Prestressed double action forcing press
AssigneeVictor Fluid Power
InventorsDennis M. Scheller, Lanny R. Sanner, Granville Woolman
Life of this patent
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Abstract
A forcing press for simultaneously pressing members onto opposite ends of a central member, such as railroad wheels onto an axle, wherein the press is prestressed by exerting balancing force against opposite ends of the axle prior to pressing the wheels onto the ends of the axle and including mechanism for simultaneously pressing the wheels onto the axle.
Claims12
In a hydraulic forcing press for press fitting first and second members onto coaxially aligned seats on opposite sides of a central member,
- a. a frame having spaced standards rigidly interconnected by parallel tie rods,
- b. said standards respectively supporting cylinder means in axial alignment with each other on an axis parallel to and between said tie rods,
- c. each of said cylinder means including first and second rams with said first rams being axially aligned and said second rams being axially aligned,
- d. first hydraulic means for moving the first rams inwardly toward each other against the opposite sides of the central member to hold said member immovably therebetween and prestress the tie rods and other frame members,
- e. means on the frame for supporting said first and second members adjacent to the seats on the opposite sides of the central member and between the central member and said second rams, and
- f. a second hydraulic means for moving the second rams inwardly against said first and second members to force them onto the seats on the opposite sides of the central member.
In a hydraulic forcing press for pressing the hubs of a pair of railroad car wheels onto the end portions of an elongated axle,
- a. a frame having a pair of horizontally spaced upright standards rigidly interconnected by upper and lower pairs of tie rods,
- b. a mechanism supported by the frame for holding the axle in a horizontal position extending longitudinally between said standards,
- c. mechanism supported by the frame for holding a railroad car wheel at each end of the axle with the wheel hub in spaced relation to the axle but in axial alignment therewith,
- d. a double-ended first hydraulic press means mounted on the standards for exerting inward endwise force against opposite endwise force against opposite ends of the axle so as to exert a spreading force on the standards to stretch and prestress the tie rods, and
- e. a second hydraulic press means on the frame adapted to move inwardly against a wheel hub and force it axially onto an end portion of the axle while the tie rods are in prestressed condition.
Dependencies are inferred from the claim text.