SU1337338A1 - Jib crane - Google Patents

Abstract

The invention relates to the field of hoisting and transport machinery, namely to lifting boom cranes. The purpose of the invention is to increase the reliability of the crane. The boom of the crane is made with the beam 5 connected by means of articulated separators 3, 10 with rollers 4, 11 with the column 1 edge a. When the boom beam 5 is rotated relative to column 1, the rollers 4, 11 are self-aligning due to the articulated separators 3, 10. 3 sludge. W - / J with m oo with oo

Description

FIELD OF THE INVENTION The invention relates to lifting and transport machinery, namely, cantilever cranes.

The purpose of the invention is the reliability of the crane

Fig, 1 shows a crane, a general view; in fig. 2 shows a crane boom assembly, side view in FIG. 3 shows section A-A in FIG. 2j in FIG. 4 shows a section BB in FIG. 2

The cantilever crane contains a column 1, carrying boom 2. The lower support-turning unit of the boom 2 contains a closed separator 3 with rollers 4, worn on the column 1 and nesupschy beam 5 of the boom 2, in the lower part of which is mounted a support roller 6 moving along the ring 7 fixed

on the column 1. The upper support-turn is 20 long and carrying the boom beam, the lower node includes a bracket 8 with a central roller 9 located on one side of the column 1, and a separator 10 with rollers 11, which is articulated ,, is located on the other side of the column 1 and is connected to the ends of the bracket 8, connected by the inclined thrust 12 and the stand 13 to the beam 5 of the boom 2. On the beam 5 there is a cargo carriage 14. The boom 2 may have an additional stand 15 and bars 16, 17, the beams 5 entering the suspension bracket 5 on the column 1. The separator 3 may be articulated. The roller 18 of the separator 3 and the roller 9 can be strung. Rollers 6 may be several.

The console crane works as follows.

25

Its parts are mounted on a support roller mounted on a ring fixed on a column and inclined by a cable connected by CO. the middle part of the boom beam and the upper bearing assembly, characterized in that, in order to increase reliability, it is equipped with a stand vertically mounted on the boom beam 30, and the upper support bearing assembly includes a bracket with a central roller located on one side the column, and a separator with rollers, which is articulated, is located on the other side of the column and is connected to the ends of the bracket connected to the inclined thrust and the stand.

35

The vertical forces are transmitted to the column 1 through the ring 7 and the roller 6. The forces from the bending moment are transmitted to the column 1 through the separators 3, using the rollers 4, 11. The rollers 9, 18 are locking. In the zone of movement of the rollers 4, 9 41, 18, thanks to the articulated separator 3, 10, the surface of the column 1 does not require greater precision manufacturing.

Claims (1)

Invention Formula A cantilever crane containing a boom, turntable assemblies, the lower of which includes a closed cage with rollers, mounted on a roller Its parts are mounted on a support roller mounted on a ring fixed on a column and inclined by a cable connected by CO. the middle part of the boom beam and the upper support-swivel unit, characterized in that, in order to increase reliability, it is provided with a stand vertically mounted on the boom beam 0, and the upper support-swivel unit includes a bracket with a central roller located on one side the column, and a separator with rollers, which is articulated, is located on the other side of the column and is connected to the ends of the bracket connected to the inclined thrust and the stand. five at / J J6 G5 17 l-chfieL ten 9 srig.Z FIG.