CN107434194A - A kind of lift car prevents accidental movement system and method - Google Patents
A kind of lift car prevents accidental movement system and method Download PDFInfo
- Publication number
- CN107434194A CN107434194A CN201610786556.7A CN201610786556A CN107434194A CN 107434194 A CN107434194 A CN 107434194A CN 201610786556 A CN201610786556 A CN 201610786556A CN 107434194 A CN107434194 A CN 107434194A
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- Prior art keywords
- lift car
- accidental movement
- car
- elevator
- information
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- 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.)
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Classifications
-
- 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
-
- 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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/26—Positively-acting devices, e.g. latches, knives
Abstract
A kind of lift car prevents accidental movement system and method, is related to elevator safety protection equipment technical field, including controller, the arrestment mechanism being connected with controller, the information acquisition device on lift car;Controller includes central processing unit, communication module, power module, drive module, communication module communicates with the elevator control panel and information acquisition device installed in lift car connect respectively, central processing unit respectively with communication module, power module, drive module is connected, and judge whether elevator is in accidental movement state according to lift car running state information, so as to send control signal to the drive module, drive module is connected with hoist ropes clamper, for sending drive signal to hoist ropes clamper after receiving control signal, hoist ropes clamper is used to clamp hoist ropes stop elevator car after drive signal is received, it is accurate that the application provides a kind of design, the lift car of elevator safety can be improved prevents accidental movement system and method.
Description
Technical field
The present invention relates to elevator safety protection equipment technical field, and in particular to a kind of lift car prevents accidental movement
System and method.
Background technology
Elevator is equipped with the overspeed descending protection device such as limiter of speed, safety tongs at present, up hypervelocity ensuring equipment, refers to more
The brake of traction machine, the band-type brake power deficiency caused by traction machine brake brakes pad wear and other mechanical breakdowns, or
Person's traction sheave of tractor and hoist ropes usage time are long, and mutually abrasion, hoist ropes wick oil ooze out, and cause traction insufficient,
Accidental movement of elevator cage event will be triggered, common accidental movement of elevator cage phenomenon includes lift car in layer non-locking door
Tight and car door leaves the accidental movement of stop in the case of being not turned off, car is rushed to summit or crouching bottom;The passenger or upper and lower above and below elevator
During carrying, accidental movement, which occurs, for lift car can cause serious personnel casualty accidentses, for example, passenger is produced miserable shearing,
Extruding, in recent years as the such accident of the popularization of elevator sharply increases.
The content of the invention
The application provide it is a kind of design lift car accurate, that elevator safety can be improved prevent accidental movement system,
Additionally provide simultaneously it is a kind of realize the method for preventing accidental movement system based on above-mentioned lift car, its technical scheme is as follows:
A kind of lift car prevents accidental movement system, including controller, be connected with the controller arrestment mechanism, be located at
Information acquisition device on lift car;The controller includes central processing unit, communication module, power module, drive module, institute
State communication module and communicate connection with the elevator control panel and described information collector installed in lift car respectively, and transmit by institute
Lift car running state information to central processing unit, the central processing unit for stating information acquisition device collection leads to described respectively
Whether news module, power module, drive module are connected, and judge elevator in unexpected shifting according to lift car running state information
Dynamic state, is connected with the hoist ropes clamper, is used for the drive module, the drive module so as to send control signal
Drive signal is sent to the hoist ropes clamper after receiving the control signal, and the hoist ropes clamper is used to receive
Stop elevator car after to drive signal.
Preferably, the lift car running state information of described information collector collection includes elevator car speed information
And lift car acceleration information, the elevator car speed information are gathered by the velocity sensor on lift car,
The lift car acceleration information is gathered by the accelerometer on lift car.
Preferably, the accelerometer includes shell, sensitive-mass, potentiometer, damper, spring and signal input
End, output end, the input is connected with the elevator control panel, output end is connected with the communication module.
Preferably, the hoist ropes clamper includes trigger mechanism, traction twine holder plate, the trigger mechanism is electromagnet
Or hydraulic test, trigger mechanism acts after the hoist ropes clamper receives drive signal, drives the hoist ropes
Clamping plate clamps hoist ropes stop elevator car.
Preferably, the arrestment mechanism also includes safety switch, the safety switch is with being arranged in lift car
Safety return circuit connects, and when the hoist ropes clamper acts, triggering the safety switch disconnection safety return circuit makes lift car
It can not run.
Preferably, the arrestment mechanism also includes feedback switch, the feedback switch is connected with the central processing unit,
For detecting whether the hoist ropes clamper has acted.
Preferably, also including rescue switch, the rescue switch is normally closed switch, when the rescue switches off,
Trigger drive module and drive hoist ropes clamper release hoist ropes, and no longer detect lift car running state information.
Preferably, the power module is also associated with battery, when extraneous dead electricity, described in the power module use
The electric power of battery is powered.
A kind of lift car prevents accidental movement method, comprises the following steps:
(a)Information acquisition device gathers lift car running state information, and it includes elevator car speed information, lift car accelerates
Spend information;
(b)Controller obtains lift car running state information to judge that lift car is that have in off-position or lift car
Electricity but lift car normal mobile state or elevator have electricity but lift car answers halted state;
(c)Whether controller judges lift car in meaning according to elevator car speed information and lift car acceleration information
Outer mobile status;
(d)When judging that lift car is in accidental movement state, the drive signal that the controller passes through drive module
Hoist ropes clamper does corresponding action and carrys out stop elevator car.
Preferably, the step(c)Specifically include:When lift car, which is in lift car, answers halted state, control
Device receives elevator car speed and is not equal to zero, if elevator car speed is forward direction speed and lift car acceleration is more than or equal to zero
When, then judge that lift car is in accidental movement state;If elevator car speed is forward direction speed but lift car acceleration is small
In zero, and when lift car acceleration exceedes setting value, then judge that lift car is in accidental movement state;If lift car is fast
Spend when being less than or equal to zero for inverted speed and lift car acceleration, then judge that lift car is in accidental movement state;It is if electric
Terraced car speed is that inverted speed and lift car acceleration are more than zero, and when lift car acceleration exceedes setting value, is then sentenced
Determine lift car and be in accidental movement state.
According to above-mentioned technical proposal, accidental movement system and method is prevented by the present invention, it is possible to achieve accurate to judge
Whether lift car is in accidental movement state, reach lift car be in brake action failure or it is dynamic do when, traction
Rope clamp holder accurately and timely stop elevator car, prevents from damaging passenger, can significantly improve the security of existing elevator.
Brief description of the drawings
The present invention is described in further detail below by embodiment combination accompanying drawing.
Fig. 1 is the frame diagram of the present invention;
Fig. 2 is a kind of schematic diagram of accelerometer in Fig. 1;
Fig. 3 is a kind of structural representation of hoist ropes clamper in Fig. 1;
Fig. 4 is a kind of schematic flow sheet for preventing accidental movement method of lift car of the present invention.
Wherein, 1, controller;11st, central processing unit;12nd, communication module;13rd, power module;14th, drive module;2nd, make
Motivation structure;21st, hoist ropes clamper;22nd, safety switch;23rd, feedback switch;211st, trigger mechanism;212nd, logger clamping plate;3、
Lift car;31st, information acquisition device;32nd, elevator control panel;33rd, safety return circuit;311st, velocity sensor;312nd, accelerometer;
3121st, shell;3122nd, sensitive-mass;3123rd, potentiometer;3124th, damper;3125th, spring;4th, rescue switch;5th, electric power storage
Pond;6th, hoist ropes.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.
As shown in figure 1, a kind of lift car prevents accidental movement system, including controller 1, connect with the controller 1
The arrestment mechanism 2 connect, the information acquisition device 31 on lift car 3;The controller 1 includes central processing unit 11, communication
Module 12, power module 13, drive module 14, the communication module 12 respectively with lift car 3 in installation elevator control panel
32 and the communication connection of described information collector 31, and transmit the lift car running status gathered by described information collector 31 and believe
Breath to central processing unit 11, the central processing unit 11 respectively with the communication module 12, power module 13, the phase of drive module 14
Even, and judge whether lift car 3 is in accidental movement state according to lift car running state information, so as to send control letter
Number the drive module 14 is given, the drive module 14 is connected with the hoist ropes clamper 21, for receiving the control
Drive signal is sent after signal to the hoist ropes clamper 21, the hoist ropes clamper 21 is used to receive drive signal
Stop elevator car 3 afterwards.The drive module 14 is the power electronics drive module being made up of power component and driving chip,
To drive the hoist ropes clamper 21 in arrestment mechanism 2, when the central processing unit 11 confirms that needs are clamped action,
The drive module 14 can export a drive signal, so that hoist ropes clamper 21 obtains drive signal, so as to traction rope clamp
Holder 21 clamps stop elevator car 3.
As shown in figure 1, preferably, the lift car running state information that described information collector 31 gathers includes elevator
Car speed information and lift car acceleration information, the elevator car speed information pass through the speed on lift car 3
Degree sensor 311 is gathered, and the lift car acceleration information is gathered by the accelerometer 312 on lift car 3.Institute
Stating lift car running status also includes:Lift car 3 is in off-position, lift car 3 has electricity but lift car 3 normally moves
Dynamic state, lift car 3 have electricity but lift car 3 answers halted state, and wherein lift car 3, which is in off-position, includes elevator car
Railway carriage or compartment 3 be in power failure save oneself running status, have a power failure and do not save oneself state;Lift car 3 has electricity but the normal mobile state of lift car 3 is
Lift car 3 is in normal operation, including up-high speed, it is up accelerate, it is up at the uniform velocity, down high speed, it is descending accelerate, it is descending
The normal operation information such as at the uniform velocity;Lift car 3 has electricity but lift car 3 answers halted state mechanical, electrical in treating including lift car 3
State of the terraced car 3 outside door area and the normal operations such as operation stops, failure forbids operation, safety return circuit disconnects, according to elevator
Car speed information and lift car acceleration information can determine whether out whether lift car running status is that lift car surprisingly moves
It is dynamic.
As shown in Fig. 2 preferably, the accelerometer 312 includes shell 3121, sensitive-mass 3122, potentiometer
3123rd, damper 3124, spring 3125 and signal input part, output end, the input is connected with the elevator control panel 32,
Output end is connected with the communication module 12.Accelerometer 312 is the instrument for measuring acceleration, when object has very big acceleration
When spending, object and its contained instrument and equipment and other objects without relative acceleration are by producing equally big acceleration
Power, i.e., by dynamic loading;According to Newton's law, there is the motion that the sensitive-mass 3122 of certain inertia tries hard to keep its original
State is constant, and relative motion will be produced between housing 3121, deforms spring 3125, and then sensitive-mass 3122 is in spring force
In the presence of accelerate therewith, it is quick when inertia force caused by spring force and sensitive-mass 3122 accelerate balances each other
Feel just there is no relative motion between quality 3122 and housing 3121, at this moment the deformation reflection of spring 3125 is by the big of measuring acceleration
Small, acceleration signal is converted to electric signal by potentiometer 3123 as displacement sensor, for output, accelerometer 312
It is the oscillatory system of one degree of freedom in matter, improves the dynamic quality of system using damper 3124.
As shown in figure 3, preferably, the hoist ropes clamper 21 includes trigger mechanism 211, traction twine holder plate 212, institute
It is electromagnet or hydraulic test to state trigger mechanism 211, the trigger mechanism after hoist ropes clamper 21 receives drive signal
211 act, and drive the traction twine holder plate 212 to clamp the stop elevator car 3 of hoist ropes 6.The hoist ropes clamper 21
Trigger mechanism 211, between traction twine holder plate 212 by rocking arm passing power, traction twine holder plate 212 includes quiet clamping plate, dynamic folder
Plate, the one end connection trigger mechanism 211, the dynamic clamping plate of other end connection, hoist ropes clamper 21 are receiving driving letter
Trigger mechanism 211 acts after number, drives dynamic clamping plate to be moved to quiet clamping plate by rocking arm, finally clamps the stop of hoist ropes 6 electricity
Terraced car 3, when up and descending accidental movement occurs in lift car, the system can be carried out detecting, and make effectively
Judgement timely and reliably stop elevator car 3.
As shown in figure 1, preferably, the arrestment mechanism 2 also includes safety switch 22, the safety switch 22 is with setting
Safety return circuit 33 in lift car 3 connects, and when the hoist ropes clamper 21 acts, it is disconnected to trigger the safety switch 22
Opening safety return circuit 33 makes lift car 3 not run.The safety switch 22 is serially connected in the safety return circuit 33 of lift car 3,
When lift car 3, which is in hoist ropes clamper 21, just to be acted(Situation including not clamping hoist ropes 6 completely), the safety open
Closing 22 can disconnect to cut off the safety return circuit 33 of lift car 3, so as to avoid lift car 3 from being in clamped condition in hoist ropes 6
Under be again started up, and can prevent because false touch is dynamic make lift car 3 run and caused by emergency risk.
Preferably, the arrestment mechanism 2 also includes feedback switch 23, the feedback switch 23 and the central processing unit
11 are connected, for detecting whether the hoist ropes clamper 21 has acted.The feedback switch 23 is detecting the traction
Whether rope clamp holder 21 has acted, if the hoist ropes clamper 21 has acted, the feedback switch 23 sends a feedback
Signal is to the central processing unit 11, that is to say, that when hoist ropes clamper 21 clamps hoist ropes 6 or hoist ropes clamper 21 is firm
Just during action, the feedback switch 23 detects that the hoist ropes clamper 21 has acted, and then the feedback switch 23 is led
It is logical, and a feedback signal is returned to the central processing unit 11, it is described anti-if the hoist ropes clamper 21 does not act
Feedback switch 23 does not send feedback signal, and then the central processing unit 11 may determine that now hoist ropes clamper 21 is not done
Cross action.
Preferably, also including rescue switch 4, the rescue switch 4 is normally closed switch, when the rescue switch 4 disconnects
When, triggering drive module 14 drives hoist ropes clamper 21 to discharge hoist ropes 6, and no longer detects lift car running status letter
Breath.During 3 normal operation of lift car, the voltage for obtaining the central processing unit 11 by the rescue switch 4 of closure is believed
Number it is high level, and when needing to carry out manual rescue, the rescue switch 4 is disconnected, then the central processing unit 11 obtains
Voltage signal is changed into low level, so that the central processing unit 11 determines that lift car 3 now is in rescue state, and
And hoist ropes clamper 21 is driven to perform release movement by drive module 14, and no longer detect lift car running status
Situation, that is, stop triggering the function of the stop elevator car 3 of hoist ropes clamper 21 according to accidental movement of elevator cage state.
Preferably, the power module 13 is also associated with battery 5, when extraneous dead electricity, the power module 13 makes
Powered with the electric power of the battery 5.When extraneous dead electricity, the power module 13 carries out outage detection, and uses institute
The electric power of battery 5 is stated to power, the battery 5 after the power-off of lift car 3 when manual rescue to use, also simultaneously
It can realize that battery 5 also can be that the central processing unit 11 is powered when accidental movement occurs after the power failure of lift car 3,
And then judge whether lift car 3 is in accidental movement state, and can stop elevator car 3 in time, additionally, due to provided with electric power storage
Pond 5, therefore when needing to rescue passenger after the exception of lift car 3, rescue switch 4 can be operated.
As shown in figure 4, a kind of lift car prevents accidental movement method, comprise the following steps:
(a)Information acquisition device 31 gathers lift car running state information, and it includes elevator car speed information, lift car adds
Velocity information;
(b)Controller 1 obtains lift car running state information to judge that lift car 3 is to be in off-position or lift car
3 have electric but the normal mobile state of lift car 3 or lift car 3 to have electric but lift car 3 to answer halted state;
(c)Controller 1 judges whether lift car 3 is according to elevator car speed information and lift car acceleration information
Accidental movement state;
(d)When judging that lift car 3 is in accidental movement state, the drive signal that the controller 1 passes through drive module 14
So that hoist ropes clamper 21 does corresponding action and carrys out stop elevator car 3.
Preferably, the step(c)Specifically include:When lift car 3, which is in lift car, answers halted state, control
The elevator car speed that device 1 receives is not equal to zero, is more than etc. if elevator car speed is forward direction speed and lift car acceleration
When zero, then judge that lift car 3 is in accidental movement state;If elevator car speed is forward direction speed but lift car accelerates
Degree is less than zero, and when lift car acceleration exceedes setting value, then judgement lift car 3 is in accidental movement state;If elevator
When car speed is that inverted speed and lift car acceleration are less than or equal to zero, then judge that lift car 3 is in accidental movement shape
State;If elevator car speed is inverted speed and lift car acceleration is more than zero, and lift car acceleration exceedes setting value
When, then judge that lift car 3 is in accidental movement state.
A kind of embodiment of the present invention is as follows:
It is unified herein to represent moving up and moving down for lift car 3 with moving backward come corresponding with forward direction is mobile
(That is the traffic direction of lift car 3);The lift car running state information that described information collector 31 gathers includes elevator car
Railway carriage or compartment velocity information and lift car acceleration information, the elevator car speed information pass through the speed on lift car 3
Sensor 311 is gathered, and the lift car acceleration information is gathered by the accelerometer 312 on lift car 3, described
Controller 1 obtains the elevator car speed information gathered from information acquisition device 31, acceleration information by central processing unit 11,
Lift car off-position also includes whether not save oneself state in save oneself running status or have a power failure of power failure, and this is applied to possess to stop
The lift car 3 that electricity is saved oneself;It is that lift car 3 is in normal operation that lift car 3, which has electricity but the normal mobile state of lift car 3,
In, including up-high speed, it is up accelerate, it is up at the uniform velocity, down high speed, it is descending accelerate, the descending normal operation information such as at the uniform velocity;Electricity
Terraced car 3 have electricity but lift car 3 answer halted state include lift car 3 be in standby, lift car 3 door area and run stop
Only, failure forbids the state outside the normal operations such as operation, safety return circuit disconnection, and now any movement of lift car 3 is required for
Accidental movement judgement is carried out, when lift car 3, which is in lift car, answers halted state, the elevator car of the reception of central processing unit 11
Railway carriage or compartment speed is not equal to zero, if now elevator car speed is forward direction speed and acceleration is more than or equal to zero, judges lift car 3
In accidental movement state;If elevator car speed is forward direction speed but acceleration is less than zero, now lift car 3 is in elevator
Car answers run-stopping status but elevator main brake is acting on, then continues to calculate whether lift car acceleration is less than one
Setting value, the setting value are determined according to the parameter of elevator main brake, when the lift car acceleration is being set
When determining in scope, then judge that lift car 3 slips ladder, non-accidental movement to be controllable, if the lift car acceleration exceedes setting
During value, then it is determined as that lift car 3 is in accidental movement state;If elevator car speed is inverted speed and lift car accelerates
Degree be less than or equal to zero, then determine lift car 3 reversely accelerate or at the uniform velocity in, i.e., lift car 3 is in accidental movement state;If
Elevator car speed is inverted speed and acceleration is more than zero, and now lift car 3 is in lift car and answers run-stopping status
But elevator main brake is acting on, then continue to calculate whether lift car acceleration is more than a setting value, the setting value
It is to be determined according to the parameter of elevator main brake, when the lift car acceleration is in setting range, then judges
Lift car 3 slips ladder to be controllable, non-accidental movement, if the lift car acceleration exceedes setting value, judges elevator car
Railway carriage or compartment 3 is in accidental movement state;When judging that lift car 3 is in accidental movement state, the controller 1 passes through drive module
14 drive signal causes hoist ropes clamper 21 to make holding action, clamps hoist ropes 6 and carrys out stop elevator car 3.
Use above specific case is illustrated to the present invention, is only intended to help and is understood the present invention, not limiting
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make some simple
Deduce, deform or replace.
Claims (10)
1. a kind of lift car prevents accidental movement system, it is characterised in that is connected including controller, with the controller
Arrestment mechanism, the information acquisition device on lift car;The controller includes central processing unit, communication module, power supply mould
Block, drive module, the communication module communicate with the elevator control panel and described information collector installed in lift car respectively
Connection, and transmit by the lift car running state information that described information collector gathers to central processing unit, the centre
Reason device is connected with the communication module, power module, drive module respectively, and judges electricity according to lift car running state information
Whether ladder is in accidental movement state, so as to send control signal to the drive module, the drive module and the traction
Rope clamp holder connects, for sending drive signal to the hoist ropes clamper, the traction after receiving the control signal
Rope clamp holder is used for the stop elevator car after drive signal is received.
2. a kind of lift car as claimed in claim 1 prevents accidental movement system, it is characterised in that described information gathers
The lift car running state information of device collection includes elevator car speed information and lift car acceleration information, the elevator
Car speed information is gathered by velocity sensor on lift car, the lift car acceleration information by located at
Accelerometer collection on lift car.
3. a kind of lift car as claimed in claim 2 prevents accidental movement system, it is characterised in that the accelerometer
Including shell, sensitive-mass, potentiometer, damper, spring and signal input part, output end, the input and the elevator
Control panel connection, output end are connected with the communication module.
4. a kind of lift car as claimed in claim 1 prevents accidental movement system, it is characterised in that the traction rope clamp
Holder includes trigger mechanism, traction twine holder plate, and the trigger mechanism is electromagnet or hydraulic test, when the hoist ropes clamper
Trigger mechanism acts after receiving drive signal, drives the traction twine holder plate to clamp hoist ropes stop elevator car.
5. a kind of lift car as any one of Claims 1-4 prevents accidental movement system, it is characterised in that
The arrestment mechanism also includes safety switch, and the safety switch is connected with the safety return circuit being arranged in lift car, works as institute
When stating the action of hoist ropes clamper, triggering the safety switch disconnection safety return circuit makes lift car not run.
6. a kind of lift car as any one of claim 1 to 5 prevents accidental movement system, it is characterised in that
The arrestment mechanism also includes feedback switch, and the feedback switch is connected with the central processing unit, for detecting the traction
Whether rope clamp holder has acted.
7. a kind of lift car as any one of claim 1 to 6 prevents accidental movement system, it is characterised in that
Also include rescue switch, the rescue switch is normally closed switch, and when the rescue switches off, triggering drive module, which drives, drags
Messenger clamper discharges hoist ropes, and no longer detects lift car running state information.
8. a kind of lift car as any one of claim 1 to 7 prevents accidental movement system, it is characterised in that
The power module is also associated with battery, and when extraneous dead electricity, the power module is supplied using the electric power of the battery
Electricity.
9. a kind of lift car prevents accidental movement method, using a kind of elevator car as described in claim any one of 1-8
Railway carriage or compartment prevents accidental movement system, it is characterised in that comprises the following steps:
(a)Information acquisition device gathers lift car running state information, and it includes elevator car speed information, lift car accelerates
Spend information;
(b)Controller obtains lift car running state information to judge that lift car is that have in off-position or lift car
Electricity but lift car normal mobile state or elevator have electricity but lift car answers halted state;
(c)Whether controller judges lift car in meaning according to elevator car speed information and lift car acceleration information
Outer mobile status;
(d)When judging that lift car is in accidental movement state, the drive signal that the controller passes through drive module
Hoist ropes clamper does corresponding action and carrys out stop elevator car.
10. a kind of lift car as claimed in claim 9 prevents accidental movement method, it is characterised in that the step(c)
Specifically include:When lift car, which is in lift car, answers halted state, controller receives elevator car speed and is not equal to zero, if
When elevator car speed is that forward direction speed and lift car acceleration are more than or equal to zero, then judge that lift car is in accidental movement
State;If elevator car speed is forward direction speed but lift car acceleration is less than zero, and lift car acceleration exceedes setting
During value, then judge that lift car is in accidental movement state;If elevator car speed is inverted speed and lift car acceleration
During less than or equal to zero, then judge that lift car is in accidental movement state;If elevator car speed is inverted speed and elevator car
Railway carriage or compartment acceleration is more than zero, and when lift car acceleration exceedes setting value, then judgement lift car is in accidental movement state.
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CN111079307A (en) * | 2019-12-27 | 2020-04-28 | 盐城师范学院 | Method for establishing dynamic analysis model of elevator traction system |
CN112374321A (en) * | 2020-11-09 | 2021-02-19 | 山东奔速电梯股份有限公司 | Bottomless pit braking device for home elevator |
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CN107500074A (en) * | 2017-09-19 | 2017-12-22 | 商洛市虎之翼科技有限公司 | A kind of simple reliable elevator anti roll system and method |
CN107500074B (en) * | 2017-09-19 | 2019-06-18 | 商洛市虎之翼科技有限公司 | A kind of simple reliably elevator anti roll system and method |
CN109650206A (en) * | 2019-01-24 | 2019-04-19 | 大连特种设备检验检测研究院有限公司 | A kind of elevator load safety arrestment experimental rig |
CN109650210A (en) * | 2019-01-30 | 2019-04-19 | 王国荣 | A method of preventing carriage accidental movement |
CN111079307A (en) * | 2019-12-27 | 2020-04-28 | 盐城师范学院 | Method for establishing dynamic analysis model of elevator traction system |
CN112374321A (en) * | 2020-11-09 | 2021-02-19 | 山东奔速电梯股份有限公司 | Bottomless pit braking device for home elevator |
CN112499418A (en) * | 2020-12-17 | 2021-03-16 | 广东梯云科技有限公司 | Magnetic induction elevator operation data acquisition system and acquisition method thereof |
CN112499418B (en) * | 2020-12-17 | 2023-03-14 | 广东梯云科技有限公司 | Magnetic induction elevator operation data acquisition system and acquisition method thereof |
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Application publication date: 20171205 |