Moving business

Hoisting equipment

Hoisting equipment

   , determination of hoisting methods and technical measures

    1, the construction method of determining

    based on actual lifting body parameters, structure and site conditions, lifting apparatus and method of using different, generally tall hoisting cranes hoisting of materials and equipment, lower mechanical hoisting material equipment, uses a mobile crane hoisting of medium, large two car cope with each other can be used for lifting.

    2, equipment lifting points identified and lug type selection and installation

    equipment equipment lifting lug that can be used on its own lug, without mounting lugs on the equipment according to installation requirements, in accordance with the relevant specifications select the lug fabrication and installation equipment. Lugs should generally be used for making and consistent body of material, and material inspection.

    3, crane beam design and Sling selection

    prior to the lifting device must be according to the weight of the lifting equipment, structural analysis calculations, lifting beam design, choose a suitable hoisting machinery. Sling selection, through specific formulas, control various types of allowable stress of steel wire rope, to be determined. Calculation of to consider reduction coefficient, uneven coefficient, coefficient of dynamic load and safety factor.

    4, windlass dragged row slip delivery methods

    in the process of lifting, hoist traction Drag row slip the delivery method is generally used. This method requires the design of a steel exhaust, front a traction hoist. The equipment requires high glide path, roads not only compact, but also smooth. In the course of operation, to lifting the overall coordination and operational cooperation requires coordinated, in order to ensure continuity and stability of the installation process

    5, skirt material reinforcement device

    If the device is heavy weight, large size, lifting force focus rear skirt. In order to prevent lifting the skirt in the process of deformation, measures must be taken on the bottom of the skirt, added triangular brace or cross support frame, reduce the deformation of hoisting the skirt, so as not to affect the speed of equipment in place.

   , lifting the second step

    1, equipment, on the missed approach

    in the case of the preparatory work done, began organizing on the equipment comes into play, and the lifting work.

    2, lifting preparations

    device in front of the lifting, and must be done through careful inspection and verification work. Check the device installed in the correct Datum marks, azimuth marks; check whether the equipment lifting lugs meet installation requirements.

    3, lifting Sling System

    includes pulley hanging hanging ears, electric hoist, pull test and adjustment of bearing, tractive and trailing exhaust system settings, and so on.

    4, load test

    check before the load test; lifting lifting Operations Commander low-down; layout elements and main contents of the monitoring posts to monitor, crane test down multiple times, each section has a coordination and security review changes, such as the various parts.

    5, hoisting

    the associate conductor of the order made by the Chief of the official, check the post to post and check the command signal is normal; position reports readiness, and signals inform the podium; formal lifting, equipment when you leave the temporary bearings 500-800mm stop and for further inspection, each post should report the situation is normal; bearing removal equipment and ground debris, and continued to lift.

    three, notes

    1, command system is lifting the main core, is also key to the lifting. Therefore, you should set up a leading group of lifting, operating systems for lifting and formulate a comprehensive and efficient command, drawing lifting jobs plan, exercise machine, person, title, responsibilities, the entire installation process for an orderly and smooth.

    2, as a large-scale equipment hoisting, must establish a set of strict and effective management methods, let each of the presence of staff members are aware of their responsibilities in order to ensure the success of a lifting.

    3, and construction site using crane job Shi strictly implementation "ten not hanging" of principles, that "weight unknown not hanging, and eat soil not clear not hanging, and signal not clear not hanging, and has up no fell not hanging, and hanging real not clear not hanging, and night no lighting not hanging, and Sling not meet provides not hanging, and hanging real lashing not firm not hanging, and hanging real upper and lower was not hanging, and six level wind above not hanging".

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