49results about How to "Easy to build and disassemble" patented technology

The invention discloses a formwork early removing mechanism and an early removing formwork system. The early removing mechanism comprises a bottom plate, a top plate, a strut and a bracket; the strut is arranged between the bottom plate and the top plate; the bracket is slidably sleeved on the strut; a bracket supporting sleeve which can be driven to rotate by external force is arranged below the bracket; vertical guide grooves are arranged on a tubular wall of guide sleeves of the bracket; the bracket supporting sleeve is movably annularly sleeved on the peripheries of the guide sleeves of the bracket; a tubular wall of the bracket supporting sleeve is provided with slide grooves which extend upwards along the tubular wall; a horizontal section is arranged at the lower end of each slide groove; hinge pins are transversely and penetratingly arranged on the strut; overhanging portions of the hinge pins are arranged in the guide grooves of the guide sleeves and the slide grooves of the bracket support sleeve in a clearance fit manner; and when the hinge pins are positioned in the horizontal sections of the slide grooves, the bracket is supported by the bracket supporting sleeve, and the lower ends of the guide grooves are matched with the hinge pins. The early removing formwork system is provided with the formwork early removing mechanism. The formwork early removing mechanism and the early removing formwork system have the advantages that the early removing mechanism is high in early removing stability and efficiency; and the early removing formwork system is high in processing and manufacturing efficiency, stable and convenient to erect and detach, high in efficiency, and low in labor intensity, and saves transfer labor.

The invention relates to the field of bridge dismounting, in particular to a whole striding bridge lowering dismounting system based on ground supporting and a construction method thereof. The system comprises at least two sets of supporting structures used for supporting a lowering box beam. Each supporting structure comprises a main beam and two supporting frames located at the two ends of the main beam, wherein the two ends of the main beam are fixed to the main supporting frames, the main beam is arranged in the transverse direction, a lowering power system is arranged at the upper end of the main beam and connected with a sling, and a pocket hoisting device used for hoisting the lowering box beam is arranged at the lower end of the sling. The system is simple in structure, convenient to operate and high in construction safety, environmental friendliness is achieved, energy is saved, and extremely high popularization value is achieved.

The invention discloses an adjustable tripod supporting system and method of a fabricated concrete shear wall structure. Pre-embedded holes are preset in the two sides or the inner sides of the wall bodies; the pre-embedded holes are connected with tripods through opposite pulling or bolting of bolts; the tripods are mounted by utilizing the self stable structures of the wall bodies on the two sides; a row of independent supporting rods are erected in the middle of the wall bodies on the two sides for auxiliary supporting to form the complete and stable supporting system, so that the stable supporting on laminated slabs can be realized, and the supporting system can be widely applied to the engineering of the fabricated concrete shear wall structure. According to the supporting system, the structure is simple, the assembly and disassembly are simple and convenient, and the labor cost can be reduced; the manufacture cost is low, repetitive use can be realized, scaffold supporting is completely replaced, and the use cost is reduced; by utilization of the movable connection of brackets and sleeve, the adjustment is relatively precise; the occupied space of the lower part supporting is reduced, and the follow-up operation is facilitated; the used materials and tools are few, so that the assembly and the disassembly as well as the material and tool turnover by a tower crane are time-saving, and the construction period is shortened.

The invention discloses a manual all-directional cutting sizing device for a steel plate. The sizing device comprises a cutting torch, a movable device and a sliding device. The movable device comprises a rotating disc, the cutting torch is fixed to the upper portion of the rotating disc, and the sliding device is arranged on the lower portion of the movable device. The movable device can rotate by 360 degrees around the center of the rotating disc and also can move front and back on the sliding device in the direction of the cutting torch so as to adjust the cutting position of the cutting torch, so that all-directional cutting of the cutting torch is achieved. Electromagnetic elements are fixed to the bottom of the sliding device and used for fixing the sliding device to the steel plate to be cut. The sizing device is simple in structure, convenient to fix, build and dismantle and easy to operate on site. The sizing device is flexible to use and capable of being repeatedly used in multi-segment assemblies, so that the cost of circulating materials is lowered. The sizing device can rotate by 360 degrees, cut the steel plate according to different shapes and guarantee cutting continuity; meanwhile, the sliding device is firmly fixed to the steel plate to be cut through the electromagnetic elements, and sliding rails of the sliding device can guarantee cutting stability.

The invention relates to a method for increasing horizontal restraint and improving and determining bearing capacity of a support frame. The support frame is loaded in a 5-span * 5-span range in a mode of longitudinal 8 spans and transverse 6 spans; the support frame is loaded in a mode of 2 spans on one longitudinal side and 1 span on the other side outside the loading area; the support frame is loaded in a mode of 1 span on one transverse side outside the loading area and on span on the other side; the height of the frame is 8.2 meters, the step pitch of upright rods is 1.24 meters, the longitudinal distance between the upright rods is 0.9 meter, the transverse distance between the upright rods is 0.9 meter, the height-width ratio of a bracket is 1.5, and the support frame is erected by using phi48*3.2 steel pipes; each joint is connected through bucklers; adjustable bracket jacking phi48*3.2 double steel pipes are used as supporting load main beams on the upper part of the bracket, the adjustable bracket bottom is inserted in the upright rods of the support frame and is fixed, the distance between the upper surface of an adjustable bracket and the top transverse pipe of the bracket is 0.55 meter, and the adjustable bracket extends out of the upright rods for 0.3 meter and is adjusted in the range of 0.3meter. The invention is characterized in that a horizontal restraint rod is arranged on a reaction frame at the height of 5.3 meters, the critical load loaded to the support frame is 24kN. When the load does not change, the upright rods of the support frame deform greatly, and deform transversely by 12cm-15cm, the upright rods and the horizontal restraint rod are connected through bucklers by a linkage wall rod, the transverse horizontal restrain is increased and the critical load is increased to 26.5KN. By increasing horizontal restrain, improving and determining the support frame loading force, the fastener support frame has economic and reasonable structure, and is safe and practical.

A suspended scaffolding with a cast-in-place concrete structure is disclosed, which comprises cantilever steel beams, scaffold boards paved on the cantilever steel beams, full-space scaffoldings and template assemblies, wherein a plurality of cantilever steel beams is provided and fixed on the lower set floor board of a precast floor board via anchoring elements; the scaffold boards are paved on the surfaces of the cantilever steel beams; the full-space scaffoldings are erected on the upper parts of the scaffold boards; and the template assemblies are disposed on the parts of the full-space scaffoldings stretching out of the floor board; diagonal draw bars are disposed on the parts of the cantilever steel beams stretching out of the floor board and connected with an anchoring boom on the edge of an upper floor board; diagonal draw wire ropes are further disposed on the parts of the cantilever steel beams stretching out of the floor board and connected with an anchoring ring on the edge of the upper floor board to form a safety device; anti-slip devices are disposed on the inner end parts of the cantilever steel beams and pre-embedded in the floor board. The suspended scaffolding with a cast-in-place concrete structure disclosed by the invention can be used in a construction for a cantilever concrete structure with a random cantilever height and a random floor height. The suspended scaffolding with a cast-in-place concrete structure is wide in application, good in economical efficiency, safe and reliable, light in dead weight, simple in structure, convenient in building and detachment, and high in efficiency.

The invention relates to a reusable anti-climbing device at the bottom layer of a tower crane on a building construction site. The reusable anti-climbing device is formed by a steel structure framework; and the steel structure frame is composed of stand columns, truss girders, structural cross beams, a door frame, a door, inclined braces, upright poles, connecting pieces, long auxiliary beams, short auxiliary beams and short beams which are connected and combined through bolts and are respectively standard parts with unified specification. The stand columns are connected to four square ground foundations; and the door with a door lock is arranged in the front of the steel structure framework, a reinforcing mesh is laid at the periphery of the steel structure framework, an anti-falling scaffold board is laid on the roof of the upper layer of the steel structure framework, and a color steel plate is laid on the roof of the lower layer of the steel structure framework. The reusable anti-climbing device at the bottom layer of the tower crane on the building construction site is formed by combining the multiple standard parts which are designed according to conditions such as the sizes of standard knots of the tower crane and design codes for lightweight steel structures. The reusable anti-climbing device has the characteristics of being suitable for the sizes of the standard knots at the bottom layers of different tower cranes, capable of being freely combined, convenient, practical and low in cost, and saving labor and time. The reusable anti-climbing device is convenient to dismantle, is in line with a green construction idea and is safe to use on the site.