SU1283214A1 - Hoisting device - Google Patents

Abstract

This invention relates to lifting devices. The purpose of the invention is to increase sustainability. New in the lifting device is that at least two chains with one-sided bend are used to lift the platform, kinematically connected to each other and located in the working position in mutually perpendicular planes. 6 Il.

Description

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The invention relates to lifting and handling equipment, in particular to mobile lifts.

The purpose of the invention is to increase sustainability.

FIG. 1 shows a lifting device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 - clutch price area; in fig. 5 shows the moment of chain bending; in FIG. 6 - chain link.

The lifting device comprises a base 1, a loading platform 2 mounted on supporting plate chains 3. On chains 3 on the sides facing the other, gripping elements 4 are fixed. Between chains 3, an additional supporting plate chain 5 is placed perpendicular to them, the sides of which are fixed stops 6, which can interact with the gripping elements 4. The length of the chain 5 is equal to the length of the chains 3.

Each of the chains 3 has a one-sided bend, the lower part bends around an asterisk 7 and is located in the guides 8.

Chains 3 consist of links that contain plates 9, at the ends of which are placed in pairs the curved connecting plates 10. The plates 9 are reinforced with longitudinal ribs 11. The link of chains 3 are connected by axes 12, which pass through the ends of the connecting plates 10 and provide rollers 13 interacting with the teeth of sprockets 7, as well as rollers 14 interacting with guides 8 of the base 1.

The chain 5 consists of links made in the form of rods 15, carrying supports 6 and connected by plates 16, which do not allow the rods 15 to move axially relative to each other. The lower plate 16 of the chain 5 is connected to the base bracket 17 of the base 1, and the stops 16 of the working part of the chain interact with the gripping elements 4 of the chain 3 to form a rigid structure that can reliably work in compression. The inoperative part of the chain 5 is placed by the interaction of the stops 6 with the guides 18 in the cargo area 2.

The asterisks 7 are pairwise rigidly connected to the shafts 19, which are arranged symmetrically with respect to the lift. A large device and are connected to each other by means of kinematic wheels 20 coupled to slits 21 mounted on a common shaft 22, which receives rotation from the self-braking of the drive motor ( not shown) and thus provides for synchronous rotation of the shafts 19, and asterisks 7 in opposite directions. The lifting device rests on two wheel pairs 23, by which

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it can move along rails 24. To make the lifting device more stable when lifting equipment, it can be equipped with stops 25, for example, unscrewing from platform 2 and abutting the working boards (not shown), which will ensure its immobility in the direction transverse to rail track. In addition, the lifting device can be equipped with outriggers (not shown) for rigidly attaching the base 1 to the rails 24, as well as impact coupling devices 26 for coupling it to the locomotive or rolling stock cars.

The lifting device can also be made on a rubber run for transporting equipment on workings that do not have a rail track, as well as equipped with a winch to tighten the lifting equipment with platforms up and down and other devices such as limit switches, load limiters and so on Further.

The lifting device operates as follows.

The equipment is loaded at the position of the cargo platform 2 in the lowest position, the equipment that rises first is installed on the platform, and the other can be placed on the base 1.

Cargo lifting is carried out in the following order. First, the lifting device is fixed by outriggers to the rails or otherwise provided with a stable position, for example, in the absence of rails, then the platform lifting drive is activated, while the shaft 22 rotates from the electric drive and through gear 21 and the bevel gears 20 coupled to them. rotates both the shafts 19 and the sprockets 7 planted on them synchronously. The latter move the chains 3 along the guides 8 of the base 1 and together with the cargo platform 2 they lift up, lifting the load. In this case, the chains 3, the exit from the vertical part of the guides 8, cannot be bent, since all the links are in contact with the plates 9, which lie away from the axes 12. Moreover, to ensure the reliability of the device for lifting inside the gripping elements fixed on the plates 9 , slides the stops 6 of the chain 5, drawn from the guides 18 of the load platform 2, and thus prevents the chains 3 from moving from the vertical position, forming a rigid structure.

As soon as pad 2 is compared with the surface of the substage, the lift drive is turned off, the lugs 25 are unscrewed before they interact with the sides of the excavation and, for example, a winch, the load is pulled out

from the cargo platform 2 to the sub-floor. If the gap between pad 2 and the surface of the sub-floor is large, it can be closed with special bridges or improvised means.

The lowering of the platform, both with and without cargo, is carried out in reverse order.

Claims (1)

Invention Formula A lifting device containing a base mounted on it with the possibility of 0 the parallel deployment of a load-carrying platform supporting plate chains on the side facing each other; the grippers are attached to each other, which is distinguished by the fact that, in order to increase stability, it is equipped with an additional supporting plate chain mounted between the main chains perpendicular to them, while on the sides of the additional chain stops for interaction with gripping elements of the main chains are fixed. // 7 7 19 / 72J 2ff g / w y // 7: w //////// (/////// Phi. -four( /four