RU2480653C1 - Lubricating oil supply device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: lubricating oil supply device of a reduction gear having housing (1) and oil bath (2) consists of a sprayer made in the form of box (4) without a top cover plate, which is fixed on one end of spring-loaded bracket (6) installed inside the housing with hinges with possibility of being moved in a vertical plane. The other end (10) of the bracket periodically contacts cam (11) fixed on drive shaft (12). Walls (13) of the box, which are oriented along the bracket, are located vertically. Walls (14, 15) of the box, which are oriented perpendicular to that bracket, are located along the arcs described with upper ribs of those walls. The bracket is equipped with limit stop (9) of its vertical movement after the top part of the box leaves the bath.

EFFECT: improving lubricating oil supply efficiency.

2 dwg

Description

The invention relates to mechanical engineering and can be used to lubricate closed gear reducers with oil baths, mainly low-speed, with large diameter wheels.

A device for supplying liquid grease is known, which is a sprinkler mounted on a drive shaft in the form of a wheel with blades immersed in an oil bath (see, for example, Dunaev P.F., Lelikov O. P. Design of machine components and parts: Textbook for mechanical engineering special universities. - 4th ed., revised and enlarged - M .: Higher school, 1985-416 pp., ill., p. 149).

The disadvantage of this device is its lack of effectiveness in low-speed modes of gears, especially with large diameters of the gears, as well as with frequent interruptions in their work.

Closest to the invention is a device for supplying liquid lubricant according to A.S. USSR No. 1146508, class F16H 57/4, published on 03/23/83, B.I. No. 11. Its essence is that in the gearbox with an oil bath a cam is mounted on the drive shaft, which during rotation periodically interacts with an elastic plate mounted inside on the gearbox housing and immersed in the oil bath.

The disadvantage of this device is that the flat plate captures an insufficient amount of grease, in addition, the amount of grease located above the plate immersed in the bath is not completely supplied from the bath to the lubrication zone: when the plate moves upward, part of this lubricant is thrown back to the side - back into the bath, while mixing the lubricant located in the bath, stirring it up, mixing with sediment and wear products of the friction elements of the gear train and contaminating the entire volume of the lubricant located minutes in an oil bath and pollution, respectively, grease supplied to the lubrication zone device. This reduces the efficiency of the device and impairs the lubrication process of the gear elements.

The invention solves the problem of increasing the efficiency of the supply of liquid lubricant.

This is achieved by the fact that the device for supplying liquid lubricant to a closed gear reducer with an oil bath contains a spring-loaded sprayer, periodically immersed in the oil bath by means of a cam located on the drive shaft, the sprayer is made in the form of a box without a top cover mounted on one end of the spring-loaded bracket installed inside the gear housing pivotally movable in a vertical plane, the second end of the bracket is made with the possibility of periodic contact ia with the cam and immersion in the bath, and the walls of the box, oriented along the bracket, are located vertically; its walls, oriented perpendicular to the bracket, are located along arcs described by the lower edges of these walls, and the bracket is equipped with a limiter for its vertical movement after the upper part of the box exits the bathtub.

The invention is illustrated by drawings, which shows a device for supplying liquid lubricant: at the lower position of the sprayer (figure 1), with the upper position of the sprayer (figure 2).

A device for supplying liquid lubricant for a closed gearbox having a housing 1 and an oil bath 2 with an upper level of lubricant (3), consists of a sprinkler made in the form of a box 4 without a top cover, mounted on one end of a spring-loaded (5) bracket 6 mounted inside hinged housing (7) with the ability to move in a vertical plane; this end is provided with a protrusion 8, in contact in the upper position with a stop 9, mounted on the housing 1 of the gearbox; the second end (10) of the bracket is made with the possibility of periodic contact with the cam 11 mounted on the drive shaft 12; the walls 13 of the box 4, oriented along the bracket 6, are located vertically, and its walls (14 and 15), oriented perpendicular to this bracket, are located along the arcs described by the upper edges of these walls; the stop 9 is installed to ensure the upper position of the duct 4 with an excess (h) over the upper level (3) of lubrication of the gearbox oil bath.

This device works as follows. The cam 11 mounted on the drive shaft 12 periodically contacts one (10) end of the bracket, while the other end (6) of the bracket goes down, immersing the box 4 in the oil bath 2, the box is filled with grease. With a further rotation (ω) of the drive shaft 12, the contact of the cam 11 with the end 10 of the bracket is interrupted, and the box 4, filled with grease under the action of the spring 5, is thrown up; at the upper point of the trajectory, when exceeding (h) the top of the box 4 above the upper level (3) of the oil bath lubrication, the protrusion of the bracket 8 hits the stop 9, and the grease collected by the box is thrown up (V) to the lubricated gear elements. Then the process is repeated.

Compared with the prototype, this design of the device for supplying liquid lubricant allows you to capture more lubricant; the arrangement of the longitudinal walls of the box vertically, and its horizontal walls in arcs contributes to less mixing and agitation of the lubricant in the oil bath; ensuring that the top of the box is higher than the upper level of lubrication in the oil bath — at the moment the grease is ejected from the box — it also improves the supply of grease by reducing feed losses and reduces mixing and agitation of grease in the bath. All this as a whole increases the efficiency of the lubricant supply, improves the lubrication of the gear elements, reduces their wear and increases their durability.

Claims (1)

A device for supplying liquid lubricant, mainly a closed gear reducer with an oil bath, containing a spring-loaded sprayer, periodically immersed in the bath by means of a cam mounted on the drive shaft, characterized in that the sprayer is made in the form of a box without a top cover mounted on one end of the spring-loaded bracket, mounted inside the hinge gearbox with the ability to move in a vertical plane, the second end of the bracket is made with the possibility of periodic timing cam and immersion in the bath, the duct walls oriented along the bracket arranged vertically; its walls, oriented perpendicular to this bracket, are located along arcs described by the upper edges of these walls, and the bracket is equipped with a limiter for its vertical movement after the upper part of the box exits the bathtub.

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