Tension bars for roll press for paper making machine
AssigneeJ. M. Voith GmbH
InventorChristian Schiel
Life of this patent
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Abstract
The axes of a first press roll (1) and of a second press roll (3) lie in a press plane (E). Each of the press rolls has a respective journal (2, 4). The first press roll is supported in a first bearing bracket (5). The second press roll rests in a second bearing bracket (6) which is coupled, by means of flexurally soft tie-bar groups (7a, 7b . . . , 8a, 8b . . . ), to the first bearing bracket (5). In the unloaded condition of the roll press, the second bearing bracket (6) rests on the first bearing bracket (5). In the loaded condition, however, a clearance (p) is established between the bearing brackets (5, 6), which permits the bearing brackets (5, 6) to be displaceable relative to each other in the axial direction of the press rolls.
Claims24
In a roll press having a first press roll and a second press roll having main axes which define a press plane and which form with one another a press nip, the roll press having a loaded condition and an unloaded condition, and wherein:
- a) each of the press rolls has a rotatable roll shell and means for permitting the roll shell to rotate about the axis of the press roll;
- b) the first press roll is supported on at least one end in a first bearing bracket which is in turn supported on a machine frame;
- c) the second press roll is supported on at least one end in a second bearing bracket which is coupled to the first bearing bracket by means of detachable tie bars, which are arranged on both sides of the press plane substantially parallel to the latter and perpendicular to the main axes of the press rolls;
- d) the detachable tie bars being low in tension in the unloaded condition of the roll press;
- e) the tie bars being movable substantially in the direction of the main axes of the press rolls in such a manner as to permit, in the loaded condition of the roll press, the second bearing bracket of the second press roll to be movable relative to the first bearing bracket of the first press roll;
- the improvement wherein:
- f) each of the tie bars, which couple the first and second bearing brackets, comprises a group of at least two tie bars arranged in a plane which is approximately parallel to the press plane;
- and
- g) attachment means permits the tie bars to be inserted into the bearing brackets along said plane of said tie bars for being attached to the bearing brackets.
A roll press having a first press roll and a second press roll, having main axes which define a press plane and which form with one another a press nip, the roll press having a loaded condition and an unloaded condition, wherein:
- a) each of the two press rolls has a rotatable roll shell and means for permitting the roll shell to rotate about the axis of the press roll;
- b) the first press roll is supported on at least one end in a first bearing bracket which is in turn supported on a machine frame;
- c) the second press roll is supported on at least one end in a second bearing bracket which is coupled to the first bearing bracket by two groups of detachable tie bars arranged on respective sides of the press plane, each group comprising at least two tie bars arranged in a plane which is approximately parallel to the press plane;
- d) the tie bars are movable substantially in the direction of the main axes of the press rolls in such a manner that in the loaded condition of the roll press the second bearing bracket of the second press roll is movable in the press plane relative to the first bearing bracket of the first press roll;
- and
- e) the bearing brackets and tie bars have attachment means permitting the tie bars to be inserted into the bearing brackets along said plane of said tie bars for being attached to the bearing brackets.
Dependencies are inferred from the claim text.