CN2091325U - Two-self lock safety device for bridge type scaffold - Google Patents

Abstract

The utility model relates to a two-self-lock safety device for a bridge type scaffold, belonging to the technical field of the labor protection of the shelf for the outer decoration of the construction work. The safety device comprises two first vertical-hook-type self-lock devices and a secondary self-lock device adopting two bumper self-lock devices, which are arranged respectively at both ends of the cross bridge of a bridge frame. When a mode bridge moves up and down, the upright post can be locked automatically at any time after an inverse chain is broken suddenly, the two self-lock devices can be locked automatically and simultaneously, and a bumper can be reset automatically when the cross bridge is positioned. When the utility model is used, the existing bridge type shelf can be used fully, the large funds can be saved, and the safe and automatic protective action can be obtained simultaneously. The utility model has the advantages of safety assurance, high efficiency, easy fabrication and easy local materials.

Description

Two-self lock safety device for bridge type scaffold

The utility model belongs to the labour protection field of building operations exterior decoration with shelf, and exactly, it relates to used pair of self locking safety protector of bridge scaffold.

Existing bridge scaffold promotes or during landing, respectively uses the wire rope of a φ 12.5mm that cross-bridges is connected with column at the cross-bridges two ends at cross-bridges, as cross-bridges unexpected attached measures when falling takes place in lifting process with this.Make one of in this way shortcoming be because of wire rope can not do too short, when cross-bridges took place to fall suddenly, when falling apart from 50 centimetres, safety rope can work, bigger to crane span structure is tilted, the operator loses center of gravity easily and falls.Two of shortcoming is that 50 centimetres of every liftings will be fallen safety rope one time, greatly reduces efficiency.Three of shortcoming is operator's thought paralysis, does not use or incorrect use safety rope, because crane span structure does not have other security protection facility, the personnel that the cause accident that injures and deaths and crane span structure damage of falling occurs repeatedly.Wire rope is a kind of passive means of defence as measures, and the operation of security protection is not only cumbersome, also depend on simultaneously operator's sense of responsibility and to the attention degree of safety, thereby is science very not.It is when crane span structure rises to the precalculated position after that thick stick is inserted in the insurance of former bridge scaffold, needs the garden steel of φ 30mm, long 600mm inserted to shoulder practicablely after inserting can play safety effect.When continuing to rise cross-bridges or when falling cross-bridges slotting thick stick pulled out and could continue to rise or fall, it is very inconvenient to operate, and easy generation is slotting to be shouldered attachedly to fall and object strike accident.For the shortcoming that overcomes the security protection of above-mentioned lifting cross-bridges and adopt round steel to insert thick stick to rise to safety effect behind the precalculated position as crane span structure, aim to provide a kind of autofitting insurance of after cross-bridges rises to the precalculated position, accomplishing, at cross-bridges lifting dual fail-safe self-locking, special the utility model that proposes accomplished at any time in service.

The utility model is achieved in that at cross-bridges two ends, each settles the two self locking safety protectors of a cover, this kind device has the insurance self-locking of two roads, the first road self-locking device adopts upright hook-type self-locking device (two one covers), adopt φ 8mm reinforcing bar (8 in the accompanying drawing also claims connecting rod) to be connected inductility when stressed with the lifting rope cross bar with reinforced steel bar ring.When jack was prominent disconnected, it can in time pin the crane span structure column.Automatically open the hook-type self-locking device when crane span structure rises, the hook-type self-locking device was closed automatically when crane span structure put in place, and the cross-bridges lifting is not bumped and do not hung, and is easy to use.The second road self-locking device adopts two one covers of safety bumper self-locking device, and insurance is inserted and shouldered autofitting after cross-bridges rises to certain position.Cross-bridges insures slotting thick stick as continuing to rise to be separated automatically, need not manually plug and unplug to insure to insert and shoulder, and not overslaugh cross-bridges rises and moves.This bumper self-locking device can be accomplished the self-locking at any time of ascending, descending crossbearer.

The upright hook-type self-locking device in first road and the second road bumper self-locking device, can be when the cross-bridges ascending, descending the prominent disconnected self-locking column at any time of jack, two self-locking devices can be accomplished self-locking simultaneously, and can play to insure when cross-bridges locate and shoulder autofitting.Its maximum impact distance of falling accident is less than 180mm if cross-bridges meets accident.

Below in conjunction with drawings and Examples, further bright the utility model of lock.

Accompanying drawing is the assembly drawing of the two self locking safety safeties of bridge scaffold.1 is the lifting lifting rope among the figure, adopt the wire rope of φ 12.5mm, 2 is suspension ring, uses the A3 steel, φ 16mm, 3 is trapeze, adopt the A3 steel, 4 are the bridge link that falls, A3 φ 8mm, 5 is the bumper rocking handle, adopt A3, thick δ is 8mm, and 6 is the bumper axle sleeve, A3 φ 42.5mm, 7 is bumper, A3 φ 30mm, and 8 is connecting rod A3 φ 8mm, 9 is the bumper extension spring, 10 is hook-type self-locking device flap rocking handle, and A3 steel, thickness of slab σ are 8mm, 11 is hook-type self-locking device axle sleeve, A3 φ 42.5mm, 12 is hook-type self-locking device A3 φ 30mm, 13 is the extension spring of hook-type self-locking device, 14 is bumper shelves thick sticks, adopt A3 steel φ 25mm, 15 is the bumper rotating shaft, and 16 is the rotating shaft of hook-type self-locking device, its bottom bracket axle 6,11 each 2 be welded in the cross-bridges end respectively, 9 two its lower ends of extension spring are carried out activity with the cross-bridges end and are connected, and the upper end connects with bumper 7 one ends are movable, 14 2 ends that are welded in cross-bridges of shelves thick stick, 2 two on suspension ring and lifting rope 1, hang shoulder 3 and cross-bridges carry out activity and connect, lifting rope 1 is a lifting tool, the upper end is enclosed within on the suspension hook that pulls the case reed, axle sleeve 6 is passed in the rotating shaft 15 that insurance is shouldered, and its two end welds with bumper 7 and rocking handle 5 respectively.Axle sleeve 11 is passed in hook-type self-locking device rotating shaft 16, and its two end is pulled rocking handle 10 welding with hook-type self-locking device 12 and folding respectively.Trapeze 3 is entangled in connecting rod 8 upper ends, and the flap rocking handle is hooked in its lower end.Rocking handle 5 is entangled in bridge link 4 lower ends that fall.Extension spring 13 2 ends are hooked in respectively on two flap rocking handles 10.Rocking handle 5, bumper 7 all can 15 rotate around the shaft.Hook-type self-locking device 12 and flap rocking handle 10 also can 16 rotate around the shaft.

Existing accompanying drawings cross-bridges rises, and descends and locatees the operating principle of enforcement security protection three kinds of states under.

Cross-bridges rises: pulling Chain block (being professional term) rises lifting rope 1, suspension ring 2 drive hang shoulder 3 and cross-bridges rise simultaneously, hang and shoulder 3 drivening rods 8 and move simultaneously, this moment, flap rocking handle 10 rotated simultaneously laterally with hook-type self-locking device 12, extension spring 13 is extended stressed simultaneously, the hook-type self-locking device is separated with the crane span structure column, cross-bridges rises without hindrance, at this moment, the bridge link 4 that falls does not hang over to hang and shoulders on 3, when cross-bridges rises, (professional term) bumper 7 was forced to outwards rotate downwards when bumper was met the web member of crane span structure column, extension spring 9 elongations are stressed, and cross-bridges also is not obstructed when rising, when bumper 7 rises by crane span structure column web member with cross-bridges, original position is loosened back in extension spring 9, bumper 7 is resetted, lived for 14 grades by lever simultaneously, be in safety position.When jack breaks down when cross-bridges is fallen suddenly, hang and shoulder 3 constraints that it made progress this moment, because the effect of extension spring 9 and 13, bumper bar 7 and hook-type self-locking device 12 are rotated rapidly to crane span structure column one side simultaneously, instantaneous cross-bridges is pinned, suddenly fall when it is lockable from cross-bridges, cross-bridges falls apart from being 180mm to the maximum.As continuing the cross-bridges that rises, each part will repeat above-mentioned action.

Cross-bridges descends: identical when the operating principle of hook-type self-locking device rises bridge together, repeat no more.The bridge link 4 that needs this moment to fall hangs over to hang shoulders 3 two ends, hang this moment and shoulder the top that moves to suspension ring 2 on 3 power that are subjected to upwards; rocking handle 5 laterally rotates downwards with bumper 7 simultaneously; cross-bridges descends without hindrance; break down when cross-bridges is fallen suddenly; be identical when the instantaneous self-locking action of bumper 7 and hook-type self-locking device 12 rises bridge together, do not giving unnecessary details as jack.

Cross-bridges location: state is identical when rising bridge, gives the position, bonding part when cross-bridges rises to, and when bumper 7 is in safety position, can loosen Chain block, and trapeze 3 is in free state, and hook-type self-locking device 12 inwardly rotates under the effect of extension spring 13, locks.When cross-bridges drops to predetermined position, manually remove bridge link 4, bumper 7 inwardly rotates under the effect of extension spring 9, is the insurance state, can loosen Chain block, and is identical when each parts action is located with rising, and repeats no more.

Owing to use original wire rope method to have an accident time and again, this enterprise clearly notifies, there is the automatic protection device then to ban use of on the crane span structure, enforcement of the present utility model, guaranteed that the bridge-type frame can normally use, the existing a large amount of crane span structures of enterprise can be fully utilized, promptly saved economically and let funds lie idle, on producing, solved the security protection problem, promptly guaranteed personal safety, also alleviated working strength of workers, needing three process to be reduced to a procedure from original lifting or landing can finish.Can improve two times of man-hours, the utility model is drawn materials easily, except that extension spring, all can utilize building site tailing processing simple and easy, it is less to get material, and general unit in charge of construction all can get just on the spot and manufacture voluntarily, being that economy has practicality again, is the safety device of desirable science.

Claims (4)

1, a kind of pair of self locking safety protector is characterized in that at cross-bridges two ends, settles the two self-locking devices of a cover respectively, and wherein one self-locking device adopts two of upright hook-type self-locking devices, and the second road self-locking device adopts two of bumper self-locking devices.

2, a kind of pair of self locking safety protector according to claim 1, it is characterized in that described upright hook-type self-locking device and bumper self-locking device by suspension ring 2, hang shoulder 3, the bridge link 4 that falls, rocking handle 5, bumper axle sleeve 6, bumper 7, connecting rod 8, bumper extension spring 9, flap rocking handle 10, hook-type self-locking device axle sleeve 11, hook-type self-locking device 12, hook-type self-locking device extension spring 13, lever 14, bumper rotating shaft 15, hook-type self-locking device rotating shaft 16 form, wherein:

A, axle sleeve 6,11 each 2 be welded in the cross-bridges end respectively, 14 two ends that are welded in cross-bridges of shelves thick stick;

B, 9 two its lower ends of extension spring are carried out activity with the cross-bridges end and are connected, and the upper end connects with bumper 7 one ends are movable;

Axle sleeve 6 is passed in c, rotating shaft 15, and its two end shoulders 7 and rocking handle 5 welding with insurance respectively;

Axle sleeve 11 is passed in d, rotating shaft 16, and its two end welds with hook-type self-locking device 12 and flap rocking handle 10 respectively;

Trapeze 3 is entangled in e, connecting rod 8 upper ends, and flap rocking handle 10 is hooked in its lower end, and entangle on the rocking handle 5 bridge link 4 lower ends that fall;

F, extension spring 13 2 ends are hooked in respectively on two flap rocking handles 10.

3, a kind of pair of self locking safety protector according to claim 2 is characterized in that described rocking handle 5, and bumper 7 can 15 rotate around the shaft.

4, a kind of pair of self locking safety protector according to claim 2 is characterized in that described hook-type self-locking device 12 and flap rocking handle 10 can 16 rotate around the shaft.

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