CN208054690U - Elevator configured with safety return circuit detecting system and manual rescue device - Google Patents
Elevator configured with safety return circuit detecting system and manual rescue device Download PDFInfo
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- CN208054690U CN208054690U CN201721837178.7U CN201721837178U CN208054690U CN 208054690 U CN208054690 U CN 208054690U CN 201721837178 U CN201721837178 U CN 201721837178U CN 208054690 U CN208054690 U CN 208054690U
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- switch
- safety
- worm
- return circuit
- rescue device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors
- B66B13/125—Arrangements for effecting simultaneous opening or closing of cage and landing doors electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0005—Constructional features of hoistways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/0415—Driving gear ; Details thereof, e.g. seals actuated manually, e.g. additional safety system
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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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/26—Positively-acting devices, e.g. latches, knives
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- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/365—Means for stopping the cars, cages, or skips at predetermined levels mechanical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/0035—Arrangement of driving gear, e.g. location or support
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- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/0293—Suspension locking or inhibiting means to avoid movement when car is stopped at a floor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0446—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with screw-nut or worm-screw gear
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- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors
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- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
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- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
- B66B13/165—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/12—Counterpoises
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
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- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- B66B5/0018—Devices monitoring the operating condition of the elevator system
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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
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- B66B5/0037—Performance analysers
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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
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
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- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
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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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
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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
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
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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
- B66B5/027—Applications 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
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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
- B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
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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
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
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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
- B66B5/08—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for preventing overwinding
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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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/08—Arrangements 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)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Types And Forms Of Lifts (AREA)
- Elevator Door Apparatuses (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model is related to a kind of elevators configured with safety return circuit detecting system and manual rescue device, solve the deficiencies in the prior art, technical essential includes manual rescue device, and hoist ropes end is wound on it, makes lift car leveling needing the hoist ropes releasably wound when rescue；Safety return circuit detecting system includes：Safety return circuit, including master switch, several limit switches and safety switch, power supply are connect by safety return circuit with main safety contactor coil；Several switch detection modules, each switch detection module is corresponding, and there are one master switch, limit switch or safety switches, the output end for switching detection module is communicated to connect by safety bus and upper-level control system, first test side of switch detection module is connect with the movable contact of master switch, limit switch or safety switch, and the second test side for switching detection module is connect with the stationary contact of master switch, limit switch or safety switch.
Description
Technical field
The utility model is related to a kind of drag devices, especially a kind of to be configured with safety return circuit detecting system and manual rescue
The elevator of device.
Background technology
In skyscraper, in order to adapt to the demand of height change, lifting gear is a kind of corollary equipment of indispensability, such as electricity
Ladder can bring great convenience to user.
Elevator is a kind of using motor as the vertical conveyor of power, also known as vertical lift.Vertical lift is hung equipped with box-like
Cabin multiplies people or carrying cargo for tier building.It is automatically controlled from the modernization of earliest first step safety escalator till now
Elevator, although by the development of centuries, the driving of elevator is most or uses traction-type driving mechanism, including one sets
The traction machine in well headroom is set, traction machine connects traction sheave, and hoist ropes is full of on traction sheave, and one end of hoist ropes connects sedan-chair
Compartment, the other end of hoist ropes connect the counterweight for balancing car weight.When traction machine driving traction sheave rotation, draged around being located at
Rub the tractive force of generation between hoist ropes and traction sheave on running wheel, realizes the elevating movement of car and counterweight.
In use, the accident of most serious is exactly rapid aerating-holding or the crouching bottom of car to elevator, and less serious case leads to passenger's body
Body and elevator it is impaired, it is serious to result even in passenger's death.For this purpose, people devise and various lift running safety can be improved
Property device and method, wherein most important mode be exactly on traction machine be arranged an Electromagnetic Control arrestment mechanism.Work as electricity
Ladder have a power failure or because elevator failure cause control system can not to elevator supply, electromagnet dead electricity in arrestment mechanism and lose
Magnetic power is removed, arrestment mechanism continues to act by the active force of tripping spring at this time, you can locking braking is realized to traction machine；
When elevator has electricity, the electromagnet in arrestment mechanism obtains electric, and to be arrestment mechanism contact to the locking of traction machine, elevator can be 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.
But the arrestment mechanism of this structure, band-type brake is needed to apply enclasping force, if the enclasping force of band-type brake is insufficient, sedan-chair
Compartment can not fast braking it is panic to be easy to cause in car passenger there is also lifting moving.And after band-type brake holds braking tightly, scene
It cannot achieve and save oneself, need to carry out external rescue by special rescue personnel by the mechanism of a series of complex, rescue waits for
Time it is long, than relatively hazardous, the passenger in car cannot be rescued the process of rescue at the first time, may be delayed and be rescued
The opportunity helped.
Utility model content
The utility model solve existing elevator by band-type brake carry out emergency braking, be easy because band-type brake enclasping force not
Foot, cause car can not fast braking, the defect that braking reliability is low, elevator safety is not high provides a kind of configured with safety
The elevator of circuit detecting system and manual rescue device, the energy fast braking when elevator device breaks down, and directly pass through one
The mode of kind of traction sheave locking carries out locking braking, and braking reliability is high, and car can effectively be avoided to rush to summit or the safe thing at crouching bottom
Therefore.
The utility model also solves existing elevator and can not save oneself, and external professional rescue team is needed to be rescued,
It is waiting for a long time in car, it is also easy to lose the defect of the first rescue time, provide a kind of configured with safety return circuit detecting system
With the elevator of manual rescue device, manual rescue device is carried, can be saved oneself by passenger in car, win the first rescue
Time improves elevator safety.
The specific technical solution of the utility model is：It is a kind of configured with safety return circuit detecting system and manual rescue device
Elevator, including：
Traction machine, as the power source of car lifting, the traction machine is connect by main safety contactor contact with power supply；
Traction sheave connect with traction machine and is driven by traction machine, and hoist ropes, traction wire saws car are arranged on traction sheave
Lifting；
Worm gear mechanism, worm gear is coaxially connected with traction sheave and is rotated synchronously in company with traction sheave, worm and wheel engagement
Constitute the lockable mechanism of traction sheave；
Lazy-tongs are connected with worm screw for driving worm screw rotation to keep synchronous with worm gear, when elevator runs well, snail
Worm and wheel is separated always；
Manual rescue device, hoist ropes end is wound on it, makes needing the hoist ropes releasably wound when rescue
Lift car leveling；
Safety return circuit detecting system includes：
Safety return circuit, including master switch, several limit switches and safety switch, power supply pass through safety return circuit and main safety
Contactor coil connects；
Several switch detection modules, each switch detection module is corresponding, and there are one master switch, limit switch or safety
Switch switchs the output end of detection module and is communicated to connect by safety bus and upper-level control system, switchs the of detection module
One test side is connect with the movable contact of master switch, limit switch or safety switch, switch the second test side of detection module with it is total
The stationary contact connection of switch, limit switch or safety switch；
Safety bus connects all switch detection modules and upper-level control system；
Upper-level control system receives the output signal of all switch detection modules by safety bus.
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 purely mechanic lazy-tongs are arranged to realize that worm and wheel synchronizes in utility model, and worm and wheel keeps synchronizing, worm screw
Self-locking would not be caused to worm gear, that is to say, that worm gear at this time is driven by traction machine as traction sheave, and worm screw
It is then to be driven by lazy-tongs, worm gear and worm screw are in mutually independent state, to make worm screw not turn to worm gear
Dynamic formed hinders.As long as lazy-tongs can realize that worm and wheel rotates synchronously, therefore can be the structure of electric-mechanic control system,
It can also be purely mechanic structure.When system blackout, worm screw stops operating, you can reliable mechanical self-latching is formed to worm gear,
To form reliable braking to traction sheave；When traction machine is out of control leads to velocity anomaly, worm gear can not be formed with worm screw it is synchronous,
Worm screw can hinder the rotation of worm gear automatically at this time, to can avoid car rapid aerating-holding or crouching bottom.It is known that in the prior art
In, worm and gear is a kind of transmission mechanism with self-locking effect, and in order to improve safety, people can be arranged on elevator
The sensor of detectable car lifting speed, to cut off the power when fast lifting occurs in car and to brake traction machine.And this
On the one hand the worm and gear of utility model has self-locking, while may make up a reliable mechanical sensing device, a side
Face ensures reliably to brake traction sheave when abnormal conditions occur in power failure or traction machine, on the other hand can timely perceive traction
The improper operating of machine, so can significantly hoisting elevator run when safety.The worm and gear of the utility model is in elevator
It is not the mechanism of a transmission power when normal operation, and the facewidth of worm screw can be smaller than the space width of worm gear, therefore worm screw
Gap there are one having between tooth and the tooth socket of worm gear can avoid to make to keep discrete state between worm tooth and worm-gear toothing
Contact friction is generated between worm and wheel, while reducing control accuracy of the isochronous controller to traction machine, synchronous motor rotating speed
It is required that avoiding the frequent shutdown of the elevator caused by the slight deviations of rotating speed between traction machine, synchronous motor.Certainly this be it is a kind of most
Good working condition, worm and wheel are not in contact, and would not also generate abrasion and noise etc., and this gap is also beneficial to
The fault-tolerant ability of elevator is improved, as long as keeping worm and wheel to synchronize in fact.The utility model includes a manual rescue
Device, manual rescue device are previously wound with the hoist ropes of one end sufficient length, when elevator faults operation exception, elevator cut-out
Power supply, worm gear mechanism self-locking, traction sheave stops operating, if there is passenger in car, needs to be rescued at the first time,
Avoid passenger in car panic, it at this time can be by discharging the hoist ropes wound so that lift car leveling, this flat bed can be with cars
Decline, can also be that car rises, mainly determined according further to the relationship between car overall weight and balance counterweight weight.
When elevator works normally, manual rescue device will enwind hoist ropes, hoist ropes cannot be made to unclamp, also just suitable at this time
With car it is fixed in hoist ropes.Manual rescue device can be operated by passenger in car, in this way, the passenger in car can
To save oneself at the first time.
In the utility model, safety return circuit is similar with the safety return circuit of conventional elevator, is all to have several safety devices, limit
The contacts of contactor of position device switchs and is that the master switch of button switch or other limit switches are constituted, root in the utility model
Be referred to as master switch, several limit switches and safety switch according to the difference of function, this equipment in elevator device compared with
It is common, for example, the upper limit position switch of elevator, lower position switch are known as limit switch in the present invention, in door machine
Limiting device have motor driving, in the limit switch the utility model configured in transmission process be also referred to as limit switch, peace
Full switch then represents contactless contactor of safety device in the utility model, such as traction motor detection switch etc., this practicality is new
It is not limited in type, all limit switches and safety switch are separately mounted to be configured with the Ministry of State Security of the elevator of two-shipper drag device
On part, it should be understood that all limit switch and safety switch, master switch are the prior art；Switch detection mould
Block itself has address when being connect with safety bus, switch detection module is made to have due to included controller
The mode of address includes but are not limited to connect with upper-level control system by distributed I/O, and the switch of the utility model detects mould
The element that block can be selected is more, does not limit specific element in the utility model, it is only necessary to which it is capable of providing detection and address
Function, any intelligent chip may be used in those skilled in the art, detection chip reaches corresponding function and this can be realized
The purpose of utility model, conventional elevator system establishing criteria are equipped with safety return circuit, i.e., are connected by several normally closed switch, control
The power supply of system active force element processed.When touching dangerous action triggers, corresponding switch just switches to open circuit by closed state
State, safety return circuit disconnect, and contactor unclamps in circuit, and system active force element loses power supply, and system stops.It ensures
Personnel safety.But in actual use, over time, each switch is during long-term through-flow, contact resistance by
Cumulative big, safety return circuit, which respectively switchs partial pressure, gradually to be increased, and the voltage acted on the contactor of control dynamical element is gradually reduced.
When pressure drop reaches certain value, contactor will unclamp, and elevator mistakenly stop is caused to stop, and cause failure.After maintenance staff reach scene
It is larger to need to find out failed element difficulty in numerous switches, it is mainly sharp using switch detection module in the utility model
With its own address signal, when there is open circuit in safety return circuit directly according to the corresponding limit switch of address signal detection and safety
Switch, master switch can quickly position failed element for maintenance staff, replace quasi- failed element in time and provide basis for estimation.
Upper-level control system itself can provide the data such as the position of failed element, can also record the component being easily damaged,
For the maintenance in later stage, even anticipation, early warning, can be completed by upper-level control system.Upper-level control system is to traction
Power resources including machine are controlled, this control mode is conventional control mode.
Preferably, lazy-tongs use servo motor, or using the purely mechanic kind of drive by worm screw and traction machine or
Person's traction sheave is connected.This is the type of two big lazy-tongs, and servo motor belongs to automatically controlled equipment, and current precision is relatively high,
But belong to automatically controlled, need other devices of otherwise designed for matching the rotation of servo motor and the rotation of traction machine；It is purely mechanic
The kind of drive is simple in structure, and the requirement to precision is relatively high, but cost is relatively low, and relatively reliable.
Preferably, manual rescue device includes locking system and the drive of the roller and locking roller for winding hoist ropes
The manual driving device of hoist ropes is loosened in dynamic roller rotation.Roller can rotate, and roller is for winding hoist ropes, in locking system
Locking under, roller is fixed from rotation, and the distance between hoist ropes and car will not change at this time, traction sheave work when
Car can be normally drawn by hoist ropes；When traction sheave locking needs rescue, the rotation of manual driving device driving drum, rolling
Cylinder discharges hoist ropes in rotation so that the long hair of the hoist ropes between traction sheave and car changes, and does not turn in traction sheave
In the case of dynamic, car can lift realization flat bed.
Preferably, locking system uses Worm and worm-wheel gearing, roller to be connected with worm gear, worm and wheel engages simultaneously
Keep the static formation locking of worm screw, manual driving device that worm screw rotation is driven to realize unlock and driving drum rotation.Worm and gear
There is transmission mechanism natural self-locking function, worm gear to be connected with roller, and in the case where worm screw stops, worm gear is locked up, simultaneously
Roller is also locked up, and when manual driving device driving worm screw rotation, worm gear could rotate and roller is driven to rotate at this time, Jin Ershi
Now unlock and car lifting.
The project plan comparison of manual driving device is more, can be various structures, preferably, manual driving device includes driving
Bar, the driving pulley being connected with drive rod, the synchronous belt of connecting worm and driving pulley, drive rod are extend into car.In sedan-chair
Rotation of drive rod in compartment, the driving pulley on drive rod pass through synchronous belt and drive worm screw rotation, worm drive turbine rotation, worm gear
Roller can be driven to rotate.
It restricts preferably, manual driving device includes driving, the driving wheel being connected with worm screw, driving rope is matched with driving wheel
It closes, driving rope is extend into car.The drawing driving rope in car, driving rope band move driving wheel rotation, and driving wheel drives worm screw
Rotation, worm drive turbine rotation, worm gear can drive roller to rotate.
Preferably, hoist ropes is two groups, roller is two and is corresponded in hoist ropes that each roller is all connected with one
A Worm and worm-wheel gearing is connected between the worm screw of two Worm and worm-wheel gearings by synchronous belt or passes through interlocking bar phase
Even.Two groups of hoist ropes draw car jointly so that the stress of car is more reasonable, and when drawing car, car lifting is compared
Steadily, two groups of hoist ropes match two rollers, each roller be all connected with again there are one Worm and worm-wheel gearing, when rescue, for reality
Existing car steadily lifts, and the worm screw of best two groups of Worm and worm-wheel gearings can rotate synchronously, therefore by same between two worm screws
Step band is connected, as long as driving synchronous belt rotation, you can while the rotation of two worm screws is driven, or driving wherein worm screw rotation, lead to
Crossing synchronous belt can drive another worm screw to rotate synchronously；Or be connected by interlocking bar, it can also realize that two worm screws rotate synchronously.
Preferably, traction machine, traction sheave, worm gear mechanism, lazy-tongs may be contained on mounting platform, rescue manually
Shaking apparatus is set on fixed frame, and fixed frame is fixed on car roof.
Preferably, being provided with flat bed limiting device on car.When rescue, car is typically all to decline, in order to determine sedan-chair
The height that compartment declines, there are two types of mode, one is the length by the hoist ropes discharged to determine, but sedan-chair when due to elevator faults
The position that compartment stops is different, therefore more difficult to control by the length passenger of hoist ropes, for transparent car, passes through
The release length of hoist ropes determines that cage descending height is also feasible, is exactly for second by flat bed limiting device, passenger
After discharging hoist ropes, lift car leveling is limited by flat bed limiting device, does not just have to passenger at this time and removes control hoist ropes
Discharge length, and the protective device that flat bed limiting device can decline again as car deliverance.
Preferably, switch detection module includes checking judgment module, timesharing cycle energization module and controller, the inspection
The output end for looking into judgment module is communicated to connect by safety bus and upper-level control system, and the inspection judgment module first detects
End is the high frequency output end being connect with the movable contact of master switch, limit switch or safety switch, checks the second inspection of judgment module
It is the pile-up pulse test side being connect with the stationary contact of master switch, limit switch or safety switch to survey end, checks judgment module
High-frequency signal input terminal is electrically connected with timesharing cycle energization module, and the control terminal of timesharing cycle energization module is electrically connected with controller
It connects.
Each switch detection module information in bus is gradually asked in the utility model in a cycle.Each switch detection
Switching information in collected respectively corresponding safety return circuit is sent to upper-level control system by module.At interval of for a period of time just
Operation is primary.During system power transmission, circular flow detects program.When detection program is not limited to elevator operation, elevator device waits for
It also needs to run when machine.
Each switch detection module is independently-powered, has the function of bus in own coding.The switch that will can respectively measure
Closed state and the analog signals of reflection contact resistance pass through bus feedback to host computer.Externally there is input terminal in module test side
Mouth and output port.High-frequency impulse can occur for output port, and the pulse signal sent out is filled by individual safety chain switches
Feed back inbound port.Input port has the function of step-by-step counting and analog measurement.Therefore, it in the utility model, is examined to first
It surveys end and is named as high frequency output end, the second test side is named as pile-up pulse test side, as long as in fact, random devices can reach
To one end high frequency output, second end pile-up pulse detection, you can realize the technical solution of the application, therefore, the utility model pair
Element model itself does not limit.
There are two types of the working conditions of the utility model,
Switch disconnects：Because pulse test circuit can not constitute circuit, the high-frequency impulse that signal detection end output port is sent out
Input port can not detect, judge that on off state disconnects.Without accumulation, it is 0 to measure analog quantity for pulse.Pass through signal transmission passage
It is disconnected to host computer feedback switch signal, the analog quantity of accumulation is 0.
Switch is closed：The high-frequency impulse that signal detection end output port is sent out detects the pulse of same frequency in input port
Signal judges that on off state is closed.The analog quantity of pulse accumulation can reflect switch contact resistance sizes.It is steady in supply voltage
Fixed, in the case of same detection cycle, the analog quantity is smaller, illustrates that switch contact resistance is bigger, and pulse energy loss is more.It should
Analog quantity is bigger, illustrates that contact resistance is smaller, and pulse energy is lost smaller.
Preferably, the power supply is connected by the input terminal of low-pass filter and safety return circuit, the output of safety return circuit
End is connect by a low-pass filter with main safety contactor coil, each to check that the pile-up pulse test side of judgment module is equal
It is connected with the stationary contact of corresponding master switch, limit switch or safety switch by a high-pass filter.In the utility model,
In actual use, over time, each switch is in long-term through-flow mistake for master switch, limit switch or safety switch
Cheng Zhong, contact resistance gradually increase, therefore cannot be equal to ideal circuit, check that the pulse of judgment module output end is reaching quiet
The direction of short circuit, i.e. pile-up pulse test side are selected behind contact, and pile-up pulse quantity is calculated by pile-up pulse test side, reaches meter
Calculate the effect of current resistance.
The utility model has the beneficial effects that：The reliable system of traction sheave can be realized when elevator device has a power failure or breaks down
It is dynamic, it is effectively prevented from car and rushes to summit or the safety accident at crouching bottom, then pass through manual rescue device and realize passenger self-rescue, mitigate passenger
Fear, and at the first time rescued；Failed element can quickly be positioned by being also maintenance staff, replace quasi- failed element in time
Provide basis for estimation.
Description of the drawings
Fig. 1 is a kind of overall structure diagram of the utility model；
Fig. 2 is a kind of two-shipper tracting structure schematic diagram of the utility model；
Fig. 3 is a kind of vertical view of manual rescue device of the utility model；
Fig. 4 is the axonometric drawing of structure shown in the utility model Fig. 3；
Fig. 5 is the vertical view of second of manual rescue device of the utility model；
Fig. 6 is the circuit diagram of the utility model safety return circuit system.
In figure：1, left counterweight, 2, left hoist ropes, 3, mounting platform, 4, left steering pulley, 5, traction sheave, 6, right turn slides
Wheel, 7, right hoist ropes, 8, right counterweight, 9, Worm and worm-wheel gearing, 10, right roller, 11, car, 12, flat bed limiting device,
13, platform, 14, roll left cylinder, 15, directive wheel, 16, synchronous belt, 17, traction machine, 18, shaft coupling, 19, servo motor, 20, worm gear
Worm mechanism, 21, encoder, 22, fixed frame, 23, Chang Liang, 24, short beam, 25, mounting bracket, 26, driving pulley, 27, drive rod,
28, driving wheel, 29, interlocking bar.
Specific implementation mode
Below by specific embodiment, and in conjunction with attached drawing, the utility model will be further described.
Embodiment 1：A kind of elevator configured with safety return circuit detecting system and manual rescue device（Referring to Fig. 1 Fig. 2 Fig. 3
Fig. 4）, including：Including traction machine 17, traction sheave 5, worm gear mechanism 20, lazy-tongs and manual rescue device.
On the mounting platform 3 that traction machine is arranged at the top of elevator shaft, the traction machine in the present embodiment uses servo motor,
The power resources that servo motor can be lifted with precision control rotating speed, traction machine as car, the traction machine pass through main safety
Contacts of contactor is connect with power supply.One end output of traction machine is coaxially connected by shaft coupling 18 and traction sheave.Traction sheave it is another
Side is connect by shaft coupling with worm gear mechanism.Hoist ropes is arranged on traction sheave, one end of hoist ropes is slided around steering
It is connected with car after wheel, for the other end of hoist ropes around being connected with counterweight after angle pulley, traction sheave is common with hoist ropes
Constitute the action actuating mechanism of traction car lifting.When traction machine output torque is to drive traction sheave to rotate, around being located at traction
Hoist ropes one end on wheel declines, and the other end rises, to draw the lifting of car.When on the car being connect with hoist ropes one end
When rising, what is connect with the hoist ropes other end declines to re-synchronizing；Conversely, when the cage descending being connect with hoist ropes one end, with
The connection of the hoist ropes other end rises to re-synchronizing.In the present embodiment, hoist ropes is two groups, and respectively left hoist ropes 2 and the right side are draged
Messenger 7, left hoist ropes are furnished with two left steering pulleys 4, and right hoist ropes is furnished with two right turn pulleys 6, and left hoist ropes connects left counterweight
1, right hoist ropes connects right counterweight 8.
Worm gear mechanism includes intermeshing worm gear and worm screw, and worm gear is coaxially connected with traction sheave and in company with traction sheave
It rotates synchronously, worm and wheel engagement constitutes the lockable mechanism of traction sheave.When elevator works normally, worm tooth and worm-gear toothing phase point
From there are symmetrical gap between worm tooth and worm-gear toothing, the gap is designed as 2mm in the present embodiment, and the gap of 2mm makes snail
Bar can there are one discontiguous rotational angles with respect to worm gear so that there is enough fault-tolerant surpluses between worm and wheel, in order to
Ensure that worm screw will not form locking to worm gear, just need to drive worm screw at this time so that the rotating speed of worm screw and turning for worm gear
Speed matches, and worm gear is rotated synchronously in company with traction sheave at this time, and worm screw rotates synchronously, and worm tooth remains and worm-gear toothing phase point
From.Worm gear mechanism is connected with encoder 21, and encoder is mainly the rotation for monitoring worm gear, is also carried out to the rotation of worm gear anti-
Feedback, that is, the working order of traction sheave can be monitored by encoder.
Lazy-tongs are to make worm and wheel keep rotating synchronously.That is, when traction sheave and worm gear stop turning
When dynamic, worm screw remains stationary, worm screw at this time can form reliably self-locking to worm gear；When traction machine driving traction sheave rotation, with
When just car being made to lift, worm gear follows traction sheave to rotate, and lazy-tongs make worm screw rotate at this time, and worm and wheel is made to keep
It is synchronous.In this way, worm screw will not form worm gear self-locking, traction sheave can normal rotation, and worm gear and worm screw are respectively by traction sheave
It is driven with lazy-tongs, there is no the transmission of torque, lazy-tongs to be at this time substantially at light condition between worm gear and worm screw.
When elevator power failure or system occur abnormal, lazy-tongs and traction sheave are cut off the power simultaneously, and worm screw at this time can be to snail
Wheel forms reliable self-locking.Servo motor may be used in lazy-tongs, or uses the purely mechanic kind of drive by worm screw and traction
Machine or traction sheave are connected.Servo motor 19, servo motor is used to accurately control the rotating speed of worm screw in the present embodiment.Root first
The rotating speed that traction machine is controlled according to the operating condition of lift car, then according to the gearratio control servo motor of worm and wheel
Rotating speed, so that it is guaranteed that worm and wheel is synchronous and worm and worm wheel is made to keep independent rotation, servo motor at this time only drives
Worm screw rotates, and is equivalent to light condition.If there is exception in the rotating speed control of the traction machine of elevator, so as to cause car lifting speed
The rotating speed control appearance of degree generation exception or servo motor is abnormal, and worm gear and the rotating speed of worm screw can not match at this time, thus
It is formed and is interfered with each other between worm and gear, elevator control system is switched off the power supply of entire elevator at this time, and worm screw at this time stops
Rotation may make up reliable self-locking to worm gear, to realize the reliable braking of traction sheave, avoids occurring car and rushes to summit or crouching bottom
Safety accident.
In order to which when elevator breaks down, the timely of passenger is saved oneself, we are provided with corresponding manual rescue device, are draging
When drawing mechanism generation locking, the quick flat bed of car is realized to draw car using hoist ropes by manual rescue device.Hand
Dynamic deliverance apparatus includes that traction is loosened in locking system and the driving drum rotation of the roller and locking roller for winding hoist ropes
The manual driving device of rope.In the present embodiment, hoist ropes is two groups, therefore roller is also two groups, is roll left cylinder 14 and the right side respectively
Roller 10, each roller are respectively connected with a Worm and worm-wheel gearing 9.The worm gear of Worm and worm-wheel gearing and corresponding roller
Coaxial fixed, worm screw is vertically arranged to be engaged with worm gear.Manual driving device drives worm screw rotation to realize that simultaneously driving drum turns for unlock
Dynamic, cage descending is steady in order to control, and two rollers need to rotate synchronously while discharge isometric hoist ropes, it is therefore desirable to while two snails
Bar rotates synchronously, it is necessary to which two worm screws are linked.It is formed and is linked by synchronous belt 16 in the present embodiment, between two worm screws, it is synchronous
Band coordinates with directive wheel 15, changes the trend of synchronous belt so that has more Contact Tooth between synchronous belt and worm screw.This implementation
Manual driving device in example includes drive rod 27, the driving pulley 26 being connected with drive rod, driving pulley and 16 phase of synchronous belt
Cooperation, drive rod is extend into car can be by the passenger operation in car, rotation of drive rod, drive rod drive main belt rotation
Dynamic, driving pulley drives synchronous belt rotation, synchronous belt that two worm screws is driven to rotate simultaneously, final that two rollers is driven to rotate synchronously and release
Put hoist ropes.The distance of coiling length of the hoist ropes on roller needed for car layer drop is determined, in order to the greatest extent when rescue
It is shifted soon from car, as soon as therefore cage descending when is all the maximum release length to nearest layer, that is, hoist ropes
It is one layer of height.
In order to ensure that lift car leveling is smooth, the present embodiment is provided with flat bed limiting device 12, flat bed limit in cage bottom
Device is Telescopic rod structure, and when needing rescue, flat bed limiting device just stretches out, when cage descending, stretching it is flat
Layer limiting device is in contact with the limited block of 13 side of platform, and car stops to decline after contact, also illustrates that lift car leveling
In place.
Manual rescue device is set on fixed frame 22, and fixed frame is fixed on the top of sedan-chair 11.Fixed frame is in frame-shaped construction, frame shape
The position at angle be fixed with parallel long beam 23 and short beam 24, mounting bracket 25, roller, worm and gear are fixed on long beam and short beam
Transmission mechanism is both secured on mounting bracket.
Embodiment 2：A kind of elevator configured with safety return circuit detecting system and manual rescue device, not with embodiment 1
It is with place：Linkage is realized using interlocking bar 29 between two worm screws（Referring to Fig. 5）, at the worm gear of two Worm and worm-wheel gearings
In same plane, two worm screws are coaxially arranged, are connected by interlocking bar between two worm screws.Manual driving device include driving rope and with
The connected driving wheel 28 of worm screw, driving rope coordinate with driving wheel, and driving rope is extend into car.When needing rescue, by
Passenger operation in car, drawing driving rope, driving rope band move driving wheel rotation, and driving wheel drives two worm screws to rotate synchronously, most
Two rollers of driving rotate synchronously and discharge hoist ropes eventually.Remaining structure is with reference to embodiment 1.
Traction machine described in all embodiments described above is connect by main safety contactor contact with power supply；Safety return circuit is examined
Examining system（Referring to attached drawing 6）Including：Safety return circuit, including master switch, several limit switches and safety switch, power supply pass through peace
Full loop is connect with main safety contactor coil；Several switch detection modules, it is each switch detection module it is corresponding there are one
Master switch, limit switch or safety switch, the output end for switching detection module are communicated by safety bus with upper-level control system
Connection, the first test side for switching detection module are connect with the movable contact of master switch, limit switch or safety switch, switch detection
Second test side of module is connect with the stationary contact of master switch, limit switch or safety switch；Safety bus connects all switches
Detection module and upper-level control system；Upper-level control system, the output that all switch detection modules are received by safety bus are believed
Number.It includes checking judgment module, timesharing cycle energization module and controller to switch detection module, described to check the defeated of judgment module
Outlet is communicated to connect by safety bus and upper-level control system, the first test side of the inspections judgment module for master switch,
The high frequency output end of the movable contact of limit switch or safety switch connection checks that the second test side of judgment module is and always opens
It closes, the pile-up pulse test side of the stationary contact connection of limit switch or safety switch, checks the high-frequency signal input of judgment module
End is electrically connected with timesharing cycle energization module, and the control terminal of timesharing cycle energization module is electrically connected with the controller.The power supply is logical
The input terminal for crossing low-pass filter and safety return circuit connects, and the output end of safety return circuit passes through a low-pass filter and main safety
Contactor coil connects, each pile-up pulse test side for checking judgment module by a high-pass filter with it is corresponding always
The stationary contact connection of switch, limit switch or safety switch.
In all embodiments of the utility model, safety return circuit is similar with the safety return circuit of conventional elevator, is all to have several
Safety device, limiting device contacts of contactor switch and be that the master switch of button switch or other limit switches are constituted, this
Master switch, several limit switches and safety switch are referred to as according to the difference of function in utility model, this equipment exists
Relatively conventional in elevator device, for switch detection module itself due to included controller, the controller in embodiment can be single
Piece machine, so having address when being connect with safety bus, the switch detection module of the utility model can be selected
Element it is more, specific element is not limited in the utility model, it is only necessary to it is capable of providing detection and address function, this
Any intelligent chip may be used in field technology personnel, detection chip reaches the mesh that the utility model can be realized in corresponding function
, conventional elevator system establishing criteria is equipped with safety return circuit, i.e., is connected by several normally closed switch, control system active force
The power supply of element.When touching dangerous action triggers, corresponding switch just switches to off state, safety return circuit by closed state
It disconnects, contactor unclamps in circuit, and system active force element loses power supply, and system stops.Ensure personnel safety.But it is real
During the use of border, over time, during long-term through-flow, contact resistance gradually increases each switch, and safety is returned
Road respectively switchs partial pressure and gradually increases, and the voltage acted on the contactor of control dynamical element is gradually reduced.When pressure drop reaches one
When definite value, contactor will unclamp, and elevator mistakenly stop is caused to stop, and cause failure.Maintenance staff need after reaching scene numerous
It is larger that failed element difficulty is found out in switch, using switch detection module in the utility model, mainly utilizes its own address
Signal, when there is open circuit in safety return circuit directly according to the corresponding limit switch of address signal detection and safety switch, master switch,
Failed element can be quickly positioned for maintenance staff, quasi- failed element is replaced in time and provides basis for estimation.Upper-level control system
Itself the data such as the position of failed element can be provided, the component being easily damaged can also be recorded, be used for the dimension in later stage
Shield, even anticipation, early warning, can be completed by upper-level control system.
Each switch detection module information on safety bus is gradually asked in safety circuit detecting system a cycle.
Switching information in collected respectively corresponding safety return circuit is sent to upper-level control system by each switch detection module.At interval of
A period of time, just operation was primary.During system power transmission, circular flow detects program.When detection program is not limited to elevator operation,
It also needs to run when elevator device is standby.
Each switch detection module is independently-powered, has the function of bus in own coding.The switch that will can respectively measure
Closed state and the analog signals of reflection contact resistance pass through bus feedback to host computer.Externally there is input terminal in module test side
Mouth and output port.High-frequency impulse can occur for output port, and the pulse signal sent out is filled by individual safety chain switches
Feed back inbound port.Input port has the function of step-by-step counting and analog measurement.Therefore, it in the utility model, is examined to first
It surveys end and is named as high frequency output end, the second test side is named as pile-up pulse test side, as long as in fact, random devices can reach
To one end high frequency output, second end pile-up pulse detection, you can realize the technical solution of the application, therefore, the utility model pair
Element model itself does not limit.
There are two types of the working conditions of the present embodiment,
Switch disconnects：Because pulse test circuit can not constitute circuit, the high-frequency impulse that signal detection end output port is sent out
Input port can not detect, judge that on off state disconnects.Without accumulation, it is 0 to measure analog quantity for pulse.Pass through signal transmission passage
It is disconnected to host computer feedback switch signal, the analog quantity of accumulation is 0.
Switch is closed：The high-frequency impulse that signal detection end output port is sent out detects the pulse of same frequency in input port
Signal judges that on off state is closed.The analog quantity of pulse accumulation can reflect switch contact resistance sizes.It is steady in supply voltage
Fixed, in the case of same detection cycle, the analog quantity is smaller, illustrates that switch contact resistance is bigger, and pulse energy loss is more.It should
Analog quantity is bigger, illustrates that contact resistance is smaller, and pulse energy is lost smaller.
Embodiment 4：
In the present embodiment, it is also configured with several point of control system, each a point control system has been correspondingly connected with several and has opened
Close detection module, each divide the input terminal of control system and switch that detection module is direct-connected, divide the output end of control system with it is upper
Control system connects, and rest part is same as the previously described embodiments.
The above is only the preferred embodiment of the utility model, not imposed any restrictions to the utility model, every
According to the utility model technical spirit to any simple modification, change and equivalent transformation made by above example, still fall within
The protection domain of technical solutions of the utility model.
Claims (10)
1. a kind of elevator configured with safety return circuit detecting system and manual rescue device, which is characterized in that including：
Traction machine, as the power source of car lifting, the traction machine is connect by main safety contactor contact with power supply；
Traction sheave connect with traction machine and is driven by traction machine, and hoist ropes, traction wire saws car liter are arranged on traction sheave
Drop；
Worm gear mechanism, worm gear is coaxially connected with traction sheave and is rotated synchronously in company with traction sheave, and worm and wheel engagement is constituted
The lockable mechanism of traction sheave；
Lazy-tongs, be connected with worm screw for drive worm screw rotation keep it is synchronous with worm gear, when elevator runs well, worm screw and
Worm gear is separated always；
Manual rescue device, hoist ropes end is wound on it, makes car needing the hoist ropes releasably wound when rescue
Flat bed；
Safety return circuit detecting system includes：
Safety return circuit, including master switch, several limit switches and safety switch, power supply pass through safety return circuit and main safe contact
Device coil connects；
Several switch detection modules, each detection module that switchs are corresponded to there are one master switch, limit switch or safety switch,
The output end for switching detection module is communicated to connect by safety bus and upper-level control system, switchs the first detection of detection module
End is connect with the movable contact of master switch, limit switch or safety switch, switchs the second test side and master switch, the limit of detection module
The stationary contact of bit switch or safety switch connects；
Safety bus connects all switch detection modules and upper-level control system；
Upper-level control system receives the output signal of all switch detection modules by safety bus.
2. the elevator according to claim 1 configured with safety return circuit detecting system and manual rescue device, feature exist
In lazy-tongs use servo motor, and either worm screw is connected with traction machine or traction sheave using the purely mechanic kind of drive.
3. the elevator according to claim 1 or 2 configured with safety return circuit detecting system and manual rescue device, feature
It is, manual rescue device includes that locking system and the driving drum rotation of the roller and locking roller for winding hoist ropes are put
The manual driving device of loose hoist ropes.
4. a kind of elevator configured with safety return circuit detecting system and manual rescue device according to claim 3, special
Sign is that locking system uses Worm and worm-wheel gearing, roller to be connected with worm gear, and worm and wheel engages and keeps worm screw quiet
Locking is only formed, manual driving device drives worm screw rotation to realize unlock and driving drum rotation.
5. the elevator according to claim 4 configured with safety return circuit detecting system and manual rescue device, feature exist
In, manual driving device includes drive rod, the driving pulley being connected with drive rod, the synchronous belt of connecting worm and driving pulley,
Drive rod is extend into car.
6. the elevator according to claim 4 configured with safety return circuit detecting system and manual rescue device, feature exist
In manual driving device includes that driving is restricted, and the driving wheel being connected with worm screw, driving rope coordinates with driving wheel, and driving rope is extend into
In car.
7. the elevator according to claim 1 or 2 configured with safety return circuit detecting system and manual rescue device, feature
It is, hoist ropes is two groups, and roller is two and is corresponded in hoist ropes that each roller is all connected with a worm and gear and passes
Motivation structure is connected between the worm screw of two Worm and worm-wheel gearings by synchronous belt or is connected by interlocking bar.
8. the elevator according to claim 1 or 2 configured with safety return circuit detecting system and manual rescue device, feature
It is, traction machine, traction sheave, worm gear mechanism, lazy-tongs may be contained on mounting platform, and manual rescue device is set to
On fixed frame, fixed frame is fixed on car roof.
9. the elevator according to claim 1 or 2 configured with safety return circuit detecting system and manual rescue device, feature
It is, switch detection module includes checking judgment module, timesharing cycle energization module and controller, the inspection judgment module
Output end is communicated to connect by safety bus and upper-level control system, and the first test side of the inspection judgment module is and always opens
Close, the high frequency output end of the movable contact of limit switch or safety switch connection, check the second test side of judgment module be with it is total
The pile-up pulse test side of the stationary contact connection of switch, limit switch or safety switch, checks that the high-frequency signal of judgment module is defeated
Enter end to be electrically connected with timesharing cycle energization module, the control terminal of timesharing cycle energization module is electrically connected with the controller.
10. the elevator according to claim 1 or 2 configured with safety return circuit detecting system and manual rescue device, special
Sign is that the power supply is connected by the input terminal of low-pass filter and safety return circuit, and the output end of safety return circuit passes through one
Low-pass filter is connect with main safety contactor coil, each to check that the pile-up pulse test side of judgment module passes through a height
Bandpass filter is connected with the stationary contact of corresponding master switch, limit switch or safety switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965137 | 2017-10-17 | ||
| CN2017109651374 | 2017-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208054690U true CN208054690U (en) | 2018-11-06 |
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ID=63283437
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| CN201721701152.XU Expired - Fee Related CN207792401U (en) | 2017-10-17 | 2017-12-08 | A kind of two-shipper drag device |
| CN201711299460.9A Pending CN109665419A (en) | 2017-10-17 | 2017-12-08 | A kind of drag device with manual rescue device |
| CN201721701151.5U Expired - Fee Related CN207792432U (en) | 2017-10-17 | 2017-12-08 | A kind of drag device with manual rescue device |
| CN201711298667.4A Pending CN109665418A (en) | 2017-10-17 | 2017-12-08 | A kind of elevator traction mechanism |
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| CN201721836246.8U Expired - Fee Related CN208249599U (en) | 2017-10-17 | 2017-12-25 | Elevator traction mechanism with safety return circuit detection |
| CN201711425699.6A Active CN109665417B (en) | 2017-10-17 | 2017-12-25 | Four-door elevator car |
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| CN201721839486.3U Expired - Fee Related CN208037765U (en) | 2017-10-17 | 2017-12-25 | A kind of drag device with manual rescue mechanism |
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| CN201721845421.XU Expired - Fee Related CN208037781U (en) | 2017-10-17 | 2017-12-25 | The opposed drag device of elevator |
| CN201711425674.6A Pending CN109665422A (en) | 2017-10-17 | 2017-12-25 | Elevator configured with safety return circuit detection system and manual rescue device |
| CN201711425678.4A Pending CN109665403A (en) | 2017-10-17 | 2017-12-25 | A kind of concealed two-shipper drag device of counterweight |
| CN201711425682.0A Pending CN109665429A (en) | 2017-10-17 | 2017-12-25 | A kind of gate layer door system based on safety return circuit detection |
| CN201711424491.2A Pending CN109665421A (en) | 2017-10-17 | 2017-12-25 | Elevator traction mechanism with safety return circuit detection system |
| CN201711424564.8A Pending CN109665402A (en) | 2017-10-17 | 2017-12-25 | A kind of drag device with manual rescue mechanism |
| CN201721839786.1U Expired - Fee Related CN207827627U (en) | 2017-10-17 | 2017-12-25 | A kind of counterweight arrangement in elevator traction system |
| CN201711423217.3A Pending CN109665420A (en) | 2017-10-17 | 2017-12-25 | A kind of drag device with safety tongs |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665422A (en) * | 2017-10-17 | 2019-04-23 | 陕西小溪机电科技有限公司 | Elevator configured with safety return circuit detection system and manual rescue device |
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