39results about How to "Improve hoisting accuracy" patented technology

The invention provides a horizontal adjusting sling for a spacecraft, which comprises a hoisting ring component, an XY workbench, a hoisting beam and straps, wherein the XY workbench is arranged on the hoisting beam; the top center of the XY workbench is hinged with the hoisting ring component through a universal joint; four straps are arranged below the hoisting beam; the XY workbench comprises an X workbench and a Y workbench; the X workbench slides on the Y workbench through a slide rail along the X direction; the Y workbench slides on the hoisting beam through a slide rail in the Y direction; and the hoisting ring component comprises a hoisting ring connected with a hook of a crane, a middle bearing structure and a two-dimensional inclination sensor b for measuring the angle of inclination of the hook relative to the crane. Compared with the prior art, the horizontal adjusting sling for hoisting the spacecraft solves the problem that automatic horizontal adjustment cannot be implemented in a two-dimensional plane, the digitization and automation in the measuring and adjusting process are achieved, the hoisting accuracy and hoisting efficiency are improved and the labor intensity of operators is reduced.

The invention belongs to the technical field of circular coolers, and discloses a hoisting clamp and a hoisting method for a wheel of a circular cooler. The hoisting clamp for the wheel of the circular cooler is used for hoisting the wheel of the circular cooler. According to the hoisting method for the wheel of the circular cooler, the hoisting clamp for the wheel of the circular cooler is used for hoisting the wheel of the circular cooler, and the hoisting clamp and the hoisting method are used for hoisting the wheel, so that the wheel can be conveniently hoisted to a wheel axle below a square beam of the circular cooler, and the hoisting operation is not blocked by the square beam any more; and meanwhile, the wheel can be conveniently aligned to the wheel axle, the hoisting precision is improved, and the installation difficulty of the wheel is reduced.

The invention provides a method for planning a path of a lift object for a crane. The method comprises the following steps of: projecting an obstacle on a working plane of the crane; performing polar radius-oriented processing on the projection and transforming a coordinate expression form of the obstacle into a polar coordinate expression form; analyzing the obstacle which is positioned on the path of the lift object to ensure that the lift object can pass through the path; and determining a lifting path according to a lifting principle. By the method for planning the path of the lift object for the crane, distances among obstacles can be calculated quickly and efficiently, the planned lifting path can be searched precisely, and the lifting safety and reliability of the lift object can be improved.

The invention discloses a self-mounting three-cylinder combined multistage variable amplitude device, and belongs to the technical field of engineering hoisting machinery. The self-mounting three-cylinder combined multistage variable amplitude device comprises a boom, an auxiliary jib, a variable amplitude main cylinder and auxiliary displacement cylinders, wherein one end of the variable amplitude main cylinder is hinged to the boom; the other end of the variable amplitude main cylinder is detachably hinged to the auxiliary jib; one ends of the auxiliary displacement cylinders are hinged to the boom; rollers are mounted at the other ends of the auxiliary displacement cylinders; wedge-shaped guide rails and roller clamping grooves are fixed on the variable amplitude main cylinder; when theauxiliary displacement cylinders stretch out, the rollers are propped against the wedge-shaped guide rollers; and when the auxiliary displacement cylinders retreat, free ends of the auxiliary displacement cylinders enter the roller clamping grooves. According to the self-mounting three-cylinder combined multistage variable amplitude device, requirements of small mounting interval and large span are met, 0-90-degree large-angle automatic rotation of the auxiliary jib is achieved, the auxiliary jib is automatically mounted without external hoisting equipment, an automatic locking fixing function of the variable amplitude main cylinder is achieved, the variable amplitude device is prevented from swinging / shaking in high air, stability and safety of the auxiliary jib are improved, and hoisting precision is improved.

The invention discloses a prefabricated steel-concrete intermediate column-beam node interlaced tension anchoring structure for prefabricated buildings. Formed cross-shaped steel column; prefabricated column laminate layer arranged on the upper part of the prefabricated column; laminated beam arranged at one end of the prefabricated column; top steel bars exposed on the upper part of the The outstretched reinforcement on the side of the prefabricated column; the multiple reserved perforations on the cross-shaped steel column; the prestressed tendons passing through the multiple reserved perforations; the prestressed steel bars fixed on the cross-shaped steel column A tendon anchoring device, the prestressed tendons are fixed on the cross-shaped steel column through the prestressed tendon anchoring device; this structure ensures the integral stress requirements of the beam-column joints, and makes the joints have a good anti-negative bending moment effect.

The invention relates to a high-precision positioning guide device and its use method, comprising an outer device and an inner device combined, the inner device includes a first channel steel, the bottom of the first channel steel is provided with fixing bolt holes, and the first channel steel There is a Y-shaped guide groove on the side. It can solve the problems that restrict the progress of the project and the quality and safety of construction, and at the same time solve the problems of poor environmental performance, cumbersome disassembly and assembly, unfavorable recycling and turnover, poor rigidity performance, insufficient fixation, poor mechanical properties and poor safety and reliability performance, etc. problems; thereby realizing the rapid positioning and correction of components such as prefabricated walls, and improving the utilization rate of the tower crane and the hoisting accuracy.

The invention discloses a suspension centre automatic adjusting method of a leveling spreader for a spacecraft; according to the method, measured values of a tension sensor and a dip angle sensor and intrinsic parameter of the spreader are used as input, displacements respectively in the X and the Y directions of an XY worktable are calculated by using different formulae, and then iteration is carried out repeatedly until the measured values of the sensors meet the levelness lifting requirement. Compared with the prior art, the accurate adjusting method disclosed by the invention solves the difficulty of fast and automatic leveling of the suspension center of the spreader in a two-dimensional plane, has advanced technical index, achieves digitization and automation of the adjusting process, improves suspension precision and suspension efficiency, reduces labor intensity of operators, can reach the levelness within the range of 5mm / m by only three times of adjustments, and has significant value in application.

The invention discloses a building process of a protection tube of a FPSO (floating product storage and offloading) seawater lift pump. The building process includes: S1, respectively building an upper structure and a lower structure of the protection tube of the seawater lift pump; S2, locating the lower structure of the protection tube of the seawater lift pump at a reserved position of a hull, and hoisting the upper structure to be docked with the lower structure; S3, docking a platform on the upper structure with a hull platform. In addition, the invention further discloses a hoisting process of the protection tube of the FPSO seawater lift pump. The hoisting process includes: T1, hoisting the hull on an eleventh foundation section, mounting and positioning; T2, manufacturing a locating adjustment device; T3, manufacturing a guide plate; T4, docking the upper structure of the protection tube with the eleventh foundation section, welding and fixing. The protection tube of the seawater lift pump is divided into the long upper structure and the short lower structure which are built separately, so that paint wear during hoisting after the structures of the protection tube are integrally coated is avoided, repeated coating period is shortened, hoisting accuracy is easy to control, and difficulty in local paint make-up after the structures of the protection tube are mounted is lowered.