CN201002101Y

CN201002101Y - Backing roller core shaft

Info

Publication number: CN201002101Y
Application number: CNU2006201352117U
Authority: CN
Inventors: 郑红专; 赵林珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-26
Filing date: 2006-12-26
Publication date: 2008-01-09
Anticipated expiration: 2016-12-26

Abstract

The utility model relates to a backing roll core configuration for improving lubricate rate of rolling mill, which comprises an axis body. A passage is positioned on the axis body axially for feeding lubricant. A lube outlet hole is positioned on the axis body where backing roll axis is arranged. The lube outlet hole gets through surface of the roll core axis and the lubricant passage. The lube outlet holes can also be more than one, and are positioned on the surface of the axis body outer, with certain angle with each other. An annular groove is arranged on the axis body outer surface where the lube outlet hole is positioned. The utility model continues supplying lubricant through the passage inside the backing roll core, without limitation on the lubricant quantity and limitation on the supplying time. The lubricant can be supplied to the roll core axis and axletree without stopping the machine. The utility model can also ensure the lubricant quantity on the surface of the axletree and roll core axis enough which does not reduce because of consumption at all, in order to assure the prefect lubricating effect.

Description

Backing roller core shaft

Technical field

The utility model relates to the friction, lubrication field of milling train, relates in particular to a kind of backing roller core axle construction that is used to improve milling train friction, lubrication efficient.

Background technology

In the structure of plate mill, in order to improve the rigidity of rolled plate, adapt to the process requirements of different plates, usually adopt the backing roller that middle backing roll is supported, such as in tower rollers system, twelve high mill, in the mill, all adopted the backing roller that middle backing roll is supported, different is that the former has adopted three backing rollers, the latter has adopted four backing rollers, and the backing roller contacts with middle support rollers by bearing.In when work, be passed to the backing roller from the pressure of working roll by middle support rollers, the backing roller bears the load from multi-roll mill, and load is passed to the pedestal of milling train by backing roller core shaft and saddle.The outer ring of backing roller bearing contacts with the middle support rollers line, will be passed to the backing roller from the load of working roll, and inner ring contacts with backing roller core shaft, and live load is passed to mandrel.In the milling train course of work, because the operating pressure of working roll is very big, so bears huge pressure between backing roller bearing and the mandrel, under this kind pressure condition, mandrel and bearing are easy to damage.In order to improve the service life of backing roller and bearing, except that the structural design of as far as possible improving backing roller and bearing, of paramount importance is exactly lubricated, improves lubricating efficiency, making to have lubricating oil to exist all the time between mandrel and the bearing, reasonable lubrication can improve the service life of mandrel and bearing greatly.

In the prior art; the lubricated of backing roller bearing mainly is by under stopped status; the attendant adds moderate lubrication oil in bearing block; lubricating oil is stored in the bearing clearance; in the milling train course of work; penetrate into bearing and mandrel gap under the effect of the rotary centrifugal force of lubricating oil gravity and bearing enclose, thereby to being lubricated between mandrel and the bearing.

Prior art has following defective: the lubricating oil limited storage space, lubricants capacity is few, needs often to shut down lubricated.Lubricating oil mainly is stored in the bearing clearance, and the bearing clearance is limited, therefore it is limited to store oil mass, and lubricating oil is under gravity and action of centrifugal force, and lubricating oil is easy to lose, and therefore can cause and add the lubricating oil initial stage, the milling train lubricant effect is fine, after milling train work a period of time, because lubricants capacity reduces, lubricant effect reduces rapidly.At this moment, if do not shut down milling train is not lubricated, the frictional force between mandrel and bearing will strengthen greatly, as the fatigue friction, will very easily damage mandrel and bearing, reduce its normal service life.In the sheet material process, sometimes milling train need work long hours, and constantly shuts down maintenance and will cause the big loss of tool.Because lubricating oil enters bearing and mandrel gap, the main centrifugal force of lubricating oil gravity and bearing enclose rotation that relies on moves, thus lubricating oil enter bearing and mandrel gap begin lubricated very restricted, after lubricating oil reduces, the big heavy discount of lubricant effect, this has directly influenced lubricant effect.This is another defective of prior art, the lubricant effect instability.

The utility model content

The technical problems to be solved in the utility model is to overcome lubricating oil limited storage space in the prior art, need often to shut down defectives such as lubricated, lubricant effect instability, and a kind of continuous lubrication, backing roller core shaft that lubricant effect is good are provided.

The utility model is realized by following technological means:

A kind of backing roller core shaft comprises axis body, and described axis body axially offers a passage, is used to carry lubricating oil, and described axis body radially offers oil through at installation backing roller bearing place, and described oil through connects from mandrel outer surface and described passage.

Preferably, described oil through also can be a plurality of, each other in certain angle, is distributed in described axis body outer surface.

Preferably, the axis body outer surface at place, described oil through position offers annular groove.

Preferably, place oil gas separator in the described oil through.

The utility model compared with prior art has the following advantages:

1, continuous lubrication, pcrmanent lubrication.The utility model is by offering a passage in backing roller core shaft, lubricating oil can be pressed in the oil duct with certain pressure, thereby ooze out by the through hole of offering on the axis body surface again mandrel and bearing are lubricated, far different and the prior art of the supply mode of lubricating oil, therefore can realize lubricating oil supply constantly in a steady stream, oil mass is supplied with can be unrestricted; Service time is also unrestricted, even do not shut down device, but equally also supplying lubricating oil, with lubricated mandrel and bearing.

2, high lubricating effect.Because the oleophobic pipeline is arranged, lubricating oil can not reduce because of the minimizing of gravity effect and action of centrifugal force, after lubricating oil flows out from the axis body through hole, again can the new lubricating oil of supply in the passage, therefore lubricants capacity can not reduce, oil mass on bearing and mandrel surface can remain on sufficient state, can not reduce because of the loss of lubricating oil, can remain good lubricating effect.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Description of drawings

Fig. 1 is the axial section of the utility model backing roller core shaft embodiment one;

Fig. 2 is this left view embodiment illustrated in fig. 1;

Fig. 3 is the axial section of the utility model backing roller core shaft embodiment two;

Fig. 4 is this left view embodiment illustrated in fig. 3;

Fig. 5 is the front view of the utility model backing roller core shaft embodiment three;

Fig. 6 is the schematic diagram of oil gas separator one preferred embodiment;

Fig. 7 is the schematic diagram of another preferred embodiment of oil gas separator.

The specific embodiment

See also Fig. 1 and Fig. 2, Fig. 1 is the axial section of the utility model backing roller core shaft embodiment one, and Fig. 2 is a left view embodiment illustrated in fig. 1, can more clearly understand structure of the present utility model in conjunction with Fig. 1 and Fig. 2.As shown in FIG., backing roller core shaft comprises an axis body 1, and described axis body 1 axially offers a passage 2, is used to carry lubricating oil, the lubricating oil service with certain pressure with lubricating oil or air pressure to passage 2.Described axis body 1 radially offers oil through 3, and described oil through 3 connects from mandrel body 1 outer surface and passage 2.Lubricating oil comes through oil seepage in the oil through 3, position at oil through 3 places is equipped with the backing roller bearing, bearing outside surface contacts with middle support rollers, and bearing inner surface contacts with the backing roller core shaft outer surface, and the lubricating oil that comes out from oil through 3 directly is lubricated bearing.Because oil through 3 communicates with the passage of axially offering 2, so lubricating oil can supply with continuously, thereby guaranteed lubricant effect.

See also Fig. 3 and Fig. 4, Fig. 3 is the axial section of the utility model backing roller core shaft embodiment two, and Fig. 4 is this left view embodiment illustrated in fig. 3.Embodiment two is with implementing a difference, in embodiment one, only is provided with an oil through 3 on installation bearing place axis body 1, is provided with 4 oil throughs in the present embodiment, and oil through radially is distributed on the axis body 1 successively each other in 90 °.A plurality of oil throughs 3 are set on axis body, can be from different perspectives, different azimuth, the while supplying lubricating oil, this structure can be supplied with more lubricating oil, thereby more effectively lubricated.The quantity of oil through can determine that though 1 and 4 oil throughs are only arranged in the utility model preferred embodiment, this is not to restriction of the present utility model according to the demand for the amount of having.

See also Fig. 5, Fig. 5 is the utility model backing roller core shaft embodiment three front views.Embodiment three is that with the difference of the foregoing description embodiment three offers annular groove 4 in the position of the axis body outer surface at oil through 3 places, and the purpose of described annular groove 4 is for lubricating oil is play the guiding role, and can store a certain amount of lubricating oil.As do not have a gathering sill, when lubricating oil after oil through 3 flows out, be scattered everywhere at the mandrel outer surface, and, can guide the flow direction of lubricating oil effectively, and store a certain amount of lubricating oil when being provided with an annular groove, can more effectively lubricate mandrel and bearing.

See also Fig. 6 and Fig. 7, Fig. 6 and Fig. 7 are the schematic diagram of oil gas separator two preferred embodiments.Generally, in the oil through 3 of mandrel, oil gas separator is set.Oil gas separator 5 is a column, and its outer surface cooperates with the fuel feed hole inwall, axially connects at least one hole, also can offer a plurality of holes 51, connects column end face and bottom surface.When the oil gas separator of column was positioned in the fuel feed hole, lubricating oil was input to oil in the fuel feed hole from oil pipeline 1, usually was mingled with the oil gas that evaporates in the lubricating oil, was mingled in the lubricating oil, and these mist of oils influence lubricant effect.By oil gas separator, because its aperture is less, lubricating oil can only slowly flow, thus oil gas can be along the hole 51 surface discharge, lubricating oil then hangs in the passage in hole 51 and continues to flow.The difference of Fig. 6 and Fig. 7 is that outer surface shown in Figure 6 is a smooth surface, and Fig. 7 is the column that offers screw thread 52, and Fig. 8 offers screw thread and is convenient to be connected with fuel feed hole, and its mechanism is identical with mechanism.

It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.

Claims

1, a kind of backing roller core shaft comprises axis body, it is characterized in that, described axis body axially offers a passage that is used to carry lubricating oil, and described axis body radially offers oil through in that backing roller bearing place is installed, and described oil through is from mandrel outer surface and the perforation of described passage.

2, backing roller core shaft according to claim 1 is characterized in that, described oil through is a plurality of, each other in certain angle, is distributed in described axis body outer surface.

3, backing roller core shaft according to claim 1 is characterized in that, the axis body outer surface position at described oil through place offers annular groove.

4, according to the arbitrary described backing roller core shaft of claim 1-3, it is characterized in that, place oil gas separator in the described oil through.

According to the described backing roller core shaft of claim 4, it is characterized in that 5, described oil gas separator is a column, its outer surface cooperates with the fuel feed hole inwall, axially connects a hole or a plurality of hole.

6, backing roller core shaft according to claim 5 is characterized in that, described oil gas separator outer surface is smooth surface or is provided with screw thread.