SU698910A1 - Tower crane - Google Patents

Description

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The invention relates to the field of hoisting machines, namely, self-erecting tower cranes.

Known tower crane containing boom with a cargo trolley and suspension, counterweight console with cargo winch and cargo rope, packaged in blocks, which are mounted on the counterweight console and counterpart plate, equipped with locking elements l

A disadvantage of the known crane is its increased metal intensity due to the presence of additional cable blocks, as well as an increase in the length of the cargo rope.

The purpose of the invention is to reduce the metal capacity of the crane.

This goal is achieved by the fact that in the blocks against the spring of the console and the counter-load slab of the stock the working branch of the load rope and the counterweight console is made with holes for the fixing elements that are mounted on

the counter-load plate and are made in the form of conical pins with nuts, while the blocks fixed on the counter-load plate are provided with OPEN cheeks, and the nuts are made in the form of cones.

FIG. 1 shows a general view of the upper part of the proposed tower crane; on fit, 2 - counterweight console tower crane; in fig. 3 shows section A-A in FIG. 2; in fig. 4 shows a section BB in FIG. 2; FIG. 5 shows a counterweight console in front of the lifting of the counter-load slab; in fig. 6 Scheme of cargo rope stocking when lifting the counter-load plate.

The tower crane (Fig. 1) has a tower 1, a beam boom 2 and a counterweight console 3. On the counterweight console 3 there is a cargo & winch 4 (Fig. 2), from which the working branch of the load rope 5, which bends around the rope block 6, comes off, blocks cargo trolley and hook suspension On counterbalanced console 3 installed plate 7 counterbalance. The counterweight console 3 is equipped with bushings 8 with tapered holes (Fig. 3), and the counterbalance plate 7 is provided with a guide and tapered pins 9 whose ends have a threaded part 1 on which nuts 11 are screwed, also having a cone shape. When securing the counterbalance plate 7 to the counterweight console 3, a washer 12 is placed under the nut 11. The counterbalance plate 7 is also equipped with rope blocks 13 equipped with folding cheeks 14 turning around the axes 15 (Fig. 4). Blocks 16 and 17 are also fastened to the counterweight console. Lifting the load-bearing plates 7 is performed in the following sequence: lifting the hook hook in the cargo trolley and fixing them among themselves, turn on the cargo winch 4 to unwind the cargo rope 5, thus forming the free part of the cargo rope 5 is lowered between the cables and blocks 16 and 17 (Fig. 5). At the same time, the threaded part 1O of the guide cone pins 9 is closed with a nut 11. The cheeks 14 of the rope blocks 13 are turned to a horizontal position, the load rope 5 is driven into the streams of the rope blocks 13, after which the cheek 14 is again set to the working position. FIG. 6 shows the loading of the cargo rope 5 when lifting the counterbalance plate 7; With the help of the cargo winch 4, the counterbalance plate 7 is lifted until the guides of the taper pins 9 fit into the conical rotary sleeves 8 of the counterweight console 3. The nut 11 protects from damage to the 1O thread. By pressing the plate 7 of the counterweight to the counterweight console 3, unscrew the nuts 11, install the washer 12 and re-screw the nut 11. Releasing the plate 7 of the counterweight, loosen the tension of the load rope 5, turn the cheek 14 into a horizontal position and release the load rope 5 from the rope blocks 13. By lifting the load rope 5, the hook suspension is released from fixing it with the load trolley. The invention of the invention 1. A tower crane containing an boom with a cargo telekika and suspension, a counterweight console with a GPW winch and a cargo rope stored in blocks, which are fixed to the counterbalance console and a counterpart plate, provided with fixing elements, characterized in that In order to reduce the metal capacity of the crane, the working branch of the cargo crane is stocked in blocks of the counterweight console, and the counterweight console is made with holes for the locking elements that are mounted on the counter-load plate and are made in e conical pins with nuts, wherein the blocks are secured to plate counterweight provided with folding jaws. 2. Crane according to claim. 1, distinguished by the fact that the nuts are made in the form of cones. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2428О77, cl. B 66 C 23/72,

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