| 摘要 |
<p>There is described a hydraulic connection assembly with a pressure discharge control, which is positionable between an onboard hydraulic circuit of an engineering vehicle and a removable hydraulic equipment. The hydraulic assembly comprises a one-piece body (1, 51) attachable to the outside of the hydraulic machine near the hydraulic equipment and provided with at least one input hydraulic linkage (4, 5; 52) connectable to a pressure line of the hydraulic circuit of the vehicle, at least one coupling (7, 8; 54) suitable for the connection with a feeding input of a removable equipment and a pressure discharge hydraulic linkage (6; 53) connectable to a draining line, at least one normally closed discharge valve (21, 22; 55) positioned between said linkage (4, 5; 52) to a pressure line and said linkage (6; 53) to a draining line and a pressure discharge control (35; 56) operable so as to cause the opening of said at least one normally closed valve (21, 22; 55) for the connection of the above said pressure line to the draining line for discharging the pressure existing in the hydraulic circuit of the vehicle. The discharge valve (21, 22; 55) is of the sliding piston type (31) and the pressure discharge control (35; 56) is formed by a lever (35) rotatable around a transversal axis (36) between a stable resting position and a working position in which a side (37) of said lever (35) exerts an axial thrust on said sliding piston (31) for the opening control of said valve (21, 22; 55).</p> |
