SU1221209A1 - Device for hoisting heavy cargoes - Google Patents

Description

The invention relates to a lifting and transport engineering and is intended for the installation of tons of large-sized human structures.

The purpose of the invention is to increase the stability of the device, both when the load is lifted when the sections of the pneumatic membrane are filled with a working agent, and when it is mounted, - In FIG. 1 shows a pneumatic lift; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a view of the stabilizer and pneumatic enclosure in the folded state.

The device contains a pneumatic envelope containing several insulated sections 1 arranged one on another in the form of truncated spheres. The sections 1 are interconnected by means of rigid ends 15. The ring 3 attached to the lower section serves as the lower base of the pneumatic membrane, and the ring A fixed on the upper section 1 supports the loading platform 5.

Each section 1 has soft elastic partitions 6. Partitions 6 are located radially, and their intersection coincides with the axis of the pneumatic envelope ... Partitions 6 divide the cavity of sections 1 into isolated sectors 7. Partitions are made of elastic rubber, having the possibility of elongation to 300% and their calculated height is 1/3 of the section height.

All rings 2, 3, and 4 are interconnected by means of a hinged lever mechanism of multi-link mechanisms 8 located outside the pneumatic membrane. The number of lever mechanisms located around each section is equal to the number of partitions 6, This number must be at least three, and the plane of mutual movement of each pair of mechanisms 8 must be combined with the plane of the corresponding partition 6.

Each sector 7 of sections 1 has an autonomous supply 9 to a common source 10 of a working agent, for example compressed gas.

The inoperative and sections 1 of the pneumatic membrane and the links of the hinge-lever systems 8 are in the folded state.

The device works as follows.

A heavy-sized, large-sized construction in the form of beams of bridge cranes, span trusses, etc. is prepared on the loading platform 5. Multiple lifting devices can be used for installation. After that, simultaneously from source 10 to sectors 7 of lower section 1

begin to give under the same pressure compressed working agent. Pneumatic section 1, straightening, begins to lift the load. As the pressure in section 1 rises and as it rises, the hinged-lever mechanisms 8 begin to expand. and a further increase in height is accompanied by the stretching of the material of the partition walls 6. The partition 6 works as an elastic membrane, ensuring the stabilization of the internal

sector volume 7.

In case of distortions due to unbalanced load installation on platform 5, it is included in

work pneumatic stabilization system. Depending on the direction in which the warping goes, they begin to change the pressure in sectors 7 of the section withdrawn 1. Thanks

the fact that elastic partition 6 is tensioned, the volume of sector 7 varies slightly, allowing for a small amount of compressed working agent supplied to control the shape of the sector.

In addition, due to the fact that the partition 6 has a preliminary voltage, when the agent is fed into

the desired sector 7 is its curvature

from the plane and the pressure in the associated sectors 7 will be minimal. After increasing the spatial position of the lifted

cargo the process of filling the sections of the lift with a compressed agent continues.

Since the plane of position of the partitions coincides with the plane in which the hinge-lever mechanisms 8 lie, the latter play the role of a stabilizer of the spatial position of the pneumatic membrane. In the event of a roll being lifted, a subsequent increase in pressure is produced in sectors 7 located on the side of the roll.

When dismantling, the equipmentennated partition 6 plays the role of a stabilizer and prevents parallel and horizontal displacement of the rings 2,

U1-XI

u ///////////

Fi.Z

Editor K. Voloshchuk

Compiled by S. Nefedov Tehred I. Gaidosh

Order 1549/32

Circulation 799 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

Corrector; T.Kolb

Claims (1)

DEVICE FOR THE DAY OF LIFTING OF HEAVY WEIGHTS, containing a pneumatic enclosure located on the base of several insulated sections located one above the other and carrying a cargo platform, as well as a stabilizer of the position of the pneumatic enclosure, characterized in that, in order to increase the stability of the device, the sections are equipped with elastic partitions located inside of these sections radially to the axis of the air shell and dividing the sections into equally-sized sectors, and the stabilizer of the position of the air shell is made in the form of rigid rings j each of which is located between adjacent sections, coaxially with and rigidly attached thereto, wherein the rings are linked by toggle multilink folding mechanisms positioned _on the outside pnevmoobolochki, © having pivotally connected links, arranged in the plane of said partition. SU ,, 1221209