6 results about "Special section" patented technology

The invention discloses a construction method of a tower crane, which is applied to the technical field of tower crane mounting and dismounting, and comprises the steps of tower crane foundation construction, tower crane mounting and tower crane dismounting, in the tower crane dismounting process, firstly lowering standard knots, then dismounting most of counterweights, reserving a small amount of counterweights, and mounting a derrick crane on a load-carrying trolley. A derrick mast crane is used for sequentially disassembling a jib tip section to a third jib section of the jib in a segmented mode, after the derrick mast crane is disassembled, a standard section continues to be lowered, an attachment device is disassembled one by one, and a tower body needs to be lowered to the corresponding height before attachment disassembly every time. And finally, the remaining second section of the cargo boom, the balance weight, the balance arm, the arm root section, the rotary assembly, the special section, the climbing frame, the remaining standard section and the remaining basic section are detached. By arranging the derrick mast crane, the problem that a traditional disassembling mode is difficult to implement under the site limitation condition is effectively solved, the site limitation problem is solved, the safety of disassembling operation is further improved, the construction efficiency is remarkably improved, the construction period is shortened, and the construction cost and the labor cost are reduced.

The utility model discloses a bathroom glass door hinge, and relates to the technical field of glass door opening and closing, the bathroom glass door hinge comprises a support shaft and two rotating shafts, the two rotating shafts are respectively rotatably connected with the middle upper part and the middle lower part of the support shaft, each rotating shaft is provided with a special-shaped cylinder, and one end of each special-shaped cylinder far away from the corresponding rotating shaft is fixedly connected with a support block; first hinge seats are slidably connected to the outer surfaces of the two supporting blocks correspondingly, supporting columns are fixedly connected to one ends of the two first hinge seats correspondingly, second hinge seats are slidably connected to the outer surfaces of the two supporting columns correspondingly, and an adjusting assembly for adjusting the special-shaped barrel is arranged on the rotating shaft. And a fixing assembly for fixing the supporting block is arranged on the first hinge seat. Through the adjusting assembly and the fixing assembly, the effect of adjusting the height and the transverse length of the first hinge seat is achieved, the first hinge seat can adapt to installation hole positions at different positions, and the situation that the hole positions cannot be matched, and consequently a door body inclines is avoided.

The application discloses a special section for correcting the verticality of a tower body of a tower crane, and belongs to the technical field of building construction. The special section is arranged between a pre-buried supporting leg and a standard section of the tower body of the tower crane, comprises four main limbs distributed in a rectangular shape, and is connected between side walls of adjacent main limbs. A mounting cavity is arranged in the middle part of the main limb. A male joint is arranged at the upper end of the mounting cavity. The male joint is slidably connected to the upper end of the main limb. A hydraulic oil cylinder is arranged in the mounting cavity. One end of the hydraulic oil cylinder is fixed in the mounting cavity. The other end of the hydraulic oil cylinder is connected with the male joint. The hydraulic oil cylinder is used for controlling the sliding distance of the male joint at the end of the main limb. A female joint is arranged at the lower end of the main limb. A connecting bolt is arranged on the female joint. The connecting bolt is used for fixing the female joint on the lower end of the main limb. The technical scheme is used for accurately correcting the verticality of the tower body, and ensures that the tower crane is quickly restored to a safe use state.

The utility model relates to the technical field of flat round pipe hot compression molding moulds, in particular to an adjustable flat round pipe hot compression molding mould which comprises a special-shaped section pipe, lower mould laminations and upper mould laminations, the inner sides of the lower mould laminations are movably connected with locking pull rods, the two ends of each locking pull rod are sleeved with locking nuts in a threaded mode, and the locking nuts are connected with the special-shaped section pipe in a threaded mode. The side wall of the locking nut abuts against the side wall of the lower tire lamination. According to the adjustable flat round pipe hot compression molding mould, the cavity of the mould is formed by stacking the laminations, so that the axial length and the cross section shape of the cavity can be adjusted according to the number and the shape of the laminations, and when the axial specification size of a special-shaped cross section pipe is changed, the change requirement can be met by changing the number of the laminations; the special-shaped section pipes of various specifications and sizes can be manufactured by changing the number of the laminations through one set of mould, the structure is simple, machining and manufacturing are easy, laser cutting is adopted for machining of the single laminations, convenience is achieved, and the mould manufacturing cost is low.

The utility model discloses a plunger type main cylinder skin bowl assembly tool, including skin bowl sleeve head structure, first sleeve head mandrel and second sleeve head mandrel, including skin bowl sleeve head structure including integral moulded limit section, main part section, accommodating section and special section, and limit section, main part section, accommodating section and special section are connected in proper order, skin bowl sleeve head structure has perforation, and the perforation runs through limit section, main part section, accommodating section and special section, and the diameter of first sleeve head mandrel and second sleeve head mandrel is less than the diameter of perforation, and the length of first sleeve head mandrel and second sleeve head mandrel is all longer than the length of perforation, the outer diameter of limit section is greater than main part section, and the diameter of main part section is greater than accommodating section, and the diameter of main part section is equal to special section, special section has the gap, through the ingenious combination of several simple components, can plunger type main cylinder skin bowl correct, fast assembly in place to the realization plunger type main cylinder skin bowl assembly efficiency's improvement. Save the assembly time, has produced the considerable benefit.

The utility model belongs to bridge waterproof technical field especially relates to a beam end waterproof drainage expansion device, it includes: the connecting plate and the two groups of special section bars symmetrically set in the both sides of connecting plate, the both ends of connecting plate are connected with two groups the inside slide of special section bar respectively, the inside of special section bar is equipped with movable cavity, the movable cavity is equipped with the connecting plate in the slide, and movable cavity is communicated with one end of drainage hole, the other end of drainage hole is through the side wall of special section bar close to the connecting plate, and is located in the lower part of the side wall of special section bar, a plurality of anchoring steel bars are equipped on the side wall of special section bar away from the connecting plate, the end of special section bar is equipped with water collecting tank and drain pipe. The water in the device drops to the water collecting tank under the action of gravity, and then is discharged through the drain pipe, which can timely discharge the water, reduce the long-time soaking of the special section bar and the connecting plate by the water, and improve the service life of the bridge beam end waterproof drainage expansion device.