SU35986A1 - Electromechanical device for lifting the lids (flaps) of open-hearth and similar furnaces - Google Patents

Description

The proposed electromechanical device for lifting the lids (flaps) of open-hearth furnaces and the like is intended to enable the operation of the lids from any point convenient for observation.

In FIG. 1 shows an installation diagram and FIG. 2 is a general view with a partial cut.

The device consists of an electric motor / (Fig. 1), which drives the gearbox / I, which has three worm wheels. Each wheel 77 (FIG. 2) turns the main part 52 with the electromagnetic clutch V. The springs 57 force the main part of the clutch to press against the adjusting ring 56. On the driven shaft 40 are rigidly seated: the electromagnetic part 46 of the clutch V, drum VI and brake pulley 82 band brakes V ///; the latter, WO, brakes the shaft 40, releasing it only when current is passed to the brake maoit 90.

Next to the furnace, a control panel is installed with four protruding handles, one of which serves to start the electric motor (on alternating current 220 V. and the other three to raise and lower each knob. When you lift the handle to the up position current, which is located on the shield inside the console, the current is directed to the windings

{404)

electromagnetic clutch and brake magnet through the limiter. The electromagnetic part 48 of the coupling under the action draws the already rotating part of the coupling to itself, is entrained by it and begins to rotate, thereby turning the load drum VL. As current flows into the electromagnet 90, the brake tape releases the brake pulley and the drum can freely rotate.

The lid is suspended on a rope that is thrown over the rad blocks and, having a few turns on the drum, is fixed with its other end on the counterweight. The counterweight is made in order to reduce the working weight of the lid and, consequently, all dimensions of the mechanism. The weight of the counterweight is less than the weight of the lid (with a minimum lid weight, i.e., when it is burned out, the lid overweight, 20 kg counterweight), therefore, under the influence of its own weight, the lid tends to go down all the time. When the console handle is raised to the position; Up, the drum rotates counterclockwise and lifts the lid. In order to raise the lid, the handle should be supported by hand. When the lift height is sufficient, the handle is released, and the springs move e & in the “stop” position; in this case, the electromagnetic clutch and the Topv are switched off

a corn magnet, and a riarapec spa earaban shchats. The braking tape seizes the Brake Pulley 82 and prevents the drum from turning back. The load (i.e. the lid) remains hanging by the action of the tensioned tape.

To prevent an accident due to the delay of the knife switch in the upper position, a lift limiter X is provided, which turns off the current at maximum lift. If you want to Lower the lid down, turn the corresponding knob to the down position. The current goes into electromogeal; the brake band lowers the brake pulley and the cover drops under the influence of its own weight.

To soften the blows when lowering ((falling) the cover, an air damper IX is inserted, consisting of a piston moving upwards when the cover falls; and compressing air in the upper part of the shock absorber cylinder, which will compensate for the blows and slow down the cover.) The shock absorber is reached by releasing the appropriate amount of compressed air.

/ For the convenience of maneuvering, the AC motor can be started up and back. {On a side, switching the ruby. This is especially important if necessary. "Power descent, in the case of the use of a severely burnt cover. At the end of the driven shaft, a square is provided, on which, in the absence of a current in the workshop, a handwheel is put on, which enables manual operation. The counterweight consists of separate parts, allowing it to be adjusted as desired. An adjusting nut S6 is inserted to regulate the tension of the brake band.

The entire mechanism of the 5th –––––––––––––––––––––––––– of IYAKTEN and is intended to give them a wide opportunity to maneuver them, as well as the exact adjustment of its individual links.

The present device can also be used for other purposes, such as: raising the gates, controlling various types of valves and appliances of thermal installations of metallurgical plants, etc.

The subject matter of the invention.

Claims (2)

1. Electromechanical device for lifting the lids (flaps) of open-hearth furnaces and similar furnaces, characterized in that in order to eliminate accidents when the lids (flaps) are lifted by releasing the brake 82 and activating the electromagnetic clutch V connected to the load drum VI rotated by an electric motor / through the appropriate transmission and gearbox ///, as well as for automatic shutdown of the current when releasing the handle of the knife switch serving the corresponding cover or 33. slon, limited lifting of azhdoy of covers (flaps) and the springs at each cutout, adapted to rotate the knife switch when releasing its handle and transfer it to a position corresponding to the cover or by snagging damper lockup utility drum., 2. Use of the air damper / X in the device according to claim 1 in order to soften the blows when lowering or dropping the lid or damper under the influence of a specific weight. ..- i FIG. 2