UA131745U - DEVICE FOR SPINDLE LUBRICATION WITH SLIDING BEARING SUPPORT - Google Patents

Abstract

The device for lubrication of the spindle with support on the sliding bearing contains a sealing pad installed to interact with the lubricating part of the spindle. The sealing pad is placed in the bores of the housing and the insert of the sliding bearing, and is made with a through cavity and is equipped with a spring-loaded plunger mounted movably in the cavity of the pad and the bore of the bearing cover. The oil intake hole of the plunger is brought to its end with the possibility of contact with the oil intake part of the spindle body, and is connected to the lubrication line through the boring of the bearing housing.

Description

The useful model belongs to the lubrication equipment and can be used for lubrication of rotating units, in particular universal spindles of rolling mills.

A well-known device for lubricating the spindle with support on a sliding bearing, containing a stationary bearing housing with seals, which is included in the spindle balancing system, with an opening for supplying plastic lubricant (A.A. Korolev, Construction and calculation of rolling mill machines and mechanisms. - M. , 1969. - p. 194).

When the spindle joints are periodically lubricated, the grease is fed into the sliding bearing housing of the spindle balancing system, lubricates the sliding bearing itself and creates an excess lubricant pressure in the bearing cavity due to the presence of seals in the housing, as a result of which the lubricant enters the spindle joints through channels.

A positive feature of the known design is that one plastic lubricant supply system is used to lubricate the spindle hinges and the sliding bearing of the spindle support.

Disadvantages of the known design (analog): as the bearing housing seals wear out, the lubricant pressure in the spindle channels decreases and then the lubricant stops flowing into the spindle hinges and exits into the gaps of the housing seals onto the spindle body, following the line of least resistance; the connection of the lubrication line to all lubrication points at once leads to the fact that the lubricant in excess enters the point with a small resistance to the flow of lubricant, and may not enter the points with the greatest resistance at all; the low reliability of the sealing elements is due to their non-opening. The working time of the seals is much longer than the working cycle time of the lubricant, which leads to their premature wear.

As the closest analogue, the well-known design of the spindle lubrication device (U.S.S.R. Mo. 280134), containing a sealing block made in the form of a sector and installed with the possibility of interaction with the grease-receiving part of the spindle, containing channels with valves, is adopted. When applying lubricant to the sealing pad, the latter is pressed against the body of the spindle, while the specific pressure created on its edges does not allow the lubricant to spread over the body of the spindle and the lubricant enters the hinges of the spindles through channels equipped with

With non-return valves.

The advantage of the known technical solution is the elimination of all the above-mentioned disadvantages that apply to the analogue, however, the disadvantage of the prototype is that at the end of the lubrication cycle, when the pressure of pressing the pad against the spindle body decreases, lubricant leaks from under the pad due to the elastic properties of lubricants. Leaked grease is not used anywhere, but only contaminates the surrounding equipment.

The purpose of the useful model is to increase the reliability of the device and reduce the cost.

This problem is solved due to the technical result, which consists in reducing operating costs for lubricants and an additional lubrication system due to the use of lubricant leaks from the supply to the spindle joints and their use for lubrication of the sliding bearing of the spindle support.

The task is solved by the fact that in the device for lubricating the spindle with a support on a sliding bearing, which contains a sealing pad installed with the possibility of interaction with the grease-receiving part of the spindle, according to a useful model, the sealing pad is placed in the bores of the body and the insert of the sliding bearing, and is made of with a through cavity and equipped with a spring-loaded plunger, movably installed in the cavity of the pad and bore of the bearing cover, while the lubricant-receiving hole of the plunger is brought out on its end with the possibility of contact with the lubricant-receiving part of the spindle body, and is connected to the lubrication line through the bore of the bearing housing.

As a result of a comparative analysis of the proposed device for lubricating the spindle with support on a sliding bearing with the prototype, it was established that they have the following common features: a sealing pad installed with the possibility of interaction with the grease-receiving part of the spindle, as well as distinctive features: the sealing pad is placed in the bores of the housing and the insert sliding bearing, and made with a through cavity; the sealing pad is equipped with a spring-loaded plunger installed movably in the cavity of the pad and the bore of the bearing cover;

the lubricant-receiving hole of the plunger is located on its end with the possibility of contact with the lubricant-receiving part of the spindle body, and is connected to the lubrication line through the bore of the bearing housing

Thus, the design of the installation has a new structural design of nodes and parts, new connections of nodes and parts, as well as a new placement of them relative to each other.

There is a cause and effect relationship between distinctive features and the technical result that is achieved.

Due to the fact that the sealing pad is located in the borings of the housing and the insert of the sliding bearing, it became possible to place the pad in the sliding bearing while ensuring a single cylindrical working surface of the bearing.

Due to the fact that the block is made with a through cavity and is equipped with a spring-loaded plunger, installed movably in the cavity of the block and the bore of the bearing cover, while the grease-receiving hole of the plunger is brought out on its end with the possibility of contact with the grease-receiving part of the spindle body, and is connected to the lubrication line through the bore of the housing bearing, it became possible to form a cavity in the sealing pad during the supply of lubricant, through which the lubricant enters the channels of the lubrication points, which alternately pass through the cavity in the sealing pad.

Exclusion of at least one of them from the above set of distinguishing features does not ensure the achievement of a technical result.

The claimed technical solution is not known from the prior art and is therefore novel.

The claimed technical solution is industrially applied, because its technological and technical implementation does not present any difficulties. According to this technical solution, the design of the device for lubricating the spindle with a support on a sliding bearing for the metalworking plant in the city of

Mariupol

Thus, the technical solution that is claimed can be presented with legal protection, because it is new and industrially applied, that is, it meets the criteria of a utility model.

A useful model is explained by drawings that show:

Fig. 1.- Device for lubricating the spindle with support on a sliding bearing (general view);

Fig. 2.-А-А according to Fig. 1;

From Fig. 3. - B in fig. 2.

The device for lubricating the spindle with a support on a sliding bearing includes a spindle 1 (for example, a rolling cage) with hinges 2, housing C and inserts 4 of the sliding bearing, a sealing pad 5, which is installed in the bores 6 of the housing C of the bearing. A through cavity 7 is made in the pad 5. The plunger 8, which is pressed against the body of the spindle 1 by a spring 9, is movably installed in the cavity 7 of the pad 5 and the bored cover 10 of the bearing. In the plunger 8, a grease-receiving hole 11 is made, located on the end of the plunger, which faces the spindle body, while the block 5 is pressed against the spindle body 1 by a spring 12, which is installed in the cavity 13, which is connected to the lubrication line 14. The spindle body 1 has holes 15 for supplying lubricant to the hinges of 2 spindles, equipped with non-return valves 16.

A slide bearing supported spindle lubricator works as follows.

In the initial position, the springs 9 and 12 press the sealing pad 5 and the plunger 8 against the body of the spindle 1. During the lubrication cycle of the hinges 2, the lubricant is fed through the main line 14 into the cavity 13. The pressure of the lubricant, affecting the area of the sealing pad 5, increases the force of pressing it against the spindle body 1. Because the pad 5 is pressed against the spindle body, the specific pressures on the end of the pad 5, which is in contact with the spindle body, will be higher than the lubricant pressure in the cavity 13. The lubricant passes through the lubricant receiving hole 11 in the plunger 8, pushes it away from the spindle body 1, compressing the spring 9. A cavity is formed between the body of the spindle 1 and the plunger 8, the pressure in which is less than the specific pressure on the surface of the sealing pad 5. This ensures the sealing of the lubricant in the cavity formed when the spindle rotates. A portion of the lubricant, when passing through the holes 15 with valves 16 in the spindle body through the resulting cavity, enters the holes 15 and further into the hinges 2. When the lubricant pressure in the main line 14 is turned off, the spring 9 returns the plunger 8 to the original position to the spindle body, while the lubricant from the main line, due to its own elastic properties, it is pressed onto the sliding surface of the spindle with the sliding bearing. Thus, the leakage of lubricant periodically lubricates the spindle sliding bearing. When using textolit as a sliding bearing, the lubricant is water with a constant supply and plastic lubricant with a periodic supply. In this case, the sealing pad 5, being pressed against the body of the spindle 1 by the pressure of the lubricant, cuts off the water and thereby ensures the supply of plastic lubricant to the hinges 2 of the spindles.

Thus, the use of this design of the device for lubricating the spindle with support on the sliding bearing, according to the formula of the useful model, will allow to reduce the operating costs of lubricants and an additional lubrication system due to the use of lubricant leaks from the supply to the spindle joints and their use for lubricating the sliding bearing spindle supports.

Claims (1)

UTILITY MODEL FORMULA A device for lubricating a spindle supported on a sliding bearing, comprising a sealing pad operably mounted with a grease-receiving part of the spindle, characterized in that the sealing pad is located in the borings of the housing and the sliding bearing insert, and is made with a through cavity and equipped by a spring-loaded plunger, movably installed in the cavity of the block and the bore of the bearing cover, while the grease-receiving hole of the plunger is brought out on its end with the possibility of contact with the grease-receiving part of the spindle body, and is connected to the lubrication line through the bore of the bearing housing. A : r M : I and I pose p SONGS i i i t pe z I ! x I Kk and V i i vane ZK, . and eat! | And | E he NE i i i As nya v a nya NK -- I am V IN u penya t p She i nna a V VB PO Sho in i | | sh from tah N MKK KK in nn sho I oh- xx A A, Se xx Fig. 1 is not dek sia ke m i sh- i m shu MK ya she Sho UK ya U zhuk, eh TO ke vok u vo xx det rmy o i NN V S NI CHNYA y pi YN i v Na nan she i Cohen Y shnek shk ! and. seni: nene veka an Z a V ee a CK vana SE i M o ME DNYA vo aa "ZI TOV M MK o oh EBSYA pe nsye a NN ke usske Koh sha NO SHY NN SHE SHU she: NN NNYA i NO z, ka ho OO 7 ko shk her - ShMK she Ko yuyu x xx Fig. 2