초록 ▼

The hydropneumatic jack comprises a tubular body (14) closed at one end and open at the other end. A hollow rod (9) is slidably mounted in the body (14) in a sealed manner and in the rod is formed a first chamber (18) containing a freely slidable piston (19) which divides the chamber into two compar

The hydropneumatic jack comprises a tubular body (14) closed at one end and open at the other end. A hollow rod (9) is slidably mounted in the body (14) in a sealed manner and in the rod is formed a first chamber (18) containing a freely slidable piston (19) which divides the chamber into two compartments (18a, 18 b) which are sealed off from each other, a second chamber (23) being defined between a transverse end wall (21) constituting the end of the hollow rod (9) and the inner wall of the body (14). The transverse end wall (21) is provided with a nozzle (22) putting the second chamber (23) in communication with the neighbouring compartment (18b) of hollow rod (9). The compartment (18b) and the second chamber (23) are filled with a hydraulic liquid under pressure and the second compartment (18a) is filled with a pressurized gas. This jack automatically and instantaneously corrects the decreases in tension of the track (1) in the static state, subsequent to wear or expansion of the track and rollers.

대표청구항 ▼

A hydropneumatic jack for articulated tracked vehicles, said device comprising a tubular body having a closed transverse end and an open end opposite the closed end, a hollow rod which is slidably mounted in the body in a sealed manner and defines a first chamber containing a freely slidable piston

A hydropneumatic jack for articulated tracked vehicles, said device comprising a tubular body having a closed transverse end and an open end opposite the closed end, a hollow rod which is slidably mounted in the body in a sealed manner and defines a first chamber containing a freely slidable piston which divides the chamber into two compartments which are sealed off from each other, the hollow rod having a transverse end wall, a second chamber being defined between the transverse end wall of the hollow rod and the closed transverse end of the body, said transverse end wall being provided with a nozzle which puts the second chamber in communication with a neighbouring compartment of said two compartments of the hollow rod, a hydraulic liquid under pressure filling said neighbouring compartment and said second chamber, and a pressurized gas filling a second compartment of said two compartments, said jack further comprising a tubular case having a closed end wall and being pen at an opposite end of the case, the body being slidable in the case in a sealed manner, a third chamber being defined between the closed end wall of the case and the transverse end of the body, and grease filling the third chamber.