RU1801926C - Double-1-beam travelling crane - Google Patents

Abstract

Usage: the invention relates to hoisting-and-transport mechanical engineering, namely, hoisting devices of bridge-type cranes. SUBSTANCE: crane lifting device comprises a trolley, to the cantilever part of the frame by means of a rack 4 and additional racks 5 a cantilever arrow 8. The additional racks 5 are made of two parts interconnected by hinges, and vertical grooves are made in the upper part of the racks, according to which hinges move. The additional posts 5 have rollers 12 in the lower part that move along the guides 13 attached to the lower post 14 of the span beams 15. The main post 4 is also made integral, connected by a hinge 16 and 17, the axes of which are located in mutually perpendicular planes. 5 ill.

Description

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The invention relates to hoisting-and-transport mechanical engineering, in particular to hoisting devices for bridge-type cranes.

The purpose of the invention is to expand service areas and increase payload.

In FIG. 1 shows a general view of the device in plan; FIG. 2, section AA in FIG. 1; in Fig.3 is a section bB in Fig.2; figure 4 - view In figure 2; figure 5 is a cross section GG in figure 2.

The crane lifting device comprises a trolley mounted on the crane bridge, on the frame 1 of which the main lifting mechanism 2 is mounted, to which the load-lifting hook 3 is suspended on the ropes. The frame 1 has a cantilever part to which a support-rotary circle is attached via the main rack 4 and additional racks 5 6 with the pivoting part 7 of the cantilever boom 8 mounted thereon and connected to the lifting mechanism 9.

Additional racks 5 are made of two parts, interconnected by hinges with axes 10, and in the upper part there are grooves 11 along which axes 10 can move. -In the lower part of the structure there are rollers 12 moving along guides 13, mounted on lower on all 14 span beams 15 of the crane bridge. The main strut 4 is also made integral, the upper and lower parts of which are connected by means of hinge axles 16 and 17 located mutually perpendicularly. There is also a vertical groove in the upper part of the strut 4 for moving the hinge axis 16.

The trolley is moved by means of running wheels 1.8 along guides 19 located on the top of the span 20 of the crane span beams. The console 8 together with the lifting mechanism 9 is rotated by the rotation mechanism 21.

The device operates as follows.

I case. The console 8 with the load is perpendicular to the crane. Under the action of the overturning moment, the part 7 rotates relative to the hinge axes 17 located along the crane bridge, and after lifting, within the gap between the rollers 12 and the guide 13, abuts against the span beam 15.

II case. Console 8 with cargo is located along the bridge. The pivoting part 7 rotates relative to the hinge axes 10 and 16 located in a horizontal plane perpendicular to the bridge, and after

the lift within the gap between the rollers 12 and the rails 13 abuts against both span beams 15.

In this way, the load-lifting device is operable when the loads from the overturning moment are absorbed by the span beams of the crane bridge, designed for ultimate loads. The main lift mechanism operates with a fixed console 8, turned perpendicular to the longitudinal axis of the crane, opposite to the working position of the conductor.

Formula of the invention

A two-cylinder overhead crane comprising a trolley mounted on the guides of the upper railing beams of the bridge and a horizontal cantilever boom with a pivoting device connected to the trolley frame by means of a connecting device on which rollers mounted to interact with the lower guides are mounted

on the span of the bridge beams, characterized in that, in order to expand the umbrella | maintenance and increased capacity, the frame of the trolley is made with a cantilever located outside the bridge

in part, the connecting device includes a horizontal frame on which said rollers and a rotary boom device are directly fixed, two-section vertical

racks, the lower sections of which are rigidly connected to the aforementioned horizontal frame and the upper sections to the trolley frame, with one of the racks located in pairs between the span beams of the bridge, and the other two under the cantilever part of the trolley frame, the corresponding sections of the first racks connected to one on the other, by means of horizontal horizontal axially aligned in each pair and perpendicular to the span beams

axes fixed in the lower sections of these columns and passed through vertical grooves made in the upper sections of the latter, and the corresponding sections of the two second columns are connected to each other by means of intermediate elements and mutually perpendicular additional axes fixed in them, the lower of which are coaxial with another and skipped through performed in appropriate

lower sections of the second pillars of the hole, & upper coaxial with the axes of the first pillars and are guided through vertical grooves made in the upper sections of the second pillars.

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Compiled by J. Karvanov Tehred M. Morgenthal

Proofreader E. Papp

Editor A. Behr

Order 827Mintage

VNIIIPI of the State Committee for Inventions and Discover at the USSR State Committee for Science and Technology 113035, Moscow, Zh-35, Rauska nab., 4/5

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Proofreader E. Papp