摘要:
A deflection compensating press roll is disclosed in which a stationary axial support beam has a roll shell mounted for rotation thereabout and a plurality of hydrostatic support elements provide support along the length of the roll. The support elements include a support shoe having a bearing surface which cooperates with the inside of the roll shell and a piston joined to the support shoe which includes a cylindrical tube having generally constant inside and outside diameters.
摘要:
The lower guide roll for the press felt is pivotally mounted at one end to pivot upwardly in order to allow the press felt to be mounted or removed from the press. The bearing at the pivot end is secured on a support which, in turn, is pivotal about a horizontal axis below the bearing.
摘要:
A flexure-compensating roll for a rolling mill having a rotatable roll shell partly of cylindrical shape disposed about a non-rotating beam with hydraulically actuated pistons received in the beam for support of the shell along the line of contact with a mating roll includes inboard bearings for support of the roll shell from stationary piers and outboard bearings for support of the beam from the shell, the inner race of the outboard bearings being fixed to the shell and the outer race thereof being fixed to the beam via plates or spiders, a further spider coupling to the shell for the application of torque thereto.
摘要:
A controlled deflection roll with a fixed beam and surrounding roll shell with pistons guided in radial bores of the beam and bearing against the inner surface of the shell for support thereof is provided, in the branch ducts delivering hydraulic fluid under pressure from a common manifold to the individual pistons, with adjustable valves controlled remotely by means of hydraulic or electrical signals to permit individual control of the shell-supporting pistons.
摘要:
The controlled deflection roll comprises a rotatable roll shell supported at a stationary support member by means of a plurality of hydrostatic pressure elements. The hydrostatic pressure elements are sealingly movably guided by guide structure, for example, bores, which define cylinder chambers. Each cylinder chamber is connected by a feed system comprising a feed channel to a source of a hydraulic pressure medium. Between each feed channel and the related hydrostatic pressure element, there is arranged a damping body provided with at least one throttle location, for example throttle bores, through which the hydraulic pressure medium can flow. The damping body defines essentially the only connection between the feed channel and the cylinder chamber. Possibly occurring oscillations or vibrations of the rotatable roll shell relative to the stationary support member are damped by these damping bodies and, accordingly, transmission of such oscillations or vibrations to the hydraulic pressure medium feed system is prevented.
摘要:
A controlled deflection roll containing a stationary roll support and a roll shell rotatable about the roll support. The roll shell is provided with a substantially ring-shaped closure element having an opening which surrounds the roll support in spaced relationship and enables movements of the roll shell in all radial directions in relation to the roll support. The closure element is connected by a torque coupling with the roll support and is provided with a drive gear meshing with a toothed rim provided at the roll shell. Gears can be arranged at both ends of the roll shell and interconnected by a connection shaft.
摘要:
A controlled deflection roll comprising at least one piston-like or punch-like pressure or support element which is provided with a bearing or contact surface upon which there can slide or bear the roll shell of the controlled deflection roll. The bearing or support arrangement at the respective ends of the roll shell, is equipped with throttle disk means for limiting the infeed of a hydraulic fluid medium, typically oil, to the bearings of the bearing arrangements, from an intermediate compartment or chamber located between the roll shell and its roll support or beam. Additionally, between the bearing and an outer seal means there is arranged an outflow element, such as an outflow conduit, for the withdrawal of the oil or other hydraulic medium.
摘要:
A support or pressure element for a controlled deflection roll, comprising a cylindrical piston section intended to be guided in a cylinder bore of a stationary support, a contact or shoe section intended to bear against the inner surface of a roll shell rotatable about the support, and a contact or bearing surface in the form of a section of a cylinder surface where there are formed at least three hydrostatic bearing pockets. The bearing pockets flow communicate by channels with a surface of the piston section located in a cylinder chamber of the related cylinder bore. At least one of the channels possesses at least one portion which extends from a peripheral surface or region of the piston section at an inclination with respect to the lengthwise axis of such piston section closer to such axis. The mouth of the channel portion at the peripheral surface or region of the piston section is located near to the location which is essentially furthest from the plane of the axes of the contact or bearing surface and the piston section.
摘要:
A rolling device or roller mill having a controlled-deflection roll possessing a stationary roll support or carrier mounted in a frame of the rolling mill. A tubular roll shell is rotatable about the roll support and bears thereon by means of at least one bearing or support element. The roll shell is provided at its ends with guide members which are rotatably mounted in the roll shell and which are guided on the roll support in the direction of the pressing or disengaging movement of the roll shell. The controlled-deflection roll is equipped with a scraper device having a scraper blade which, during operation, is in contact with the outer surface of the roll shell, the scraper device being rotatably mounted on the frame. At least one of the guide members has a disengaging or lift-off element which, when the roll shell performs a disengaging or lift-off movement from the operative position, abuts a part of the blade support or carrier and raises the blade off the surface of the roll shell.
摘要:
An apparatus for controlling a deflection compensating press roll of a rolling mill having a pair of press rolls at least one of which is a deflection compensating roll having a support core, a roll shell rotatably mounted about the core, bearing means disposed between the core and the roll shell adjacent the shell ends, a plurality of support devices engaged between the core and the roll shell to exert forces therebetween and pressure means for pressing the rolls against each other, the control apparatus comprises a frame, a movable member mounted in the frame, means coupled with the support devices and the pressure means and responsive to the forces exerted thereby for exerting a force on the movable member which simulates the forces exerted by the support devices and the pressure means so that the movable member is maintained in an equilibrium position when the forces exerted by the support devices and the pressure means are substantially in equilibrium, means for sensing displacement of the movable member from the equilibrium position and means responsive to the sensing means for restoring the forces exerted by the support devices and pressure means substantially to equilibrium.