EP 1950418 A1 20080730 - A LUBRICATING ARRANGEMENT FOR CONCRETE PISTON
Title (en)
A LUBRICATING ARRANGEMENT FOR CONCRETE PISTON
Title (de)
SCHMIERANORDNUNG FÜR EINEN BETONKOLBEN
Title (fr)
SYSTÈME DE LUBRIFICATION POUR PISTON DE POMPE À BÉTON
Publication
Application
Priority
- CN 2007000329 W 20070129
- CN 200610032300 A 20060925
Abstract (en)
The invention relates to a lubricating apparatus for concrete piston, comprising a link (4), a grease injecting piston (6) and a grease adding valve (15). One end of the link (4) is connected with the concrete piston (3) arranged in the concrete transport cylinder (2), while the other end thereof is connected with the main oil cylinder (5) arranged in the water tank (1). A cavity is arranged inside the link (4). The grease injecting piston (6) is arranged in the cavity and separates the cavity into a grease storing cavity (8) and a pressurizing cavity (9). The grease adding valve (15) is communicated with the grease storing cavity (8) provided with a grease outlet. The pressurizing cavity (9) is communicated with a pressurizing mechanism (7) through a first one-way valve (14).
IPC 8 full level
F04B 53/18 (2006.01)
CPC (source: EP)
F04B 15/02 (2013.01); F04B 53/18 (2013.01)
Citation (search report)
See references of WO 2008037147A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1950418 A1 20080730; CN 100460671 C 20090211; CN 1924354 A 20070307; WO 2008037147 A1 20080403
DOCDB simple family (application)
EP 07702224 A 20070129; CN 200610032300 A 20060925; CN 2007000329 W 20070129