CN208037802U - A kind of drag device with safety tongs - Google Patents

A kind of drag device with safety tongs Download PDF

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Publication number
CN208037802U
CN208037802U CN201721838714.5U CN201721838714U CN208037802U CN 208037802 U CN208037802 U CN 208037802U CN 201721838714 U CN201721838714 U CN 201721838714U CN 208037802 U CN208037802 U CN 208037802U
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CN
China
Prior art keywords
worm
motor
wheel
traction
car
Prior art date
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Expired - Fee Related
Application number
CN201721838714.5U
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Chinese (zh)
Inventor
陈庆
邓健
李军
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Shaanxi Xiaoxi Electromechanical Technology Co Ltd
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Shaanxi Xiaoxi Electromechanical Technology Co Ltd
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00Kinds or types of lifts in, or associated with, buildings or other structures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04Driving gear ; Details thereof, e.g. seals
    • B66B11/08Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04Driving gear ; Details thereof, e.g. seals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04Driving gear ; Details thereof, e.g. seals
    • B66B11/0415Driving gear ; Details thereof, e.g. seals actuated manually, e.g. additional safety system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system
    • B66B5/0031Devices monitoring the operating condition of the elevator system for safety reasons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02Cages, i.e. cars
    • B66B11/0226Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/12Arrangements for effecting simultaneous opening or closing of cage and landing doors
    • B66B13/125Arrangements for effecting simultaneous opening or closing of cage and landing doors electrical
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
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    • B66B11/0005Constructional features of hoistways
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/26Positively-acting devices, e.g. latches, knives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04Driving gear ; Details thereof, e.g. seals
    • B66B11/043Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B66B1/00Control systems of elevators in general
    • B66B1/34Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/365Means for stopping the cars, cages, or skips at predetermined levels mechanical
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B66B11/0035Arrangement of driving gear, e.g. location or support
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02Cages, i.e. cars
    • B66B11/026Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
    • B66B11/0293Suspension locking or inhibiting means to avoid movement when car is stopped at a floor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04Driving gear ; Details thereof, e.g. seals
    • B66B11/043Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0446Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with screw-nut or worm-screw gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/12Arrangements for effecting simultaneous opening or closing of cage and landing doors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02Door or gate operation
    • B66B13/14Control systems or devices
    • B66B13/16Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/165Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
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    • B66B17/12Counterpoises
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0037Performance analysers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0043Devices enhancing safety during maintenance
    • B66B5/005Safety of maintenance personnel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087Devices facilitating maintenance, repair or inspection tasks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087Devices facilitating maintenance, repair or inspection tasks
    • B66B5/0093Testing of safety devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/021Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/028Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044Mechanical overspeed governors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/08Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for preventing overwinding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00Other common features of elevators
    • B66B7/02Guideways; Guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00Other common features of elevators
    • B66B7/06Arrangements of ropes or cables
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00Other common features of elevators
    • B66B7/06Arrangements of ropes or cables
    • B66B7/08Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Elevator Door Apparatuses (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The utility model discloses a kind of drag devices with safety tongs, it include the elevator control system for controlling elevator operation, traction machine, the traction sheave being connected with traction machine, the hoist ropes of winding on the traction sheave, hoist ropes one end connects car, the other end connects counterweight, the coaxially connected worm gear of traction sheave, worm and wheel is meshed, to constitute the lockable mechanism of traction sheave, worm screw is connected with a protection motor, protection motor and traction machine are all made of servo motor and are made, isochronous controller controls traction machine according to the transmission ratio of worm and wheel and protects the rotating speed of motor respectively, keep the rotating ratio of worm and wheel synchronous with the holding of the transmission ratio of worm and wheel;When protecting motor load to be more than maximum set value, the power supply of elevator control system tripping protection motor and traction machine is provided with car safety on car.The utility model can realize the reliable braking of traction sheave when elevator device has a power failure or breaks down, and be effectively prevented from car and rush to summit or the safety accident at crouching bottom.

Description

A kind of drag device with safety tongs
Technical field
The utility model is related to technical field of elevator manufacturing, more particularly, to a kind of safe elevator traction mechanism.
Background technology
In skyscraper, elevator is a kind of corollary equipment of indispensability, can be brought great convenience to occupant.Mesh Before, with the development of economy, middle high-income group largely occurs, and the demand of villa is also being continuously increased, and correspondingly, is suitable for The home lift of villa class building also begins to prevalence.Elevator includes mainly hoistway, a sedan-chair being liftably arranged in hoistway Compartment, the driving mechanism to drive car to lift, currently, driving mechanism is traction-type driving mechanism mostly comprising one sets The traction machine in well headroom is set, traction machine connects traction sheave, and hoist ropes is arranged on traction sheave, and one end of hoist ropes connects sedan-chair Compartment, the other end connects a counterweight that can be lifted in hoistway, to balance the weight of car, to reduce the negative of traction machine It carries.When the forward and reverse rotation of traction machine driving traction sheave, the hoist ropes of winding on the traction sheave moves back and forth, to realize car Lifting, and counterweight is then reversely lifted with car.
Due to traction sheave make by frictional force drives hoist ropes movement, after elevator is used for a long time, hoist ropes with It easy tos produce slipping phenomenon or control system between traction sheave to fail to the control of traction machine, so as to cause the quick of car It rushes to summit or crouching bottom, less serious case leads to the impaired of passenger's body and elevator, serious to result even in passenger's death.For this purpose, people set The various device and method that car safety when elevator is run can be improved are counted, wherein most important mode is set on traction machine Set the arrestment mechanism of an Electromagnetic Control.When elevator power failure or because elevator failure control system cuts off the power supply of elevator When, electromagnet dead electricity in arrestment mechanism and lose electromagnetic attraction, arrestment mechanism is acted by the active force of tripping spring at this time, i.e., Locking braking can be realized to traction machine;And elevator is when having electricity, the electromagnet in arrestment mechanism obtain it is electric, to make arrestment mechanism release To the locking of traction machine, elevator can normal operation.
For example, disclosed one kind " elevator traction machine " in Chinese patent literature, notification number CN2401528Y, including One end of pedestal, motor, worm gear case, worm screw, worm gear shaft, hanging feet, worm gear, traction sheave, arrestment mechanism, the worm gear shaft is equipped with partially Heart set is equipped with tie-plate in the middle part of worm gear shaft, and tie-plate one end is mutually solid with worm gear, the other end and traction sheave mutually admittedly, in tie-plate and Bearing is respectively set between worm gear and between tie-plate and traction sheave, adjustment is equipped in a pair of of hanging feet bottom of setting worm gear shaft Gasket.When work, first power on, so that arrestment mechanism is in energized state by controlling switch, while motor passes through worm screw band Dynamic worm gear operating, and then drive traction sheave rotation, the rope of winding on the traction sheave that can drive lift car by tie-plate Lifting.When car runs to scheduled a certain destination, motor is set to stall by actuating control switch, while by brake Structure is dynamic.Braking principle is as follows:When motor power-off, the solenoid valve dead electricity of arrestment mechanism, the work that a pair of of band-type brake passes through spring force With locking braked wheel, motor shaft is set to stall rapidly by embracing the frictional force between the cap watt and braked wheel explained, to make elevator car Compartment is stabilized ground stop layers.
However existing elevator traction mechanism still has following defect in secure context:Due to existing arrestment mechanism Power comes from spring and electromagnet, and the frequency of use of arrestment mechanism is extremely low, that is to say, that arrestment mechanism is usually all in one Kind static standby mode when therefore, it is necessary to brake, is easy to lead to the failure of braking, Huo Zheyin because of the reasons such as stuck of spring The stuck of electromagnet causes arrestment mechanism to be difficult to reset unlock.In addition arrestment mechanism in locking traction machine or traction sheave still Make by frictional force realization, therefore the reliability of its locking is not high.
Utility model content
Purpose of the utility model is to solve be difficult to reliably braking, safety present in existing elevator traction mechanism Property not high problem, a kind of drag device with safety tongs is provided, can realize and drag when elevator device has a power failure or breaks down The reliable braking of running wheel is effectively prevented from car and rushes to summit or the safety accident at crouching bottom.
To achieve the goals above, the utility model uses following technical scheme:
A kind of drag device with safety tongs, including:
Elevator control system is used to control the operation and fault detect of elevator;
Traction machine, the power source as driving car lifting;
The hoist ropes of the traction sheave being connected with traction machine and winding on the traction sheave constitutes the action of driving car lifting Executing agency;
Worm gear mechanism, worm gear therein is coaxially connected with traction sheave, and worm and wheel is meshed, to constitute traction The lockable mechanism of wheel;
Lazy-tongs include the protection motor connected with worm screw, controllable traction machine and the synchronous control for protecting motor speed Device processed, protection motor use servo motor, the isochronous controller to control traction machine respectively according to the transmission ratio of worm and wheel With the rotating speed of protection motor, keep the rotating ratio of worm and wheel synchronous with the holding of the transmission ratio of worm and wheel;
Car safety is provided on car, car safety synchronizes drive rod by safety tongs and is connected with synchronizer, together Step device is connected with Lanyard, Lanyard deflecting roller is fixed on platform, the other end of Lanyard is connected with guarantor The counterweight of Lanyard tensioning is held, counterweight is in hoistway column.
When protecting motor and any one appearance of traction machine is abnormal, elevator control system tripping protection motor and traction machine Power supply.
A worm gear mechanism is arranged in the utility model, and worm gear and traction sheave are coaxially connected.It is known that worm gear Worm screw has self-locking, that is to say, that worm gear can not drive worm screw to rotate, and worm gear rotation can only be driven by worm screw.For this purpose, this A protection motor that worm screw can be driven to rotate is arranged in utility model, and protects motor and traction machine to be all made of and accurately control The servo motor of rotating speed.In this way, isochronous controller can need to control the rotating speed of traction machine according to the operation of car, at the same time, The rotating speed that motor is protected according to the gearratio control of worm and gear, makes to remain synchronous regime between worm screw, worm gear.Namely It says, worm gear at this time is to be driven by traction machine, and worm screw is then by motor-driven, the worm gear of protection as traction sheave It is in mutually independent state with worm screw, is hindered to make worm screw not formed to the rotation of worm gear, protection motor is in zero load State.When entire elevator device has a power failure, worm screw stops operating, you can reliable mechanical self-latching is formed to worm gear, to draging Running wheel forms reliable braking.When the exception that protection motor and the traction machine in the utility model occur may include:Traction machine Out of control that speed is caused to be more than maximum set value, worm gear can not be formed synchronous with worm screw at this time, and worm screw can hinder turning for worm gear automatically It is dynamic, to can avoid rapid aerating-holding or the crouching bottom of car;Traction machine protects motor is out of control to cause worm gear and worm screw cannot essence It is really synchronous, it can be formed between worm gear and worm screw at this time and contact with each other and interfere, protect the load of motor that can rise rapidly.In appearance When stating abnormal, elevator control system can tripping protection motor and traction machine power supply, traction sheave rely on worm and gear self-locking It acts on and reliably brakes, so that it is guaranteed that the safety of elevator operation.It is known that in the prior art, worm and gear is a kind of tool The transmission mechanism for having self-locking effect, in order to improve safety, some detectable car lifting speeds can be arranged in people on elevator Sensor, to cut off the power when fast lifting occurs in car and to brake traction machine.And the worm and gear of the utility model Both there is self-locking, while may make up a reliable mechanical sensing device, on the one hand ensure to go out in power failure or traction machine Traction sheave is reliably braked when existing abnormal conditions, on the other hand can timely perceive the improper operating of traction machine, Jin Erke Safety when significantly hoisting elevator is run.
Preferably, the facewidth of the worm screw is smaller 1-3mm than the space width of worm gear, when protection motor drives worm and wheel When keeping synchronous, discrete state is kept between worm tooth and worm-gear toothing.
The worm and gear of the utility model is not the transmission mechanism of a transmission power in elevator normal operation, due to The facewidth of worm screw is smaller 1-3mm than the space width of worm gear, therefore can have between worm tooth and the tooth socket of worm gear there are one gap, to Make to keep discrete state between worm tooth and worm-gear toothing, can avoid generating contact friction between worm and wheel, while reducing same Walk controller to traction machine, protect motor speed control accuracy requirement, avoid because traction machine, protection motor between rotating speed it is light Micro- deviation causes the frequent shutdown of elevator.
Preferably, one end of the worm screw is connected with protection motor, the other end of worm screw and one can drive worm screw to turn Dynamic rescue facility is associated.
When elevator exception occurs and shuts down, worm and gear brakes traction sheave, at this point, passenger can pass through the rescuing machine of auxiliary Structure drives worm screw rotation, to drive traction sheave rotation by worm gear, keeps car mobile and realizes flat bed nearby, passenger at this time Can remove manually elevator gate and layer door and realize and save oneself.Unlike the prior art, the rescuing machine of the utility model Structure not directly drives traction machine, that is to say, that during entire save oneself, traction sheave be in always worm and gear from lock control Under system, rescue facility positively can drive traction sheave to rotate, on the contrary, traction sheave can not reversely drag rescue facility's action, from And be effectively prevented from because the reasons such as the part getting stuck of rescue facility or error cause car rush to summit or crouching bottom.
Preferably, the rescue facility includes the rescue motor being connect with worm screw, the rescue motor and a standby electricity Source is electrically connected.
In elevator normal operation, rescue motor is in shutdown status;When elevator occur having a power failure or abnormal conditions and cut off Traction machine, protect motor power supply when, stand-by power supply can be rescue the motor short time in power supply, to make rescue motor that can drive Traction sheave rotates, and then makes car with low speed elevation and flat bed nearby.
Preferably, the stand-by power supply is accumulator.
Since in emergency relief, car flat bed nearby only need to be made, therefore, accumulator can be used as spare in we Power supply to be conducive to simplify structure, and facilitates passenger to use.
Preferably, the stand-by power supply is man-power generator, the man-power generator includes one and is arranged in car Manpower driving element, when the power supply of lazy-tongs and traction machine is cut off, the passenger in car can pass through manpower driving member Part makes the rotor of man-power generator rotate power generation, to drive rescue motor rotation, and then drives traction sheave by worm screw, worm gear Rotation.
Man-power generator is conducive to most passengers and realizes passenger self-rescue by way of self-generating, to can avoid because storing Battery malfunction caused by the reasons such as battery discharge leads to not save oneself, and is conducive to improve the reliability saved oneself.
Preferably, the manpower driving element includes the sliding slot being vertically situated in car side wall and is located on sliding slot Side and it is rotatably supported in the rotation axis on bearing block, rotation axis is connected with the rotor of man-power generator, is equipped in sliding slot Can slide up and down sliding block, and sliding block is hinged at the bar of trampling that can be rotated in perpendicular, and rotation axis is equipped with driving Wheel is equipped with one-way driving mechanism between driving wheel and rotation axis, one end of a traction rope is connected on sliding block, traction rope it is another End connect simultaneously wind on the drive wheel, be arranged with disc spring on the rotating shaft, the outer end of disc spring is connected with rotating wheel, disc spring it is interior End is connected with the bearing block of rotation axis, and the bar of trampling has there are one position of readiness straight up and is turned out to level The operating position of state, when trampling bar and being in operating position, passenger can trample downwards bar, to be moved downwards with movable slider It is dynamic, and then drive driving wheel to rotate forward by traction rope, disc spring takes up accumulation of energy at this time, and driving wheel passes through one-way driving mechanism band Turn moving axis rotates, and rotor is driven to rotate and generate electricity;When sliding block moves down in place, bar is trampled in release, and disc spring discharges energy Amount, to drive driving wheel to rotate backward, traction rope band movable slider moves up reset at this time.
Preferably, the car safety is oblique voussoir and is divided into inside and outside two layers that wherein outer layer is equipped with upper safety Clamp jaw and lower safety tongs jaw;Wherein internal layer is equipped with upper driving plate and lower driving plate, and upper driving plate is clamped in the upper safety tongs The back side of mouth, for the lower driving plate at the back side of the lower safety jaw, the driving component includes upper reset spring, upper driving Spring, drive block, driver framework, lower driving spring, lower resetting spring, guide rod, upper hinge and lower jaw;The upper hinge and Lower jaw is separately positioned on the upper and lower side of bidirectional safety tongs for elevator internal layer, the guide rod setting the upper hinge and it is described under Between hinge, the upper reset spring, the upper driving spring, the drive block, the driver framework, the lower driving spring It is co-axially located on the guide rod with the lower resetting spring;The upper reset spring is arranged in the upper hinge and the drive Between dynamic frame, the lower resetting spring is arranged between the lower jaw and the driver framework, and the drive block setting exists In the middle part of the driver framework, the upper driving spring is arranged between the top of the drive block and the driver framework upper end, The lower driving spring is arranged between the lower section of the drive block and the driver framework lower end, and the driver framework connects institute It states safety tongs and synchronizes drive rod.
It is known that the strength of people's leg is significantly larger than the strength of hand, for this purpose, the utility model is creatively in car Side wall on setting one it is moving up and down trample bar, when needing emergency relief, passenger can be fluctuated and trample bar outward, make to trample Bar is in horizontal operating position, and passenger can easily trample bar at this time, is moved down to make to trample bar band movable slider, And then driving wheel is driven to rotate forward by traction rope.Disc spring gradually takes up and accumulation of energy at this time, and driving wheel passes through single-direction transmission machine Structure drives rotation axis rotation, and rotor is driven to rotate and generate electricity;When sliding block moves down in place, bar is trampled in release, and disc spring is released Exoergic amount, to drive driving wheel to rotate backward, traction rope band movable slider moves up reset at this time.So on circulate, you can real The lasting power generation of existing man-power generator.
Therefore, the utility model has the advantages that:Traction can be realized when elevator device has a power failure or breaks down The reliable braking of wheel is effectively prevented from car and rushes to summit or the safety accident at crouching bottom.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model.
Fig. 2 is a kind of structural schematic diagram of manpower driving element;
Fig. 3 is the structural schematic diagram of car safety in the utility model.
In figure:1, traction machine 2, worm gear mechanism 4, traction sheave 41, hoist ropes 5, protection motor 6, rescue motor 7, mounting platform 8, car 81, sliding slot 82, rotation axis 821, bearing block 83, sliding block 84, trample bar 85, driving wheel 86, traction rope 87, disc spring 103, upper reset spring 104, upper driving spring 105, drive block 106, driver framework 107, Lower driving spring 108, lower resetting spring 109, guide rod 110, upper driving plate 111, lower driving plate 112, upper hinge 113, lower jaw 217, synchronizer 218, safety tongs synchronize drive rod 26, Lanyard.
Specific implementation mode
The utility model is further described with specific implementation mode below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of drag device with safety tongs, including the mounting platform 7 that is arranged at the top of elevator shaft On traction machine 1, traction machine is using servo motor, and in order to accurately control its rotating speed, carrying means are at driving car liter The power source of drop.A coaxially connected traction sheave 4 on the output shaft of traction machine is arranged with hoist ropes 41, hoist ropes on traction sheave One end around being connected with car 8 after angle pulley, the other end of hoist ropes around being connected with counterweight 9 after angle pulley, Traction sheave collectively forms the action actuating mechanism of driving car lifting with hoist ropes.When traction machine output torque is to drive traction sheave When rotation, the hoist ropes one end of winding on the traction sheave declines, and the other end rises, to drive the lifting of car.When with traction When the car that one end connects of restricting rises, what is connect with the hoist ropes other end declines to re-synchronizing;Conversely, connecting when with hoist ropes one end When the cage descending connect, what is connect with the hoist ropes other end rises to re-synchronizing.
In addition, the utility model needs that a worm gear mechanism 2 is arranged, the wheel shaft of wherein worm gear and traction sheave coaxially connects It connects, the worm and wheel engagement being arranged on mounting platform.Since the worm and gear of intermeshing together has self-locking, That is, worm gear can not drive worm screw to rotate, worm gear rotation can only be driven by worm screw.Therefore, intermeshing worm and gear It may make up the lockable mechanism of traction sheave.
Certainly, in order to ensure the normal operation of elevator, the utility model further includes a lazy-tongs, so as to make worm screw with The rotating ratio of worm gear is synchronous with the holding of the transmission ratio of worm and wheel.That is, when traction sheave and worm gear stop operating, snail Bar remains stationary, worm screw at this time can form worm gear reliable self-locking;When the rotation of traction machine driving traction sheave, to make car When lifting, worm gear follows wheel rotation, and lazy-tongs make worm screw rotate at this time, and makes rotating ratio and the worm screw of worm and wheel It is synchronous with the holding of the transmission ratio of worm gear.In this way, worm screw will not form worm gear self-locking, traction sheave can normal rotation, and worm gear Distinguish right traction sheave and lazy-tongs driving with worm screw, there is no the transmission of torque, synchronous machine at this time between worm gear and worm screw Structure is in light condition.When elevator power failure or system occur abnormal, lazy-tongs and traction sheave are cut off the power simultaneously, this When worm screw reliable self-locking can be formed to worm gear.It is understood that the utility model also needs one elevator controlling of setting System to control the operation of elevator, while detecting the failure or abnormal conditions of elevator, timely moved to make Make, to ensure the safety of elevator operation.Since elevator control system is the prior art that all elevators all have, Specific description is not done in the present embodiment.
Specifically, the lazy-tongs of the utility model include the isochronous controller with servo control module, connect with worm screw The protection motor 5 connect, protection motor equally use servo motor, isochronous controller to accurately control traction machine and protect motor Rotating speed.Isochronous controller controls the rotating speed of traction machine according to the operating condition of lift car first, then according to worm and wheel Gearratio control protection motor rotating speed, so that it is guaranteed that the transmission ratio of the rotating ratio of worm and wheel and worm and wheel keep It is synchronous, and then make worm and worm wheel that independent rotation, protection motor at this time be kept to be in light condition.If the traction machine of elevator Rotating speed control occur it is abnormal, generated so as to cause car lifting speed it is abnormal, or protection motor rotating speed control occur it is different Often, worm gear and the rotating speed of worm screw can not match at this time, be interfered with each other to be formed between worm and gear, drive worm screw at this time Protect the load of motor can rapid increase.When protection motor load is more than maximum set value or traction machine and protection motor When deviation between rotating speed and setting value is more than permissible value, it is abnormal that elevator control system assert that elevator device occurs, and cuts at this time The power supply of disconnected protection motor and traction machine, makes worm screw constitute the reliable self-locking to worm gear, to realize the reliable braking of traction sheave, It avoids car occurs rushing to summit or the safety accident at crouching bottom.As long as it should be noted that protecting the rotating speed of motor in the utility model When normal, then traction sheave can not drive worm gear quick rotation.And if when the rotating speed of protection motor is too fast, it loads in meeting rapidly Rise, elevator control system can tripping protection motor and traction machine power supply, so that it is guaranteed that elevator operation safety.
In addition, the facewidth of the utility model worm screw 1-3mm small than the space width of worm gear, preferred value 2mm.In this way, When protecting motor driving worm and wheel to keep synchronous, can make to keep discrete state between worm tooth and worm-gear toothing.Namely It says, the gap of best 1mm is kept between worm tooth and worm-gear toothing, to avoid friction interference is generated between worm and worm wheel, it is ensured that Protection motor is in light condition.
In order to which when elevator breaks down, the timely of passenger is saved oneself, corresponding rescue facility can be arranged in we, so as to tight Anxious moment driving worm screw rotation, and then traction sheave rotation is driven by worm gear.Specifically, we can make one end and the protection of worm screw Motor is connected, and the other end of worm screw is connected with a rescue motor 6, which is usually in shutdown status, that is, It says, the motor shaft for rescuing motor follows worm gear to rotate together.When elevator occur having a power failure or abnormal conditions and cut off traction machine, protection When the power supply of motor, passenger can press the button of saving oneself in car, to start rescue motor, rescue motor at this time and can be driven Worm screw rotates, and then drives worm gear rotation by worm screw, final to drive traction sheave rotation, keeps car mobile and realizes and put down nearby Layer, passenger can leave car in time and complete to save oneself.
In order to ensure reliably saving oneself in any case, a stand-by power supply being made of accumulator can be arranged in we, from And it is rescue motor power supply in elevator power failure.In addition, stand-by power supply can also be one by the small-sized manpower of manually driven Generator, so that the passenger in car completes emergent self-rescue by man-power generator self-generating for rescue motor power supply.It should Man-power generator includes the generator unit for having stator and rotor(It is not shown in figure), for drive rotor rotate manpower driving Element.Passenger in car can make the rotor of man-power generator rotate power generation by manpower driving element, to drive rescue electricity Machine rotates, and then drives traction sheave rotation by worm screw, worm gear.
Further, as shown in Fig. 2, manpower driving element includes the sliding slot 81 being vertically situated in car side wall and position Above sliding slot and the rotation axis 82 that is rotatably supported on bearing block 821, rotation axis are connected with the rotor of generator unit, To make rotation axis directly rotor can be driven to rotate.Preferably, chain can be respectively set on the armature spindle of rotation axis and generator unit It takes turns, winding driving chain between two sprocket wheels is connected to make rotation axis pass through driving chain with rotor.In this way, we can Generator unit is arranged at the top of car, to facilitate structure to arrange.In addition, the sliding block that can slide up and down is arranged in sliding slot 83, what being hinged at of sliding block can rotate in perpendicular tramples bar 84, and it is standby there are one straight up to trample bar tool It position and is turned out to the operating position of horizontality.When trampling bar and being in position of readiness, tramples bar and be close to the interior of car Side wall;When trampling bar and being in operating position, the limited block on sliding block, which makes to trample bar, is maintained at horizontality, in order to passenger to Under trample bar.
Certainly, we also need to that a driving wheel 85 is arranged on the rotating shaft, the race of the edge setting U-shaped of driving wheel, And one-way driving mechanism is set between driving wheel and rotation axis.On sliding block connect a traction rope 86, traction rope it is another End connects and in the race of driving wheel.In this way, when passenger tramples bar downwards, you can band movable slider moves downwards It is dynamic, to drive driving wheel to rotate forward by traction rope, and then rotation axis rotation is driven by one-way driving mechanism, with driving Rotor is rotated and is generated electricity.It should be noted that we can also be located at one disc spring of rotating wheel side position winding on the rotating shaft 87, the outer end of disc spring is connected with the side of rotating wheel, and the inner end of disc spring is connected with the bearing block of rotation axis.As such, it is desirable to When rescue, passenger can will first trample bar and be turned out to horizontal operating position, bar then be trampled downwards, to drive cunning Block moves down, and then drives driving wheel to rotate forward by traction rope, and disc spring takes up accumulation of energy at this time, and driving wheel is by unidirectionally passing Motivation structure drives rotation axis rotation, and rotor is driven to rotate and generate electricity;When sliding block moves down in place, bar, disk are trampled in release Spring releases energy, and to drive driving wheel to rotate backward, traction rope band movable slider moves up reset at this time.It so moves in circles, i.e., Man-power generator can be made to continue to generate electricity.
Further, as shown in figure 3, being provided with car safety, sedan-chair on another cornerwise position of car top frame Compartment safety tongs synchronizes drive rod 218 by safety tongs and is connected with synchronizer 217, and synchronizer is connected with Lanyard 26, platform On be fixed with Lanyard deflecting roller, the other end of Lanyard is connected with the counterweight for keeping Lanyard tensioning, matches It is in hoistway column again.Car safety is oblique voussoir and is divided into inside and outside two layers that wherein outer layer is equipped with upper safety tongs pincers Mouth and lower safety tongs jaw, wherein internal layer are equipped with upper driving plate 110 and lower driving plate 111, and upper driving plate 110 is clamped in upper safety tongs The back side of mouth, for lower driving plate 111 at the back side of lower safety jaw, drive component includes upper reset spring 103, upper driving spring 104, drive block 105, driver framework 106, lower driving spring 107, lower resetting spring 108, guide rod 109, upper hinge 112 and under Hinge 113;Upper safety tongs jaw and lower safety tongs jaw are oblique voussoir, and the upper safety tongs jaw back side is equipped with upper driving plate 110, Lower 102 back side of safety tongs jaw is equipped with lower driving plate 111;Guide rod 109 is arranged between upper hinge 112 and lower jaw 113, on Resetting spring 103, upper driving spring 104, drive block 105, driver framework 106, lower driving spring 107 and lower resetting spring 108 It is co-axially located on guide rod 109;Upper reset spring 103 is arranged between upper hinge 112 and driver framework 106, lower reset bullet Spring 108 is arranged between lower jaw 113 and driver framework 106, and the setting of drive block 105 is in 106 middle part of driver framework, upper driving bullet Spring 104 is arranged between 106 upper end of the top of drive block 105 and driver framework, and lower driving spring 107 is arranged in drive block 105 106 lower end of lower section and driver framework between, driver framework 106 connect safety tongs synchronize drive rod 218.
After safety tongs action, upper reset spring 103 and lower resetting spring 108 play reset role when unlock, make drive block 105 Restore to drive upside down position in plate to what elevator car safety clamped, safety tongs synchronizes drive rod and restores horizontal position.Lifting rod moves When, 2 safety tongs may not simultaneously clamp on guide rail, and lower driving spring 107 can drive car safety not in place at this moment Continue to clamp, realizes that 2 safety tongs basic synchronizations clamp.

Claims (7)

1. a kind of drag device with safety tongs, characterized in that including:
Elevator control system is used to control the operation and fault detect of elevator;
Traction machine, the power source as driving car lifting;
The action that the hoist ropes of the traction sheave being connected with traction machine and winding on the traction sheave constitutes driving car lifting executes Mechanism;
Worm gear mechanism, worm gear therein is coaxially connected with traction sheave, and worm and wheel is meshed, to constitute traction sheave Lockable mechanism;
Lazy-tongs include the protection motor, controllable traction machine and the isochronous controller for protecting motor speed being connect with worm screw, Protect motor that servo motor, the isochronous controller is used to control traction machine and protection respectively according to the transmission ratio of worm and wheel The rotating speed of motor keeps the rotating ratio of worm and wheel synchronous with the holding of the transmission ratio of worm and wheel;
When protecting motor and any one appearance of traction machine is abnormal, the electricity of elevator control system tripping protection motor and traction machine Source;
Car safety is provided on car, car safety synchronizes drive rod by safety tongs and is connected with synchronizer, synchronizer It is connected with Lanyard, Lanyard deflecting roller is fixed on platform, the other end of Lanyard is connected with holding peace The counterweight of full traction rope tensioning, counterweight are in hoistway column.
2. a kind of drag device with safety tongs according to claim 1, characterized in that the facewidth of the worm screw compares snail The small 1-3mm of space width of wheel, when protecting motor driving worm and wheel to keep synchronous, holding point between worm tooth and worm-gear toothing From state.
3. a kind of drag device with safety tongs according to claim 1, characterized in that one end of the worm screw and guarantor Shield motor is connected, and the other end of worm screw is associated with the rescue facility that one can drive worm screw to rotate.
4. a kind of drag device with safety tongs according to claim 3, characterized in that the rescue facility include with The rescue motor of worm screw connection, the rescue motor are electrically connected with a stand-by power supply.
5. a kind of drag device with safety tongs according to claim 4, characterized in that the stand-by power supply is electric power storage Pond.
6. a kind of drag device with safety tongs according to claim 4, characterized in that the stand-by power supply is manpower Generator, the man-power generator include a manpower driving element being arranged in car, when lazy-tongs and traction machine When power supply is cut off, the passenger in car can make the rotor of man-power generator rotate power generation by manpower driving element, to drive Dynamic rescue motor rotation, and then traction sheave rotation is driven by worm screw, worm gear.
7. a kind of drag device with safety tongs according to claim 6, characterized in that the manpower driving element packet It includes the sliding slot being vertically situated in car side wall and above sliding slot and is rotatably supported in the rotation axis on bearing block, Rotation axis is connected with the rotor of man-power generator, the sliding block that can slide up and down is equipped in sliding slot, being hinged at for sliding block can What is rotated in perpendicular tramples bar, and rotation axis is equipped with driving wheel, and single-direction transmission machine is equipped between driving wheel and rotation axis One end of structure, a traction rope is connected on sliding block, and the other end of traction rope is connected and wound on the drive wheel, on the rotating shaft around Equipped with disc spring, the outer end of disc spring is connected with rotating wheel, and the inner end of disc spring is connected with the bearing block of rotation axis, described to trample bar Have there are one position of readiness straight up and be turned out to the operating position of horizontality, operating position is in when trampling bar When, passenger can trample downwards bar, to be moved down with movable slider, and then drive driving wheel forward direction to turn by traction rope Dynamic, disc spring takes up accumulation of energy at this time, and driving wheel drives rotation axis to rotate by one-way driving mechanism, and rotor is driven to rotate and send out Electricity;When sliding block moves down in place, bar is trampled in release, and disc spring releases energy, and to drive driving wheel to rotate backward, leads at this time Messenger band movable slider moves up reset.
CN201721838714.5U 2017-10-17 2017-12-25 A kind of drag device with safety tongs Expired - Fee Related CN208037802U (en)

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CN2017109651374 2017-10-17
CN201710965137 2017-10-17

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CN208037802U true CN208037802U (en) 2018-11-02

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Family Applications (38)

Application Number Title Priority Date Filing Date
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Family Applications Before (23)

Application Number Title Priority Date Filing Date
CN201711298667.4A Pending CN109665418A (en) 2017-10-17 2017-12-08 A kind of elevator traction mechanism
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Application Number Title Priority Date Filing Date
CN201711425682.0A Pending CN109665429A (en) 2017-10-17 2017-12-25 A kind of gate layer door system based on safety return circuit detection
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CN201711424564.8A Pending CN109665402A (en) 2017-10-17 2017-12-25 A kind of drag device with manual rescue mechanism
CN201711424491.2A Pending CN109665421A (en) 2017-10-17 2017-12-25 Elevator traction mechanism with safety return circuit detection system
CN201721839486.3U Expired - Fee Related CN208037765U (en) 2017-10-17 2017-12-25 A kind of drag device with manual rescue mechanism
CN201711425729.3A Pending CN109665396A (en) 2017-10-17 2017-12-25 The anti-error telephone-moving structure of elevator lifting
CN201721837178.7U Expired - Fee Related CN208054690U (en) 2017-10-17 2017-12-25 Elevator configured with safety return circuit detecting system and manual rescue device
CN201711425732.5A Pending CN109665423A (en) 2017-10-17 2017-12-25 A kind of drag device with rescue door machine
CN201711425674.6A Pending CN109665422A (en) 2017-10-17 2017-12-25 Elevator configured with safety return circuit detection system and manual rescue device
CN201711425687.3A Pending CN109665407A (en) 2017-10-17 2017-12-25 A kind of two-shipper towed elevator based on safety return circuit detection
CN201810668905.4A Active CN109665424B (en) 2017-10-17 2018-06-26 Self-locking elevator for preventing mistaken movement of flat floor
CN201820989189.5U Expired - Fee Related CN208544986U (en) 2017-10-17 2018-06-26 A kind of anti-error shifting self locking elevator of leveling

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CN109665420A (en) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 A kind of drag device with safety tongs
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CN112047224A (en) * 2020-08-24 2020-12-08 杭州新马电梯有限公司 Counterweight-free center opening door elevator

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