RU2807U1 - BEAM CRANE BRIDGE - Google Patents

Abstract

The bearing bridge of the crane beam, including an I-beam suspended from racks of a horizontal truss, characterized in that the ends of the racks of the horizontal truss are attached to two rolling beams located symmetrically with respect to the I-beam.

Description

An object is a utility model. Bearing crane. The device relates to hoisting mechanisms, more specifically, to

lightweight supporting bridge cranes, beam cranes.

Known crane-beam for large spans, consisting of one truss carrier beam and additional one-sided horizontal truss; to ensure the rigidity of the bridge in the horizontal plane. (see Alexandrov M.P. Hoisting-and-transport

machines. 6th edition of M ,: Higher school, 19. 520s., p. 22.)

The disadvantage of a crane beam is the large weight of the elements of the horizontal truss at large spans, the vertical deflection of the belt

of this farm, the horizontal farm belt does not perceive vertically | th load on the weight of the cargo.

Closest to the proposed one is contractions; a cation consisting of lateral vertical and upper horizontal farms. The racks of the upper truss made of channels support the monorail (see Abramovich II, Berezin VN, Yaure A.G., Hoisting cranes of industrial enterprises. Handbook. M.: Mashinostroenie, 19Sh. 34es., P. .)

The disadvantage of this design is the great complexity of manufacturing vertical trusses.

The aim of the proposed device is to reduce the complexity in the manufacture of a crane beam while reducing the weight of the construction ../.;. G: 7f7 G

The specified goal is achieved by the described structure consisting of

.- .. I,; .-.

FROM an I-beam suspended from the uprights of a horizontal truss, j.

Novigl is that the horses of the struts of the soundproofed fersh are attached to two rolling beams / i, located symmetrically relative to the I-beam.

Figure 1 shows a side view of the bridge.

Figure 2 above.

xV 04

MKI B66CI7 / 00

 - - -. ....- .. .i., P, .4.i-;

The device consists of (see FIGS. 1,2,3). Color, roll beams (in this case channels) I, to which stands 2 of the horizontal truss are attached from below. An I-beam 3 is suspended from the uprights, symmetrically with respect to the rolling beams I. Between the rolling beams I and the I-beam 3, the braces 4 from the corner are symmetrically mounted.

This design is one vertical

bevelless, in which, to obtain the necessary horizontal stiffness, the upper aoyas is symmetrically bifurcated relative to the lower belt. The proaate beams I are elements of the bifurcated upper girdle, the I-beam 3 is the nute girdle. The racks 2 of the horizontal truss connecting the upper girdle to the lower girder serve as a rack element in the dowel-free truss

and perceive, theoretically, the vertical and horizontal forces acting on the rack. In the proposed design, the vertical force from the load is directly perceived by the strut 2, and

horizontal force is perceived by braces 4. Konstr, you are

so that the braces work for stretching and compression.

All construction elements simultaneously create a two-sided horizontal truss.

In the proposed device, in comparison with the prototype, two lateral vertical supporting trusses are replaced by lighter beams, due to which the laboriousness of manufacturing the Hecj / bridge is reduced by 2 ... 3 times and the weight of the construction is reduced

at 10 -15.

Signature:. Abramov / B ,. -,. /4 ;:.,....;... .;,. .. .. ..

Claims (1)

The bearing bridge of the crane beam, including an I-beam suspended from racks of a horizontal truss, characterized in that the ends of the racks of the horizontal truss are attached to two rolling beams located symmetrically with respect to the I-beam.