Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
  • F16C13/02—Bearings
  • F16C13/04—Bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
  • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
  • F27B7/22—Rotary drums; Supports therefor
  • F27B7/2206—Bearing rings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
  • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
  • F27B7/22—Rotary drums; Supports therefor
  • F27B7/2206—Bearing rings
  • F27B2007/2213—Bearing rings mounted floatingly on the drum
  • F27B2007/2226—Bearing rings mounted floatingly on the drum the mounting comprising elements to maintain the ring between series of abutments

Definitions

• the invention relates to an arrangement for fastening a Laufrin ⁇ ring on the jacket of a rotary tube, in particular for rotary kilns and coolers, with a plurality of arranged on the jacket of the rotary tube race ring holders, consisting of mutually opposite abutments attached on both sides of the race, axially between the abutments guided, at least partially bridging the radial play between the race and the jacket, interchangeable, approximately T-shaped race shoes in profile and between the end faces of the race and one of these facing contact surfaces of the abutments and attached to the abutments holding elements for axial and radial fixation of the race shoes are provided with radially running bores for receiving bolts, pins or the like.
• Each holding segment has two of the radially inwardly directed projections which encompass the respective pair of race shoes on both sides in the circumferential direction, the width of each race shoe in the circumferential direction being less than the shortest distance between the abutment and the closest race holder in the circumferential direction.
• each holding segment In order to improve the securing of the race shoes in the radial direction, two radially running bores are provided in each holding segment, through which pins protrude which rest on the race shoes and press them onto the rotary tube.
• the race shoes are replaced in the following way: Both holding segments of a pair of running shoes are removed and the respective running shoes are moved tangentially up to the vicinity of the adjacent pair of running shoes. In this position, the race shoes no longer rest on the contact surfaces of the respective abutments and can therefore be pushed out in the axial direction. The insertion of new race shoes takes place in the reverse manner, with the holding segments finally being fastened by welding or the like.
• a disadvantage of this arrangement is that the holding elements for fixing the race shoes have to be connected to the abutments by welding. This welded connection must be broken to replace the race shoes and restored later.
• DE-PS 22 27412 shows an arrangement for mounting a race on the jacket of a rotary tube, the race being held in the axial direction by elements fastened to the side of the rotary tube jacket.
• Interchangeable bearing elements (race shoes) are provided between the race and the jacket of the rotary tube, which enable the race to move in the circumferential direction relative to the rotary tube jacket during operation.
• the bearing elements are inserted between the race and the rotating tube casing, the elements fastened on the rotating tube casing being designed as annular guide webs for lateral guidance of the bearing elements, at least one of which has a removable segment.
• the bearing elements essentially consist of rectangular sliding plates of approximately the same thickness.
• the sliding plates are pressed firmly against the jacket of the rotary kiln with the help of screws and springs and held in this position.
• the screws are loosened and the slide plates are pulled out laterally in the longitudinal direction of the rotary tube.
• the new plates are inserted from the side between the webs and the screws are tightened again, thereby pressing the new plates against the rotary tube jacket.
• the disadvantages of this arrangement are essentially due to the fact that on the one hand the sliding plates are only protected against slipping in the circumferential direction and axial migration by the contact pressure of the screws, and on the other hand the guide elements are circular in shape, so that the Ensure guidance of the race.
• the guide elements are welded to the support elements at various points.
• the object of the invention pursues the goal of realizing a releasable fastening of running ring shoes on rotating tube jackets, the running ring shoes arranged between the running ring and the rotating tube jacket being able to be replaced in a very short time without great effort and without having to move the extraordinarily heavy running ring and any weld seams disconnect and restore.
• each race shoe is designed as contact surfaces for support on the associated abutments, that the bolts protrude at least partially into corresponding bores in the associated race shoe, and that the radial gap between the race shoe and holding elements can be filled by spacing elements which interact with the bolts.
• An easily detachable fastening system which consists of four steel bolts and spacer elements secured by, for example, split pins, is used to prevent a change in position, which is mainly caused by the dead weight, against the direction of rotation, and to press the race shoes on.
• the spacer elements consist of washers and / or disc springs, lining plates or damping elements and fill the space required for assembly between the race shoes and the holding elements in order to ensure that the race shoes fit snugly on the rotary tube jacket.
• FIG. 4 - enlarged view of a fastener using a plate spring as a spacer
• Figure 5 Partial representation of a fastening element using lining sheets as a spacer
• Figure 6 Partial representation of a fastener using a damping element as a spacer.
• FIG. 7 - partial section through the rotary tube according to FIG. 1 Figures 1 and 2 each show an arrangement for fastening a race 1 on the casing 2 of a rotary tube 3.
• the arrangement has the following components: two opposing abutments 4, 5 each, one holding element 6 fastened to each abutment 4, 5 , 7, one between two abutments 4, 5 axially and in the circumferential direction guided race shoe 8. Only indicated in these figures are bolts 9 which are guided radially through the holding elements 6, 7 for radially fixing the race shoes 8.
• Each race shoe 8 has a T. -shaped profile and is provided with through holes 10 for receiving the bolts 9.
• the special type of fastening of the race shoes 8 can be seen in detail in FIGS. 3 to 6.
• Each race shoe 8 has in the region of its axially longer extension 11, 12 contact surfaces 13, 14, which come into contact with the associated surfaces 15, 16 of the abutments 4, 5 in the installed state.
• the disassembly / assembly of the race shoes 8 according to FIG. 1 is as follows:
• the holding elements 6.7 are arranged symmetrically to the abutments 4.5, i.e. the free ends 17, 18 and 19, 20 protrude evenly beyond the abutments 4, 5 in the circumferential direction.
• the bolts 9 must be removed.
• the bolts 9 of the race shoe 8' ' must also be removed and the latter pressed back in the circumferential direction.
• the race shoe 8 ' can be pulled out in the circumferential direction and pressed out axially between the abutments 4 or 5.
• a new race shoe 8 ' is installed in the reverse order.
• FIG. 2 shows a longitudinal section along line AA of FIG. 1.
• the following components can be seen: the race 1, the casing 2 of the rotary tube 3, the abutments 4, 5 in connection with the holding elements 6, 7, which are located between the end faces 21, 22 of the race 1 and the abutments 4.5 and are connected to the abutments 4.5 by welding.
• a running ring shoe 8 and the bolts 9 which pass radially through the holding elements 6, 7 and the running ring shoe 8 and thus fix them radially.
• FIGS. 4 to 6 show alternative possibilities for radially fixing the race shoe 8 with respect to the race ring 1.
• a washer 24 extends on the one hand and a plate spring 25 extends in the radial gap 23 between the race shoe 8 and the holding element 6.
• the through bore 10 in the race shoe 8 for receiving the bolt 9 can also be seen in this figure lockable after its displacement by means of a locking pin 26.
• Figure 5 shows an alternative to bridging the radial gap 23 lining plates 27, which can be pushed when the race shoe 8 is worn.
• FIG. 6 shows, as a further alternative to bridging the radial gap 23, a damping cushion formed from metal plates 28, 29 and a wire mesh arranged therebetween.
• FIG. 7 shows a partial section through the rotary tube 3 according to FIG. 1.
• the tube shell 2 the race 1
• an abutment 4 a holding element 6 and the region 11 of a race shoe 8, which is attached to the associated one, are shown End face 15 of the abutment 4 comes to rest.
• This system is reinforced due to the direction of rotation (see arrow) and the gap friction in the lower region of the race 1.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Muffle Furnaces And Rotary Kilns (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6418526

Family Applications (1)

Country Status (2)

Cited By (1)

Families Citing this family (1)

Citations (4)

• 1990
  • 1990-11-19 DE DE19904036796 patent/DE4036796C1/de not_active Expired - Lifetime
• 1991
  • 1991-07-13 WO PCT/EP1991/001315 patent/WO1992008939A1/de not_active Application Discontinuation

Patent Citations (4)

Also Published As

Similar Documents

Legal Events