STRIKING DEVICE - INST GIDRODINAMIKI SIBIRSKOGO

Title:

STRIKING DEVICE

Document Type and Number:

WIPO Patent Application WO/1991/000952

Kind Code:

A1

Abstract:

In a striking device the striking mechanism (1) is provided with a means (32) intended for its elastic resilient connection with the working machine and rigidly secured on a casing (3) of the striking mechanism (1) in a plane which is perpendicular to its longitudinal axis and passes through the stroke center (0). The first chamber (21) of a valve distribution mechanism (2) is connected to the discharge line (25) through an annular groove (23). Said annular groove (23) is made on the internal surface of the casing (3) of the striking mechanism (1), which forms an overflow chamber (13), and is located farther along the axis from the first chamber (4) than a channel (28) which is provided in said casing (3) to connect the overflow chamber (13) to the second chamber (22) of the valve distribution mechanism (2), whose inlet channel (30) contains a unidirectional restrictor valve (31). The working instrument (11) at "idle strokes" interacts with the casing (3) of the striking mechanism (1) through a hydraulic shock absorber (46).

Inventors:

FADEEV PETR YAKOVLEVICH (SU)
FADEEV VLADIMIR YAKOVLEVICH (SU)
KOROBKOV VLADLEN VIKTOROVICH (SU)
KULAGIN RIM ASMANOVICH (SU)
ERMILOV NIKOLAI PETROVICH (SU)
PODKORYTOV ANDREI GENNADIEVICH (SU)

Application Number:

PCT/SU1989/000189

Publication Date:

January 24, 1991

Filing Date:

July 11, 1989

Export Citation:

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Assignee:

INST GIDRODINAMIKI SIBIRSKOGO (SU)
SP K BJURO GIDROIMPULSNOI T (SU)

International Classes:

B25D9/14; B25D17/24; B25D17/28; E21B1/26; E21C37/24; (IPC1-7): B25D9/18; E21C3/20

Foreign References:

SU1078051A2	1984-03-07
US4784228A	1988-11-15
DE3443542A1	1986-06-05
GB1098288B

Other References: