EP 1727980 B1 20080514 - DEVICE AND METHOD FOR CONTROLLING A TWO-CYLINDER THICK MATTER PUMP
Title (en)
DEVICE AND METHOD FOR CONTROLLING A TWO-CYLINDER THICK MATTER PUMP
Title (de)
VORRICHTUNG UND VERFAHREN ZUR STEUERUNG EINER ZWEIZYLINDER-DICKSTOFFPUMPE
Title (fr)
DISPOSITIF ET PROCEDE DE COMMANDE D UNE POMPE A PATES A DEUX CYLINDRES
Publication
Application
Priority
- EP 2005002895 W 20050318
- DE 102004015415 A 20040326
Abstract (en)
[origin: WO2005093252A1] The invention relates to a device and a method for controlling a two-cylinder thick matter pump comprising delivery pistons that are actuated in a push-pull manner by means of a hydraulic reversing pump (6) and hydraulic drive cylinders controlled by said pump. For each pressure stroke, the delivery cylinders (50, 50') are connected to a delivery line (58) by means of a pipe junction (56). At the end of each delivery stroke in the delivery cylinders (50, 50'), a reversal process of the pipe junction (56) and the reversing pump (6) is triggered. The aim of the invention is to ensure a reliable operation of the pump, even in the event of a breakdown of switching and pressure sensors (20, 22, 24). To this end, during the calibration of the concrete pump and/or during the operation of the pump, the expected length of the stroke of the pistons (8, 8') in the drive cylinders (5, 5') is measured and recorded, the stroke time of each delivery stroke is monitored and compared with the expected stroke duration, and the reversing pump (6) is respectively pivoted, reversing the flow, and/or the pipe junction (56) is reversed when the stroke time exceeds the expected stroke duration by a pre-determined value. The output signals of a pressure sensor (24) connected to the reversing pump (6) or cylinder switching sensors (20, 20') arranged on the working cylinders can also be evaluated in order to trigger a reversal process.
IPC 8 full level
F04B 7/02 (2006.01); F04B 9/117 (2006.01); F04B 15/02 (2006.01); F04B 49/06 (2006.01)
CPC (source: EP KR US)
F04B 7/02 (2013.01 - KR); F04B 7/0241 (2013.01 - EP US); F04B 9/00 (2013.01 - KR); F04B 9/1178 (2013.01 - EP US); F04B 15/00 (2013.01 - KR); F04B 15/023 (2013.01 - EP US); F04B 2201/0201 (2013.01 - EP US); F04B 2203/0903 (2013.01 - EP US); Y10S 417/90 (2013.01 - EP US)
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005093252 A1 20051006; AT E395512 T1 20080515; AT E413529 T1 20081115; CN 100595436 C 20100324; CN 1788158 A 20060614; DE 102004015415 A1 20051013; DE 502005004119 D1 20080626; DE 502005005923 D1 20081218; EA 007369 B1 20061027; EA 200600261 A1 20060630; EP 1727980 A1 20061206; EP 1727980 B1 20080514; EP 1906012 A1 20080402; EP 1906012 B1 20081105; ES 2306109 T3 20081101; ES 2316137 T3 20090401; JP 2007530854 A 20071101; JP 2011153626 A 20110811; JP 5028255 B2 20120919; KR 101187523 B1 20121002; KR 20060127382 A 20061212; UA 81964 C2 20080225; US 2007196219 A1 20070823; US 7611331 B2 20091103
DOCDB simple family (application)
EP 2005002895 W 20050318; AT 05716191 T 20050318; AT 07119583 T 20050318; CN 200580000377 A 20050318; DE 102004015415 A 20040326; DE 502005004119 T 20050318; DE 502005005923 T 20050318; EA 200600261 A 20050318; EP 05716191 A 20050318; EP 07119583 A 20050318; ES 05716191 T 20050318; ES 07119583 T 20050318; JP 2007504320 A 20050318; JP 2011084399 A 20110406; KR 20067009229 A 20050318; UA A200601530 A 20050318; US 59221705 A 20050318