Title:
HYDRAULIC DRILLING MACHINE
Document Type and Number:
WIPO Patent Application WO/1989/011022
Kind Code:
A1
Abstract:
A hydraulic drilling machine comprises a drilling instrument (1) connected to a hydraulic motor (3), a hydraulic striker (4) connected through a hydraulic distributor (15), to a pressure line (11) and a drain line (21), and a device (16) for forced suction of the liquid from the working chamber of the hydraulic striker (4) during its idle stroke. The device (16) comprises a mixing chamber (17) connected to the drain line of the hydraulic striker, an ejector (18) connected to the drain line of the hydraulic motor (3), and a diffuser (19) which is connected to the drain line (21) and in which is located the nozzle of the ejector (18).
Inventors:
NEROZNIKOV JURY IVANOVICH (SU)
RUDAKOV IVAN PETROVICH (SU)
FANSHTEIN VALENTIN NATANOVICH (SU)
MEDYANIK VLADIMIR ALEXANDROVIC (SU)
GAVRILOVA VALENTINA VLADIMIROV (SU)
RUDAKOV IVAN PETROVICH (SU)
FANSHTEIN VALENTIN NATANOVICH (SU)
MEDYANIK VLADIMIR ALEXANDROVIC (SU)
GAVRILOVA VALENTINA VLADIMIROV (SU)
Application Number:
PCT/SU1989/000095
Publication Date:
November 16, 1989
Filing Date:
April 14, 1989
Export Citation:
Assignee:
KARAGANDINSKIJ POLT INSTITUT (SU)
International Classes:
A01J7/00; A01J5/01; E21B1/26; E21B6/00; E21B6/04; E21B19/08; E21B19/086; E21B44/06; G01F11/28; G01F23/74; (IPC1-7): E21C1/12
Foreign References:
| US4068727A | 1978-01-17 | |||
| SU337485A1 | ||||
| SU1181557A3 | 1985-09-23 |
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