CN2136049Y

CN2136049Y - Safety anti-falling device for working high above ground

Info

Publication number: CN2136049Y
Application number: CN 92232572
Authority: CN
Inventors: 王启鉴
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-09
Filing date: 1992-09-09
Publication date: 1993-06-16
Anticipated expiration: 2002-09-09

Abstract

The utility model relates to a safety anti-falling device for the aerial work. The utility model is characterized in that a rope winding wheel is pivoted in a shell seat; a main rope is winded around the rope winding wheel; one side recess of the rope winding wheel is provided with a spring so that the rope winding wheel can automatically roll back, and the other side recess of the rope winding wheel is provided with an automatic locking mechanism which comprises a main ratchet wheel, a small buckling claw, an actuating ring, a linking ring seat and clamping blocks; in the automatic locking mechanism, the main ratchet wheel is fixed to the rope winding wheel, the small buckling claw is pivoted on the end surface of the ratchet wheel, and the actuating ring, the linking ring seat and the clamping blocks are pivoted on the shaft collar of the ratchet wheel; the linking ring seat is pivoted and sheathed on the external circumference of the actuating ring; the edges of the inner circumference of the actuating ring are provided with circular convex teeth; the clamping blocks are pivoted on the shell seat, and are opposite to the ratchet wheel. The utility model balances the requirements of sensitivity and fastness, and has the advantages of convenient operation and high safety.

Description

Safety anti-falling device for working high above ground

The relevant a kind of anti-fall device of the utility model, the staff that You Zhike offers in the operation aloft joins the anti-fall device of hanging use, injures and deaths are caused on the ground of can avoiding falling when it is slipped because of carelessness, and can be immediately with being hung on aerial staff and unloading, in order to carrying out rescue service because of falling.

At present such as the cleaning of the building of the building of high building, steelframe room, high building outward appearance, the high-rise working that whitewashes or the like, usually the staff is a precarious position of not having safe jube around being in, therefore in operation, fall if accidentally slip, all will cause the grievous injury on the health, the operation aloft of similar this kind, because of falling because of carelessness, so that cause the incident of injures and deaths, the time what is heard arranged! How to prevent the generation again of this type of tragic event, it is not enough depending the careful of operating personnel alone, and therefore the security at this kind high-rise working needs, and the exploitation anti-fall device is necessary.

Use suitable simple of anti-fall device in the operation aloft in early days, just the rope ends at a predetermined length installs a clasp respectively, the clasp of one end is hooked on the waistband of human body during use, the other end then is hooked near the firm fixture in operation place, just in case slipping because of carelessness, the operating personnel falls, then rope is held human body by this, and ground damages to avoid falling; But this simple and crude design only is adapted at the operation place and fixes, and the less occasion of scope of activities, if must just can't be suitable in a big way movable (as building building) in the operation.In addition, this device can make the staff who slips hang in the air, therefore must rapidly it be saved.But for this Abseiling device, staff's safety in hanging promptly to be succoured quite trouble again, usually all to employ two or three people, pull together from the operation place of the eminence staff's pull-up that will be suspended in mid air, this not only effort but also dangerous of people's work of rescuing is so the practicality of this Abseiling device is quite limited.

The anti-fall device of another improvement, mainly be in cylinder body, to be provided with resistance ring and blade wheel, the inwall of resistance ring is provided with two stoppers, the blade wheel is provided with four prominent arms, be provided with telescopic blade in the prominent arm, the front end of blade is the wedge-shape notch that can engage with the stopper of resistance ring, and volume rope dish is set in the protrusion rotating shaft of blade wheel, roller end is arranged with spring, and rotating shaft can be turned round automatically; So, rope can be tied up on staff's the body, when human body falls accidentally, can spur rope by gravity and quicken the moving blade wheel, utilize centrifugal force that blade is thrown away and fixing, reach anti-fall effect with stopper card knot.

Though the more above-mentioned rope practicality in the past of this design, but still have the shortcoming in the design, just: the effect of protruding out of blade does not have direction restricted, no matter be that forward or reverse all can protrude out and block with stopper, this can make when when rope is received in counter-rotating, also produce unnecessary fixing phenomenon, and the rope that can't contract automatically, therefore when receiving rope, the speed of rope is received in just necessary special control, make it slowly receive rope, inconvenient naturally so in the use; Moreover, its card ends structure and is made of the retractable blades in the protruding arm and two stoppers, when the staff falls the pulling rope, these prominent arms and blade just can fast rotational, and the blade that the high speed rotation is protruded out by centrifugal action, to clash into stopper fast, produce card and end the anti-effect of falling, the installing that adds blade is again more not have a long cantilever of rigidity in design, therefore behind bump several times, be easy to flexural deformation or breakdown, so that sensitivity is affected, and security is worrying naturally! In addition, this device can make the staff who slips hang in the air and must rapidly it be saved equally; But this device does not fall design owing to unloading, and it is inconvenient therefore to handle also suitable trouble.

So main purpose of the present utility model is to provide a kind of high-rise working safe anti-fall device, its more convenient in the use safety.

An of the present utility model purpose then is to be to provide a kind of high-rise working safe anti-fall device, and it is provided with in addition and unloads descending mechanism, and can in time the staff who is hung on eminence after falling be unloaded, in order to carrying out rescue service.

The purpose of this utility model reaches as follows:

The safe anti-fall device of a kind of high-rise working, it mainly comprises:

Shell block, its top is installed with shackle;

The volume cable pulley, free to rotate is hubbed in the middle of the above-mentioned shell block, and its both sides interannular sets firmly and is wound with a main rope, and its outer end is installed with clasp, and the end, axle center of its two side ring respectively is formed with alcove;

Furl spring, be located in the alcove of volume cable pulley one side, the one end is fixed, and his end is connected on the volume cable pulley; The utility model also includes

Automatically locked mechanism comprises: main ratchet, little button pawl, driving ring, interlock ring seat and clamping block etc.; Wherein, main ratchet is installed in other the side alcove of volume cable pulley, and little button pawl pivot is located on this main ratchet end face, convexes with drive pin on it; Described driving ring is to be hubbed on freely to rotate in certain angle on the axle collar of this main ratchet, is provided with backspring on it and between main ratchet, and offers driver slot, and the drive pin of little button pawl is to be contained in wherein; Described interlock ring seat activity pivot is placed on the periphery of driving ring, convexes with the pushing and pressing tank on it, and the side of this pushing and pressing tank is other to have protruded out and make the interlock ring seat can automatic rotating shell fragment, and the ring portion inner peripheral of this interlock ring seat is provided with annular double wedge; The corresponding main ratchet of clamping block and being hubbed on the described shell block, and be located in the pushing and pressing tank of described interlock ring seat.

By this, when the staff falls, because the pulling of acceleration of gravity volume cable pulley and main ratchet, driving wheel is produced relative rotation because of effect of inertia and main ratchet, be held on the double wedge of interlock ring seat to promote little button dog clutch, and allow the interlock ring seat rotate, push against tank again, just the push card clamp dog fastens on ratchet, will roll up cable pulley at last and pin fixing, the personnel that main rope in time will be fallen hold, and avoid the ground of falling.

The utility model can also include to unload and fall device, it mainly is at the indoor rolling wheel that is pivoted with of a shell, be installed with worm gear on the rolling wheel axle, bridle joint has worm screw on the worm gear, the axial region of worm screw stretches out and is provided with bull stick, and on rolling wheel, set firmly and be wound with one and unload and fall rope, unload the outer end that falls rope and set firmly clasp, be to link on the shackle of above-mentioned shell block during use, and top, shell chamber is installed with coupler body, so that suspension hook falls if the operating personnel slips because of carelessness on the firm fixture in operation place, and held when being suspended in the air by above-mentioned main rope, just can in time pull bull stick and rolling wheel be rotated discharge to unload and fall rope and the staff unloaded carry out rescue service.

The shell fragment end of the interlock ring seat of described automatic locked mechanism can be formed with retainer ring, and the mat pillar is fixedly arranged on the shell block, on the retainer ring and extend and to convex with elastic arm, and the end of described clamping block is hubbed on the pillar, and its terminal surface also holds on the elastic arm that is butted on described interlock ring seat.

Relevant the utility model is for reaching above-mentioned purpose, and technological means that is adopted and effect thereof are enumerated a preferred embodiment now and cooperated graphic being described as follows.

Graphic simple declaration:

Fig. 1 is the device schematic diagram of the utility model embodiment.

Fig. 2 is the cutaway view of 2 '-2 ' transversal among Fig. 1; The device situation that shows automatic locked mechanism.

Fig. 3 is the cutaway view of 3 '-3 ' transversal among Fig. 1; The device situation that shows the little button pawl of automatic locked mechanism.

Fig. 4 is the cutaway view of 4 '-4 ' transversal among Fig. 1; The interior arrangement situation that shows automatic locked mechanism.

Fig. 5 is the cutaway view of 5 '-5 ' transversal among Fig. 1; Show and unload the interior arrangement situation of falling device.

Fig. 6 is the organigram of the utility model embodiment set band.

Fig. 7 is the view of the utility model embodiment automatic locked mechanism when regular event.

Fig. 8 is the action schematic diagram of the automatic locked mechanism of the utility model embodiment.

See also Fig. 1,2: the anti-fall device of the utility model embodiment, mainly comprise shell block 1, volume cable pulley 2, furl spring 3, automatically locked mechanism 4, unload and fall device 5 and set band 6 etc.; Wherein,

Shell block 1 slightly is the inverted U body, and its top is installed with shackle 11, so that suspension hook is in unloading on the clasp 561 that falls device 5 bottoms, or on the firm fixture in operation place; Volume cable pulley 2 is located in the centre of inverted U shell block 1, and it is passed through pivot on shell block 1 both sides with main shaft 21, volume cable pulley 2 can be rotated freely on

shell block

1,22 of its two side rings form annular tank 23, tank 23 base ring faces offer a helical form guide channel 24, be wound in main rope 25 on the cable pulley 2 for guiding, and its end, two side rings, 22 axle center respectively forms an

alcove

26,27; The outer end of wherein main rope 25 is to be installed with clasp 251, can be located at for hook to be worn on staff's set band 6 on one's body (as Fig. 6).

Furl spring 3 and be spiral spring, be located in the volume cable pulley 2 one side alcoves 26, its inner is fixedly arranged on the main shaft 21, and end is connected on the volume cable pulley 21 in addition, can make volume cable pulley 2 automatic rewindings.

Please cooperate again and consult Fig. 2,3,4: locked mechanism 4 mainly comprises automatically: main ratchet 41, little button pawl 42, driving ring 43, interlock ring seat 44 and clamping block 45 etc.: wherein, main ratchet 41 is to set firmly (or integrally formed) in volume cable pulley 2 other side alcoves 27 (as Fig. 1); The pillar 421 that little button pawl 42 terminal mats are embedded on main ratchet 41 end faces is hubbed on the ratchet 2, its front end outside convexes with button portion 422, inboard both sides then respectively convex with drive pin 423, and the drive pin 423 on base is located in the action radian (as Fig. 1,3) to limit little button pawl 42 in the guide groove 411 on the main ratchet 41; Driving ring 43 is hubbed on the axle collar of main ratchet 41 and can freely rotates in certain angle, on it and 421 on pillar be provided with backspring 431, and offer driver slot 432, the drive pin 423 of little button pawl 42 is to be contained in wherein, when volume cable pulley 2 is pulled the acceleration rotation, can driving ring 43 and main ratchet 41 are produced relative rotation, and mat driver slot 432 promotion drive pins 423 drive the portion's of button 422 outer moving by the effect of inertia force; 44 activities of interlock ring seat are hubbed on the main shaft 21, its ring portion 441 pivot simultaneously is placed on the periphery of driving ring 43, its ring portion 441 outwards convexes with pushing and pressing tank 442, the side side of pushing and pressing tank 442 has also protruded out shell fragment 443, the shell fragment 443 terminal retainer rings 444 that form, and mat pillar 445 is fixedly arranged on the shell block 1, and interlock ring seat 44 can be turned round automatically; On the retainer ring 444 and extend and to convex with elastic arm 446, and ring portion 441 inner peripherals are provided with annular double wedge 447, when moving when the button portion 422 of little button pawl 42 is driven outside, can be held on this annular double wedge 447, and drive whole interlock ring seat 44 rotations; The end of clamping block 45 is to be hubbed on the above-mentioned pillar 445, and be located in the pushing and pressing tank 442 of interlock ring seat 44, the double wedge of the corresponding main ratchet 41 of its front end is formed with blocking protuberance 451, end holds on the elastic arm 446 that is butted on interlock ring seat 44, when interlock ring seat 44 is driven and is rotated, can push against tank 442 and come to move in the push card clamp dog 45, will roll up cable pulley 2 lockings on the main ratchet 41 and blocking protuberance 451 is embedded in admittedly.

Please consult Fig. 1 again, 5: unload and fall device 5, mainly be in shell chamber 51, to be pivoted with rolling wheel 52, be installed with worm gear 53 on the rolling wheel axle, bridle joint has worm screw 54 on the worm gear 53, the axial region of worm screw 54 stretches out and is provided with bull stick 55, and on rolling wheel 52, set firmly be wound with one unload fall the rope 56, unload the outer end that falls rope 56 and be installed with clasp 561, link during use on the shackle 11 of

aforementioned shell block

1, and 51 tops, shell chamber are installed with coupler body 511, so that suspension hook is on the firm fixture in operation place, therefore when slipping because of carelessness, the operation personnel fall, and held when suspending in mid air by above-mentioned main rope 25, just can in time pull bull stick 55 rolling wheel 52 is rotated and to discharge to unload and fall rope 56, so can easy rapidly staff unload and in time carry out rescue service slipping; Wherein, by the high speed reducing ratio of worm gear 53 with worm screw 54, and irreversible latching characteristics to transmission, unload and fall rope 56 when load-bearing, can't release rope automatically, therefore safe, and use more convenient.

See also Fig. 6: the utility model embodiment in the use, in order to reach more firm safety, and more do not hinder the action of staff's four limbs, so the particular design of set band 6 is arranged, but mainly be to be connected in binding shoulder belt 63 between pectoral girdle 61 and waistband 62 fronts and the back side, and the clasp of being located in the middle of pectoral girdle 61 back sides 64 is formed by the pectoral girdle 61 of adjustable length and make-up and waistband 61, two; During use, around restrainting in chest, 62 stoppers of waistband link shoulder belt 63 and wear at shoulder at waist with pectoral girdle 61, so, can be with firm the hitching of whole human body, the clasp 251 of main rope 25 is hooked on the clasp 64 just can at last; Because main rope 25 is to tie up to the human body back side, therefore carrying out that more can overslaugh work is lighter in the use.

Please consult Fig. 1,7 again: the utility model embodiment is when normal operating condition, because the staff works in the operation place and walks about, because of the speed slow (acceleration is also little) of walking about, so the driving ring 43 of locked mechanism 4 does not have enough inertia force automatically, promote the rotation that driving ring 43 is done with respect to main ratchet 41, therefore little button pawl 42 keeps the recessed shape attitude, make volume cable pulley 2, driving ring 43 do to rotate synchronously with little button pawl 42, and by the effect that furls spring 3, main rope 25 can walking about and do freely to stretch with the staff.

Please consult Fig. 1 again, 8: when the staff in operation, slip because of carelessness when falling by eminence, because acceleration of gravity acts on main rope 25 at once, therefore rolling up cable pulley 2 and main ratchet 41 all will be subjected to the effect of acceleration of gravity and quicken rotation, at this moment, driving ring 43 is because of the effect of inertia force, can't in time rotate in company with main ratchet 41, therefore can and 41 on main ratchet produce one and relatively rotate, make driver slot 432 promote drive pin 423 outer moving, and then little button pawl 42 is held on the double wedge 447 of interlock ring seat 44, and allow interlock ring seat 44 rotate, push against tank 442 again, just push card clamp dog 45 fastens on main ratchet 41, it is fixing to roll up cable pulley 2 pinnings at last, and then main rope 25 just can in time be held the personnel that fall, and avoid the ground of falling; At this moment, other staff is as long as rotate and to unload the bull stick 55 that falls device 5, makes to unload to fall rope 56 and slowly release, and then hung pinnacled staff by main rope 25 and just can in time be removed, so that carry out rescue service.

Through above explanation as can be known, the utlity model has the following advantage different from catching device in the past:

(1) action of automatic locking mechanism, directive restriction, forward is just had an effect, and can not lock during the counter-rotating rope closing, and is therefore more reasonable in the design, more convenient in the use.

(2) with the driving force of inertia masterpiece self-locking, and with the firmer clamping block of another structure, hold the main ratchet of gear to bear gravity, drives structure and load-carrying construction are separated, so can take into account the dual safety requirement of sensitivity and fastness.

(3) have and unload the design of falling device, safer in the use, convenient.

Take a broad view of above-mentionedly, anti-fall device provided by the utility model is unprecedented innovation in the like product really, and can reach the creation improvement purpose of expection.

Claims

1, the safe anti-fall device of a kind of high-rise working, it mainly comprises:

Shell block, its top is installed with shackle;

Furl spring, be located in the alcove of volume cable pulley one side, the one end is fixed, and his end is connected on the volume cable pulley; Of the present utility model being characterised in that: it also includes

2, by the safe anti-fall device of the described high-rise working of claim 1, it is characterized in that: it also includes to unload and falls device, mainly be at the indoor rolling wheel that is pivoted with of shell, be installed with worm gear on this rolling wheel axle, bridle joint has worm screw on the worm gear, the axial region of worm screw stretches out and is provided with bull stick, and on rolling wheel, set firmly and be wound with one and unload and fall rope, unload the outer end that falls rope and be installed with clasp, link on the shackle of above-mentioned shell block, and top, shell chamber is installed with coupler body, and suspension hook is on the firm fixture in operation place.

3, by claim 1 or the safe anti-fall device of 2 described high-rise workings, it is characterized in that: the shell fragment end of the interlock ring seat of described automatic locked mechanism is formed with retainer ring, and the mat pillar is fixedly arranged on the shell block, also extend on the retainer ring and convex with elastic arm, and the end of described clamping block is hubbed on the pillar, and its terminal surface also holds on the elastic arm that is butted on described interlock ring seat.