4results about How to "Lifting safety" patented technology

The application discloses a large-diameter heat supply pipeline inclined hoisting method and belongs to the technical field of heat supply pipeline construction. The method comprises the following steps: S10, calculating a preset inclination angle of pipeline hoisting and a preset installation position of lifting lugs according to pipeline parameters and shield well hoisting hole parameters; S20, installing the lifting lugs on the pipeline according to the preset installation position of the lifting lugs; S30, connecting the lifting lugs at both ends of the pipeline with a main crane and an auxiliary crane respectively, driving the main crane and the auxiliary crane to hoist the pipeline in parallel and synchronously translate the pipeline to above the shield well wellhead; S40, driving the main crane and the auxiliary crane to incline the pipeline to the preset inclination angle; S50, synchronously lowering the pipeline to a preset positioning point of the shield well by the main crane and the auxiliary crane, disconnecting the main crane, the auxiliary crane and the pipeline, and completing pipeline hoisting. The application can reduce the pipeline hoisting difficulty in the narrow vertical shaft space in the prior art, improve hoisting safety and hoisting installation efficiency.

The component gantry crane and fine adjustment balance control method thereof disclosed by the application realize high-precision displacement adjustment of components through fine adjustment devices to improve hoisting precision, reduce engineering cost, ensure controllable stress of hoisting ropes and improve safety performance of assembly operation under the premise of improving construction efficiency, and have important popularization value for installation of large subway stations. The component gantry crane comprises a portal, two groups of omni-directional fine-adjustable hoisting trolley devices are movably arranged on the top of the portal, the two groups of omni-directional fine-adjustable hoisting trolley devices respectively vertically suspend adjustable balance hoisting devices, the adjustable balance hoisting devices are installed on a cross beam in the vertical direction, four groups of hoisting device force adjusting devices are installed on the cross beam, and hoisting ropes of the hoisting device force adjusting devices suspend prefabricated components; the omni-directional fine-adjustable hoisting trolley device comprises an upper trolley lifting part borne on a lower trolley running device and an upper trolley translation mechanism; running between the upper trolley translation mechanism and the lower trolley running device is perpendicular in the horizontal direction.

The utility model discloses a mould hoisting structure for a permanent magnet jack, which comprises a cross beam and a mould to be transported, and further comprises a hoisting reinforcing mechanism, the hoisting reinforcing mechanism comprises a second electric telescopic rod arranged on the cross beam, the fixed end of the second electric telescopic rod is provided with a connecting rod, and the fixed end of the second electric telescopic rod is provided with a clamping groove; the other end of the connecting rod is connected with a permanent magnet lifting module, an air bellow is arranged at the end, away from the connecting rod, of the fixed end of the second electric telescopic rod, and the air bellow and the permanent magnet lifting module act together. And the auxiliary protection mechanisms are arranged on the outer walls of the two sides of the cross beam. The mold hoisting structure for the permanent magnet jack has the technical effects that the adsorption effect is improved, magnetic force borne by all parts of an object to be transported is uniform, firm adsorption and safe hoisting are ensured, and meanwhile, local deformation or damage of a mold to be transported caused by uneven stress is also avoided.

The utility model discloses a cloth cloth device, including two support platform, support platform fixedly connected with support rod, support rod's top fixedly connected with the crosspiece, install hoist -lift device on the crosspiece, hoist -lift device is used for lifting cloth roll, install telescopic clamping device on the support platform, and telescopic clamping device is used for the cloth roll of fixed cloth roll's cloth roll and is fixed, install tension adjusting device on telescopic clamping device, and tension adjusting device is used for adjusting cloth roll's cloth surface tension. After hoisting cloth roll with hoist -lift device, use telescopic clamping device to lock the both ends of cloth roll's cloth roll and fix, utilize tension adjusting device to ensure that the tension of cloth is always consistent when cloth roll unwinds.