E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
121/17
E02D 7/06 (2006.01) B25D 9/02 (2006.01) B25D 9/14 (2006.01) B25D 17/24 (2006.01) E01C 23/12 (2006.01) E02D 7/10 (2006.01)
Patent
CA 1124591
IMPACT DEVICE Abstract of the Disclosure An impact device for producing impact pulses comprising a body with a movable ram having a front part transmitting the impact pulses and an extension housed in a power cylinder which is connected with the body and filled with a fluid medium under pressure for acting on the end face of the ram extension. There is also a unit ensuring the reverse stroke of the ram mounted on the body and interacting with the ram, and a unit for braking the ram on its idle stroke. According to the inven- tion, the braking unit is formed by a space in the body which opens on one side into the power cylinder and by a movable cylindrical member accommodated in said space. The cylindrical member has bosses separated by a space from each other. The end of the cylindrical member protrudes from the body into the power cylinder while the bosses are located inside the space so that they form a chamber filled with a fluid medium for the reverse stroke of the cylindrical member, and a chamber filled with fluid. The ram extension is provided with a boss interacting with the cylindrical member. The space has a throttling projec- tion inside, located between the bosses and forming, together with the surface of the cylindrical member, a gap for throttl- ing the fluid during braking of the ram on the idle stroke of the latter.
342537
Ermilov Nikolai P.
Fadeev Petr Y.
Fadeev Vladimir Y.
Korobkov Vladlen V.
Kulagin Rim A.
Institut Gidrodinamiki Sibirskogo Otdelenia Akademii Nauk Sssr
Marks & Clerk
Spetsialnoe Konstruktorskoe Bjuro Gidroimpulsnoi Tekhniki Sibirs
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