SU1650342A1 - Covering devices for knock-out grids - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to foundry, in particular, to devices for covering knock-out grids. The purpose of the invention is to increase labor productivity and quality of protection against dust penetration into the environment. The device comprises a traverse 1. on which a winch 7 and a casing 6 of heat-resistant dust-proof fabric are installed. 3 il.

Description

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Fig1

The invention relates to foundry and can be used to shelter knock-out grids.

The aim of the invention is to increase productive and labor and improve sanitary and hygienic working conditions.

Figure 1 is given a device, a general view; figure 2 is the same, top view; on fig.Z - the same, side view.

The cover of knock-out grids contains a lifting beam yoke 1 having two chain closed straps 2 designed to grip the flasks 3, a ring 4 with earrings for hanging an overhead crane on the hook 5, a casing 6, an electromechanical winch 7, a power cable 8. The lifting beam 1 has a frame 9, the dimensions of which in plan exceed the dimensions of the knock-out lattice 10. On the frame 9, the cover 6 is fastened, which is a cover made of heat-resistant dust-proof fabric (for example, fiberglass). The casing 6 is fastened to the frame 9 by bolts, simultaneously fastening the components of the electromechanical winch 7, as well as with glue to the frame elements 9, including its entire perimeter.

The height of the casing (cover) is chosen so as to completely cover the embossing grill 10 with the flasks 3 mounted on it. On the frame 9 mounted nodes electromechanical winch 7, including a drive with two drums and a polyspast. The polyspast has a system of deflecting blocks through which the outer sides of the casing 6 miss the ropes 11, which are wound onto the drums of the electromechanical winch 7. The ropes 11 are attached to the brackets 12, and the latter to the metal plates 13, between which the edges of the casing 6 are fixed and which serve casing cap.

The ventilation suction is brought from below to the base on which the embossing grill 10 is installed (FIG. 3).

The power cable 8 is connected to the electric motor of the winch 7 and is wound on a drum connected by a coupling with a lifting mechanism of a bridge crane (not shown).

For adjusting the height of raising and lowering the casing 6, an auxiliary device 14 (FIG. 2) is provided, comprising an open gear pair, a flag and a proximity sensor, in the slit of which the said flag goes

The device works as follows.

The lifting beam 1 is permanently suspended from the hook 5 of an overhead crane,

To the lifting mechanism of which the power supply cable 8 is also permanently connected. Subsequently, with the help of a lifting bar, traverse 1 is constantly performed alone and

same operations: installation and removal of the upper and lower assembly boxes, the assembly boxes, their transportation from conveyors to knock-out grids and back.

In order to grip the flasks, using the proposed device, the electromechanical winch 7 is first turned on and the casing 6, being assembled into an accordion, is lifted to the extreme upper position by the ropes 11 (Figures 1 and 3). Chain slings 2 capture the flasks Ziustanavlivyatihna knock lattice 10.

The lifting beam 1 is slightly lowered with an overhead crane, loosening the tension of the chain slings 2 so that the vibrations from the knockout grids 10 are not transmitted to the overhead crane. Then include the winch 7 of the device and when unwinding the ropes 11 with the drums cover 6

under the action of its own weight, it goes down, covering the embossing grill 10 with flasks 3, until the lower edges of the casing are pressed into the base on which the embossing grill is installed. In this position, with the aid of the auxiliary device 14, the mechanism 7 for raising and lowering is automatically switched off.

The embossing grill 10 with the flasks 3 is sealed by the casing 6.

Turns on the ventilation suction, then the knockout grill 10 and the flasks of the flasks 3 are knocked out. After this process is finished, the ventilation is turned off, the winch 7 is turned on, and the casing 6 is raised to the extreme upper position. In this position, using the auxiliary device 14, the winch 7 is turned off, the bridge crane lifts the lifting beam 1 with the flasks 3 and transports them to their destination. Then, repeating the operation, install the next flask on the knock out grid.

Thus, with the help of the device, the molding of the flasks on the knock-out gratings is performed, without losing time for disconnecting

and the connection of load handling devices to flasks, increasing labor productivity, which is especially important in mass and large-scale production. At the same time, the quality of protection against the penetration of dust into the environment of a production room also significantly improves. The proposed device does not occupy additional space and cannot be damaged by the weight (flasks) installed on the embossing grid,

Claims (1)

Claims of knockout grids containing a casing and an electromechanical winch, characterized in that, in order to increase labor productivity and improve sanitary and hygienic working conditions, it is equipped with a traverse with a winch installed on it, the casing is made of heat-resistant dust-proof fabric, the upper edge of which is fixed on the traverse and the bottom edge is connected to the winch by means of a flexible link. Fie.2 eleven P 13 eleven Dust suction FIG.