Hydraulic motor with shift transmission
AssigneeSauer-Danfoss Inc.
InventorAxel Widemann
Life of this patent
Estimating the term…
Abstract
A hydraulic motor (1), has an output shaft (3), a block cylinder (6), and high-pressure pistons (7) guided therein, and a block cylinder spring (9) and a valve plate (5). The block cylinder (6) exerts a contact-pressure force on the valve plate (5) by way of the charging pressure of the hydraulic oil in the block cylinder (6) and of the spring force of the block-cylinder spring (9). The contact-pressure force is counter-acted, when the hydraulic motor (1) is at a standstill, by a hydraulic pressure field which is built up on a surface (13) between the block cylinder (6) and the valve plate (5) via a valve device (12).
Claims6
A hydraulic motor for driving a non-synchronized transmission, comprising, a block cylinder (6) which encloses an output shaft (3) and in which high-pressure pistons (7) are guided;
- a block-cylinder spring (9) which is arranged between the block cylinder (6) and the output shaft (3);
- and a valve plate (5) which is located opposite the block cylinder (6);
- the block cylinder (6) exerting a contact pressure on the valve plate (5) on account of the charging pressure of the hydraulic oil in the block cylinder (6) and of the spring force of the block-cylinder spring (9), wherein, when the hydraulic motor (1) is at a standstill, a hydraulic pressure field oriented counter to the contact-pressure force is built up on a surface (13) between the block cylinder (6) and the valve plate (5) via a valve device (12).
Dependencies are inferred from the claim text.