RU2547971C1 - Liquid lubricant supply device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: liquid lubricant supply device contains lubricant sprayer 4 made as box without top lid. The box 4 is secured on one arm 10 of the rocker 6 installed on hinge 7 inside the gearbox casing with possibility of movement in vertical plane. Cam 8 is installed on the driven shaft 9 and is located with possibility of periodic contact with the second arm 5 of the rocker 6. The rocker is equipped with spring 11 moving upward the arm 10 of the rocker with box after the arm 5 release of the cam 8 until the box top exit from the oil bath 2. The device is also equipped with the limiter 12 to limit upward movement of the arm 10 of the rocker 6. At place of the absent top lid of the box 4 a sprayer of the spayed lubricant 13 is installed in form of a mesh with size equal to size of this absent lid.

EFFECT: increased efficiency of the liquid lubricant supply to friction parts of the gearbox.

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Description

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

A device for supplying liquid lubricant is known, which is a sprinkler mounted on a drive shaft in the form of a wheel with blades periodically immersed in an oil bath - see, for example, Dunaev P.F., Lelikov O.P. The construction of components and machine parts: Textbook. allowance for machine building. specialist. technical schools. - 4th ed., Revised. and add. - M .: Higher. school, 1985 .-- 416 p., ill., p. 149.

The disadvantage of this device is the lack of efficiency of its work at low speeds of rotation of the gears, especially with large diameters of the wheels, as well as with frequent interruptions in the operation of the gearbox.

Closest to the invention is a device for supplying liquid lubricant according to the patent for the invention of the Russian Federation No. 2489624, class F16H 57/00, published on 08/10/2013, Bull. Number 22. Its essence is that in the gearbox with an oil bath a sprinkler is installed, periodically immersed in the bath; the sprinkler is made in the form of a box without a top cover mounted on one shoulder of a spring-loaded rocker arm mounted pivotally inside the gearbox with the possibility of movement in the vertical plane, the second arm of the rocker arm is made with the possibility of periodic contact with a cam mounted on the drive shaft and immersion of the box in the bath; the beam is equipped with a limiter for its vertical movement after the upper part of the box leaves the bath under the action of a spring.

The disadvantage of this device is that the grease ejected from the box (sprayer) - when it is braked by the box restrictor, is ejected from this box with a solid mass, which does not provide the necessary dispersion of the ejected grease for effective lubrication of the gearbox elements.

The invention solves the problem of increasing the efficiency of the supply of liquid lubricant to the friction elements of the gearbox.

This is achieved by the fact that inside the closed gear case with an oil bath, a grease sprayer is installed in the form of a box without a top cover mounted on one arm of a rocker arm mounted pivotally with the possibility of moving in a vertical plane with periodic forced immersion of the box in the oil bath by means of a cam mounted on the drive the shaft and periodically in contact with the other arm of the rocker arm, with subsequent forced movement by means of a spring of the arm of the rocker arm with the box up to Exit top box from the bath and the contact rocker with stop its movement, and on the spot missing box cover fastened thereon lubricant spray diffuser arranged in a grid pattern and having a size equal to the size of the missing caps.

The invention is illustrated by the drawing, which shows a device for supplying liquid lubricant (side view) - with the lower position of the sprayer (figure 1) and with the upper position of the sprayer (figure 2).

The drawing shows: housing 1 gear; oil bath 2; top level 3 oil bath; sprinkler (box) 4; the shoulder 5 of the rocker 6 with the box (4); hinge 7; cam 8; drive shaft 9; the second shoulder 10 of the rocker arm (6); spring 11; travel limiter 12; grease diffuser 13; distance h from the upper level (3) of the oil bath to the travel limiter (12); direction of rotation ω of the drive shaft (9); fluid lubrication direction V.

A device for supplying liquid lubricant is located inside the housing 1 of the gearbox with an oil bath 2 having an upper oil level 3, and is a box 4 without an upper cover, mounted on one arm (5) of the rocker arm 6, which is mounted on the hinge 7 with the possibility of its movement in vertical plane; a cam 8 mounted on the drive shaft 9 is arranged to periodically contact the second arm (10) of the rocker arm 6; the rocker arm is equipped with a spring 11 that moves the arm 10 of the rocker arm with the box 4 - after releasing the arm 5 from the action of the cam 8 - up to the exit of the top of the box from the oil bath 2, and is equipped with a limiter to move it up (12); in place of the missing upper cover of the box 4, a grease diffuser 13 is installed in the form of a mesh having a size equal to the size of this missing cover.

This device operates to supply liquid lubricant as follows. During rotation (ω) of the drive shaft 9, the cam 8 mounted on it periodically contacts the shoulder 5 of the rocker arm 6, lifting it up; while the beam mounted on the hinge 7 is rotated and its second shoulder (10) with the box 4 is lowered down, while the box is immersed in an oil bath 2 and filled with liquid lubricant. Upon the termination of the contact of the cam 8 with the arm 5 of the rocker arm 6, under the influence of the spring 11, the arm 10 of the rocker arm with the box 4 is thrown up to the contact of the arm 10 with the limiter of its movement 12. There is a sharp braking of the box 4 and the liquid lubricant captured by the box from the oil bath is ejected from the box up (in the V direction) to the gearbox elements to be lubricated. The diffuser (grid) of lubricant 13, located on the site of the missing top cover of the box, allows for uniform distribution of the grease ejected from the box over the entire volume of the gearbox.

Compared with the prototype, the proposed design of the device allows to increase the efficiency of supplying liquid lubricant to the friction elements of the gearbox, thereby improving their lubrication, increasing their wear resistance and durability.

Claims (1)

A device for supplying liquid lubricant, mainly a closed gear reducer with an oil bath, containing a lubricant sprinkler in the form of a box without a top cover mounted on one arm of the rocker arm mounted pivotally inside the gearbox with the possibility of moving in the vertical plane and periodically forcing the box into the oil bath by cam mounted on the drive shaft and periodically in contact with the other arm of the rocker arm, followed by forced movement in the middle by means of the spring of the arm of the rocker arm with the box up to the top of the box from the bath and the rocker arm in contact with the limiter of its movement, characterized in that in place of the missing box cover a diffuser of sprayed grease is made on it, made in the form of a mesh and having a size equal to the size of this missing cover .

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