A kind of gas backwash is slow to drop device for preventing elevator from falling and methodTechnical field
The present invention relates to elevator safety equipment technology fields, in particular to a kind of to realize that elevator is anti-by gas backwash modeThe device and method to fall.
Background technique
With the development of urban population centralization trend, skyscraper cumulative year after year in city, the use of elevator becomesEspecially extensively.Elevator safety is increasingly becoming the problem of people's growing interest, especially VTOL elevator, once breaking downThere is the danger fallen, passenger not only physically will receive serious life threat in elevator, but also still suffer from hugePsychological burden.
Currently, have numerous device for preventing elevator from falling to fall when preventing elevator faults, but these falling proof devices are alsoThere are many disadvantages and limitation.Such as 1: the shape of elevator fall arrest is realized using previous elevator governor and rope brakeFormula, disadvantage: when elevator needs the speed centainly to drop, limiter of speed can just work with rope device is held under the arm, fall thing in lowrise layerUsed during elevator falling is not can avoid in therefore.Such as 2: the shape of elevator fall arrest is realized using the motor-driven safeties such as previous electric control lock lockFormula, disadvantage: for elevator when unexpected have a power failure, electric control lock is easy failure under outage condition, not can guarantee used during elevator falling lockDead elevator prevents from dropping.There is also certain drawbacks for current device for preventing elevator from falling as a result, and anti-fall without other new elevatorsDropping control device is alternative.
Disadvantages mentioned above affect to a certain extent elevator using safe, in order to solve the above problem, this patent applicationCompressed gas sprays the principle that the reaction force to be formed realizes the slow drop of deceleration during elevator tenesmus, proposes a kind of gas backwashSlow drop device for preventing elevator from falling and method are, it can be achieved that elevator slows down slow drop protection elevator ride personnel's during failing tenesmusSecurity function.
Summary of the invention
The purpose of this patent is directed to the drawbacks of existing device for preventing elevator from falling, and it is anti-fall to provide a kind of slow drop elevator of gas backwashDropping control device and method.
In order to solve the above-mentioned technical problem used technical solution is this patent:
During elevator drops suddenly, tenesmus signal is transmitted to gas backwash injector, gas by falling velocity sensorInjector recoil according to the speed of used during elevator falling automatic adjustment gas spout size, the compressed gas of liquid gas storage column passes throughGas backwash injector controls to adjust, and the back flushing gas for spraying some strength is the deceleration of elevator that falls, and gas backwash injector is certainlyThe dynamic spout realization elevator that falls that adjusts remains a constant speed safe decrease speed, to elevator terrain clearance sensor test to elevator fromWhen ground certain distance, triggering gas backwash injector automatically adjusts jet size, increases injection gas intensity, subtracts for tenesmus elevatorSpeed, when elevator reaches ground location, deceleration of elevator to stopping, elevator terrain clearance sensor test to elevator ground clearanceWhen being zero, triggering gas backwash injector closes gas injection.
Patent provides a kind of slow drop device for preventing elevator from falling of gas backwash:
The dedicated unit is applied to the fall arrest under elevator emergency state comprising with lower component: elevator structure frame, speed of fallingSensor, elevator terrain clearance sensor are spent, liquid gas stores column, gas backwash injector；It is characterized in that speed biography of fallingSensor is mounted on elevator structure frame, and elevator terrain clearance sensor is mounted on elevator structure frame, liquid gas storageColumn is mounted under elevator structure framework bottom, and gas backwash injector is mounted below liquid gas storage column.
In the present apparatus, nontoxic liquid pressurized gas is laid in liquid gas storage column, it is gas that liquid gas, which stores column,Body recoil injector provides gas；Tenesmus signal is transmitted to gas backwash injector by the velocity sensor that falls, gas backwash injectionDevice can automatically adjust gas spout size according to the speed of used during elevator falling；Gas backwash injector automatic adjustment spout can realize pendantElevator is fallen to remain a constant speed safe decrease speed；When elevator terrain clearance sensor tests certain distance liftoff to elevator, touchingSignalling passes to gas backwash injector；Gas backwash injector is adjusted according to the altitude signal of elevator terrain clearance sensorIncrease injection gas intensity；Elevator terrain clearance sensor test to elevator ground clearance be zero when, triggering gas backwash injectionDevice closes gas injection.
This patent has the advantages that
1, a kind of slow drop device for preventing elevator from falling of gas backwash and method are provided, is provided newly for elevator anti-falling safe technologyMethod and new way.
2, the use of this device for preventing elevator from falling and method can effectively avoid the generation of elevator tenesmus accident, significantly mentionSecurity reliability in high elevator use process.
3, this patent facilitates the development and application that the following elevator puts free fall technique, has in elevator safety devices technical fieldHave wide practical use.
4, compact-sized, implementation is simply.
Detailed description of the invention:
The slow drop device for preventing elevator from falling scheme of installation of Fig. 1, gas backwash
In figure: 1 elevator structure frame, 2 fall velocity sensor, 3 elevator terrain clearance sensors, and 4 liquid gases store column, and 5Gas backwash injector
Specific embodiment:
1 pair of specific implementation of the patent scheme is illustrated with reference to the accompanying drawing.
Scheme is as follows: during elevator drops suddenly, it is anti-to be transmitted to gas by falling velocity sensor 2 tenesmus signalInjector 5 is rushed, gas backwash injector 5 automatically adjusts gas spout size, liquid gas storage according to the speed of used during elevator fallingThe compressed gas of column 4 is controlled to adjust by gas backwash injector 5, is sprayed the back flushing gas of some strength and is subtracted for the elevator that fallsSpeed, gas backwash injector 5 automatically adjusts the spout realization elevator that falls and remains a constant speed safe decrease speed, to the liftoff height of elevatorWhen degree sensor survey 3 tries certain distance liftoff to elevator, gas is sprayed in the triggering automatic adjustment spout of gas backwash injector 5, increaseBody intensity, for the deceleration of elevator that drops, when elevator reaches ground location, deceleration of elevator to stopping, elevator terrain clearance is sensedDevice 3 test to elevator ground clearance be zero when, triggering gas backwash injector 5 closing gas injection, it can be achieved that used during elevator falling mistakeThe function that journey deceleration is slowly landed.
The slow drop device for preventing elevator from falling of this gas backwash and method are conducive to avoid the generation of used during elevator falling accident, significantlyThe security reliability in elevator use process is improved, before this patent has a wide range of applications elevator safety devices technical fieldScape.