A kind of elevator anti-fall device and using method thereof
Technical field
The present invention relates to elevator field, be specifically related to a kind of elevator anti-fall device and using method thereof.
Background technology
Elevator is a kind of vertical conveyor that electrical motor is power of take, case shape gondola is housed, for tier building, take advantage of people or carrying goods, it is comprised of hoistway, car, layer door, actuating unit, control housing etc., wherein control housing, for receiving, processing and transmitted signal, is controlled the shut down condition of whole elevator.China is that elevator is used big country, every every year with the speed increment of tens thousand of, but the rate of increase of service personnel cannot meet the growth rate of elevator, thereby many elevators exist safety failure hidden danger.Elevator faults is mainly manifested in the following aspects: 1. electric safety device is malfunctioning; 2. lock torque is not enough; 3. traction is not enough; 4. velocity limiter is malfunctioning; 5. safety tongs is malfunctioning.
Some above-mentioned failure problems easily causes the fast-descending that elevator is in operation, and serious appearance, directly from aerial Crater face, causes fatal harm can to the personnel in elevator cage.
And because elevator is at the operation failure condition that happens occasionally, when maintenance, maintainer has the risk of falling or elevator door to be opened because of fault cause (lift car not at flat bed time) under abnormal condition while keeping in repair at elevator hoistways top, personnel have the danger being strayed into, and can work the mischief to maintainer's safety like this.
Summary of the invention
The object of the invention is to overcome the above problem that prior art exists, a kind of elevator anti-fall device and using method thereof are provided, safety performance of the present invention is high, and long service life can play a protective role in the very first time.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of elevator anti-fall device, comprise some protection mechanisms, described some protection mechanisms are upwards evenly arranged on the inwall of hoistway successively from bottom layer door, described protection mechanism is by anti-fall gauze pad, blocking device, limiting platform and two inductive probes connect to form, the rebasing portion of described anti-drop net is connected with fixed mount axle, between the rebasing portion of described anti-drop net and fixed mount, be also provided with powerful torsion spring, described fixed mount is fixedly connected with hoistway, described anti-fall gauze pad top is connected with blocking device, described anti-fall gauze pad top is also provided with two inductive probes, two described inductive probes set gradually along the vertical direction of the inwall of hoistway, described limiting platform is fixed on hoistway inwall, and be positioned at same level with fixed mount, described blocking device is all connected with control housing with two inductive probes.
Further, described limiting platform top is provided with safety return circuit switch, and described safety return circuit switch is connected with control housing.
Further, described blocking device is connected to form by magnet coil, iron staff, stay hook, described magnet coil is set on iron staff, described iron staff one end is connected with stay hook middle part axle, described stay hook one end is connected with the inwall axle of hoistway, the other end is provided with hooked projection, and described hooked projection and anti-fall gauze pad top card connect.
Further, the distance between described two adjacent protection mechanisms is less than the height of three layer doors.
Further, described anti-fall gauze pad is comprised of some extension springs, housing and spring mattress, and described spring mattress surrounding is all connected with the inner side of housing by extension spring.
Further, between two described inductive probes, distance is less than 500 millimeters.
A using method for elevator anti-fall device, comprises the following steps:
Step 1) collect data, whether two inductive probes in each protection mechanism gather place floor has object to pass through, when have object to pass through to send the position of place floor and object by time velocity information to control housing, the data of place floor position when control housing receives in real time information that inductive probe sends and car and moves;
Step 2) Data Comparison, when inductive probe sends information to control housing, the floor information that control housing sends this inductive probe and object by time velocity information extract, and the utmost dispatch when information of car place floor position and car operation contrasts while sending information to control housing with inductive probe;
Step 3) judged result, when car place floor position consistent with inductive probe place floor position, and the object that inductive probe collects by time speed be less than or equal to the car utmost dispatch in when operation, return to step 1, inconsistent or be greater than the car utmost dispatch in when operation, control housing is controlled blocking device and is opened anti-fall gauze pad, and stops the operation of whole elevator, completes protection.
The invention has the beneficial effects as follows:
1, the present invention protects object to fall by some protection mechanisms, and the equipment in protection mechanism can be close to hoistway design, and floor area is little, does not affect elevator running space;
2, the distance between two adjacent protection mechanisms is less than the height of three layer doors, be beneficial to like this after trigger protection, can the very first time play protection to dropped object, minimizing is because distance is long, lapse rate is accelerated and is produced excessive antagonistic force, falling object is caused to secondary injury, improve safety;
3, anti-fall gauze pad is comprised of some extension springs, housing and spring mattress, has good buffer capacity, reduces the injury while falling.
4, protection mechanism be take mechanical power as main, and failure rate is low increases safety.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification sheets, below with preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, to the accompanying drawing of required use in embodiment technical description be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is integral structure schematic diagram of the present invention;
Fig. 2 is the structural representation of blocking device of the present invention;
Fig. 3 is the structural representation of the powerful torsion spring part of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Shown in Fig. 3, a kind of elevator anti-fall device, comprise some protection mechanisms 1, some protection mechanisms are upwards evenly arranged on the inwall of hoistway 2 successively from bottom layer door, protection mechanism is by anti-fall gauze pad 3, blocking device 4, limiting platform 5 and two inductive probes 6 connect to form, the rebasing portion of anti-drop net is connected with fixed mount 7 axles, between the rebasing portion of anti-drop net and fixed mount, be also provided with powerful torsion spring 8, powerful torsion spring can mechanically eject anti-fall gauze pad in the very first time, safe and reliable, fixed mount is fixedly connected with hoistway, anti-fall gauze pad top is connected with blocking device, anti-fall gauze pad top is also provided with two inductive probes, two inductive probes set gradually along the vertical direction of the inwall of hoistway, and between two inductive probes, distance is less than 500 millimeters, (inductive probe can be set to more than 2 herein, respond to more accurate, and inductive probe can be knotmeter) guarantee to measure object speed within the shortest time, accelerate the speed of response of fail-safe structure, improve safety performance, limiting platform is fixed on hoistway inwall, and be positioned at same level with fixed mount, blocking device is all connected with control housing 9 with two inductive probes.
Wherein, limiting platform, for when anti-fall gauze pad is opened, plays fixation, and its top is provided with safety return circuit switch 10, and safety return circuit switch is connected with control housing, and for the normal operation of elevator, when safety return circuit switch triggering, elevator is out of service immediately.
State blocking device by magnet coil, iron staff, stay hook connects to form, magnet coil is set on iron staff, iron staff one end is connected with stay hook middle part axle, stay hook one end is connected with the inwall axle of hoistway, the other end is provided with hooked projection, hooked projection and anti-fall gauze pad top card connect, during magnet coil energising, iron staff upward movement, and carrying stay hook and doing together upward movement, and the hooked projection of stay hook and anti-fall gauze pad depart from, complete release, during magnet coil no power, by deadweight iron staff and stay hook, fall back to initial position, and anti-fall gauze pad can be pushed to hooked projection place, realize and resetting, simple to operate, convenient.
Distance between two adjacent protection mechanisms is less than the height of three layer doors, after being beneficial to object and falling, can be protected in the very first time, and the long tenesmus distance that causes of distance becomes large, gravity accelerates to increase, while causing personnel or car to obtain protecting, antagonistic force is excessive, causes secondary injury.
Anti-fall gauze pad is comprised of some extension springs, housing and spring mattress, and spring mattress surrounding is all connected with the inner side of housing by extension spring, increases the buffer capacity of anti-fall gauze pad, greatly improves safety performance, reduces the injury to falling object.
A using method for elevator anti-fall device, comprises the following steps:
Step 1) collect data, whether two inductive probes in each protection mechanism gather place floor has object to pass through, without object, pass through to continue to gather, have object pass through to send the position of place floor and object by time velocity information to control housing, the data of place floor position when control housing receives in real time information that inductive probe sends and car 11 and moves;
Step 2) Data Comparison, when inductive probe sends information to control housing, the floor information that control housing sends this inductive probe and object by time velocity information extract, and the utmost dispatch (this velocity amplitude is all basic specification values of elevator, without gathering) when the information of car place floor position and car operation contrasts while sending information to control housing with inductive probe;
Step 3) judged result, when car place floor position consistent with inductive probe place floor position, and the object that inductive probe collects by time speed be less than or equal to the car utmost dispatch in when operation, return to step 1, inconsistent or be greater than the car utmost dispatch in when operation, control housing is controlled blocking device and is opened anti-fall gauze pad, and stops the operation of whole elevator, completes protection.
Wherein judged result illustrates by two particular cases: situation 1: when maintainer accidentally falls when keeping in repair, during whereabouts, the nearest inductive probe in below sense object by and the personnel that the collect speed of falling, by feeding back to control housing, control housing judges that floor position and the car position of inductive probe are inconsistent herein, magnet coil energising to blocking device at once, anti-fall gauze pad is opened personnel is caught, and trigger safety return circuit switch, make elevator out of service, avoid cage operation, personnel are damaged.
Situation 2: when car is because fault causes tenesmus, during tenesmus, the nearest inductive probe in below sense object by and collect the speed that car falls, by feeding back to control housing, control housing judges that the floor position of inductive probe is consistent with car position herein, but the utmost dispatch of running velocity while surpassing car operation, magnet coil energising to blocking device at once, anti-fall gauze pad is opened and is caught car, and triggers safety return circuit switch, makes elevator out of service.
Because the present invention is evenly provided with some protection mechanisms in hoistway, can play a protective role in the very first time, and injury be dropped to minimum, increase the safety of elevator.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.