35results about How to "Bad luck" patented technology

The invention discloses a segment assembled simple box girder movable trestle construction method. The required construction simple box girder has single hole or multiple holes, and is assembled by a plurality of longitudinal (i.e. along bridge direction) segment box grinders; the method comprises the following steps: prefabricating all the segment box girders for assembling the simple box girder in concentration; assembling and erecting the first hole grinder, which comprises the steps of: assembling and erecting the trestle (i.e. assembling platform), hanging the segments on to the assembling platform according to the assembling sequence and adjusting the arch degree, line style and position accurately, constructing the segments on the assembling platform by segment assembling construction technology until complete the whole hole grinder construction, and dismounting the trestle and moving to the next hole grinder; and performing the subsequent hole grinders in order according to the construction steps of the first hole grinder. the invention achieves the advantages of simple steps, low construction difficulty, short construction cycle and low onetime fund investment; can solves the practical problems existing in the segment assembling construction process of current large-span bridge fabrication machine.

The invention discloses a fabricated aluminum alloy formwork system construction method. The method includes steps of formwork system designing, formwork mounting, concrete pouring and maintaining, formwork demounting and the like. The fabricated aluminum alloy formwork system construction method is convenient to construct and good in effective.

The invention discloses a system for changing a sling of a suspension bridge and a method for changing the sling of the suspension bridge, and relates to the technical field of change of the sling of the suspension bridge. The system comprises a sling clip, a towing wheel, a lifting appliance and two winches, wherein the towing wheel is arranged on the sling clip and comprises a pedestal and a plurality of rolling wheels; the rolling wheels are arranged on the pedestal; the plurality of rolling wheels are arranged along the arc-shaped path side by side to form an arc-shaped traction path; the lifting appliance is arranged above the sling clip and is used for lifting the sling to switch between the sling clip and the traction path; and the winches are connected with anchor heads arranged on two end parts of the sling correspondingly through steel wire ropes. According to the system and the method, the sling can be changed quickly and conveniently under the condition of low lifting height.

A retractable unit horizontal hard protection comprises a protective underframe and a protective railing. The outer side edge of the protective underframe is connected with the protective railing perpendicularly. The protective underframe is formed by connecting two main beams and a secondary beam. The protective underframe is paved with a bottom plate. The bottom plate is provided with a transverse rib. The inner end of the main beam is hinged with the outer side of the bottom of an inter-layer steel supporting bracket connected between two layers of structural floor slabs by a rotating shaft. The outer side of the gravity center for the two main beams is fixed with two hanging rings respectively. A wire cable is connected between the hanging ring and the inner side at the top of the inter-layer steel supporting bracket. The invention can resolve the safety demand and the construction demand of simultaneous construction at upper and lower different working areas in a same vertical direction, thereby reducing the limb working time for workers, lowering the risk of falling matters from high altitude, and simultaneously providing convenience for the inverse transportation of the material tool at the lower section by retracting the protective unit. The horizontal protective system is convenient to process and is convenient and fast to mount and demount; and the horizontal protective system is convenient to open and can be used in recycle manner with low cost.

The invention provides an adjustable support and a construction method thereof. The adjustable support is arranged between a basement ceiling and the ground and is formed by a main force transfer component, the upper part of the main force transfer component is connected with an adjustable head component, the lower end of the main force transfer component is connected with a load dispersing component, the main force transfer component comprises a vacancy filling part, a jack ejector rod on a jack ejector base of the main force transfer component is in contact connection with the adjustable head component which has a linear upward movement trail on the main force transfer component, the vacancy filling part consists of four valve ring vacancy blocks, the inner diameter and the outer diameter of the vacancy filling part are equal to those of the main force transfer component, the vacancy filling part is inlaid between the main force transfer component with the adjusted supporting height and the adjustable head component. All parts are prefabricated in a factory, and are assembled, adjusted, fixed and erected in site. The adjustable support assists large-scale overhang steel structures or large-span steel structure in constructing, so that the tedious condition of overlapping a scaffold is avoided; the height of the head component of the adjusted support is adjustable, so that the problem that supporting stand columns cannot be erected due to the fact that the absolute length of the supporting stand columns is greater than the interlayer spacing of a basement is solved; the adjustable support can be conveniently detached, transferred and reused.

The invention discloses a quick construction method for an over-crossing business line hangar tunnel T-shaped girder in narrow space. The quick construction method includes the following steps that ahangar tunnel foundation pit is dug according to a designed location and a hangar tunnel stand column is constructed; a hangar tunnel vertical girder is constructed, a bracket support is pre-buried and a gantry crane walking railway is set up on the bracket support; a distributive girder and a form board are laid on the top of the hangar tunnel vertical girder to be used as a T-shaped girder primary prefabricating platform, and a gantry crane is arranged on the gantry crane walking railway; a T-shaped girder is poured on the T-shaped girder primary prefabricating platform and hoisted to a vacant zone; if the vacant zone can not be laid fully, then the step is conducted repeatedly; the T-shaped girder primary prefabricating platform is demolished, and the form board is laid on the T-shapedgirder to be used as a T-shaped girder secondary prefabricating platform; a T-shaped girder is poured on the T-shaped girder secondary prefabricating platform and hoisted to a vacant zone and erectingof the T-shaped girder is completed; the T-shaped girder secondary prefabricating platform is demolished and auxiliary facilities are exerted; and other unnecessary facilities are demolished. The problem of insufficient prefabricating places can be solved and the risk of the hoisting operation near the business line is avoided.

The invention discloses a construction method of a super-thick overweight radiation protection concrete cast-in-place beam plate formwork supporting system. The construction method comprises a beam plate bottom formwork, primary ridges, secondary ridges, vertical rods, horizontal rods, bottom horizontal rods, vertical inclined rods and horizontal inclined rods; the beam plate bottom formwork adopts 18 mm thick wood plywood; the secondary ridges are 70*70*5 mm square steel pipes; a distance between the adjacent square steel pipes is 150 mm; the primary ridges are 10# I-shaped steel; and a distance between every two adjacent I-shaped steel is 600 mm. The construction method of the super-thick overweight radiation protection concrete cast-in-place beam plate formwork supporting system has the advantages that the bearing capacity is high by creatively adopting the novel plate buckle type formwork supporting system, the construction of anti-radiation concrete with the thickness of 3.0 m can be well met, the risk of harmful cracks caused by insufficient rigidity of a traditional support system is avoided, the distance between the vertical rods and the step pitch of the horizontal rods can provide larger operation space compared with a traditional supporting system, and shuttling construction and material reshipment of workers are facilitated. In addition, assembly is fast, use is convenient, cost is saved, and popularization is worthy.

The invention discloses an existing line tunnel lining structure of a railway and a construction method thereof. The tunnel lining structure comprises multiple steel arch frames and a cast-in-place reinforced concrete lining. The construction method comprises the steps of 1 existing lining chiseling, 2 determining the installation positions of the steel arch frames, 3 processing and manufacturingthe steel arch frames, 4 transporting the steel arch frames, 5 erecting the steel arch frames, 6 applying anchors, 7 implanting drill nails, 8 laying lining steel bars, 9 applying lining concrete and10 grouting reinforcement. The structure is reasonable, the cast-in-place reinforced concrete lining is closely connected with the existing lining, the existing lining can be effectively reinforced without the influence on an existing lining structure, external formworks can be reused during the concrete pouring process, the construction cost is effectively reduced, and the steel arch frames are used as side formworks, do not need to be dismantled after being used and can be stressed together with the existing lining and work together to greatly improve the safety of the cast-in-place reinforced concrete lining structure.

The invention discloses a rotary lifting device for repairing a coke oven door. The rotary lifting device comprises a main frame, a docking mechanism, a rotating mechanism, a lifting mechanism, a traveling mechanism and a control system, wherein the docking mechanism and the rotating mechanism are arranged on the main frame; the main frame is connected with the traveling mechanism by virtue of the lifting mechanism; the traveling mechanism can move along a ground guide rail; and the control system controls each mechanism to finish the actions such as docking and clamping, rotating, lifting, elevating and traveling of a traveling trolley on the coke oven door. Compared with the prior art, the rotary lifting device disclosed by the invention has the beneficial effects that 1) the device is suitable for two different bolt structures of a pressing mode and a rotating mode; 2) a main frame of a single-side frame structure is adopted, each part of the oven door is convenient to maintain, and the maintenance efficiency is high; 3) the operation is stable and reliable; 4) the lifting action is realized by virtue of retraction and rotation of a folding arm, and the operation is stable and reliable; 5) the left and right folding arms synchronously retract, so that the oven door is lifted to a proper height, and the working conditions are improved; and 6) a set of device can be shared on the machine and coke side, and the cost is saved.

The invention provides a mounting method for the top of a large gas holder of a steel mill. The method comprises the following steps that Step 1, a lifted structure is assembled in an inner wall areaof a gas holder side plate, and a lifter is mounted at the top of a stand column; Step 2, the lifted structure is integrally lifted by a preset distance, then is suspended and stands for a preset time; the steel structure of the lifted structure and temporary lifting facilities are comprehensively inspected; Step 3, lifting is continued, each lifting point accurately reaches a preset position through a hydraulic synchronous control system, related data are measured again, and a hydraulic lifter is locked; and Step 4, connection of the cabinet top and the side plate is completed, and then graded unloading is performed on the hydraulic lifter. According to the method, an integral hoisting mode is adopted, the steel structure at the top of the gas holder is firstly assembled on the ground, and then integral hoisting is carried out through hydraulic synchronous lifting of ultra-large components, so that the high-altitude hoisting workload is reduced to the greatest extent, the mounting andconstruction period is shortened, the construction efficiency is improved, and the construction quality and safety are ensured.

The invention discloses a method for hydraulic lifting and hoisting of a steel-concrete combined section, which comprises the following steps: S1, preparation before hoisting: assembling the steel-concrete combined section on the ground, and mounting a lifting lug and a lower lifting appliance at the top of the steel-concrete combined section; meanwhile, a bailey truss and an ultra-large component hydraulic lifter are installed on the concrete beam, and a special lifting appliance is connected with a lifting point of the lifter; s2, trying to lift: lifting the reinforced concrete section to be 100mm away from the ground, leveling the reinforced concrete section, and standing for 12 hours; s3, formal lifting is conducted, specifically, after the steel-concrete combined section is lifted to the position close to the design position, lifting is suspended, and all lifting points enable the lifted steel-concrete combined section to be accurately in place through the fine adjustment and inching functions of a computer synchronous control system; and S4, graded unloading is conducted, specifically, all loads of the steel-concrete combined section are transferred to a concrete beam, and then hydraulic lifting equipment and temporary lifting measures are dismantled. The construction quality can be effectively guaranteed, the construction efficiency is improved, the construction period is shortened, the construction risk is reduced, and the construction cost is controlled.

The invention provides a high slope supporting material conveying device. The high slope supporting material conveying device comprises a slope bottom fixing ground anchor and concrete anchor block, aslope bottom anchoring steel wire rope, a slope bottom tower, a trolley walking track, a walking trolley, an electric hoist, a slope top tower, a winch, a slope top anchoring steel wire rope, and a slope top fixing ground anchor and concrete anchor block, wherein the slope bottom fixing ground anchor and concrete anchor block, the slope bottom anchoring steel wire rope, the slope bottom tower, the trolley walking track, the slope top tower, the slope top anchoring steel wire rope, the slope top fixing ground anchor and concrete anchor block are sequentially arranged in the slope direction, the walking trolley is arranged on the trolley walking track in a sliding mode, the winch is installed on the slope top tower, and the winch steel wire rope is connected with the walking trolley throughthe slope top tower. The device is simple in structure, convenient to manufacture, capable of ensuring that materials can move up and down while being transported along the slope surface, capable ofimproving the slope construction efficiency, convenient to disassemble and capable of being repeatedly used.

The invention relates to the technical field of bridge construction, in particular to a three-span variable-height steel-concrete mixed continuous beam construction method which comprises the following steps: firstly, constructing a NO. 0 block of a steel-concrete mixed continuous beam; after completion, symmetrically pouring first to eighth hanging basket cantilevers; after completion, hoisting asteel-concrete combined section; during hoisting, arranging a rhombus hanging basket at the position of an eighth poured beam body section, arranging a hoisting platform on the rhombus hanging basket, wherein the hoisting platform is provided with four hydraulic lifters, and the four hydraulic lifters are used for hoisting the steel box girder of the steel-concrete combined section to a mountingposition of the steel box girder from a river middle girder transporting ship; after the steel box girder is hoisted in place, creating a steel-concrete combined section reinforced concrete structureof the girder section, so that a steel-concrete combined section is formed; removing the temporary lock of the NO. 0 block; constructing a mid-span closure section and forming the three-span variable-height steel-concrete mixed continuous beam. The invention has the advantages that hoisting time is short, the traffic can be opened after the vehicle is in place, the temporary occupation time of roads and navigation channels is shortened, and the adverse effect on social traffic is reduced.

The invention relates to the technical field of cast-in-place beams, and particularly relates to a movable cast-in-place beam side formwork device and a using method thereof. The surface of a workingplate is similar to the side face of a cast-in-place beam, the end, away from the cast-in-place beam, of the working plate extends upwards, and a matching hole is formed in the position, higher than the beam face of the cast-in-place beam, of the working plate in the direction close to the cast-in-place beam; a supporting truss is arranged at the bottom of the working plate and used for supportingthe working plate, and walking wheels and an adjusting jacking are arranged at the bottom of the supporting truss. Compared with the prior art, the device provided by the invention has the advantagesthat the working plate matches the two sides of the cast-in-place beam and is connected with the cast-in-place beam through split bolts, so that the pouring quality is guaranteed, and hoisting is facilitated; the adopted modular unit design is suitable for cast-in-place beam construction of various spans, and the applicability is high; the adjusting jacking is arranged, so that the height of a formwork is convenient to adjust; and by adopting a roller sliding design and matching the walking wheels with a channel steel rail, the formwork is very convenient to turn over and transfer.