Abstract:
PROBLEM TO BE SOLVED: To prevent the sway, vibration and bearing fatigue of a laying unit having a laying pipe for a rolled wire rod transferred fast. SOLUTION: The laying unit is provided with a pressuring apparatus DV which is combined with a carrying housing TG and which gives a load to part of a carrying sleeve TH in an axial radial direction between a bearing EL and a bearing HL. The pressing apparatus DV consists of a carrier of a number of pressing rolls, or a one-piece bush which is capable of hydraulic loading bush and which surrounds cylindrical part THZ of the carrying sleeve TH, and also consists of a magnetic bearing, or a slide bearing capable of loading by pressing force in the axial radial direction.
Abstract:
PROBLEM TO BE SOLVED: To adapt a water-cooled line, by changing cooling tubes and a guiding member or a guiding trough, to the diameter of various rolling wire rods which differs by changing of cooling tubes. SOLUTION: When rolling wire rods having air thermal refining, a water- cooled device connected forward is formed within the limits of bigger and bigger diameters of the wire rods. In the case of high rolling speed of up to 120 m/s or more, the limit of the diameter of the wire rods cannot be covered with only one cooling tube but should be rather covered with cooling tubes having various diameters to be guided closely and precisely. The whole water- cooled line 1 formed with many cooling tube lines which are set in parallel and which have cooling tubes coupled each other by the guiding trough 3, set in a cooling water box 2 and having different internal diameters is equipped on a carrier structure. When changing the diameter needed in the cooling tube line, the whole water-cooled line 1 is slided in parallel and in the vertical direction for a rolling wire rods guiding line 7.
Abstract:
A bearing for rolling-mill rolls which each have two roll journals (2), of which at least one carries a journal bush (4) in the axial direction at least in a certain region, said journal bush (4) being arranged in a rotationally locked manner via a feather key (5), wherein the journal bush (4) is enclosed by a bearing bush (6) held in an insert (7), and a load-bearing lubricating film is provided between the journal bush (4) and the bearing bush (6), wherein the feather key (5) is provided in a region of the roll journal (2) which lies outside the region of the roll compression force acting on the journal bush (4) and transmitted to the insert (7), is to be improved in such a way that the fluctuations in the roll compression force which are caused by the feather key or its locating slot are ruled out and the roll is nonetheless of very short construction, such that considerable savings are obtained through narrower foundations and narrower rolling mill halls and also narrower roll workshops. To this end, it is proposed that the feather key (5) or its locating slot (11) be arranged as close as possible to the Rötscher line (10) defining the outer region of the compression force transmission, and that the extent of the feather key (5) in the radial direction be greater than its extent in the axial direction.
Abstract:
Disclosed is a device for influencing in a controlled manner the load-bearing force of supporting rollers (SW) that rest on working rollers. The neck (WZ) of said supporting rollers (SW) which is provided with an extension (ZA) is mounted in roller bearings or sliding bearings that are disposed in a bearing-supporting housing of the rollers of a roller stand. The neck extension (ZA) is mounted in a supporting bearing. The outside of the housing (LG) of said supporting bearing is connected to the bearing-supporting housing. An intermediate housing (ZG) which is inserted in the housing (LG) of the supporting bearing cylindrically encloses the supporting bearing, is impinged upon by a piston cylinder unit (RB, SK), and can be displaced within said housing (LG) in a radial direction relative to the axis of the neck extension (ZA).
Abstract:
AN APPARATUS FOR CONTROLLED INFLUENCING OF THE SUPPORTING FORCES OF BACKING ROLLERS (SW) RESTING ON WORKING ROLLERS WHOSE PIVOTS (WZ) SUPPORTED IN ROLLER OR SLIDING BEARINGS IN A BEARING SUPPORT HOUSING OF THE ROLLERS OF A ROLLER STAND HAVE A PIVOT ATTACHMENT (ZA) SUPPORTED IN A STEP BEARING WHOSE BEARING HOUSING(LG)IS ATTACHED TO THE BEARING SUPPORT HOUSING ON THE OUTSIDE, WHEREIN AN INTERMEDIATE HOUSING (ZG) INSERTED IN THE BEARING HOUSING (LG) AND CYLINDRICALLY ENCIRCLING THE STEP BEARING, IS ACTED UPON BY A PISTON CYLINDER UNIT (RB, SK) AND IS DISPLACEABLE IN POSITION IN THE BEARING HOUSING RADIALLY TO THE AXIS OF THE PIVOT ATTACHMENT (ZA).FIG. 1
Abstract:
The invention relates to a sealing device for roller bearings, comprising a journal seal (4), which is arranged upstream on the roller-ball side of the annular seal (8) which is connected in a rigid manner to an annular projection (7) of the bearing housing (5). The sealing lip (18) of the sealing device is applied to the front side (10) of the roller (1) by means of a sealing contact. The aim of the invention is to improve the sealing device in such a manner that the sealing lip of the annular seal is barely impinged upon by cooling means mixed by impurities, making it long lasting and ensuring that no undesired water can penetrate into said outlet. According to the invention, an L-shaped profile (11), in the cross-section, is rigidly connected to the first side (12) thereof by means of the front side (14) of the roller (1), such that the sealing lip (18) is applied to areas of the first side (12); such that the second side (13) of the L-shaped annular profile (11) is sealed to the roller balls at a certain distance from the annular seal (8) and regions of the annular projection (7); and such that the annular projection (7) comprises an outlet groove (9) which is arranged on the outer side and is open towards the outside.
Abstract:
Dispositivo para la instalación y/o extracción de una unidad de cojinete (3) consistente en un pieza de ensamblaje con un cojinete del perno del rodillo dispuesto en ella, sobre el perno del rodillo (1) del rodillo de soporte de una armadura de laminado, y/o del perno del rodillo (1) del rodillo de soporte de la armadura de laminado, caracterizado porque un anclaje de tensión (5), que se extiende en la dirección axial del rodillo, se engancha al perno del rodillo (1), porque el anclaje de tensión (5) soporta una arandela de unión (6) desplazable axialmente sobre éste, que se apoya, por un lado, en una tuerca (8) desplazable por atornillado sobre el anclaje de tensión (5) y, por otro lado, en la unidad de cojinete (3), y porque a la tuerca (8) puede asociársele temporalmente una herramienta hidráulica de pretensado (16), a través de la cual puede ejercerse una fuerza de montaje entre el anclaje de tensión (5) y la arandela de unión (6) apoyada en la unidad de cojinete (3), y porqueuna unidad de extracción (11) puede acoplarse temporalmente a la unidad de cojinete (3) y porque un cilindro hidráulico (15) de la unidad de extracción (11) puede apoyarse en el perno del rodillo (1).
Abstract:
The invention relates to a sealing device for cylinder bearings, in particular, oil film bearings or roller bearings. According to the invention, a sealing ring ( 6 ) which has a cylindrically-shaped sealing surface ( 7 ) is connected to the cylinder journal ( 2 ) or the journal bushing ( 3 ). An elastic sealing element ( 9, 10 ) which is arranged in a fixed manner in a holder ( 8 ), which connected to an insertion piece ( 5 ), lies on said sealing surface. The sealing surface ( 7 ) is rolled.