FI76940B - INSPAENNINGSANORDNING FOER EN SLUTSKIVA. - Google Patents

Description

76940

Tightening device for closing plate

Separated from Patent Application No. 831462.

5

The invention relates to a clamping device for a closing plate, e.g. a ceramic closing plate for a countersunk hole of a container containing molten metal in a sliding barrier, in which the clamping device the tightening plate can be clamped to the support frame by means of at least 10 metal sheaths surrounding its circumference.

The baffles of the refractory material of the sliding closures for the drain hole of the container containing molten metal have hitherto been plastered in the support frame. The labor costs of performing and replacing the plasterboard are very high. A similar tightening device is known from DE-AD 28 21 839, in which the closing plate is fixed to the support frame by means of a surrounding casing instead of plaster and by means of removable eccentric devices acting on the casing. For example, a shrink-wrapped sheath on top of the slab serves to hold the tile material together if cracks occur in the material due to the significant temperature variation requirements of the manufacture. However, due in part to the considerable shrinkage of the barrier plate material, e.g., the ZrCl 2 slab, the shrinkage of the sheath is not sufficient to effectively tighten the sheet material 25 in all cases. There is a risk that either the casing is too loose or due to excessive shrinkage of the casing, the slab will bend, making post-sanding of the sealing and sealing surfaces necessary. The choice of a sheath 30 and a closure plate which match exactly in terms of their external dimensions is too high, and the dimensionally accurate manufacture of the locking plate is too expensive.

The object of the present invention is therefore to provide a tensioning device of the type mentioned in the introduction, so that even for larger dimensional differences between the plates and sheaths 35 it is possible to simplify the plastering device without plaster and to fasten the closing plate and sheath to the support frame without tolerances.

This object is essentially solved in that the casing 5 is formed as a narrow tightening rim with at least one clamping lock, the clamping lock having clamping lugs which fit only in their tightened position, preferably due to their closing shape and / or closing force, into corresponding grooves in the support frames. The Ki-10 cross-lock thus performs both the desired prestressing of the casing as well as the fastening of the closing plate and the casing to the support frame.

For example, the tension lock may comprise interlocking Tightening lugs attached to the head of each tensioning strap to apply a certain force to the tensioning strap from an open position to a tightened position.

Due to the fact that the clamping lugs only fit in their tightened position in the corresponding grooves of the support frame, and preferably due to their closing shape and / or closing force, the closing plate is simply and reliably attached to the correct position in the support frame. with respect to the support frame. Preferably, the clamping lugs are, e.g. In this way, the dimensional differences around the slab circumference can be smoothed out, which in their tightened position lead to gaps between the tightening lugs 30 of different sizes.

To facilitate the movement of the tightening lock, the tightening lugs of the tightening lock are connected to each other by means of a screw adjusting their distance.

However, it is particularly advantageous when the clamping lugs 35, after being joined to the clamping position, are welded together. The tightening force can advantageously be exploited in the circumferential direction, since the point of contact of the force can be applied immediately to the circumference of the slab.

There may be a lubricant, e.g. graphite-5 film or ceramic fiber, between the tensioning rim and the locking plate to reverse the tensioning force.

Particular advantages of the solution according to the invention are that the slab and / or sheath tolerances for slab tensioning are insignificant, the clamping forces in the slab can also be kept constant for shrinkage of different slab materials, removal is infinitely safe and simple. The sheath may be substantially relatively loose around the barrier plate or loosely mounted on the barrier plate in the finished metal sheath in the support frame. It is not necessary to finish the perimeter of the disc. Because the sheath is only similar in shape to the tension rim surrounding the slab, the slab is easily pivotable in the support frame. The locking plate of a linear non-slip lock generally has two substantially semicircularly rounded end portions and two substantially parallel longitudinal sides.

Outside the rounded end portions, the tensioning strap may be connected to outwardly extending, e.g. wedge-like, longitudinal sides or portions of the longitudinal side of the outer circumference of the closing plate, by means of which the tightening efficiency can be further improved.

The shutter-plate with its tensioning straps can be tightened in the longitudinal direction to the support frame, e.g. by means of an eccentric, a tightening screw, a wedge, a compensator or the like.

The invention will now be described with reference to the accompanying drawings, in which Figure 1 shows a view of a linear sliding barrier support frame with sliding plates according to an embodiment of the invention, and Figures 2a-2c show different types of tightening holes for the clamping rim of Figure 1.

Figure 1 shows a passage opening 11 arranged in a support frame or sliding plate 1 in a support frame 2 for a linear sliding barrier. is a clamping lug 15 and 16, respectively. The clamping lugs 15, 16 are tightened according to Fig. 2a with, for example, a hexagon socket screw 19 and a left and right threaded wool 20 according to Fig. 2b, which can be turned with a hexagon nut 21. According to an exemplary embodiment of the clamp 16 is tightened together in a separate tightening device and then welded together. In the locked state 20, the clamping lugs 15, 16 fit into the corresponding notches 17 of the support frame 2, because the dimensions, L2 and are of a certain size.

Since the gap between the two clamping lugs 15, 16, under the same clamping force, depends on the different circumferences of the outer circumference of the locking plate 1, the clamping lugs 15, 16 can have different outer dimensions in their tightened position. 2a ~ 2c with a slash until the tightening lock 30 8 fits into the corresponding notch 17.

The metal sheath of the tightening device according to Figures 1 and 2 can already be tightened in a plant for the manufacture of refractory parts.

The invention is not only intended for a straight, also for a turntable.

Claims (7)

Clamping device for a closing plate, e.g. a ceramic closing plate, for sliding a container containing molten metal in a non-slip closure, in which the clamping device (1) can be clamped to the support frame (2) at least by means of a metal sheath (14) surrounding its circumference, characterized in is formed as a narrow clamping rim (14) with at least one clamping lock (8), the clamping lock having clamping lugs (15, 16) which fit only in their clamped position, preferably due to their closing shape and / or closing force, into the corresponding grooves (17) of the support frames (17). ). Device according to claim 1, characterized in that the clamping lock (8) comprises two clamping lugs (15, 16) movable from the open position to the clamped position attached to the end of each clamping rim to transmit a certain force to the clamping rim (14). Device according to Claim 1 or 2, characterized in that the clamping lugs (15, 16) are finished, for example after post-joining, in a tightened position for fitting into the grooves (17), in particular their outer side surfaces, e.g. Device according to one of Claims 2 to 3, characterized in that the clamping lugs (15, 16) of the clamping lock (8) are connected to one another by means of a screw bolt (19, 20) which adjusts their distance between them. Device according to one of the preceding claims, characterized in that the clamping lugs (15, 16) are welded together after being connected to the clamped position. 5,76940 Device according to one of the preceding claims, characterized in that there is a lubricant, e.g. of graphite film or ceramic fiber, between the clamping rim (14) 76940 and the outer circumference of the closing plate (1). Device according to one of the preceding claims, wherein the outer circumference of the closing plate has two substantially semicircularly rounded end sides for a linear slide, characterized in that the clamping strap (14) is located outside the rounded end sides of the longitudinal sides of the outer circumference of the closing plate (1). 7 76940