Summary of the invention
The purpose of this utility model is to provide a kind of light-duty suspension bracket, uses this suspension bracket to need not to consider the installation blind area of equipment and the dismounting of equipment self, only with the light-duty suspension bracket of purpose made, can safe, economical, stably finish the installation of cantilever steel girder.
The technical solution of the utility model is: a kind of light-duty suspension bracket, and this light-duty suspension bracket comprises the bottom fastener, and fastener top is connected with steel pipe, and steel pipe the other end is horizontally connected with pole, and pole is provided with assembly pulley.The another kind of double bracing type of this light-duty suspension bracket comprises two triangle supports, is provided with pole connection between the A-frame, and pole is provided with assembly pulley.
Advantage of the present utility model is: a whole set of process safety of light-duty suspension bracket installation girder steel is reliable, and construction quality can be guaranteed fully, installs for girder steel simultaneously and has realized cost degradation.Adopting the present technique girder steel to install can carry out simultaneously with agent structure, roof waterproof, interior decoration engineering etc., has effectively shortened the duration of whole engineering.Expense is operating personnel's a labour cost only, has saved the expenses such as mechanical one-shift of large-scale erecting equipment, remarkable in economical benefits.
The specific embodiment
A kind of light-duty suspension bracket, this light-duty suspension bracket comprises bottom fastener 1, fastener 1 can fix this suspension bracket by the mode that is enclosed within encorbelment beam or connecting element.Fastener 1 top is connected with steel pipe 2, and steel pipe 2 the other end are horizontally connected with pole 3, and pole 3 is provided with assembly pulley 4.
The another kind of double bracing shape of this light-duty suspension bracket comprises two A-frames 5 that are made of steel pipe, is provided with pole 3 between the A-frame 5 and connects, and pole 3 is provided with assembly pulley 4.
During use: to being in the tower crane blind area and influence girder steel in the zone that tower crane removes, elder generation with tower crane with the girder steel handling to roofing, with suspension bracket girder steel is moved to the installation site again and installs.
When placing girder steel, should be at the good lumps of wood of steel beam bottom pad, with moistureproof and prevent that girder steel from producing distortion because of collision.When being installed, girder steel adopt two point symmetry colligations to lift by crane installation in place.
Girder steel according to the beam of encorbelmenting earlier after linking beam, earlier the principle of high absolute altitude is installed behind the low absolute altitude.When cantilever steel girder was installed, the cantilever steel girder in the middle of installing was earlier progressively installed to both sides again.When linking beam is installed, the linking beam on the corner is installed earlier, is progressively installed to the centre again; In same striding, the linking beam that cantilever steel girder is encorbelmented and held is installed earlier, the linking beam at cantilever steel girder middle part is installed again.
The beam of encorbelmenting must consider when installing that the deadweight of linking beam and other load to the beam of the encorbelmenting displacement that end produced of encorbelmenting, suitably raising the end of encorbelmenting to eliminate the influence of various loads.
Tower crane can't be in place girder steel, after hanging on roofing, adopt double bracket type suspension bracket that it is slowly moved to the installation site.Concrete steps are: tie up girder steel, the steel rope other end of pinioning girder steel is fixed on manual hinge one end of suspension bracket, suspension bracket is placed in forward 1～2 meter, girder steel middle part, manually spurs the other end of hinge, by pulling force girder steel is moved forward, when the girder steel middle part moves to the position of suspension bracket, untie the steel rope on the hinge, again suspension bracket is put then to forward 1～2 meter, girder steel middle part, and repeated above-mentioned steps, operation and so forth, girder steel moves to the installation site the most at last.At the good steel pipe of the bottom of girder steel pad, both increased displacing force, can avoid girder steel and roofing concrete that friction takes place again and cause distortion.If need in the girder steel moving process to turn, then suspension bracket can be placed on the girder steel middle part, adopt steel rope two point symmetry colligation girder steels, the steel rope other end is fixed on the hinge of suspension bracket, and the pulling hinge makes girder steel unsettled slightly, the artificial then direction of slowly adjusting girder steel.
Suspension bracket is installed when encorbelmenting beam, suspension bracket is placed on roofing faces one meter, limit, and suspension bracket is connected and fixed by the pre-buried draw ring on steel rope and the roofing, outwards topples to avoid suspension bracket.Since when beam is encorbelmented in suspension bracket lifting steel rope can't colligation at the middle part of encorbelmenting beam, therefore, the balance for the beam that keeps encorbelmenting presses counterweight according to lever principle at the cantilever steel girder fixed end, the beam that prevents to encorbelment when mounted can't installation in position because of knockdown.
When suspension bracket is installed linking beam, adopt two single-side stand type suspension brackets to install simultaneously.Concrete steps are: tie up linking beam, suspension bracket be separately fixed at the linking beam two ends the beam of encorbelmenting face outer half meter, position, limit, linking beam is held on the interim shelf that rides over the beam of encorbelmenting, spurring hinge then makes linking beam unsettled slightly and slowly to encorbelmenting end swing, notice that therebetween artificial controlled makes linking beam it can not acutely be moved, simultaneously interim shelf is moved half meter to the end of encorbelmenting, after moving into place, shelf by manually slowly loosening hinge linking beam is reapposed on the top of the shelf again, this moment, linking beam moved half meter to the end of encorbelmenting, unclamp the firm banking of suspension bracket then, suspension bracket is moved half meter to the end of encorbelmenting again, then repeat above-mentioned steps, operation and so forth, linking beam moves to the installation site the most at last.Spur hinge at last and make linking beam unsettled, remove interim shelf, and carry out the installation in place of linking beam.