CN2366483Y

CN2366483Y - Device for preventing workmen from being dropped off scaffold

Info

Publication number: CN2366483Y
Application number: CN 97215658
Authority: CN
Inventors: 石连祥
Original assignee: Industrial Co Of Second Construction Engineering Co Of China Construction Sixth Engineering Bureau
Current assignee: Industrial Co Of Second Construction Engineering Co Of China Construction Sixth Engineering Bureau
Priority date: 1997-05-13
Filing date: 1997-05-13
Publication date: 2000-03-01
Anticipated expiration: 2007-05-13

Abstract

The utility model relates to a safe device for preventing scaffolds from falling during the construction of high-layer and super high-layer buildings in a reinforced concrete structure. The utility model is composed of a support body, a trigger mechanism, a locking mechanism and an interlocking mechanism, but the utility model is formed by a flywheel centrifugal trigger mechanism via a ratchet pawl interlocking mechanism and a control eccentric locking mechanism. The utility model has the advantages of simple structure, flexible action, big clamping force, good anti-falling effect and ideal service performance; the use number of falling preventers is few; in general, only six falling preventers need to be installed on a building, and the accident that the scaffolds fall does not occur. More importantly, the utility model is especially suitable for users to elevate the scaffolds in a segmented way and lift the scaffolds manually, and the utility model has good economical efficiency.

Description

Fall-proof device for scaffold

The utility model relates to high level, the super high rise building of reinforced cement concrete structure, a kind of safety device in order to prevent that scaffold from falling in the construction.

In the high level of reinforced cement concrete structure, construction of super highrise building, adhering lifting formula scaffold is widely used, and has good effect.But distinct issues are how to prevent effectively that lifting false work from use falling, and this is a present important topic, because of normal in the construction serious accident that lifting false work falls take place.The anti-drop device that on integral electric lifting scaffold, uses, on control mode, the degree of tightness of useful boom hoist cable is controlled the structure of its braking, or the forms such as wedge-type structure of joining hole and structure at regular intervals or trigger with electromagnetic induction on guide rail with Electromagnetic bolt; Constitute upward from function, all mainly constitute by supporting mass, trigger mechanism, retaining mechanism and several major parts of interlock controlling organization, trigger mechanism is by interlock controlling organization transmission locking mechanism action, they by different control modes, be installed in different position and realize anti-fall, usually all anti-fall and lifting means need be installed at each suspension centre, generally, a building needs 20～30 suspension centres.The deficiencies in the prior art part mainly is: the one, and complex structure, consumption is big, and functional performance is not ideal enough; The more important thing is that they are unsuitable for the segmentation lifting, the hand hoisting scaffold uses.

The purpose of this utility model is to avoid weak point of the prior art, and a kind of be suitable for segmentation lifting, hand hoisting are provided, and the good Fall-proof device for scaffold product of functional performance.

Can take following technical scheme to realize purpose.Fall-proof device for scaffold, still by supporting mass, several parts of trigger mechanism, retaining mechanism and link gear constitute, but it is by the centrifugal trigger mechanism of flywheel, by the device of ratchet link gear, control Camlock mechanism formation.

The relative prior art of the technical program has following advantage and effect:

Simple in structure, be active in one's movements, clamping force is big, and is anti-fall effective, and functional performance is comparatively desirable; Consumption is few, and is general, and a building only needs 6 catching devices promptly to meet the demands; Can the more important thing is, be particularly suitable for segmentation lifting, the use of hand hoisting scaffold, good economy performance.

In conjunction with the accompanying drawings, embodiment is described in further detail the content of the technical program.

Fig. 1 is a kind of structural representation of Fall-proof device for scaffold;

Fig. 2 is the A--A sectional view of Fig. 1;

Fig. 3, the 4th, concerns schematic diagram at the structure of the centrifugal trigger mechanism of flywheel;

Fig. 5 is installation, the user mode schematic diagram of Fall-proof device for scaffold.

It is installed in the scaffold on static sliding support top or the corresponding position of other similar device, and guide rail or elevating movement part are contacted with the flywheel of trigger mechanism.During the guide rail operation, the band flywheel is done corresponding uniform rotation campaign, and the centrifugal trigger mechanism of flywheel is inoperative, normal operation, work; Any position, whenever as long as the velocity of rotation of flywheel accelerates, or promotes guide wheel and speeds up, and the centrifugal trigger mechanism of flywheel plays a role immediately, by the ratchet link gear, just can control the Camlock mechanism action, brake, and guarantees safety.Owing to utilize centrifugal action realize to trigger, cooperate ratchet, eccentric wedging again, highly sensitive, after lifting thing weightlessness, only needed to trigger in 0.05 second, and coupling mechanism force is big, pressure is big more, lock tight more, firm more.

Under the prerequisite that satisfies the said structure requirement, as for the integral body of Fall-proof device for scaffold, specific constructive form, the size that each funtion part reaches zero member, the connection between member, position relation etc. all can be according to using needs, take the circumstances into consideration to set, they can both guarantee the functional performance of Fall-proof device for scaffold.

Among the Fall-proof device for scaffold embodiment shown in the drawings:

The centrifugal trigger mechanism of flywheel mainly is made of flywheel 8, centrifugal 17 and control panel 10, on each axis of rotation 18 that centrifugal is installed in the flywheel end face movingly, control panel is provided with and centrifugal corresponding bearing pin 19, and flywheel, control panel is coaxial is installed in the flywheel rotating shaft; The ratchet link gear mainly is made of pull bar 7 and ratchet 5, extension spring 13, the lever-like ratchet is installed in the corresponding position of supporting mass 1 between Camlock mechanism and the centrifugal trigger mechanism of flywheel, with rotating shaft 6, the upper end of pull bar is connected with the ratchet front end, the lower end is connected with location-plate bearing pin 19, and the upper end of extension spring is connected with the rear end of ratchet, the lower end is connected with supporting mass; Camlock mechanism mainly is made of the eccentric wheel and the rotating shaft thereof of torsion spring, band handle, the eccentric wheel rotating shaft is fixedlyed connected with supporting mass, be enclosed within that torsion spring 20 1 ends in the eccentric wheel rotating shaft are connected with eccentric wheel, the other end is connected with supporting mass, the sour jujube groove on the eccentric wheel is connected with ratchet; Supporting mass 1 is provided with and corresponding guide positioning plate 15 of climbing frame guide rail and adjustment backing plate 16 structures in other side.Be provided with the friction race with guide rail contact position flywheel 8,, strengthen frictional force to increase contact area.When guide rail and flywheel move with normal speed, centrifugal 18 under the deadweight effect, free-falling, can not touch the bearing pin 19 on the control panel, control panel is failure to actuate, is remained stationary; If the lifting thing is out of control, the whereabouts, the velocity of rotation moment quickening of flywheel, in the flywheel centrifugal under action of centrifugal force, lose the free-falling state and displacement, it just in time can be stirred bearing pin 19 on the control panel, rotate together by bearing pin band control panel 10, promptly trigger mechanism is triggered; Control panel moves downwards by bearing pin band pull bar 7, and lever-like ratchet 5 overcomes the pulling force of extension spring 13,6 rotates around the shaft under the effect of pull bar, and ratchet separates with eccentric wheel, and link gear is finished the control action to retaining mechanism; Ratchet withdraws from from the sour jujube groove of eccentric wheel 2, and eccentric wheel rotates to the locking direction under the effect of torsion spring 20, with the guide rail that moves downward tightly pin, wedge is dead, stops scaffold to continue to glide, fall.Control panel only need turn over a few degrees, and pull bar 7 moves immediately, can establish alignment pin 11 on supporting mass, and the bottom of control panel is provided with corresponding limited block, realizes spacing.Can make broached-tooth design at eccentric corresponding site, and carry out selective hardening and handle, improve hardness, strengthen the interlock braking action.Each handle is in order to reset; Members such as guide positioning plate 15 on the supporting mass and adjustment backing plate 16 make the action of retaining mechanism more effective in order to install, to adjust.

For the work that makes catching device safer, reliable, strengthen the contact force between flywheel and guide rail, under certain precompression, work, Fall-proof device for scaffold, be installed in the centrifugal trigger mechanism of flywheel on the pressing device that constitutes by support 9, carrier base 21 and stage clip 12 with the flywheel rotating shaft, the carrier base hinged with support is fixedly mounted on the supporting mass, and stage clip is contained between the end in addition and supporting mass of support bottom lever.

The combination property of accompanying drawing illustrated embodiment, result of use are good.

The technical program, be applicable to that liftable work high above the ground has the various facility of shaped steel guide rail, round guide, channel-section steel, square steel, i iron guide rail all can, as lifting false work, portal frame or every by certain vertical lift track walking, and need prevent the unexpected plant that falls out of control etc.

Claims

1, a kind of Fall-proof device for scaffold is made of supporting mass, trigger mechanism, retaining mechanism and link gear, it is characterized in that, it is by the centrifugal trigger mechanism of flywheel, by the device of ratchet link gear, control Camlock mechanism formation; The centrifugal trigger mechanism of flywheel mainly is made of flywheel, centrifugal and control panel, and on each axis of rotation that centrifugal is installed in the flywheel end face movingly, control panel is provided with and centrifugal corresponding bearing pin, and flywheel, control panel is coaxial is installed in the flywheel rotating shaft; The ratchet link gear mainly is made of pull bar, ratchet and extension spring, the lever-like ratchet is installed in the corresponding position of supporting mass between Camlock mechanism and the centrifugal trigger mechanism of flywheel, with rotating shaft, the upper end of pull bar is connected with the ratchet front end, the lower end is connected with the location-plate bearing pin, the upper end of extension spring is connected with the rear end of ratchet, the lower end with directly hold body and be connected; Camlock mechanism mainly is made of the eccentric wheel and the rotating shaft thereof of torsion spring, band handle, the eccentric wheel rotating shaft is fixedlyed connected with supporting mass, be enclosed within that torsion spring one end in the eccentric wheel rotating shaft is connected with eccentric wheel, the other end is connected with supporting mass, the sour jujube groove on the eccentric wheel is connected with ratchet; Supporting mass is provided with and corresponding guide positioning plate of climbing frame guide rail and adjusting pad plated construction in other side.

2, Fall-proof device for scaffold as claimed in claim 1, it is characterized in that, the centrifugal trigger mechanism of flywheel is installed on the pressing device that is made of support, carrier base and stage clip with the flywheel rotating shaft, the carrier base hinged with support is fixedly mounted on the supporting mass, and stage clip is contained between the end in addition and supporting mass of support bottom lever.