Global Patent Index - EP 0169616 A1

EP 0169616 A1 19860129 - Derrick crane for dredgecraft.

Title (en)

Derrick crane for dredgecraft.

Title (de)

Davit für ein Baggerschiff.

Title (fr)

Bossoir pour bateau de dragage.

Publication

EP 0169616 A1 19860129 (EN)

Application

EP 85201196 A 19850715

Priority

NL 8402240 A 19840715

Abstract (en)

The invention relates to a derrick-crane for a dredging vessel, having a compact operating mechanism and a hydraulic system integral with the derrick-crane and which is completely independent of the hydraulic system of the vessel on which the derrick-crane has been installed. According to the invention therefore there is provided on the one hand a hydraulic cylinder (15) which is completely accomodated within the body of the derrick-crane in its rest position and on the other hand is provided with a hydraulic-medium supply tank (34) and a pump (35) which is affixed between the supporting feet (11, 11a) and driven by an electric pump-motor (19) which can be connected to vessel's electrical system. In addition hereto, the crane's body carries an hydraulically-operated swell-compensator (22-26) on its rear side and which is also connected to its own hydraulic system and from which the displacable cable-sheave (26) moves vertically downward to a maximum payout distance (L). The hoisting winch (21) is affixed to the external underside of the derrick-crane.

IPC 1-7

E02F 3/90; B63B 23/10; B66C 23/52; B66C 23/54

IPC 8 full level

B63B 23/10 (2006.01); E02F 3/90 (2006.01)

CPC (source: EP)

B63B 23/10 (2013.01); E02F 3/905 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0169616 A1 19860129; EP 0169616 B1 19880928; DE 3565294 D1 19881103; DE 8434738 U1 19850314; NL 8402240 A 19860203

DOCDB simple family (application)

EP 85201196 A 19850715; DE 3565294 T 19850715; DE 8434738 U 19841127; NL 8402240 A 19840715