RU2529116C1 - Liquid lubricant supply device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: liquid lubricant supply device consists of a hollow rod rigidly fixed on a gear shaft perpendicularly to the latter, the free end of the rod is equipped with a lubricant grasping bucket in the form of a box installed symmetrically relative to the rod rotation plane, with forward offset relative to the rod rotation direction. In the offset part of the box there is a filling hole oriented towards the shaft. The cavity of the box is connected to the rod plane, and by means of a radial groove the rod cavity is connected to a through axial channel made in the shaft and led to the cavities between covers and bearings.

EFFECT: providing for the lubrication of rolling bearings with blank covers at low-speed shafts of gear transmissions of reduction gears with oil baths, including shafts located higher relative to the oil baths.

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Description

The invention relates to mechanical engineering, in particular to lubricating devices, and can be used to lubricate the rolling bearings of low-speed gear shafts of gears with oil baths.

A device for supplying liquid lubricant for roller bearings of gear shafts with oil baths is known, which is a circulation system with forced supply of liquid lubricant from an oil bath through a pump - see, for example, “Applied mechanics: For students of technical schools / GB Iosilevich, P.A. Lebedev, V.S. Strelyaev. - M.: Mechanical Engineering, 1985. - 576 p., Ill. ", P. 466.

The disadvantage of this device is that it is difficult in design, so it is advisable to use it to lubricate the bearings of only critical components and assemblies - powerful high-speed gearboxes, high-frequency electric drives, etc. And for use for lubrication of bearings of non-responsible components and assemblies, for example, low-speed shafts of gears of general use, the use of such devices is not economically feasible.

As a prototype, the design of the device for lubricating the rolling bearings of the gearboxes, which is a blade sprinkler mounted on the transmission shaft near the lubricated bearing, is taken - see “Dunaev PF, Lelikov OP Machine parts. Course design: Textbook. allowance for machine building. specialist. technical schools. - M .: Higher. school, 1984. - 336 p., ill. ”, p. 132.

The disadvantage of the prototype is that at low speeds of rotation of the shaft, the sprayer is inoperative, in addition, this design is applicable only at a small distance from the oil bath into which the sprayer is immersed, to the lubricated bearing.

The invention solves the problem of lubrication of rolling bearings with blind covers and gearbox shafts of gears of gearboxes with oil baths, including shafts located high relative to oil baths.

A device for supplying liquid lubricant contains a lubricating device immersed in an oil bath, and the lubricating device is made in the form of a hollow rod, rigidly mounted on the transmission shaft, perpendicular to it; the free end of the rod is equipped with a lubricating bucket in the form of a box mounted symmetrically with respect to the plane of rotation of the rod, with an offset forward relative to the direction of rotation of the rod; in the displaced part of the box, a filling hole is made, oriented towards the shaft; the cavity of the box is connected to the plane of the rod, the cavity of which is connected by a radial groove with an axial channel made in the shaft; the cavity of which is connected by a radial groove with a through axial channel made in the shaft and brought into the cavity between the covers and bearings.

The invention is illustrated by the drawing, which shows: a device for supplying lubricant in the lower position of the lubricating device (figure 1); the same with the upper position of the lubricating device (figure 2). The drawing shows: gear housing 1, rolling bearing 2, shaft 3, upper level 4 of the oil bath, rod 5, cavity 6 of the rod, lubricating bucket 7, filler hole 8, axial channel 9 of shaft 3, radial groove 10, bearing cap 11, cavity 12, between the cover 11 and the bearing 9, the direction of rotation from the rod with grease bucket.

This device works as follows. When the shaft 3 rotates, the rod 5 rotates with it, with a lubricating bucket 7; when the bucket 7 is immersed in an oil bath, the lubricant through the filler hole 8 enters the cavity of the bucket 7; with further rotation of the shaft 3, the lubricant enters from the bucket 7 into the cavity 6 of the rod 5, and from there through the groove 10 into the axial channel 9; from the axial channel, the lubricant enters the strips 12 between the covers 11 and the bearings 2, from where it flows - through the gaps between the rolling elements of the bearing (balls or rollers) back into the gear housing - into the oil bath. With further rotation of the shaft, the lubrication process is repeated.

Compared with the prototype, the proposed design of a device for supplying liquid lubricant allows lubrication of bearings at low speeds of rotation of the shafts, as well as at large distances between the bearings and oil baths of the gearboxes.

Claims (1)

A device for supplying liquid lubricant, mainly for rolling bearings with blind covers for gear shafts of gearboxes with oil baths, containing a lubricating device immersed in an oil bath, characterized in that the lubricating device is made in the form of a hollow rod, rigidly mounted on the transmission shaft, perpendicular to it , the free end of the rod is equipped with a lubricating bucket in the form of a box mounted symmetrically with respect to the plane of rotation of the rod, with the relative displacement forward of rod rotation direction in an offset portion formed filler duct box facing towards the shaft; the cavity of the box is connected to the cavity of the rod, the cavity of which is connected by a radial groove with a through axial channel made in the shaft and brought into the cavity between the covers and bearings.

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