Forming roll bearing seal
FIELD: process engineering.
SUBSTANCE: forming roll bearing seal comprises bearing assembly fitted on shaft journal and adapter with circular groove at its end, bearing cover with sealing gland seat. Said sealing gland comprises case, radial sponge with working edge interacting with adapter radial surface. Reliable contact with adapter surface in changing the position of roll rubbing surfaces relative to gland sponges is ensured by furnishing the gland with second radial sponge connected with case end face and interacting by its working edge with adapter groove inner radial surface. Said adapter has ledge interacting with extra sponge.
EFFECT: higher reliability of seal.
The invention relates to the field of rolling equipment, particularly to sealing devices of the working roll bearings, and can be used in sealing devices of bearings for machines and mechanisms.
Known here as the similar design of the sealing device supports mill roll, containing the bearing cover with the socket for the installation of the seal, comprising a casing, radial and mechanical sponge with working edges that interact with the respective rolling surfaces of the roll (see RF patent №2169873, CL F16J 15/32, 12.12.1998).
This sealing device supports mill roll allows you to ensure reliable sealing of the rubbing surfaces at a certain fixed position of the mechanical and radial surfaces of the roll.
A disadvantage of the known construction of the sealing device is that by changing the position of the rubbing surfaces of the roll relative to the jaws cuff latter is not able to provide their working edges reliable contact with the face and the radial surfaces of the roll.
Known constructions of sealing devices closest to the technical essence (prototype) is a sealing device supports mill roll, containing situated on the neck Valk the bearing unit and the nozzle with a groove in the end face, cover the bearing with a socket to install the seal, comprising a casing, and two sponges with working edges that interact with surfaces of the nozzle (see RF patent №2389573, CL 7 WW 31/02, 05.22.2009).
A disadvantage of the known construction of the sealing device (prototype) is that when a significant movement of the roll relative to the cuff will have contact only with the radial surface of the nozzle, while between the end surface of the nozzle and the cuff is formed a gap which is filled with water from the dross, which significantly reduces the sealing properties of the cuff.
The technical result of the proposed sealing device supports mill roll is maintaining the sealing properties of the cuff during axial movement of the roll relative to the cuff, increase the durability of the sealing device, improving the efficiency.
The technical result of the proposed sealing device supports mill roll is achieved by the fact that the cuff is provided with a second radial sponge connected to the end of the body and interacting with its working edge with the inner radial surface of the groove of the nozzle, is made in the radial direction with the tab in contact with the surface for more sponges. The AOC is e in the outer surfaces of the nozzle - radial and mechanical, executed inclined.
Declared the sealing device supports mill roll is illustrated by the drawing, which in the example shown, the device supports mill roll having a significant axial movement.
The cushion 1 is set to a bearing 2, sitting on the neck of the roll 3, on which the nozzle 4 is made at the end of the longitudinal circular groove 5, the lid 6 is placed in it, the sealing lip 7, consisting of a body 8, a radial sponge 9 with the working edge 10 that communicates with the radial surface 11 of the nozzle 4, and the second radial sponge 12 connected to the end of the body 8 and interacting with its working edge 13 with the inner radial surface 14 of the groove 5 of the nozzle 4. On the radial surface 14 of the groove 5 of the nozzle 4 is made protrusion 15 in contact with the inner surface of the sponge 12. The outer surface face 16 and 17 radial - nozzles 4 are inclined.
The operation of the device is as follows.
In the process, the sponge 12, simultaneously contacting with the protrusion 15 and the working edge 13 with the surface 14 of the nozzle 4, creates an insurmountable obstacle to the penetration of coolant from the dross in the area of the bearing. Radial sponge 9, contacting its working edge 10 with the surface 11 of the nozzle 4, provides a window is athelney protection of the bearing 2 from the ingress of coolant from the dross. During installation of the roll 3 (especially section rolling mills) of the possible significant axial movement of the clamping sleeve 4 relative to the cushion 1 with the cover 6 and the sealing lip 7. When moving the roll 3 in one or the other extreme position of the jaws 9 and 12 will be in constant contact with their working edges 10 and 13, and the protrusion 15, contacting the sponge 12, creates an additional barrier for the penetration scale with the cooling fluid in the cavity of the bearing 2. Inclined end 16 and 17 of the radial surface of the nozzle 4 when the rotation creates a centrifugal force that repels the coolant from the dross from the friction zone.
Thus, the proposed sealing device supports mill roll allows you to maintain the sealing properties of the cuff by changing the position of the rubbing surfaces, to increase the durability of the sealing device, to increase its efficiency by creating additional barriers and to guarantee interoperability working edges of the cuff with the sealing surfaces of the device.
1. The sealing device supports mill roll, containing situated on the neck of the roll bearing unit and the nozzle for the end of the longitudinal circular groove, a cover enclosing the bearing, with a socket for installing a sealing mange is s, includes case, radial sponge with a working edge that interacts with the radial surface of the nozzle, characterized in that the cuff is provided with a second radial sponge connected to the end of the body and interacting with its working edge with the inner radial surface of the groove of the nozzle, is made in the radial direction with the tab in contact with the surface for more sponges.
2. The sealing device supports mill roll according to claim 1, characterized in that the outer end and a radial surface of the nozzle is made inclined.
FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy, particularly, to mill backup roll bearings. Proposed bearing comprises sleeve-journal mounted at forming roll pin taper section, sleeve-insert arranged between shaft pad and sleeve-journal, thrust bearing and annular hydraulic piston-cylinder unit composed of moving part and fixed part locked at roll pin cylindrical section whereat sleeve-journal may displace due to rigid coupling between moving part of annular unit and sleeve-journal or single-piece design.
EFFECT: longer life.
3 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: proposed seal comprises cover and sealing V-like annular cuffs including case, jaw with working edges to get in contact with baffle and adapter fitted on bearing bush. Working edges are pressed against sealed surface by elastic properties of the jaws. Gaps resulting from wear of cuff working edges are ruled out by providing the proposed device with elastic ring elements with cross-section shaped to circle or ring fitted with interference between cuff case and jaw.
EFFECT: higher efficiency.
FIELD: machine building.
SUBSTANCE: structure of the bearing rolls contains a bearing assembly and a nozzle located at the neck of the cylinder, the lid covering the bearing with a "П"-shaped radial collar, which includes a body, two sponges with working edges interacting with the outer surface of the nozzle. Maintaining integrity under condition of high pressure of lubrication is ensured owing to the fact that the outer surface of the nozzle is designed in the shape of stepped conical surfaces, the angles of which are directed to the bearing, and the angles of conical surfaces range from 30° to 60°. In addition, the sponge facing the bearing is made more rigid.
EFFECT: invention is intended to improve reliability of seal of the bearing rolls.
FIELD: machine building.
SUBSTANCE: sealing device has a bearing assembly and a nozzle with a circular longitudinal groove designed on the edge, located on the neck of the roller, a lid covering the bearing with a socket for installation of a sealing sleeve, which includes a housing, a radial sponge with a working edge, interacting with the radial surface of the nozzle. Reliable contact of the working edges with the surfaces of the nozzle when changing position of the rubbing surfaces of the roller relative to sponge cuff is ensured by the fact that the cuff is provided with a second radial sponge, which is connected with the end of the body on the outer diameter, and interacting with its working edge of the outer radial surface of a slot of the nozzle.
EFFECT: reliability improvement of seal of the bearing rolls.
FIELD: machine building.
SUBSTANCE: device includes a bearing assembly and a nozzle located at the neck of the cylinder, a lid covering the bearing with a "П"-shaped radial sleeve comprising a body with two working edges that interact with the outer surface of the nozzle. Maintaining integrity of the bearing assembly with regard to wear factor of the working edges is ensured owing to the fact that the device is provided with the second nozzle and a second compression spring located between the nozzles, while the outer surface of the nozzle, which interact with the working edges, are made cone-shaped.
EFFECT: reliability improvement of the seal of bearing rolls.
SUBSTANCE: support device of turning roller comprises a bearing assembly and a nozzle, located on cylinder neck, a lid covering the bearing with a "П"-shaped radial comprising a body with two working edges that interact with the outer surface of the nozzle. Maintaining the integrity under condition of penetration into the device of different environments is ensured by the fact that the outer surface of the nozzle is made in the form of two divergent conical surfaces with the central vertex and the cone angle ranging from 15° to 45°, while the ratio of angles of conical surfaces is equal to 1.3…1.5 on either side of the nozzle.
EFFECT: reliability improvement of seal of the bearing rolls.
SUBSTANCE: guiding device has guiding stocks located in fixed manner or with possibility of horizontal movement on inner sides of windows of roll mill stand, and upper and lower bending blocks of each side, which are arranged respectively on two guiding stocks located parallel to each other. Reduction of friction in the system is provided owing to the fact that each bending block is arranged on one of the guiding stocks, and the other parallel guiding stock is partially enveloped with the cavity made in bending block; at that, parallel guiding stocks are made so that upper bending blocks can move along them, and parallel guiding stocks are provided with possible movement of lower bending blocks along them.
EFFECT: easier movement of bending blocks for pads of working rolls.
6 cl, 4 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy, particularly to mill roll bearing seals. Proposed mill roll bearing seal comprises annular cup packing fitted in bearing cover consisting of case with at least two working edges jointed to case by two jaws to interact with shaft journal. Said cup packing has at least two working edges jointed to case by two conical jaws to interact with cover groove inner surface. Cover has radial channels. Cover bottom part drain bore is made aligned with aforesaid radial channels.
EFFECT: good sealing properties, longer life.
FIELD: technological processes.
SUBSTANCE: invention relates to the field of rolling equipment, namely to sealing devices of working rolls supports, and may be used, for instance in sealing devices of bearing supports of machines and mechanisms. Sealing device of forming roll support comprises bearing unit, nozzle, arranged on shaft journal, cover of bearing with seat for installation of sealing collar, including body, radial and end grips with working edges interacting with according surfaces of nozzles. End grip is connected to radial grip in its end part and is arranged with curvilinear shape, which faces radial surface of nozzle with its concave side, end surface of which is arranged as inclined. Ratio of rigidities in end and radial grips makes 1:3.
EFFECT: invention makes it possible to preserve sealing properties of collar in process of measurement of relative position of rubbing surfaces of roll, and also to increase durability of sealing device and to increase efficiency.
SUBSTANCE: invention refers to rolling equipment, particularly to packing devices of bearings of working rollers and can be implemented, for example in packing devices of bearing supports of machines and mechanisms. The packing device of the bearing of the forming roll consists of V-shaped circular collar installed in a cover. The collar consists of a case, and of a conic jaw with a bridge with at least two working edges interacting with a head arranged on a roll neck. Generatrix connecting working edges of the collar in a free state is positioned at angle of 5-15° to working surface of the head whereat vertex of angle is directed to devise axis. The working edges of the collar are interconnected with the bridge; ratio of this bridge rigidity to rigidity of the conic jaw is 1:3.
EFFECT: increased service life of device and raised efficiency.
FIELD: axial fixation of bearing assemblies and chocks in journals of rolling rolls of wide strip rolling mills.
SUBSTANCE: unit includes spacing sleeve mounted on journal of roll. Said sleeve is hold against cranking by means of key arranged in key groove of journal. Ring halves are mounted in annular groove of roll journal and are embraced along their outer cone surfaces by means of spacing nut screwed on thread of end outer portion of spacing sleeve. Unit also includes member for holding nut against cranking on spacing sleeve. Key is arranged between spacing sleeve and roll journal freely in key grooves provided on inner surface of sleeve and journal. Said member for holding spacing nut against cranking on spacing sleeve is in the form of flat ring secured to outer end of nut by means of bolts. There is protrusion on inner surface of ring; said protrusion is arranged in key groove of roll journal. Number of openings for bolts in ring is less than number of threaded openings in end of spacing nut. Diameter of openings of ring is more than that of bolts. Number of openings of ring and of spacing nut corresponds to condition providing possibility for securing nut in any position to ring at least by means of two bolts arranged in diametrically opposite openings.
EFFECT: lowered number of emergency idling periods, reduced consumption of rolls and bearings, shortened time period for changing rolls, enhanced reliability of fixation of bearings, improved rolling efficiency, high quality of rolled strips.
3 dwg, 1 ex
FIELD: axial fixation of bearings and chocks in journals of rolling rolls of wide strip rolling mills.
SUBSTANCE: assembly includes chock supporting bearing unit, inner and outer lids provided with seals, mounted in journal of roll and secured to chock; spacing ring mounted in key of rolling roll, members for axially fixing chock mounted in annular turning of roll journal. Members for axially fixing chock are in the form of two cover plates with inner cylindrical ribs arranged diametrically opposite relative to vertical axis of chock in annular turning of roll journal. Cover plates are mounted with use of bolts with possibility of motion in outer end of spacing ring. Thickness of cover plates exceeds that of inner cylindrical ribs that is why stop cylindrical surfaces are formed. Said surfaces are joined at both sides of annular turning of roll journal with outer surface of journal. Inclined straight different-length slits are formed in cover plates symmetrically relative to vertical axis of chock. Said slits are inclined by different angles to horizontal axis of chock; lower slits are inclined by large angle and upper slits are inclined by small angle. Length values of chords in cover plates between crossing points of different radius circles passed from center arranged in roll axis with axes of slits along their whole length are the same and equal to distance between mounting bolts of cover plates in spacing ring. Countersunk recesses for bolt heads are formed in ends of slits in bolt mounting places on both planes of cover strip surface.
EFFECT: shortened duration of idle periods and of roll change periods, lowered consumption of rolls and bearings, enhanced quality of rolled strips, improved reliability of assembly for axially fixing bearing and efficiency of rolling mill.
FIELD: packing unit of journal of roll in bearing assembly on lubricating pad for roll of rolling mill.
SUBSTANCE: roll has journal having intermediate cone portion ended by less diameter part. Journal is placed in case fastened relative to roll journal and mounted with possibility of rotation in sleeve. Packing of journal may be placed in cone portion of roll journal for rotating together with it in position embedded to sealing end plate secured to said pad. Packing unit includes elastic annular body having distributed in axial direction and extending outside along radius first and second flanges. Configuration and size values of said flanges provide sealing contact with sealing end plate. First and second distributed in axial direction ridges extend along radius inside from annular body in order to provide contact with cone portion of roll journal. Said ridges are leveled along radius and they are joined in radial direction with first and second flanges through three-dimensional intermediate parts of packing unit body.
EFFECT: prevention of oil leakage due to correct positioning of radial support for body of packing unit and due to joining of said support at lowered friction between case end and body of packing unit.
4 cl, 2 dwg
FIELD: rolled stock production, namely stand for cold or hot rolling strip materials of different kinds of steel.
SUBSTANCE: rolling stand includes backup and rolling rolls are mounted with possibility of rotation in chocks arranged at both sides in guides of framework of housing. Rolls may be moved for regulating inter-roll gap and they may be additionally shifted by means of horizontal cylinder-piston units mounted in framework at least of one side for regulating clearance. At least at one side of housing, rolling roll chocks are guided by means of cylinder-piston unit arranged in framework and by means of supporting member on end face of piston. Guides of said chocks for motion without clearance when vertical drive of roll mounting is turned off and said chocks are made with possibility of pressing to other side of housing and drawing off when vertical drive of roll mounting is turned on.
EFFECT: lowered wear degree of rolls, elimination of clearance in rolling roll chocks in their vertical guide at rolling process without using hydraulic coupling with chocks.
13 cl, 9 dwg
FIELD: rolling equipment, namely bearing assemblies of rolling rolls.
SUBSTANCE: bearing assembly of rolling roll includes liquid friction bearing unit whose sleeve-pivot is fit on cone portion of rolling roll journal. Said sleeve-pivot is joined with roll journal by means of one or more keys placed in key grooves formed on sleeve-pivot and cone journal of roll. Base of each key groove is parallel to generatrix of joined cone surfaces of sleeve-union and roll journal.
EFFECT: increased rigidity of rolling roll bearing unit, lowered influence of rolling roll bending upon accuracy of rolled metal at time moment of key joint passing through load plane.
SUBSTANCE: invention relates to sealing devices intended for bearings of machines and mechanisms. The roll bearing sealing device containing a bearing cap with a ring element and, at least, two sealing collars. One of them, a face-type collar, is arranged on the cap ring element and contacts by its working edge with the face surface in the roll recess. The cap ring element is made tapered extending beyond the sizes of sealing collar set in the sap, while the roll face has an additional tapered recess receiving the ring element to form, together with the additional recess, a slot seal. Here, note that screw-like grooves are made on the additional recess tapered surface. Also, the device is provided with one more face sealing collar set on the roll neck contacting by its working edge with the cap.
EFFECT: increase in the sealing device service life and simplification of its mounting.
2 cl, 2 dwg
FIELD: technological processes.
SUBSTANCE: film-lubrication bearing includes bushing-insert, which is installed in the chuck of forming roll, bushing-journal, which is hafted on roll cone neck, and thrust unit. Bushing-journal is retained against slipping on roll neck by means of key installed in keyway, which is provided on internal conical surface of bushing-journal and external conical surface of roll neck so that bridge is formed between keyway and end surface of bushing-journal from the side of thrust unit, at that bridge width makes (0.03...0.09) from minimum diameter of internal conical surface of bushing-journal.
EFFECT: increase of bearings rigidity; rolling accuracy and quality of rolled material.
SUBSTANCE: proposed pad has one lubricant receiving space on the barrel side and one lubricant receiving space on the discharge side, both aforesaid spaces being located beneath the deepest point of the bearing bush, and the holes communicating receiving aforesaid spaces on both aforesaid sides. Note that the lubricant is intercepted in the pad by additional lubricant receiving spaces.
EFFECT: reduced number of contacts between roller on barrel side and lower costs of pad production.
7 cl, 2 dwg
SUBSTANCE: regulation method of rolling mill with facility for loading of roll bearing plane guide face, located in stand embrasure of rolling mill, containing pressure plate, implemented with ability of overlaying on bearing plane guide face, and also hydraulic actuators for pressure plate movement, located in stands of rolling mills, outfitted by instruments, recording pressure and movement tracks of piston, includes position definition of roller bearing planes by means of pressure plate occlusion and measurement of piston stroke in direction of bearing planes at the side of driver and on side of rollers maintenance, comparison of received values of bearing plane position of roller with filled earlier values, definition of wear and frictional force in stand embrasure of rolling mill by means of comparison results, implementation subject to defined values of frictional forces regulation of bearing planes and wear take up in stands of rolling mill.
EFFECT: optimisation control of rolling mill with wear take up and regulation frictional forces in embrasure of mill stand.
4 cl, 3 dwg
FIELD: mechanics, metallurgy.
SUBSTANCE: film lubrication bearing sealing device incorporates a separation chamber confined by two, primarily contact seals the said separation chamber accommodates a medium representing gas and has holes to feed gas there inside. The oil discharge channel is furnished with a gas outlet to withdraw gas from the bearing oil drain channel in atmosphere.
EFFECT: longer life of bearing parts ensured by ruling out ingress of cooling fluid and solid inclusions and oil contamination as well as it leakage.