CN103159108A

CN103159108A - Active type falling protector

Info

Publication number: CN103159108A
Application number: CN2011104270735A
Authority: CN
Inventors: 刘姚成
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-13
Filing date: 2011-12-13
Publication date: 2013-06-19

Abstract

The invention relates to a safe falling protector of elevators or construction lifters. An active type falling protector is characterized in that an electromagnet coil 9 of the falling protector is connected with a hoisting motor in parallel, when the elevators or the construction lifters are in a static state, a rack 5 of the falling protector drives small gears 4 under the effect of a reset spring 14, the small gears 4 drive eccentric clamping wheels 3 to clamp guide rails 15, and at the moment, the guide rails 15 are tightly clamped by the falling protector. Only after the hoisting motor is power on and started, the electromagnet coil 9 can act and pulls an armature 10, the armature 10 drives a pull bar 7 which pulls the rack 5, the rack 5 drives the two small gears 4 drive the two eccentric clamping wheels 3, the two eccentric clamping wheels 3 are in reversed rotation, so that the clamping wheels 3 are in an opened state, and the elevators or the construction lifters can freely operate up and down. When the elevators or the construction lifters operate in an overloaded mode, people in the elevators or the construction lifters can shut down a power source of a master starting contactor through a button, so that the electromagnet coil 9 of the falling protector is enabled to loss power, the rack 5 enables the eccentric clamping wheels 3 to tightly clamp the guide rails 15 under the effect of the spring 14, and accordingly an active falling protecting effect is achieved, and occurrence of major accidents of casualties is avoided.

Description

Active falling protector

Affiliated technical field

The present invention relates to the safety anti-falling device of a kind of elevator or building hoist.

Background technology

At present China and world other countries are at elevator or the anti-fall device of installing and using on the building hoist of counterweight is arranged is all the anti-fall device of passive type.This anti-fall device only after the disconnected rope of elevator or elevator, reaches free-fall velocity, and anti-fall device just can be opened, and allowing elevator or elevator be stuck on guide rail not can the Crater face, thereby reaches anti-fall purpose.This device has been continued to use large improvement decades always, and the accident of annual elevator or elevator falls is all in continuous increase, anti-fall device originally can not adapt to present equipment operating needs, shortcoming has as follows: the one, and anti-fall device originally is high to environmental requirement and maintenance requirement, need to clean frequently lubricated, even otherwise lapse rate has reached the free-fall velocity anti-fall device does not also open; The 2nd, anti-fall device originally is all passive type, only has seeing and fall helplessly in case elevator or elevator fall, and has just left it to chance; The 3rd, almost not fall because of disconnected rope in present falling accident, the reason of falling is all to fall because of overload.All to cause serious accident because overload is fallen in the statistics of the safety supervision department of recent years and the accident of media report, as Dalian, a lot of elevators occuring once falls from high level, as elevator generation falling accident of Dongguan City on September 9 this year, cause interior 20 people of ladder injured, 12 people's fracture; Carry 10 people from 10th floors chamber one decks etc. under Crater rapidly as the elevator at Haikou.The wait Death's that inside people can only be helplessly when overload occuring fall arrival has no other way, so anti-drop function is not all passive anti-drop function in other words because present anti-fall device does not possess overload.

Summary of the invention

The present invention is in order to overcome the shortcoming of above-mentioned anti-fall device, active anti-fall device of new generation is provided, this device can remove manual control by button after overload or disconnected rope occur, thereby can avoid the overload of elevator or the elevator the sort of accident generation of leaving it to chance of falling fully.

The present invention solves the problems of the technologies described above the technical scheme that adopts: the magnet spool of this active anti-fall device and bridge motor power supply are in parallel, at elevator or elevator during in quiescence, the tooth bar of falling protector makes the eccentric card wheel block guide rail under the effect of retracing spring, several-fold load-carrying elevator or elevator can not fall down yet even overload this moment, because the project organization of eccentric card wheel is to block tighter and tighter.

Only have after bridge motor gets electric startup, electromagnet could move, and pulls armature, take turns by driving pull bar, tooth bar and two miniature gearss, eccentric cards, two eccentric card wheels are done counter-rotation, so the card wheel just in opened condition, elevator or elevator move freely up and down.

When the operation of elevator or lifter excess load and warning device when not reporting to the police, if at this moment elevator or one running of elevator bridge motor, the traction sheave that towing machine will occur skids or brake failure, elevator or elevator will glide rapidly, the speed that glides can be more and more faster, approach to free-fall velocity, but the speed of out of reach free-falling body forever, at this moment all operations are all inoperative.Total be exactly the present invention can cut off by the button of elevator or elevator the inside in this state starting contactor artificial initiatively allow it stop, thereby play initiatively anti-fall effect, avoid the generation of great personnel casualty accidents.

Description of drawings

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 is structural representation of the present invention

Fig. 2 is eccentric card wheel side schematic diagram

In figure 1, the falling protector base, 2, the eccentric card wheel shaft, 3, the eccentric card wheel, 4, miniature gears, 5, tooth bar, 6, track adjusting wheel, 7, armature pull bar, 8, the electromagnet fixed link, 9, magnet coil, 10, armature, 11, eccentric card wheel standing screw, the gear on 12 eccentric cards wheels, 13, the interlock tooth line of eccentric card wheel, 14, retracing spring, 15, guide rail.

The specific embodiment

Below in conjunction with accompanying drawing, active falling protector of the present invention is described further.

structural representation with reference to Fig. 1: in figure, magnet spool 9 and bridge motor power supply are in parallel, at elevator or elevator during in quiescence, the tooth bar 5 of falling protector drives miniature gears 4 under the effect of retracing spring 14, miniature gears 4 drives again eccentric card wheel 3 and blocks guide rail 15, the state of this moment is in the situation that bridge motor must not the electricity anti-fall device be card labor guide rail, only have after bridge motor gets electric startup, electromagnet 9 could move, pull armature 10, armature 10 drives pull bar 7, pull bar 7 pulls tooth bar 5, tooth bar 5 drives two miniature gearss 4, two miniature gearss 4 drive two eccentric card wheels 3, two eccentric card wheels 3 are done counter-rotation, so the card wheel just in opened condition, elevator or elevator move freely up and down, when elevator or lifter excess load operation, people inside elevator or elevator can cut off by button the power supply of total starting contactor, make falling protector magnet coil 9 dead electricity, tooth bar 5 make again under the effect of retracing spring 14 eccentric card wheel tightly block guide rail, thereby play initiatively anti-fall effect, avoid the generation of great personnel casualty accidents.

Claims

1. the safety anti-falling device of an elevator or building hoist, it is characterized in that: the magnet coil 9 of falling protector and bridge motor power supply are in parallel, at elevator or elevator during in quiescence, the tooth bar 5 of falling protector drives miniature gears 4 under the effect of retracing spring 14, miniature gears 4 drives again eccentric card wheel 3 and blocks guide rail 15, the state of this moment in the situation that bridge motor must not the electricity anti-fall device also must not electricity and card labor guide rail, after bridge motor gets electric startup, electromagnet 9 could move, pull armature 10, armature 10 drives pull bar 7, pull bar 7 pulls tooth bar 5, tooth bar 5 drives two miniature gearss 4, two miniature gearss 4 drive two eccentric card wheels 3, two eccentric card wheels 3 are done counter-rotation, so the card wheel just in opened condition, elevator or elevator move freely up and down, when elevator or lifter excess load operation, people inside elevator or elevator can cut off by button the power supply of total starting contactor, make falling protector magnet coil 9 dead electricity, tooth bar 5 drive under the effect of spring two miniature gearss make eccentric card wheel tightly block guide rail 15, thereby play initiatively anti-fall effect.

2. active falling protector according to claim 1 is characterized in that: only just synchronous electric startup when bridge motor starts of magnet coil 9.

3. active falling protector according to claim 1 is characterized in that: the startup of total starting contactor and stop at elevator or the elevator the inside can be controlled for going by the button people.