SU1379242A1 - Counterbalanced load-lifting device - Google Patents

Abstract

This invention relates to a lifting and transport equipment. The purpose of the invention is to simplify the design and increase reliability. The device consists of a double-shouldered beam 3 with a spring-loaded trolley 8 with a lifting mechanism 4 installed on its shoulder. When lifting a load by securing the cart 8 by means of a spring 9, the latter is moved and installed in the setting that ensures the balance of the load, I il.

Description

g /

(L

/ J.

The invention relates to lifting devices, and more specifically to mechanisms for moving loads along a monorail.

The purpose of the invention is to simplify the design and increase reliability.

The drawing is a device, a general view.

The device contains a movement mechanism 2 mounted on a monorail 1, with a possibility of rotation in the horizontal plane a double-shouldered beam 3 suspended from it with a lifting mechanism 4 with a cargo cable 5. The double-shouldered beam 3 is equipped with end rollers 6 and 7. The lifting mechanism 4 on the beam 3 is mounted by a trolley 8 and with the beam 3 is connected by a spring mechanism 9. The lifting mechanism 4 is provided with a limit switch 10, and the beam 3 is respectively an end stop 11. The starting position of the lifting mechanism 4 is determined by the stop 12 on the beam 3. At the end of the canal This 5 is fixed cargo hook 13.

The device works as follows.

In order to grip the load, for example from the floor, the drive 13 of the lifting mechanism 4 is turned down. Capturing the load, the mechanism 4 lifting include lifting. At this time, the lifting mechanism 4 under the influence of the spring-loaded mechanism 9 is in its original position at the stop 12. In the initial period after the lifting mechanism 4 is switched on, the load is not lifted, and when the rope 5 is coiled up onto the drum of the lifting mechanism 4, the latter has overcome the calculated increasing return force spring mechanism 9, moves along the beam 3 under the influence of a loaded

JO

5 0 5

0

five

0

five

of the rope 5 to the left at a distance providing the moment of mass of the lifting mechanism 4 on the left shoulder of the beam 3, equal to the moment from the lifted load on the right shoulder of the beam 3. After the lifting mechanism stops on the beam 3, the load starts to rise. When the load is placed at the designated place, as the tension in the rope 5 is relieved, the lifting mechanism 4 returns to its original position under the influence of the spring mechanism 9.

In the case of a load gripping with a mass exceeding the load capacity of the device, the lifting mechanism 4 moves up to the stop of its final switch 10 to the stop 11 on the beam 3 and is disconnected without lifting the load, protecting the device from overload.

Claims (1)

Invention Formula Balancing its load-lifting device, containing a full-swing two-beam beam with a cable-blocking system for lifting cargo installed on one shoulder, and a counter-balancing mechanism with a spring-loaded counterweight carriage on the other, characterized in that, in order to simplify the design and improve reliability, it is equipped with to the load lifting drive chain with a limit switch with a movable element and an end stop, with the load lifting drive and a moving element limit switch mounted on a spring-loaded counterweight carriage, and an end stop at the end of the other shoulder of the two shoulders of the beam with the ability to interact with the movable element of the limit switch when the counterweight carriage moves to its extreme position.