DE1450062A1 - Drum for belt conveyor, winches or the like. - Google Patents

Description

H5006 I.

The invention relates to a special design of the end walls of welded drums for belt conveyors, ÜTinden or the like.

Drums are already known whose end walls are made of cast steel or Stan! exist, in which the end walls are connected to the axis or shaft by clamping elements. The end walls are designed in such a way that their thickness from _β a certain radial distance from the bore undergoes a gradual tapering up to "close to the outer diameter this design requires large drum diameters. It was also proposed in the case of C.-urttrummeln that the iest connection between the StinivTa-id bore of the drum and the "eile or Acij.se" should be as small as possible from the center line of the drum shaft or - »arrange the axis in order to achieve an increased elasticity of the end walls.

The end wall bores are fixed with an I on the shaft subordinate Eabe or with one carved out of the shaft Flensch-like reinforcement disappears. " In many applications, especially drums, can however, the welding between the end v / ajid bore and! flange can only be done by welding beads placed on one side. This results in welding distortion stresses, some of which are directed radially is. This radially directed Sxjsnnungsomponent can r. can reach very high values, but it will be reached with rotating, ___ ^

309822/0270

145D062

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loaded drums reinforced by the also radially directed bending coil stresses. Already through

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the welded joint a radially directed component of the welding distortion stress occurs, the permissible Size for the radially directed alternating bending stress of a loaded, rotating drum are restricted. These Limitation of the permissible alternating bending stress represents a essential. Specialist part for the construction of such drums.

The present invention is therefore based on the object the - elasticity of the end walls of drums significantly. increase and'the use of welded drums-also at. large drum length and high loads. .

The purpose of the invention is to increase the load capacity of the welded To increase drums while at the same time securing the service life,,. .

According to the invention, this is done in that the end walls, in the case of drums, are given special training. In one, to a certain extent, of the inner bore of the end wall becomes the end wall _; - Thickness reduced by a gradual transition within a short radial distance. This reduction can be provided continuously up to the outer diameter, it · is., But. a.ucffmOglicKj '^ in'der fähedes outer diameter the end walls - ■ wiedö'fum'durlih ^ älmählichen transition to "reinforce again". The advantage of this special design is that the radially directed components of the welding distortion stress and the bending

ORiGIfMAi

• U50062

AC voltage "when" loaded, rotating drum is not more at the point of the fixed connection between the front wall break and skin or axles or the firmly attached labe occur, but are introduced where the end walls have a reduced thickness. The I.iaximal values of the

pennungen are thus out of the annular weld zone in an adjacent annular zone displaced, in which the material has ten its unreduced strength properties sheep, f'omit can elle or JLchse in drums much higher deflection of the ^ T ^r are thus allowed a higher load . On the other hand, it is possible to significantly reduce the drum diameter with the same load.

The following is an example of the invention on the basis of a Drawing will be explained. It shows:

Fig. 1: a partial longitudinal section through a belt drum

In the drawing, a Gurttrom ^ el in the case of pruning shown szustsnd _f being the deflection of the tube axis has been particularly made strongly visible. 3 The Hohrachse 3 f eus a Kohr 1 and from two JLchszapfen 2, which are welded to the tube by üine Eundnah-b. A groove 4 is screwed into each of the "two axle journals 2 so that two flange-like rings 5 are produced. The inside diameter of the end walls 6 corresponds to the outside diameter of the flange-like ring 5.

Between the end wall 6 and the Rii ^ g ^! - "■ Iteeteht. In each case there are welded joints 7. At a certain radial distance between the welded joints 7, the original thickness of the end walls 6 is reduced by a gradual transition within a short radial distance ν - the size of the certain radial distance for the stronger formation of the end walls must be provided, depending on the zone of influence of the welded joint.

The reduced thickness of the end walls 6 remains in the radial direction up to close to the outer diameter of the end walls 6 and then increases in a gradual transition back to the original thickness. '' Vie from the drawing it can be seen _f are radially directed from the Spannungskompitnenterl 6chv? Eißverbindung 7 displaced. You are now working! according to the principle _s that a very specific tension also corresponds to a very precise deformation, at the point; at which the tapering of the forehead »wall thick © begins /. ''

Claims (2)

P.A. 783 453 - 6.11.64 U50062 Palent claims: 1. iToaunel jlüp belt conveyor, bind ο., Like., In which the Btirnwandbohrunsen the drum are firmly connected to the shaft or axis, characterized in that the end walls (6) at a certain radial distance from the test connections (7) through a gradual transition within a "-. 'arsenic decreased radial distance obtained andstärksn to suir Außenuurchmesser _o facilitated permanent //. 2. üii'Oi-D-el according to claim 1, dac.u_-ch o®kennz eic line t that The thickness of the front wall in the vicinity of the outer endur clime sser. der ^ ui'-i'nvä,: ide (6) again a gradual "reinforcement to approximately the strength of the inner ring -'- experienced 909822/0270 L e r s e i t €