DE3320236A1 - Rotary drum - Google Patents

Abstract

The internally toothed running ring (3) is supported on the casing (1) of the rotary drum by bearing plates (2) which are braced against the running ring teeth (4) by two wedges (6) abutting its long sides (2c, 2d). These long sides (2c, 2d) of the bearing plates run mutually parallel and at right angles to the central plane (3a) of the running ring, while the running ring teeth (4) are positioned obliquely at the wedge angle ( alpha ) relative to the running ring axis (3b). This leads to relatively simple manufacture, especially of the bearing plates. <IMAGE>

Description

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Rotary drum

The invention relates to a rotary drum with an internally toothed raceway, according to the preamble of claim 1.

Rotary drums of the type mentioned are in particular rotary kilns, drying drums, Cooling drums and the like, such as those used, for example, for treating bulk materials, in particular also for exchanging heat between Find bulk materials and gases use. At least one is supported on the drum shell internally toothed raceway over the base plates, while the rotary drum as a whole is over the race or the races are supported on support rollers. The production boards are on theirs ends axially protruding from the race are welded to the drum shell and stand over their Long sides located below the raceway as well as via wedges arranged there mesh with the teeth distributed on the inner peripheral side of the raceway. In this way each washer is clamped to the raceway in the circumferential direction by two wedges, whereby the Grip the wedges on the two sloping long sides of the production boards. One Such an embodiment is known from DE-GM 70 12 057, for example.

The invention is now based on the object of a rotary drum in the preamble of

, '. Claim 1 required type the area

/ the wedge bracing and the base plates, especially in terms of production technology

-: to further simplify.

) This object is achieved according to the invention by the

* specified in the identifier of claim 1

J features solved.

; While it is known in the case of the above

I needed to run that with the wedges

cooperating long sides of the underlay

I plates of the wedge inclination or the wedge angle

ί to fit, making these production boards

■ are difficult to manufacture, the companies

J "facing plates according to the present invention

i parallel to each other and at right angles to the running ; ■■ 'ring center plane running long sides, the

{a considerably simplified production with

Bring, since the exact compliance with the

: the variance associated with the respective wedge angle

There are no problems whatsoever. To still with

! ■ the drum according to the invention from the execution

; Tension wedges between the long sides of the

Ji production plates and the associated running

ϊ being able to securely fix ring teeth is sufficient

-: it is only, these race teeth around the wedge

i angle with respect to the raceway axis obliquely to " place.

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The invention is hereinafter based on an embodiment illustrated in the drawing

game explained in more detail.

The single drawing figure, which is kept largely schematic, shows a partial top view the rotary drum in the area of a base plate.

Of the rotary drum itself, only part of its drum shell is essentially in the drawing 1 illustrates in plan view on which a base plate 2 is attached. on the The circumference of the drum shell 1 is - as is known per se - a large number of such production plates arranged distributed from one another at substantially the same intervals. These production boards 2 serve to support what is only indicated by dash-dotted lines for the sake of clarity Race 3, on the inner circumferential side - teeth evenly distributed in the circumferential direction 4 are firmly arranged.

Every. Peripheral plate 2 protrudes with axial end sections 2a, 2b, on both sides of the raceway 3 by such a piece axially that with the help of a weld 5 in the area these end sections 2a, 2b can be reliably attached to the drum shell 1.

In the circumferential direction of the rotary drum, each base plate 2 is in. By means of two wedges 6 Tensioned with respect to the race 3, in that these two wedges 6 on the two longitudinal sides

ι th 2c and 2d on the one hand and these long sides 2c, 2d attack opposite longitudinal flanks 4a of the teeth 4 on the other hand.

So that the sole plates 2 ratio'mäßig can be prepared simply extend their longitudinal sides 2c and 2d in parallel _(to-each other and perpendicular to the raceway center plane 3a. Designate the base plates 2, thus seated at least in the region below the bearing ring 3 a rectangular Shape; only the end sections 2a, 2b protruding axially with respect to the race. 3 can be made somewhat narrower so that the ends of the wedges 6 are more easily accessible.

As can also clearly be seen from the drawing, the raceway teeth 4 are around the wedge angle oC with respect to the raceway axis 3b (which, as is well known, with the longitudinal axis of the rotary drum

• collapses) inclined. This can be done in a simple manner during the manufacture of the raceway 3 Way can be achieved in that the teeth 4 either in one piece on the inner peripheral side * of the race 3 worked out (for example in the case of a cast piece to be produced as a whole) or that the teeth 4 are individually manufactured and attached as rectangular, elongated blocks attached to the inner peripheral side of the race 3, preferably welded.

To the race 3 at its end faces 3c and 3d

-rf -

To additionally secure in the axial direction, corresponding fastening elements Ί can be welded onto the base plate end sections 2a and 2b in a manner known per se (see drawing), which loosely engage with the running ring end faces 3c and 3d facing them.

Claims (3)

Patent claims: Rotary drum with internally toothed race, which is placed on the The drum shell is supported, with each base plate by two on the two long sides the wedges adjacent to the base plate are braced in the circumferential direction, characterized by the following features: a) the support plates (2) are parallel to each other and at right angles to the middle plane of the raceway (3a) running long sides (2c, 2d); b). the raceway teeth (4) are inclined by the wedge angle ( oC) with respect to the raceway axis (3b). 2. Rotary drum according to claim 1, characterized in that that the running ring teeth (4) are integral with the inner circumferential side of the running ring (3) are worked out. 3. Rotary drum according to claim 1, characterized in that the raceway teeth (4) as rectangular, elongated blocks manufactured individually and on the inner circumferential side of the race (3) attached, preferably welded.