5results about How to "Reduce hoisting costs" patented technology

The invention discloses an opposite-pull assembly for a UHPC bent cap formwork, the UHPC bent cap formwork and a combined bent cap. The opposite-pull assembly comprises an opposite-pull rod and a pair of opposite-pull rod fixing pieces arranged on the tops of a pair of formwork webs correspondingly. The opposite-pull rod fixing piece comprises a pre-buried fixing plate fixedly arranged on the inner surface of a formwork web and a clamping plate fixedly arranged on the outer surface of the formwork web, and through holes allowing the opposite-pull rods to penetrate through are formed in the areas, exceeding the top of the formwork web, of the pre-buried fixing plate and the clamping plate. And the end parts of the opposite pull rods penetrate through the through holes in the pre-embedded fixing plate and the clamping plate, and are fixed through an inner fastener positioned on the inner surface of the pre-embedded fixing plate and an outer fastener positioned on the outer surface of the clamping plate. The opposite-pull rod is arranged above the top of the formwork web, the opposite-pull rod can be dismantled and reused, and the economic performance is good. And meanwhile, holes are not required to be formed in the formwork webs for mounting the opposite-pull rods, so that the structural integrity of the formwork webs is better, and the appearance is more attractive.

The application provides a wind fan blade hoisting device and a hoisting method, which are resistant to wind and waves. The hoisting device comprises a hoisting beam, a supporting leg mechanism, a fastening mechanism and a lifting belt. Hoisting ears at the top of the hoisting beam are connected with a crane of a mounting platform through a steel wire rope. The hoisting beam comprises a longitudinal beam and transverse beams symmetrically arranged on both sides of the longitudinal beam. An adjusting mechanism is arranged below the transverse beams. Each of the transverse beams is provided with the lifting belt, the supporting leg mechanism and the fastening mechanism which are symmetrically arranged. The supporting leg mechanism, the fastening mechanism and the lifting belt are movably connected with the hoisting beam through the adjusting mechanism. The fastening mechanism is matched with the lifting belt to fasten the blade, so that the blade is connected with the hoisting device to form an integral whole. The application has good universality and can be applied to hoisting blades with different sizes. The application is resistant to wind and waves, can prevent damage to the blade during hoisting, and reduces the requirements for the hoisting environment and the hoisting cost.

The application discloses a bridge hoisting device for narrow space and belongs to the technical field of hoisting equipment. The bridge hoisting device comprises a vehicle frame, a telescopic hoisting arm assembly arranged above the vehicle frame, a first traction assembly and a second traction assembly. The first traction assembly comprises a first winch and a first steel wire rope, and the second traction assembly comprises a second winch and a second steel wire rope. The first winch and the second winch are fixed on the vehicle frame. The first steel wire rope and the second steel wire rope are connected with the telescopic hoisting arm assembly through a pulley assembly and are used for vertical hoisting. The ends of the first steel wire rope and the second steel wire rope are connected with a placing plate. An adjusting pulley assembly is arranged on the placing plate. The second steel wire rope realizes horizontal traction through the adjusting pulley assembly. The bridge hoisting device can adapt to the hoisting requirements of narrow space, horizontally pulls out the bailey beam from the bridge bottom for hoisting, and greatly improves the hoisting efficiency.

The present application provides a hoisting method of a multi-impeller wind turbine generator set, the hoisting method comprising: hoisting and installing a tower by hoisting equipment; hoisting and installing a first connecting structure by the hoisting equipment, so as to install the first connecting structure on the tower; making the first connecting structure yaw a first predetermined angle in a first direction away from the hoisting equipment through a yaw system; hoisting and installing a second connecting structure by the hoisting equipment, so as to install the second connecting structure on the tower. The hoisting equipment can be located at a first position within a rotation radius of the first connecting structure and the second connecting structure, and the first predetermined angle ranges from 90° to 120°, the rotation radius being a maximum outer diameter formed when the first connecting structure and the second connecting structure rotate around the center axis. According to the hoisting method of the present application, the movement of the hoisting equipment is reduced, the hoisting time is shortened, the hoisting efficiency is improved, and the hoisting cost is reduced.