CN105540378A - Protection system for preventing elevator car from moving by accident - Google Patents
Protection system for preventing elevator car from moving by accident Download PDFInfo
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- CN105540378A CN105540378A CN201610107764.XA CN201610107764A CN105540378A CN 105540378 A CN105540378 A CN 105540378A CN 201610107764 A CN201610107764 A CN 201610107764A CN 105540378 A CN105540378 A CN 105540378A
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- elevator
- limit switch
- monitoring
- monitoring modular
- accidental movement
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- 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
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention provides a protection system for preventing an elevator car from moving by accident. The protection system comprises an elevator state monitoring module, an elevator car accidental movement processing module and a braking signal execution module, wherein the elevator car accidental movement processing module is connected with the elevator state monitoring module and the braking signal execution module. The protection system can protect the elevator car in accidental movement independent of an elevator control system, monitor elevator state signals comprehensively, and perform monitoring and quick protection on accidental movement, caused by abnormal elevator speed, an elevator braking fault, an elevator control system software fault, failure in running signal output by an elevator, an excessive number of passengers in the elevator car and ineffectiveness of elevator door lock monitoring, of the elevator car.
Description
Technical field
The present invention relates to elevator technology, particularly, relate to a kind of protection system preventing accidental movement of elevator cage.
Background technology
The potential safety hazard of elevator comprises many-sided, and wherein the accidental movement of lift car is in occupation of very large ratio.Accidental movement of elevator cage comprises elevator and runs hourly velocity exception and then rush to summit or squat at the end, and car moves away flat bed under door opening state.The guard method of current accidental movement of elevator cage is by apparatus for controlling elevator detector switch gate signal peace layer signal when door-opened elevator flat bed, as occurred extremely then to be braked elevator traction sheave by elevator internal contracting brake.But the designed use of band-type brake is braking when each call is arrived at a station under elevator normal operating condition, belongs to the service brake of elevator, and accident brake when being not used to elevator faults.If depend merely on the service brake of elevator device itself, when the fault of elevator device own or elevator internal contracting brake fault, just cannot brake the accidental movement of elevator, therefore the sure brake system independent of elevator device must be set.Existing individual secure brake system adopts pure machinery monitoring, pure mechanical braking structure, and only monitor elevator speed, and monitor signal source is single.The accidental movement of elevator cage situation that elevator internal contracting brake et out of order, apparatus for controlling elevator software fault, elevator do not export passenger's overrate in run signal, lift car or door lock of elevator monitors failure and cause is left in the basket, and therefore needs state of elevator monitoring more comprehensively sure brake system.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of protection system preventing accidental movement of elevator cage.
According to the protection system preventing accidental movement of elevator cage provided by the invention, comprise state of elevator monitoring modular, accidental movement of elevator cage processing module and speed-slackening signal execution module;
Wherein, described accidental movement of elevator cage processing module connects described state of elevator monitoring modular on the one hand, connects described speed-slackening signal execution module on the other hand;
Described state of elevator monitoring modular is for monitor in car speed, door lock of elevator, car position, elevator displacement, velocity limiter action, elevator loading, operation contactless switch state and elevator internal contracting brake state any one or appoint multiple and generate detection signal;
Described accidental movement of elevator cage processing module, for being contrasted by the setting signal of described detection signal and elevator, when described detection signal is different from the setting signal of elevator, sends speed-slackening signal;
Described speed-slackening signal execution module, closes for the wire holder controlling elevator according to described speed-slackening signal, with elevator brake.
Preferably, described state of elevator monitoring modular comprises car speed monitoring modular, door lock of elevator monitoring modular, car position monitoring modular, elevator displacement monitoring module, elevator governor action monitoring modular, elevator loading monitoring modular, elevator operation contactless switch monitoring modular and elevator internal contracting brake state monitoring module;
Wherein, described car speed monitoring modular, door lock of elevator monitoring modular, car position monitoring modular, elevator displacement monitoring module, elevator governor action monitoring modular, elevator loading monitoring modular, elevator operation contactless switch monitoring modular and elevator internal contracting brake state monitoring module all connect described accidental movement of elevator cage processing module;
Described car speed monitoring modular, for monitoring the actual motion speed of car, be specially, under opening the two states of closing with elevator door at elevator door, be set with the First Speed threshold value corresponding to two states and second speed threshold value respectively, when elevator door is opened, when car speed monitoring module monitors exceedes First Speed threshold value to the first real-time speed of car, described accidental movement of elevator cage processing module sends speed-slackening signal; When the elevator door is closed, when car speed monitoring module monitors exceedes second speed threshold value to the second real-time speed of car, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described door lock of elevator monitoring modular, for monitoring door lock of elevator state, described car position monitoring modular, for monitoring the position of car, be specially, during car Bu Men district, the setting signal of door lock of elevator is closed, when car position monitoring modular detects car Bu Men district, and door lock of elevator monitoring modular is when detecting that door lock of elevator is closed, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator displacement monitoring module, for monitoring the displacement state of elevator, described elevator runs contactless switch monitoring modular runs contactless switch actuating signal for detecting elevator, be specially, the displacement of elevator displacement monitoring module Real-Time Monitoring elevator traction sheave and velocity limiter, when elevator traction sheave or velocity limiter are subjected to displacement, but described elevator operation contactless switch monitoring module monitors does not send to the actuating signal running contactless switch, and described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator governor action monitoring modular, for monitoring the trigger action state of elevator governor, be specially, when elevator governor action monitoring module monitors has trigger action signal to elevator governor, then judge elevator overspeed, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator loading monitoring modular, for monitoring the number of passenger in elevator, to calculate the current loading condition of elevator, is specially, and when loading condition is greater than load-carrying threshold value in setting signal, then described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator internal contracting brake state monitoring module, for monitoring the band-type brake actual act of elevator, be specially, when the band-type brake actual act that elevator internal contracting brake state monitoring module detects and the band-type brake instruction that apparatus for controlling elevator sends inconsistent time, then be judged as band-type brake fault, described accidental movement of elevator cage processing module sends speed-slackening signal.
Preferably, described car speed monitoring modular adopts the Gravity accelerometer be arranged on car;
Described door lock of elevator monitoring modular adopts radar detector and door switch entrance point;
Described car position monitoring modular adopts flat bed inductor;
Described elevator displacement monitoring module adopts traction sheave displacement pickup and velocity limiter displacement pickup;
Described elevator governor action monitoring modular adopts velocity limiter action sensor;
Described elevator loading monitoring modular adopts the crowd density sensor based on image processing techniques;
Described elevator runs contactless switch monitoring modular and adopts the feedback output point run on contactless switch;
Described elevator internal contracting brake state monitoring module adopts the limit switch be arranged on band brake apparatus.
Preferably, described speed-slackening signal execution module comprises the wire holder drived control mechanism and wire holder execution unit that are electrically connected to each other;
Described wire holder drived control mechanism is electrically connected described accidental movement of elevator cage processing module, for controlling the closed of described wire holder execution unit according to described speed-slackening signal.
Preferably, described accidental movement of elevator cage processing module adopts accidental movement of elevator cage monitoring panel.
Preferably, described wire holder execution unit comprises driving gear component, fan-shaped pressing plate, slide block, roller bearing, energy-storaging spring, transmission arm, dynamic clamping plate, clamp plate, guided bearing axle;
Wherein, described wire holder drived control mechanism is connected with described driving gear component, main gear shaft in described driving gear component engages with described fan-shaped pressing plate, described fan-shaped pressing plate can along described skid, described fan-shaped pressing plate and described roller bearing hinged, described energy-storaging spring is connected with described roller bearing, one end of described roller bearing and described transmission arm is hinged, the other end and the described dynamic clamping plate of described transmission arm are hinged, described clamp plate is fixed on an end of described guided bearing axle, described dynamic clamping plate under the drive of described transmission arm can along described guide support axle slide so that away from or near clamp plate.
Preferably, described driving gear component comprises main gear, dual gear, secondary gear and main gear shaft;
Wherein, described time gear engages with the lower gear in described dual gear, and cogging in described dual gear is engaged with main gear, and described main gear is connected with main gear shaft; Described main gear shaft is provided with driving gear, and driving gear engages with described fan-shaped pressing plate;
Also comprise reseting gear handle and handle supporting axle;
Wherein, described reseting gear handle is provided with reseting gear, when reseting gear handle is arranged on handle supporting axle, reseting gear can engage with the lower gear of described dual gear, thus can realize driven by shaking driving gear component;
Described handle supporting axle is unilateral bearing, and when described reseting gear handle rotates, fan-shaped pressing plate is along slide block slide downward, and energy-storaging spring is compressed, and transmission arm drives dynamic clamping plate away from clamp plate, resets to the wire holder of locking.
Preferably, described main gear shaft is provided with the first limit switch triggering device and the second limit switch triggering device, the below of described main gear shaft is provided with the first limit switch and the second limit switch, for the position limitation protection in wire holder reseting procedure;
In wire holder reseting procedure, described wire holder drived control mechanism drives described driving gear component to carry out rotation reset, and then described main gear shaft drives described fan-shaped pressing plate along described slide block slide downward, when main gear shaft turn to make the first limit switch triggering device on main gear shaft touch the first limit switch time, first limit switch is triggered, and main gear shaft stops operating; When the first limit switch lost efficacy, main gear shaft cannot be braked and continue to turn to along former direction when making the second limit switch triggering device on main gear shaft touch the second limit switch, and the second limit switch is triggered.
Preferably, described wire holder drived control mechanism comprises drive motor, worm gear device, magnetic clutch, the first limit switch, the second limit switch and drived control plate;
Wherein, described drive motor, magnetic clutch, the first limit switch and the second limit switch are all electrically connected described drived control plate, described drived control plate is used for out-put supply to described drive motor and described magnetic clutch, and described first limit switch, the second limit switch are used for sending action signal to described drived control plate; Described drive motor is connected with worm gear device, and described worm gear device is connected with magnetic clutch, and described magnetic clutch is connected with the secondary gear in described driving gear component; Described drived control plate is electrically connected described accidental movement of elevator cage processing module;
After wire holder powers on, the process of automatically reseting can be started, described drived control plate is powered to described drive motor and described magnetic clutch, described drive motor is started working, drive worm gear device, through the transmission of described driving gear component, described fan-shaped pressing plate starts along slide block slide downward, the roller bearing hinged with fan-shaped pressing plate compresses described energy-storaging spring downwards, make energy-storaging spring accumulation of energy, described roller bearing drives dynamic clamping plate away from clamp plate through transmission arm, when the main gear shaft in described driving gear component turn to make the first limit switch triggering device on main gear shaft touch the first limit switch time, first limit switch is triggered, the power supply to drive motor is stopped immediately after described drived control plate receives the actuating signal of the first limit switch, drive motor quits work, thus driving gear component stops operating, and now described drived control plate still keeps the power supply to described magnetic clutch, thus driving gear component can not reverse due to the elastic potential energy of energy-storaging spring, driving gear component remains on existing position fixing, reseting procedure terminates, wire holder enters static standby state,
When after wire holder power-off, described drived control plate stops powering to described drive motor and described magnetic clutch, magnetic clutch quits work, driving gear component loses fixed position confining force, described roller bearing upwards pushes away by described energy-storaging spring release elastic potential energy, described roller bearing drives fan-shaped pressing plate along slide block upward sliding, and described roller bearing drives dynamic clamping plate near clamp plate through transmission arm, realizes Quick-clamped action.
Preferably, in reseting procedure, end when the normal rotation scope of main gear shaft is and is triggered to the first limit switch, making main gear shaft surmount normal rotation scope when losing efficacy due to the first limit switch continues to turn to along former direction when making the second limit switch triggering device on main gear shaft touch the second limit switch, second limit switch is triggered, start clamping mechanism, described drived control plate stops powering to described drive motor and described magnetic clutch, magnetic clutch quits work, driving gear component loses fixed position confining force, described roller bearing upwards pushes away by described energy-storaging spring release elastic potential energy, described roller bearing drives fan-shaped pressing plate along slide block upward sliding, described roller bearing drives dynamic clamping plate near clamp plate through transmission arm, realize Quick-clamped action.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention can protect accidental movement of elevator cage independent of the control system of elevator, and comprehensive monitoring comprises elevator speed exception, elevator internal contracting brake et out of order, apparatus for controlling elevator software fault, elevator not to export in run signal, lift car passenger's overrate and door lock of elevator monitors failure and the accidental movement of elevator cage situation caused;
2, speed-slackening signal execution module trigger mechanism of the present invention is simple, and peripheral driving design is also relatively simple, and adopt energy-storaging spring release elastic potential energy to drive clamping plate clamping via transmission component, trigger rapidly and good stability, device takes up room little;
3, speed-slackening signal execution module of the present invention does not need hand reset after triggering, as long as device re-powers, CD-ROM drive motor is work strip nutating gear assembly immediately, and then drives fan-shaped pressing plate compress energy storage spring, transmission arm drives dynamic clamping plate away from clamp plate, realizes automatically accurately resetting.Under cannot re-powering and carrying out automatically reset situation, also reseting gear handle can be used to carry out hand reset, be arranged on handle supporting axle by reseting gear handle and carry out rotating, simple to operate, do not need to carry out complicated hand reset as current other wire holders and to lock action;
4, speed-slackening signal execution module structure of the present invention is ingenious, and clamping reliability is strong.Described roller bearing is articulated with the position on the lower side, center of fan-shaped pressing plate, after triggering pinching action, fan-shaped pressing plate upwards rotates, when final clamping, transmission arm almost overlaps with horizontal direction, approximate formation dead center position, the power that spring is supplied to dynamic clamping plate obtains maximum amplification, and clamping reliability is strong.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of speed-slackening signal execution module in the present invention;
Fig. 3, Fig. 4, Fig. 5, Fig. 6 show the inside structure schematic diagram of speed-slackening signal execution module in the present invention.
In figure:
1 is wire rope grip body, 2 is main gear shaft, 3 is fan-shaped pressing plate, 4 is the axis of rolling, 5 is slide block, 6 is adjustment bent plate, 7 is clamp plate, 8 is guided bearing axle, 9 is steel rope pressing plate, 10 is dynamic clamping plate, 11 is supporting square, 12 is fan-shaped pressing plate shaft, 13 is main gear, 14 is cap head key, 15 is reseting gear handle, 16 is handle supporting axle, 17 is gear cap, 18 is bolt, 19 is drive motor, 20 is spring pedestal, 21 is spring guide, 22 is energy-storaging spring, 23 is back-up block on spring, 24 is roller bearing, 25 is transmission arm, 26 is needle bearing, 27 is pedestal angle steel, 28 is cross-recessed screw, 29 is eccentric wheel structure, 30 is bearing, 31 is time gear, 32 bidentate bolsters, 33 is dual gear, 34 is hubcap, 35 is upper cover plate, 36 is switch fixing casing, 37 is the first limit switch, 38 is the second limit switch, 39 is drived control plate mounting box, 40 is magnetic clutch, 41 is worm gear device.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
In the present embodiment, the protection system preventing accidental movement of elevator cage provided by the invention, comprises state of elevator monitoring modular, accidental movement of elevator cage processing module and speed-slackening signal execution module;
Wherein, described accidental movement of elevator cage processing module connects described state of elevator monitoring modular on the one hand, connects described speed-slackening signal execution module on the other hand;
Described state of elevator monitoring modular is for monitor in car speed, door lock of elevator, car position, elevator displacement, velocity limiter action, elevator loading, operation contactless switch state and elevator internal contracting brake state any one or appoint multiple and generate detection signal;
Described accidental movement of elevator cage processing module, for being contrasted by the setting signal of described detection signal and elevator, when described detection signal is different from the setting signal of elevator, sends speed-slackening signal;
Described speed-slackening signal execution module, closes for the wire holder controlling elevator according to described speed-slackening signal, with elevator brake.
Described state of elevator monitoring modular comprises car speed monitoring modular, door lock of elevator monitoring modular, car position monitoring modular, elevator displacement monitoring module, elevator governor action monitoring modular, elevator loading monitoring modular, elevator operation contactless switch monitoring modular and elevator internal contracting brake state monitoring module;
Wherein, described car speed monitoring modular, door lock of elevator monitoring modular, car position monitoring modular, elevator displacement monitoring module, elevator governor action monitoring modular, elevator loading monitoring modular, elevator operation contactless switch monitoring modular and elevator internal contracting brake state monitoring module all connect described accidental movement of elevator cage processing module;
Described car speed monitoring modular, for monitoring the actual motion speed of car, be specially, under opening the two states of closing with elevator door at elevator door, be set with the First Speed threshold value corresponding to two states and second speed threshold value respectively, when elevator door is opened, when car speed monitoring module monitors exceedes First Speed threshold value to the first real-time speed of car, described accidental movement of elevator cage processing module sends speed-slackening signal; When the elevator door is closed, when car speed monitoring module monitors exceedes second speed threshold value to the second real-time speed of car, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described door lock of elevator monitoring modular, for monitoring door lock of elevator state, described car position monitoring modular, for monitoring the position of car, be specially, during car Bu Men district, the setting signal of door lock of elevator is closed, when car position monitoring modular detects car Bu Men district, and door lock of elevator monitoring modular is when detecting that door lock of elevator is closed, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator displacement monitoring module, for monitoring the displacement state of elevator, described elevator runs contactless switch monitoring modular runs contactless switch actuating signal for detecting elevator, be specially, the displacement of elevator displacement monitoring module Real-Time Monitoring elevator traction sheave and velocity limiter, when elevator traction sheave or velocity limiter are subjected to displacement, but described elevator operation contactless switch monitoring module monitors does not send to the actuating signal running contactless switch, and described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator governor action monitoring modular, for monitoring the trigger action state of elevator governor, be specially, when elevator governor action monitoring module monitors has trigger action signal to elevator governor, then judge elevator overspeed, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator loading monitoring modular, for monitoring the number of passenger in elevator, to calculate the current loading condition of elevator, is specially, and when loading condition is greater than load-carrying threshold value in setting signal, then described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator internal contracting brake state monitoring module, for monitoring the band-type brake actual act of elevator, be specially, when the band-type brake actual act that elevator internal contracting brake state monitoring module detects and the band-type brake instruction that apparatus for controlling elevator sends inconsistent time, then be judged as band-type brake fault, described accidental movement of elevator cage processing module sends speed-slackening signal.
Described car speed monitoring modular adopts the Gravity accelerometer be arranged on car;
Described door lock of elevator monitoring modular adopts radar detector and door switch entrance point;
Described car position monitoring modular adopts flat bed inductor;
Described elevator displacement monitoring module adopts traction sheave displacement pickup and velocity limiter displacement pickup;
Described elevator governor action monitoring modular adopts velocity limiter action sensor;
Described elevator loading monitoring modular adopts the crowd density sensor based on image processing techniques;
Described elevator runs contactless switch monitoring modular and adopts the feedback output point run on contactless switch;
Described elevator internal contracting brake state monitoring module adopts the limit switch be arranged on band brake apparatus.
Described speed-slackening signal execution module comprises wire holder drived control mechanism and the wire holder execution unit of the electrical connection that interconnects mutually;
Described wire holder drived control mechanism is electrically connected described accidental movement of elevator cage processing module, for controlling the closed of described wire holder execution unit according to described speed-slackening signal.
Described accidental movement of elevator cage processing module adopts accidental movement of elevator cage monitoring panel.
Described wire holder execution unit comprises driving gear component, fan-shaped pressing plate 3, slide block 5, roller bearing 24, energy-storaging spring 22, transmission arm 25, dynamic clamping plate 10, clamp plate 7, guided bearing axle 8;
Wherein, described wire holder drived control mechanism is connected with described driving gear component, main gear shaft 2 in described driving gear component engages with described fan-shaped pressing plate 3, described fan-shaped pressing plate 3 can slide along described slide block 5, described fan-shaped pressing plate 3 is hinged with described roller bearing 24, described energy-storaging spring 22 is connected with described roller bearing 24, described roller bearing 24 is hinged with an end of described transmission arm 25, the other end and the described dynamic clamping plate 10 of described transmission arm 25 are hinged, described clamp plate 7 is fixed on an end of described guided bearing axle 8, described dynamic clamping plate 10 under the drive of described transmission arm 25 can along described guide support axle slide so that away from or near clamp plate 7.
Preferably, described driving gear component comprises main gear 13, dual gear 33, secondary gear 31 and main gear shaft 2;
Wherein, described time gear 31 engages with the lower gear in described dual gear 33, and cogging in described dual gear 33 is engaged with main gear 13, and described main gear 13 is connected with main gear shaft 2; Described main gear shaft 2 is provided with driving gear, and driving gear engages with described fan-shaped pressing plate 3;
Also comprise reseting gear handle 15 and handle supporting axle 16;
Wherein, described reseting gear handle 15 is provided with reseting gear, when reseting gear handle 15 is arranged on handle supporting axle 16, reseting gear can engage with the lower gear of described dual gear 33, thus can realize driven by shaking driving gear component;
Described handle supporting axle 16 is unilateral bearing, and when described reseting gear handle 15 rotates, fan-shaped pressing plate 3 is along slide block 5 slide downward, and energy-storaging spring 22 is compressed, and transmission arm 25 drives dynamic clamping plate 10 away from clamp plate 7, resets to the wire holder of locking.
Preferably, described main gear shaft 2 is provided with the first limit switch triggering device and the second limit switch triggering device, the below of described main gear shaft 2 is provided with the first limit switch and the second limit switch 38, for the position limitation protection in wire holder reseting procedure;
In wire holder reseting procedure, described wire holder drived control mechanism drives described driving gear component to carry out rotation reset, and then described main gear shaft 2 drives described fan-shaped pressing plate 3 along described slide block 5 slide downward, when main gear shaft 2 turn to make the first limit switch triggering device on main gear shaft 2 touch the first limit switch 37 time, first limit switch 37 is triggered, and main gear shaft 2 stops operating; When the first limit switch 37 lost efficacy, main gear shaft 2 cannot be braked and continue to turn to along former direction when making the second limit switch triggering device on main gear shaft touch the second limit switch 38, and the second limit switch 38 is triggered.
Preferably, described wire holder drived control mechanism comprises drive motor 19, worm gear device 41, magnetic clutch 40, first limit switch 37, second limit switch 38 and drived control plate;
Wherein, described drive motor 19, magnetic clutch 40, first limit switch 37 and the second limit switch 38 are all electrically connected described drived control plate, described drived control plate is used for out-put supply to described drive motor 19 and described magnetic clutch 40, and described first limit switch 37, second limit switch 38 gives described drived control plate for sending action signal; Described drive motor 19 is connected with worm gear device 41, and described worm gear device 41 is connected with magnetic clutch 40, and described magnetic clutch 40 is connected with the secondary gear in described driving gear component; Described drived control plate is electrically connected described accidental movement of elevator cage processing module;
After wire holder powers on, the process of automatically reseting can be started, described drived control plate is powered to described drive motor 19 and described magnetic clutch 40, described drive motor 19 is started working, drive worm gear device 41, through the transmission of described driving gear component, described fan-shaped pressing plate 3 starts along slide block 5 slide downward, the roller bearing 24 hinged with fan-shaped pressing plate 3 compresses described energy-storaging spring 22 downwards, make energy-storaging spring 22 accumulation of energy, described roller bearing 24 drives dynamic clamping plate 10 away from clamp plate 7 through transmission arm 25, when the main gear shaft 2 in described driving gear component turn to make the first limit switch triggering device on main gear shaft 2 touch the first limit switch 37 time, first limit switch 37 is triggered, described drived control plate stops the power supply to drive motor 19 immediately after receiving the actuating signal of the first limit switch 37, drive motor 19 quits work, thus driving gear component stops operating, and now described drived control plate still keeps the power supply to described magnetic clutch 40, thus driving gear component can not reverse due to the elastic potential energy of energy-storaging spring 22, driving gear component remains on existing position fixing, reseting procedure terminates, wire holder enters static standby state,
When after wire holder power-off, described drived control plate stops powering to described drive motor 19 and described magnetic clutch 40, magnetic clutch 40 quits work, driving gear component loses fixed position confining force, described energy-storaging spring 22 discharges elastic potential energy upwards to be pushed away described roller bearing 24, and described roller bearing 24 drives fan-shaped pressing plate 3 along slide block 5 upward sliding, and described roller bearing 24 drives dynamic clamping plate 10 near clamp plate 7 through transmission arm 25, realize Quick-clamped action, namely clamp traction steel-cable.
Preferably, in reseting procedure, end when the normal rotation scope of main gear shaft 2 is and is triggered to the first limit switch 37, making main gear shaft 2 surmount normal rotation scope when losing efficacy due to the first limit switch 37 continues to turn to along former direction when making the second limit switch triggering device on main gear shaft touch the second limit switch 38, second limit switch 38 is triggered, start clamping mechanism, described drived control plate stops powering to described drive motor 19 and described magnetic clutch 40, magnetic clutch 40 quits work, driving gear component loses fixed position confining force, described energy-storaging spring 22 discharges elastic potential energy upwards to be pushed away described roller bearing 24, described roller bearing 24 drives fan-shaped pressing plate 3 along slide block 5 upward sliding, described roller bearing 24 drives dynamic clamping plate 10 near clamp plate 7 through transmission arm 25, realize Quick-clamped action, namely traction steel-cable is clamped.
Preferably, described slide block 5 is curved, slide block 5 is provided with multiple axis of rolling 4 be arranged in order along the camber line of slide block 5, fit the rolling pair that the described axis of rolling 4 is formed in described fan-shaped pressing plate 3 side, described fan-shaped pressing plate 3 can be slided along the camber line rolling pair of described slide block 5 by the described axis of rolling 4.
Preferably, when described driving gear component drives described fan-shaped pressing plate 3 along described slide block 5 slide downward, the roller bearing 24 hinged with fan-shaped pressing plate 3 can drive transmission arm 25, and then transmission arm 25 drives dynamic clamping plate 10 away from clamp plate 7;
When described energy-storaging spring 22 promotes described fan-shaped pressing plate 3 along described slide block 5 upward sliding, the roller bearing 24 hinged with fan-shaped pressing plate 3 can drive transmission arm 25, and then transmission arm 25 drives dynamic clamping plate 10 close to clamp plate 7.
Preferably, described first limit switch triggering device adopts cross-recessed screw 28;
Described second limit switch triggering device adopts eccentric wheel structure 29.
Preferably, back-up block 23 on spring, spring pedestal 20, spring guide 21 is also comprised;
Back-up block 23 on each hinged spring in described roller bearing 24 two ends, on described spring, back-up block is connected with one end of described energy-storaging spring 22, and the other end of described energy-storaging spring 22 is connected with spring pedestal 20; Spring pedestal 20 is arranged on wire rope grip body 1;
The inside of described energy-storaging spring 22 is provided with described spring guide 21, and one end of described spring guide 21 connects back-up block 23 on described spring, and the other end of described spring guide connects described spring pedestal 20.
Preferably, the clamping face of described dynamic clamping plate 10 and clamp plate 7 is provided with dovetail groove, its object is to the equlvalent coefficient of friction increasing clamping, move and be connected by cross recessed countersunk head sscrew between clamping plate 10 with clamp plate 7, be connected by screw between clamp plate 7 and adjustment bent plate 6, wherein adjusting bent plate 6 is fixed on wire rope grip body 1, excessive deformation is there is at work to prevent wire rope grip body 1, dynamic clamping plate 10 are connected by socket cap screw with supporting square 11, four angles of dynamic clamping plate 10 are provided with guiding circular hole simultaneously, dynamic clamping plate 10 will be moved forward along four symmetrical guided bearing axles 8 during action, guided bearing axle 8 is vertically fixed on clamp plate 7.
The wire holder device of car accidental movement that prevents provided by the invention also comprises fan-shaped pressing plate shaft 12, supporting square 11, hinged two supporting squares 11 on fan-shaped pressing plate shaft 12, and supporting square 11 is fixed on dynamic clamping plate 10, for pinching action; The both ends of described fan-shaped pressing plate shaft 12 are hinged in two supporting squares 11 respectively; One end and the described roller bearing 24 of described transmission arm 25 are hinged, the other end and described fan-shaped pressing plate shaft 12 hinged.
The wire holder device preventing car accidental movement provided by the invention, also comprises the pedestal supporting each vital parts, and pedestal comprises wire rope grip body 1, upper cover plate 35, pedestal angle steel 27, wherein; Wire rope grip body 1 forms an oblong box body together with upper cover plate 35, this oblong box body is fixed between two the pedestal angle steel 27 in left and right by bolt 18, pedestal angle steel 27 is fixed on lift car by bolt 18, fine setting when simultaneously pedestal angle steel 27 also existing deep-slotted chip breaker for installing, makes it coordinate better.
Main gear shaft 2 is interference fitted on bearing 30, bearing 30 interference fit is on wire rope grip body 1, utilize circlip for shaft to position it, one end of main gear shaft 2 is coordinated by cap head key 14 with main gear 13, and main gear 13 is positioned at the outside of wire rope grip body 1 simultaneously.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. prevent a protection system for accidental movement of elevator cage, it is characterized in that, comprise state of elevator monitoring modular, accidental movement of elevator cage processing module and speed-slackening signal execution module;
Wherein, described accidental movement of elevator cage processing module connects described state of elevator monitoring modular on the one hand, connects described speed-slackening signal execution module on the other hand;
Described state of elevator monitoring modular is for monitor in car speed, door lock of elevator, car position, traction sheave displacement, velocity limiter state, elevator loading, operation contactless switch state and elevator internal contracting brake state any one or appoint multiple and generate detection signal;
Described accidental movement of elevator cage processing module, for being contrasted by the setting signal of described detection signal and elevator, when described detection signal is different from the setting signal of elevator, sends speed-slackening signal;
Described speed-slackening signal execution module, closes for the wire holder controlling elevator according to described speed-slackening signal, with elevator brake.
2. the protection system preventing accidental movement of elevator cage according to claim 1, it is characterized in that, described state of elevator monitoring modular comprises car speed monitoring modular, door lock of elevator monitoring modular, car position monitoring modular, elevator displacement monitoring module, elevator governor action monitoring modular, elevator loading monitoring modular, elevator operation contactless switch monitoring modular and elevator internal contracting brake state monitoring module;
Wherein, described car speed monitoring modular, door lock of elevator monitoring modular, car position monitoring modular, elevator displacement monitoring module, elevator governor action monitoring modular, elevator loading monitoring modular, elevator operation contactless switch monitoring modular and elevator internal contracting brake state monitoring module all connect described accidental movement of elevator cage processing module;
Described car speed monitoring modular, for monitoring the actual motion speed of car, be specially, under opening the two states of closing with elevator door at elevator door, be set with the First Speed threshold value corresponding to two states and second speed threshold value respectively, when elevator door is opened, when car speed monitoring module monitors exceedes First Speed threshold value to the first real-time speed of car, described accidental movement of elevator cage processing module sends speed-slackening signal; When the elevator door is closed, when car speed monitoring module monitors exceedes second speed threshold value to the second real-time speed of car, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described door lock of elevator monitoring modular, for monitoring door lock of elevator state, described car position monitoring modular, for monitoring the position of car, be specially, during car Bu Men district, the setting signal of door lock of elevator is closed, when car position monitoring modular detects car Bu Men district, and door lock of elevator monitoring modular is when detecting that door lock of elevator is closed, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator displacement monitoring module, for monitoring the displacement state of elevator, described elevator runs contactless switch monitoring modular runs contactless switch actuating signal for detecting elevator, be specially, the displacement of elevator displacement monitoring module Real-Time Monitoring elevator traction sheave and velocity limiter, when elevator traction sheave or velocity limiter are subjected to displacement, but described elevator operation contactless switch monitoring module monitors does not send to the actuating signal running contactless switch, and described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator governor action monitoring modular, for monitoring the trigger action state of elevator governor, be specially, when elevator governor action monitoring module monitors has trigger action signal to elevator governor, then judge elevator overspeed, described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator loading monitoring modular, for monitoring the number of passenger in elevator, to calculate the current loading condition of elevator, is specially, and when loading condition is greater than load-carrying threshold value in setting signal, then described accidental movement of elevator cage processing module sends speed-slackening signal;
Described elevator internal contracting brake state monitoring module, for monitoring the band-type brake actual act of elevator, be specially, when the band-type brake actual act that elevator internal contracting brake state monitoring module detects and the band-type brake instruction that apparatus for controlling elevator sends inconsistent time, then be judged as band-type brake fault, described accidental movement of elevator cage processing module sends speed-slackening signal.
3. the protection system preventing accidental movement of elevator cage according to claim 2, is characterized in that,
Described car speed monitoring modular adopts the Gravity accelerometer be arranged on car;
Described door lock of elevator monitoring modular adopts radar detector and door switch entrance point;
Described car position monitoring modular adopts flat bed inductor;
Described elevator displacement monitoring module adopts traction sheave displacement pickup and velocity limiter displacement pickup;
Described elevator governor action monitoring modular adopts velocity limiter action sensor;
Described elevator loading monitoring modular adopts the crowd density sensor based on image processing techniques;
Described elevator runs contactless switch monitoring modular and adopts the feedback output point run on contactless switch;
Described elevator internal contracting brake state monitoring module adopts the limit switch be arranged on band brake apparatus.
4. the protection system preventing accidental movement of elevator cage according to claim 1, is characterized in that, described speed-slackening signal execution module comprises the wire holder drived control mechanism and wire holder execution unit that are electrically connected to each other;
Described wire holder drived control mechanism is electrically connected described accidental movement of elevator cage processing module, for controlling the closed of described wire holder execution unit according to described speed-slackening signal.
5. the protection system preventing accidental movement of elevator cage according to claim 1, is characterized in that, described accidental movement of elevator cage processing module adopts accidental movement of elevator cage monitoring panel.
6. the protection system preventing accidental movement of elevator cage according to claim 4, it is characterized in that, described wire holder execution unit comprises driving gear component, fan-shaped pressing plate, slide block, roller bearing, energy-storaging spring, transmission arm, dynamic clamping plate, clamp plate, guided bearing axle;
Wherein, described wire holder drived control mechanism is connected with described driving gear component, main gear shaft in described driving gear component engages with described fan-shaped pressing plate, described fan-shaped pressing plate can along described skid, described fan-shaped pressing plate and described roller bearing hinged, described energy-storaging spring is connected with described roller bearing, one end of described roller bearing and described transmission arm is hinged, the other end and the described dynamic clamping plate of described transmission arm are hinged, described clamp plate is fixed on an end of described guided bearing axle, described dynamic clamping plate under the drive of described transmission arm can along described guide support axle slide so that away from or near clamp plate.
7. the protection system preventing accidental movement of elevator cage according to claim 6, is characterized in that, described driving gear component comprises main gear, dual gear, secondary gear and main gear shaft;
Wherein, described time gear engages with the lower gear in described dual gear, and cogging in described dual gear is engaged with main gear, and described main gear is connected with main gear shaft; Described main gear shaft is provided with driving gear, and driving gear engages with described fan-shaped pressing plate;
Also comprise reseting gear handle and handle supporting axle;
Wherein, described reseting gear handle is provided with reseting gear, when reseting gear handle is arranged on handle supporting axle, reseting gear can engage with the lower gear of described dual gear, thus can realize driven by shaking driving gear component;
Described handle supporting axle is unilateral bearing, and when described reseting gear handle rotates, fan-shaped pressing plate is along slide block slide downward, and energy-storaging spring is compressed, and transmission arm drives dynamic clamping plate away from clamp plate, resets to the wire holder of locking.
8. the protection system preventing accidental movement of elevator cage according to claim 7, it is characterized in that, described main gear shaft is provided with the first limit switch triggering device and the second limit switch triggering device, the below of described main gear shaft is provided with the first limit switch and the second limit switch, for the position limitation protection in wire holder reseting procedure;
In wire holder reseting procedure, described drived control mechanism drives described driving gear component to carry out rotation reset, and then described main gear shaft drives described fan-shaped pressing plate along described slide block slide downward, when main gear shaft turn to make the first limit switch triggering device on main gear shaft touch the first limit switch time, first limit switch is triggered, and main gear shaft stops operating; When the first limit switch lost efficacy, main gear shaft cannot be braked and continue to turn to along former direction when making the second limit switch triggering device on main gear shaft touch the second limit switch, and the second limit switch is triggered.
9. the protection system preventing accidental movement of elevator cage according to claim 6, it is characterized in that, described wire holder drived control mechanism comprises drive motor, worm gear device, magnetic clutch, the first limit switch, the second limit switch and drived control plate;
Wherein, described drive motor, magnetic clutch, the first limit switch and the second limit switch are all electrically connected described drived control plate, described drived control plate is used for out-put supply to described drive motor and described magnetic clutch, and described first limit switch, the second limit switch are used for sending action signal to described drived control plate; Described drive motor is connected with worm gear device, and described worm gear device is connected with magnetic clutch, and described magnetic clutch is connected with the secondary gear in described driving gear component; Described drived control plate is electrically connected described accidental movement of elevator cage processing module;
After wire holder powers on, the process of automatically reseting can be started, described drived control plate is powered to described drive motor and described magnetic clutch, described drive motor is started working, drive worm gear device, through the transmission of described driving gear component, described fan-shaped pressing plate starts along slide block slide downward, the roller bearing hinged with fan-shaped pressing plate compresses described energy-storaging spring downwards, make energy-storaging spring accumulation of energy, described roller bearing drives dynamic clamping plate away from clamp plate through transmission arm, when the main gear shaft in described driving gear component turn to make the first limit switch triggering device on main gear shaft touch the first limit switch time, first limit switch is triggered, the power supply to drive motor is stopped immediately after described drived control plate receives the actuating signal of the first limit switch, drive motor quits work, thus driving gear component stops operating, and now described drived control plate still keeps the power supply to described magnetic clutch, thus driving gear component can not reverse due to the elastic potential energy of energy-storaging spring, driving gear component remains on existing position fixing, reseting procedure terminates, wire holder enters static standby state,
When after wire holder power-off, described drived control plate stops powering to described drive motor and described magnetic clutch, magnetic clutch quits work, driving gear component loses fixed position confining force, described roller bearing upwards pushes away by described energy-storaging spring release elastic potential energy, described roller bearing drives fan-shaped pressing plate along slide block upward sliding, and described roller bearing drives dynamic clamping plate near clamp plate through transmission arm, realizes Quick-clamped action.
10. the protection system preventing accidental movement of elevator cage according to claim 9, it is characterized in that, in reseting procedure, end when the normal rotation scope of main gear shaft is and is triggered to the first limit switch, making main gear shaft surmount normal rotation scope when losing efficacy due to the first limit switch continues to turn to along former direction when making the second limit switch triggering device on main gear shaft touch the second limit switch, second limit switch is triggered, start clamping mechanism, described drived control plate stops powering to described drive motor and described magnetic clutch, magnetic clutch quits work, driving gear component loses fixed position confining force, described roller bearing upwards pushes away by described energy-storaging spring release elastic potential energy, described roller bearing drives fan-shaped pressing plate along slide block upward sliding, described roller bearing drives dynamic clamping plate near clamp plate through transmission arm, realize Quick-clamped action.
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| CN113682925A (en) * | 2021-08-27 | 2021-11-23 | 日立电梯（中国）有限公司 | Device for realizing UCMP function and transformation method |
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