DE575996C - Roller bearings, especially for kiln cars - Google Patents

Description

Roller bearings, especially for kiln trolleys For the kiln trolley bearings It is well known that tunnel kilns have extraordinary difficulties, than during the passage of the car through the 'furnace the lubricant, oil or Fat burns as a result of the action of heat, leaving a solid carbonized oil residue remains, which makes the run of the car extremely difficult, with the roles as well as the bearing raceway wear out heavily and become unusable. Also arise at the same time very significant maintenance and repair costs.

These disadvantages arise in particular when the bearings are arranged in the wheel center, the bearing pressure of the axle attached to the carriage on the rollers and is exerted on the running surface of the bearing body downwards. The Oil residues or the fine metal particles that arise during wear and tear, wedged between the tread and the rollers, causing greater wear and leads to skewing of the rollers in the case of worn-out running surfaces; through which the side thrust bearings are heavily used. The wheels become after a short time Operating time pressed outwards by the inclination of the rollers, so that this the wagons in the tunnel kiln may be derailed.

The abovementioned inconveniences are less likely to occur when arranging on the car arranged roller bearings, in which the axle with the attached wheels rotates, the bearing pressure being exerted on the upper running surface of the bearing body and In addition, the top roller is always pressed into a position parallel to the axis. The oil residues or the fine metal particles migrate downwards, whereby into the small space between the lower bearing surface and the rollers arrive so that there is no pressure on the running surface of the bearing body at this point is exercised.

According to the present invention, however, the above-mentioned inconveniences become complete avoided if according to the invention in the lower part of the bearing body cleaning openings or with such provided recesses, grooves o. The like. Are attached by the carbonized oil residues and the fine iron particles that result from wear and tear to the outside immediately, so that the tread remains smooth and clean and an unhindered run of the car is guaranteed.

There are already known roller bearings that have on their lower side a large lubrication opening are provided, with the rollers completely downwards exposed. However, these known bearings have the major disadvantage that they very easily contaminated by penetrating dust, sand or similar foreign bodies or be damaged. They can therefore only be used with lubrication and are therefore for the kiln operation as a result of the prevailing in the kilns high temperatures that are common do not allow lubrication, as the lubricants would burn too often, not suitable.

In the drawing, embodiments of the device according to the Invention shown. Fig. I shows a vertical cross-section along the line A-B of Fig. 2; the latter shows a vertical longitudinal section along the line C-D of Fig. I.

Fig.3 is a horizontal cross-section along the line E-F of Fig. i.

Fig. Q., 5 and 6 each show a modified embodiment of the device according to the invention according to Fig. x.

Figures 7 and 8 show the corresponding longitudinal section through the modified one Embodiment of the device according to Fig. Q. and 5.

Fig. G and = o are horizontal cross-sections through the modified Embodiment according to the line E-F of Fig. I.

For removing charred oil residues and fine metal particles, The bearing body a is caused by wear and tear during operation its underside with a larger number of openings distributed along its length k provided so that the tread always remains smooth and no premature destruction enters the storage area.

Instead of the cleaning openings k, the lower running surface of the Bearing body can also be provided with recesses, grooves or the like k1 (Fig. Q.). To the Removal of the oil residues and iron filings that have accumulated in the recesses or the like or the like are expedient both in the side wall a, (Fig.2) of the bearing body as well as cleaning openings opening onto the recesses in the end plates n (Fig. 7). However, cleaning openings o (Fig. 8) can also be found on the floor the recesses o. The like. Be provided. The recesses are also useful k1 interrupted by webs P (Fig. io), which are provided with cleaning openings q (Fig. 5) are.

The roller bearing according to the invention can advantageously be used without be used by lubricating oils or other lubricants.

Claims (3)

PATENT CLAIMS: i. Roller bearings, especially for kiln cars, characterized in that the bearing body (a) has openings in its lower part (k) or or and recesses, grooves or the like. (k1) is provided. 2. Roller bearings according to claim i, characterized in that the recesses or the like by webs (P) are interrupted. 3. Roller bearing according to claim i and 2, characterized in that that in the webs (P) cleaning openings (q) are arranged, which the grooves (k1) and the like. Connect to each other. q .. roller bearing according to claim i to 3, characterized in that that the cleaning openings (k) or recesses o. The like. (k1) in several rows are arranged. 5. Roller bearing according to claim i to q., Characterized in that that the cleaning openings (k) or recesses according to claim 2 and 3 in parallel Rows and staggered.