SU1572979A1 - Cantilever cross-piece - Google Patents

Abstract

This invention relates to a lifting and transport machinery. The purpose of the invention is to simplify the design. The device contains a carrier beam 1, load-gripping bodies 2 and two tanks with non-freezing liquid, connected by a flexible pipeline. One container 4 plays the role of a counterweight, an additional 7 - in the center on the uprights 8 with the possibility of vertical movement. When the cargo is fixed on the traverse, all the liquid is in the container 4. After the cargo is installed, the liquid is poured into the additional container 7 and when the cargo is disconnected, the center of gravity of the traverse without cargo coincides with the axis of suspension. 3 il.

Description

ate VI

hO o xi o

U ////////////// Ј ///////// ///// & //% #, n

The invention relates to the construction and installation of structures, namely, cross-beams, which feed a cantilever-mounted cargo onto windows or under projecting parts of structures,

The purpose of the invention is to simplify the design.

FIG. 1 shows the traverse installed on the loading platform; 2 and 3 - traverse in the process.

Traverse contains carrier beam 1, lifting bodies 2, cantilever reinforced cargo 3, tank 4 counterweight, connecting pipe 5, the locking element 6 and the additional tank 7 with non-freezing liquid, mounted on racks 8.

Traverse works as follows.

When the crosshead is installed on the loading platform (Fig. 1), the locking element 6 is open, and the balancing liquid flows from the counterweight 4 tank 4 above the pipeline 5 to the container 4. Thereafter, the locking element b is closed and a load 3 is attached to the load gripping bodies 2 , When the traverse is raised (Fig. 2), the additional container 7 is lowered to the lower position under the action of its own weight. The center of gravity of the traverse with the load coincides with the axis of the suspension, since the weight of the cantilever-reinforced load 3 is balanced by the weight of the liquid in the tank 4. After the load has been mounted (for example, the formwork panel under

/

one

± I

Lfc

cg

4J

2

with a visor during the construction of an NPP, the locking element 6, having remote control if necessary, is opened by installers, and the balancing liquid flows from tank 4 to tank 7.

The yoke is disconnected from the load and transported to the loading platform (Fig. 3). The center of gravity of the traverse without a load coincides with the axis of the suspension, since the balancing fluid is in the tank 7 and does not create an overturning moment. When installing the crosspiece on the loading platform, the tank 7 automatically moves to its upper position, and the cycle

repeats.

For mounting a load of greater mass, the volume of the balancing fluid increases accordingly; a smaller mass decreases;

Claims (1)

Invention Formula A cantilever cross member containing a carrier beam, a unit for connecting with a load at one end thereof, a counterweight, made in the form of a container, placed at its other end, and an additional container, installed in the center of the beam and connected by pipeline to a counterweight container, characterized in that , in order to simplify the construction, the beam is provided vertical posts mounted from the bottom in its middle part, and additional capacity is installed on these stands with the possibility of vertical movement along them. --I Fig.d