CS211556B1 - Girder coupling - Google Patents

Abstract

It combines in a fast and demountable way outwardly lying I beams with full strength utilization. Screwable a rigid connection of both beams is achieved mutually compressing each other flanges travers four pairs of side conical clamps. On beams / fcravers / no adjustments are made and therefore can be done clutch travers to fit additionally and in adverse positions. Top and bottom flange connected beams remain free, usable for traveling a cat with a load. Forces between the traverses are transferred to the wedges and between the wedges a central screw that must be dimensioned over half load. Can be connected even traverses that are not perpendicular to each other practically up to 30 °. Side forces trying to push the conical clamps away from the beams they are eliminated by spreader strippers bolts that secure each pair of clamps in optimal positions. For quick assembly clutches travers two matrix keys and due to the small weights of the individual parts is feasible even in unfavorable conditions positions by a single worker eg ladder. It is sufficient to make the clutch travers primitive maintenance workshop with lathe and a drill. Clutch travers is especially suitable for fast assembly of temporary transport equipment or poorly used / mounted equipment boiler rooms, engine rooms, innovations etc./ and is usable many times. For permanent more often the used crane runway requires revision in shorter terms for inspections of flats and detained screw connections. After release bolts even without completely disassembling the traverser clutch unloaded beams can be moved axially.

Description

The invention solves the screw connection of rolled beams placed on top of each other and in any desired

Angle. Since the bottom flange remains loose, it can travel: a cat with a load that uses the strength of the beams.

According to the prior art, the strength connection of two I-beams is to be solved by welding or screwing the two beams together when the cat is to be moved along the lowest flange. The yoke connection under the given conditions is relatively complicated, especially when joining perpendicular beams.

The welding joint requires an experienced welder. Also, drilling of both beams with the required accuracy is not easy or fast, if only a portable drill is available. Also, the need to use inclined washers to ensure axial thrusts complicates the work. In addition to the laboriousness, the two technologies permanently destroy the beams and reduce their usability after eventual abolition of the structure, which often occurs in short-term assemblies of boiler rooms, engine rooms, innovations, etc., for which beam couplings are particularly suitable.

The above drawbacks are overcome by the beam connector according to the invention, in which each beam connector consists of four pairs of rotary tines having conical surfaces, which bear on the inner flanges of the beams at the inclination of these flanges, each pairs of tines in the central bores being provided with a central. a tightening bolt with locking against loosening and mutually optimal position of the splice pairs are secured by tightening and expanding screws.

According to the invention, the rigid connection of the two beams is achieved by compressing only the two beam flanges that abut one another without damaging the traverses, with the two flanges remaining completely free. Several sizes of beams of the same row can be fastened together with a single beam connector size, depending on the required joint strength, because even beams of different sizes always have the same flange bevel. The same beam couplings can be used many times, it is possible to connect beams not only perpendicular to each other, but also beams with an angle of 90 ° to about 30 ° to each other.

The accompanying drawings show the joining of unequal beams at an acute angle with clamps of different sizes, as an example of wider use, where in Fig. 1 the joining of the beams is shown in front view, while the upper clamps do not show expansively tightening screws; A plan view according to section AA ', the position of which is shown in FIG. 1. In part of this section, the upper beam has been omitted in order to fully depict the lower clamps. Finally, FIG. 3 depicts an expanded cross-section B-B ', the position of which is shown in FIG. 2, illustrating the functional connection of all components.

To the inside of the lower flange of the upper beam / fig. 3 / adjacent tapered surface 2 of the upper clamps 9, adjacent to the inner side 3 of the upper flange of the lower beam adjoins the tapered surface 4 of the lower clamps 10. spacer bolts 6 / fig. 2), whose locked set nuts 7 ^are supported on parallel planes 8 of the tufts due to incompleteness of their rotational shape (FIG.). 2 /. When joining the perpendicular beams, the shortest bolts 6 are sufficient. the sharper the angles to be joined by the beams, the longer the spacers 6, while the clamps 6, 10 and the central screws 5 / FIG. 3 / are still the same. The size of the locking central bolt 5 is determined according to the load of the beams, so that it does not become visible during the assembly tightening. At the factory, the beam connector can be turned and drilled in the simplest maintenance workshop.

Claims (1)

Profile 1 beam connector, characterized in that it consists of four upper claws (9) and four lower claws (10), whose conical surfaces (2, 4) have the same inclination J * as the inner sides of the helmets (1, 3), and the rotating surface of the clamps is limited by two parallel planes (8) each with two bores through which the expansively tightening screws (6) pass, secured with adjusting nuts / 7 /.