RU2104362C1 - Method for straightening of crane underway - Google Patents

Abstract

FIELD: bridge crane underway construction. SUBSTANCE: performed is levelling of crane underway made up of at least three sections with each of them accommodating girder resting on supporting column. Determined are values of deviation of girders from straight line in vertical and horizontal planes above each of columns. Girders are connected by removable cover plates above intermediate columns, and released are anchor bolts which fasten girders on extreme columns. For vertical displacement of track sections with released fasteners, middle section of underway track is subjected to load by mass of crane. For vertical displacement of girders in zones of intermediate columns, released are anchor bolts on these columns, and corresponding extreme sections of underway track are subjected to load by mass of crane. EFFECT: high efficiency. 2 dwg

Description

 The invention relates to the reconstruction and construction of crane structures, mainly heavy duty, for example, converter in open-hearth metallurgical shops and especially on subsiding soils.

 A device is known that implements a method of straightening a crane path, including moving vertically and horizontally to determine the size of the beams of a crane path, consisting of at least three sections, each of which includes a beam resting on columns (SU auth. St. 581 183, CL E 01 B 33/00, 1977).

 The disadvantage of the analogue is the complexity of straightening the path.

 The technical result of the invention is to simplify the straightening of the crane path.

 To achieve this technical result, in the method of straightening the crane path, which includes moving vertically and horizontally by certain values of the beams of the crane path, consisting of at least three sections, each of which includes a beam resting on the columns, before moving the beams along vertically and horizontally level the crane path, determine the deviation of the beams from a straight line vertically and horizontally above each of the columns, connect the beams with removable overlays by intermediate columns, loosen the anchor bolts for fastening the beams on the extreme columns, while for the vertical movement of the sections of the track with weakened fasteners, they act on the middle part of the path with the weight of the crane, and to move the beams vertically in the zones of the intermediate columns, loosen the anchor bolts on these columns and act on the mass crane to the corresponding extreme sections of the path in turn.

 Figure 1 schematically shows a continuous crane path, resting from columns A, B, C, D, E, etc., when loading a span B ... C with a bridge crane; in FIG. 2 - the same when loading span C ... D.

 The continuous crane path 1 rests on the supports 2. With the translational movement of the crane 3, continuous crane beams elastically bend. The elastic line 4 of the beam has a maximum amplitude in the span, loaded with a crane 3, and as you move away from the load, the elastic deflections decay. In FIG. 1 and 2 also show the direction of support reactions depending on the load. When the crane 3 is located in the span B ... C in the anchor bolts on the supports A ... D, tension occurs (Fig. 1). When loading the span C ... D, tension occurs in the bolts on the supports B and E.

) и по горизонтали (

) известным путем. Ослабляют анкерные балки на опорах A и D, воздействуют мостовым краном в пролете B ... C, приподнимая балку на опорах A и D на

и перемещают по горизонтали на

, подкладывают подкладки под балку на опорах A и D, ослабляют анкерные болты балки на опорах B и E, перемещают края в пролет C ... D, прижимая балку к опорам A и D и приподнимая на опорах B и E на

, затягивают анкерные болты на опорах A и D, и затем цикл повторяют, пока весь подкрановый путь не будет отрихтован.The straightening of the continuous crane track, resting on the supports A, B, C, D, E, etc., is carried out as follows: level the crane track and calculate the deviations from the straight line vertically on each of the supports (

) and horizontally (

) in a known way. Weaken the anchor beams on the supports A and D, operate with a bridge crane in the span B ... C, lifting the beam on the supports A and D on

and move horizontally on

, lay the linings under the beam on the supports A and D, loosen the anchor bolts of the beam on the supports B and E, move the edges to the span C ... D, pressing the beam to the supports A and D and lifting on the supports B and E on

, tighten the anchor bolts on the supports A and D, and then repeat the cycle until the entire crane run is aligned.

 For the straightening period, the cutting path is turned into continuous using the installation of removable overlays overlapping joints.

 The economic effect arises due to the exclusion of jib cranes from work and the straightening of crane tracks with the least interference to the main continuous technological process in the workshop, for example, steelmaking.

Claims (1)

 The method of straightening the crane path, which includes moving vertically and horizontally by certain values of the beams of the crane path, consisting of at least three sections, each of which includes a beam resting on the columns, characterized in that before the mentioned movement of the beams leveling the crane path, determine the deviation of the beams from a straight line vertically and horizontally above each of the columns, connect the beams with removable overlays over the intermediate columns, weaken the anchors e bolts for fastening the beams on the extreme columns, while for the vertical movement of the sections of the track with weakened fasteners, they act on the middle part of the path with the weight of the crane, and for moving the beams vertically in the areas of the intermediate columns, loosen the anchor bolts on these columns and affect the mass of the crane on the corresponding extreme sections of the path alternately.

Images