38results about How to "Reduce the risk of hoisting" patented technology

The invention relates to a method for installing a bridge crane using load-supporting roof beams for hoisting and usage thereof. The invention is characterized in that: hoisting points are arranged on roof beams of a workshop, components of the bridge crane are assembled on the ground on site, and hoists and specified suspenders are used for hoisting the bridge crane; the method mainly comprises the steps of arranging of load-supporting beams for hoisting, hoists and hoisting points, fabrication of the specified suspenders, arranging of assembly pulleys and wire ropes, assembly of the bridge crane on the ground, hoisting of bridge stands of the bridge crane, hoisting of main and assistant trolleys of the bridge crane and installation of the wire ropes and the suspenders. According to the invention, site requirements are low, finished roofing of the workshop does not need to be dismounted, no giant crane is utilized, and facilities purchased and suspenders fabricated at a time can be used repeatedly, thereby saving cost; lifting and suspending with two cranes are avoided, thereby reducing safety risks; components are assembled in place on the ground and hoisted at a time, thereby improving working efficiency and abating risks in high altitude construction; time for actual hoisting is short and operationality is strong; the method is applicable to installation of large and medium-sized bridge cranes without being influenced by sites or hoisting height.

A longitudinally foldable plane truss includes an upper chord and a lower chord that are parallel to each other, a vertical web rod and an inclined web rod are connected between the upper chord and the lower chord, and the upper end of the vertical web rod is in contact with the end of the upper chord rod. Hinged, the lower end of the vertical web rod is hinged with the end of the lower chord rod, the upper end of the inclined web rod is hinged with the part where the upper chord rod and the vertical web rod are connected, and the lower end of the inclined web rod is connected with the lower chord rod and the vertical web rod. The parts at the joints are hinged, and the vertical web rods are stretchable rods or the inclined web rods are stretchable rods; in application, multiple plane trusses are assembled through rods and panels to obtain a plane truss system, and the plane truss system is used as a When working on a platform or a bridge, by controlling the length of the stretchable rod, the vertical folding and unfolding function of the working platform or bridge can be realized. The design can not only be folded and folded vertically, but also has a simple structure and easy operation, which is suitable for structural maintenance and emergency rescue projects.

The invention relates to a staggered buckled type construction method for an underground pipe gallery. Staggered buckled type single-piece prefabricated wall plates are included, the staggered buckledtype single-piece prefabricated wall plates comprise vertical wall plate bodies, and one side face of each wall plate body in the length direction of the corresponding wall plate body is provided with a group of mutually-connected buckled rib plates and a staggered-connected buckled rib plate. The construction method comprises the steps that (1), the two staggered buckled type single-piece prefabricated wall plates are oppositely arranged in parallel, the side faces provided with the buckled rib plates all face outwards, a supporting device is arranged between every two staggered buckled typesingle-piece prefabricated wall plates in an erected manner, and each supporting device and the corresponding staggered buckled type single-piece prefabricated wall plates form an assembling assembly; (2), a plurality of the assembling assemblies are built in the length direction of the pipe gallery and prop against one another, and all the parallel edges located on the same side face the same direction; (3), the outer sides of all the staggered buckled type single-piece prefabricated wall plates are correspondingly connected with the staggered buckled type single-piece prefabricated wall plates again in a buckled manner. According to the staggered buckled type construction method for the underground pipe gallery, only the staggered buckled type single-piece prefabricated wall plates of one structural form are needed, the fabrication difficulty of the fabricated wall plates is lowered, the process that the staggered buckled type single-piece prefabricated wall plates are buckled and connected with one another to be assembled into a stacked wall body is quite simple, the pipe gallery construction process is effectively simplified, and efficiency is improved.

A dual-purpose large-span stiff beam construction structure and its construction method belong to the technical field of stiff beam construction. It includes a support system, the support system includes several groups of first support components and second support components arranged at equal intervals, the first support components include a group of first tool steel pipes arranged at equal intervals, and the second support components include A group of second tool-type steel pipes arranged at equal intervals, between the adjacent first tool-type steel pipes and the second tool-type steel pipes, between two adjacent first tool-type steel pipes and between two adjacent second tool-type steel pipes The steel pipes are connected by several cross bars. In the present invention, the shaped steel beam is hoisted in sections, which reduces the risk of hoisting, facilitates the protection of structures and components, and is safer; and uses the erection of tool-type steel pipe brackets, and realizes the purpose of one frame for dual purposes through adjustable jacking; the construction method is simple The operation is easy, the integrity is good, the construction period is saved, and the cost is reduced.

The invention relates to a construction method of an interlocking type comprehensive pipe gallery. The interlocking type comprehensive pipe gallery comprises interlocking type single prefabricated wall boards. Each interlocking type single prefabricated wall board comprises a vertical wall board body, wherein in the length direction of the wall board body, at least two interlocking rib plates arearranged on one side face of the wall board in a spaced manner and extend in the vertical direction, wherein the horizontal section of each interlocking rib plate is in an L shape. The construction method comprises the steps that (1) two interlocking type single prefabricated wall boards are oppositely arranged in parallel, the side faces with the interlocking rib plates are outward, a supportingdevice is erected between the two interlocking type single prefabricated wall boards, and an assembling component is formed; (2) a plurality of assembling components are erected in the length direction of the pipe gallery, the two interlocking type single prefabricated wall boards of each assembling component are located on the two vertical faces correspondingly, and all the parallel edges on thesame side face the same direction; (3) the outer side of each the interlocking type single prefabricated wall board is correspondingly connected with one interlocking type single prefabricated wall board. By the adoption of the construction method of the interlocking type comprehensive pipe gallery, just one structural manner of interlocking type single prefabricated wall boards are needed, and the whole pipe gallery construction process is simplified.