39results about How to "Reliable hoisting" patented technology

The invention provides an adjustable offshore large wind power blade lifting appliance and a lifting method thereof, and relates to the blade lifting appliance and the lifting method of an offshore large wind power generator set. According to the lifting method, the adjustable offshore large wind power blade lifting appliance is adopted, and the lifting appliance comprises a platform, a blade rootend clamp, a blade tip end clamp, a balance weight and a swing arm, wherein the swing arm is hinged to the upper surface of the platform, the lower clamping head I is carried out horizontal positioning control by utilizing the positioning hydraulic cylinder I of the lifting appliance, the lower clamping head II is carried out horizontal positioning control by utilizing the positioning hydraulic cylinder II, the upper clamping head I and the upper clamping head II is carried out fall control by utilizing the clamping hydraulic cylinder I and clamping hydraulic cylinder II respectively, the hydraulic cylinder is adjusted and the hydraulic cylinder can be used for performing lead hammer intersection angle control on blades installed in front of the impeller, and adjusting requirements of mounting angles of blades can be met; except rubber block I and rubber block II, other parts of the lifting appliance are not in make contact with the blades in the whole lifting process, and the clamping force can also be controlled by clamping hydraulic cylinder I and clamping hydraulic cylinder II, the surfaces of the blades cannot be damaged, and reliable lifting is carried out on the offshore large wind power blade.

The invention relates to a structure and a method for integrally a breaking pile head of a pile foundation. The structure comprises the pile foundation, and main ribs of a reinforcement cage and sounding pipes, which are positioned in the pile foundation; main rib sleeves sleeve sections, higher than the top surface of a design pipe body, of the main ribs of the reinforcement cage; a gap is formed between the outer diameter of each main rib and the inner diameter of the corresponding main rib sleeve; a sounding sleeve is arranged on each sounding pipe in a sleeving manner; a separating pipe is arranged at the position of a pile head cutting line by encircling the main ribs of the reinforcement cage; the separating pipe comprises a flexible outer pipe and inner ribs inserted in an inner hole of the flexible outer pipe; after the pile foundation is cast, the inner ribs are pulled out of the separating pipe, separating holes are forming by drilling, separating wedges are inserted into the separating holes, and the pile foundation is knocked to enable the pile head and the top surface of the design pipe body to be separated. The structure and the method have the beneficial effects that the positions of the sounding pipes and the main ribs of the reinforcement cage in the pile foundation are not required to be searched any more, the main ribs are prevented from being damaged in the breaking construction; the pile head after breaking is flat in structure.

The invention discloses a demolition construction method for an overpass existing line arch bridge. The demolition construction method comprises the steps: 1, erecting a protective shed frame; 2, carrying out static crushing demolition on the arch blasting demolition structure; 3, manually removing the blasting protection layer; 4, cutting the removed arch ring; 5, hoisting the arch ring to be hoisted; and 6, dismantling the under-arch structure. The method is simple, reasonable in design, easy and convenient to construct and good in using effect; the protection shed frames fixed to the frontside and the rear side of the removed arch bridge are adopted for effective protection, meanwhile, the structure on the arch of the removed arch bridge is removed in the mode that static crushing andmanual chiseling are combined, it is guaranteed that a plain concrete arch ring cannot be damaged in the static crushing process, and an existing spanned railway line cannot be disturbed. After the arch ring is exposed, the removed arch ring is cut and decomposed through a rope saw and then hoisted and removed, then the under-arch structures on the left side and the right side are rapidly removed,the construction period can be effectively shortened, the arch bridge removing efficiency is improved, and the removing process is safe and reliable.

The invention relates to the technical field of assembled buildings, and particularly relates to a prefabricated plate manufacturing, hoisting and secondary pouring integrated device and a construction method. The device comprises a die table, supports and brackets. The die table is provided with a plurality of positioning grooves. The corresponding bracket is placed in each positioning groove. Each bracket is detachably connected with the corresponding support. When concrete is poured on the die table and prefabricated plates are formed, the supports and the prefabricated plates are poured into a whole. When a plurality of die tables are stacked, the supports can be used for supporting the upper-layer die table. When the multiple prefabricated plates are stacked, the supports can be usedfor supporting the upper-layer prefabricated plate. When the prefabricated plates are subjected to secondary pouring, cast-in-place layer concrete, the supports and the prefabricated plates are pouredinto a whole. By means of the prefabricated plate manufacturing, hoisting and secondary pouring integrated device and the construction method, large-batch plane production or three-dimensional production of the concrete prefabricated plates can be achieved, and the safe and reliable continuous operation process of storage, transportation and hoisting is achieved.

The invention discloses a lifting-type multifunctional stretcher bed for underground rescue. The lifting-type multifunctional stretcher bed for the underground rescue comprises a hollow stretcher body; a bed body is arranged above the stretcher body; a bed body hanging rod is arranged at each of the left end and the right end of the bed body; a stretcher hanging arm is arranged at each of the left end and the right end of the stretcher body; a hanging arm connecting piece is arranged at the top end of each stretcher hanging arm; a vertical hanging rod is arranged right above each stretcher hanging arm; the bottom end of each vertical hanging rod is fixedly connected with the top end of the corresponding stretcher hanging arm through the corresponding hanging arm connecting piece; a transverse hanging rod is arranged above the vertical hanging rods; the top ends of the vertical hanging rods are fixedly connected with the left end and the right end of the transverse hanging rod; the top end of each bed body hanging rod is fixedly connected with the transverse hanging rod; a lifting sleeve is also arranged on the transverse hanging rod. According to the lifting-type multifunctional stretcher bed for the underground rescue, the stretcher bed is hung reliably through the lifting sleeve and the stretcher hanging arms and the bed body hanging rods which are matched with one another, and the stretcher bed can float and move in water through an inflatable airbag.

The invention discloses a C-shaped lifting appliance and an appliance for lifting a thrust wheel of an excavating machine. The C-shaped lifting appliance comprises a main lifting plate, two first limiting plates and two second limiting plates, wherein the main lifting plate is a C-shaped plate body of certain width; a groove is formed in the middle of a lower hook of the main lifting plate; the first limiting plates are respectively fixed on the inner side surface of the main lifting plate in positions on two sides of the groove, and are arranged in the width direction of the main lifting plate; the second limiting plates are respectively fixed on the outer side surface of the main lifting plate in positions on two sides of the groove; and each first limiting plate and an adjacent second limiting plate form a two-stage step. The appliance for lifting the thrust wheel of the excavating machine comprises a rigging and the C-shaped lifting appliance hung on the rigging. Due to the C-shaped lifting appliance, the thrust wheel of the excavating machine can be limited in a plurality of manners, so that the thrust wheel can be lifted reliably, and danger of slipping caused by improper lifting is avoided during the assembly of the thrust wheel.

The invention discloses track beam hoisting equipment suitable for high-speed magnetic levitation, which belongs to the technical field of high-speed magnetic levitation track construction, and can realize reliable walking on a T-shaped beam of a high-speed magnetic levitation track through corresponding arrangement of structures such as a vehicle body, a walking mechanism, a hoisting main beam, a main beam sliding plate on the hoisting main beam, an electromagnetic hoisting clamp and the like. And the reliable hoisting of the high-speed maglev track beam can be accurately realized through the reciprocating translation of the main beam sliding plate along the longitudinal direction of the hoisting main beam and the reciprocating lifting of the hoisting main beam in the vertical direction. The track beam hoisting equipment suitable for the high-speed magnetic levitation can reliably walk on a T-shaped beam, magnetic attraction hoisting of the high-speed magnetic levitation track beam is achieved after reliable walking, beam body construction in the construction environment with the limited operation space is met, the beam body construction operation process is simplified, impact damage to related walls and equipment in the hoisting process is avoided, and the hoisting efficiency is improved. And the accuracy and reliability of beam body hoisting construction are guaranteed, and good practical value and application prospects are achieved.

The invention discloses a clutch lifting device. The clutch lifting device comprises an L-shaped lifting main plate, the L-shaped lifting main plate comprises a side plate and a bottom plate, a connecting screw rod is arranged at the bottom of the side plate of the lifting main plate in a penetrating mode, the lifting main plate is connected with the connecting screw rod in a threaded mode, a circular supporting block is arranged on one side of the connecting screw rod, and the bottom of the circular supporting block makes a contact with the bottom plate of the lifting main plate; a rotating rod is arranged at the other end of the connecting screw rod; two bolts penetrate through the upper part of the side plate of the lifting main plate, connecting nuts are arranged on the bolts located on one side of the bottom plate correspondingly, sleeves sleeve the screw bolts arranged on the other side of the bottom plate, and lifting supporting blocks are arranged between the sleeves and the end surfaces of the screw bolts. According to the clutch lifting device, the lifting device is small and light, lifting is reliable, by rotating the circular supporting block, moving of a supporting point can be realized, thus the perpendicularity of the part positioning surface is adjusted during hoisting, and parts can be conveniently installed. The invention further discloses a debugging method of the clutch lifting device, operation is easy and convenient, and lifting requirements of different parts can be met.

The invention discloses a hoisting method of an offshore crane. The method comprises the following steps that three hoisting points which are not located in the same plane are randomly taken, and thegravity center of a base is solved; hoisting points of hoisting are determined; lifting lugs are connected to the lifting points; steel wire ropes of the crane are connected with the lifting lugs to realize lifting of the base; a rotating platform assembly is hoisted; three hoisting points which are not located in the same plane are randomly taken, the gravity center of the rotating platform assembly is solved, and the hoisting points for hoisting are determined; a lifting lug is connected to the lifting point of a left side connecting lug; steel wire ropes of the crane are connected with thelifting points on the lifting lug on the left side and a right side connecting lug to lift the base; a tripod is hoisted, three hoisting points which are not located in the same plane are taken randomly, and the gravity center of the tripod is obtained; hoisting points of hoisting are determined; steel wire ropes are connected with the top end hoisting point and the lower hoisting point, and the upper ends of all the steel wire ropes are gathered and connected to the crane, and the crane is used for realizing hoisting; and a crane jib is hoisted. The method has the advantages that selection ofthe hoisting points of crane components is accurate and convenient, and the stress of the components is reasonable during hoisting.

The large-diameter pipe joint hoisting clamp comprises an equal-thickness clamp body made of steel plates, the clamp body is integrally in a U shape, the clamp body comprises a bottom plate, a hoisting plate and a supporting plate which are integrally arranged, the hoisting plate and the supporting plate are perpendicularly arranged at the two ends of the bottom plate respectively, a hoisting hole is formed in the hoisting plate, and the supporting plate is provided with a clamping hole. A reinforcing plate is obliquely arranged and welded to the top end of the supporting plate, the reinforcing plate inclines towards the inner side of the supporting plate from top to bottom, and the width of the reinforcing plate is larger than the thickness of the supporting plate. And the large-diameter pipe joint is hoisted by taking the upper surface of the reinforcing plate as a supporting surface and taking the upper surface of the bottom plate as a supporting point. The fixture is simple in structure and convenient to assemble and disassemble, the large-diameter pipe joint with the wall thickness larger than or equal to 150 mm can be rapidly and reliably hoisted, the hoisting problem of the large-diameter pipe joint is effectively solved, and the on-site assembling and disassembling efficiency of the large-diameter pipe joint is improved.