-floor alignment control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |