公开(公告)号：EP0971127A1

公开(公告)日：2000-01-12

申请号：EP99113575.7

申请日：1999-07-08

Applicant: Cifa S.P.A.

Inventor： Moretti, Giorgio ,  Cipolla, Davide ,  Arpini, Roberto

IPC: F04B15/02

CPC classification number: F04B15/02 ,  F04B2201/0202

Abstract: The invention concerns a concrete pump, of the type comprising a pair of pumping cylinders alternatively operating under the control of a backflow hydraulic pump - to draw concrete from a hopper and feed it, by way of a rocking valve (S-valve), into the transport and delivery duct - wherein said cylinders are provided with stops to control the starting movement of the S-valve. According to the invention, the speed of the piston stroke of said cylinders is modulated by being increased in the initial length of said stroke, and electronic means are provided to control said speed according to the maximum concrete capacity allowed by the pump.

Abstract translation: 本发明涉及一种混合泵，其类型包括一对泵送缸，其可在回流液压泵的控制下交替地操作，以从料斗中抽出混凝土并通过摇动阀（S型阀）将其送入 运输和输送管道 - 其中所述气缸设置有止动件以控制S阀的起动运动。 根据本发明，通过在所述行程的初始长度上增加来调节所述气缸的活塞行程的速度，并且提供电子装置以根据泵允许的最大混凝土容积来控制所述速度。

公开(公告)号：EP0971126A1

公开(公告)日：2000-01-12

申请号：EP99113573.2

申请日：1999-07-08

Applicant: Cifa S.P.A.

Inventor： Moretti, Giorgio ,  Cipolla, Davide ,  Arpini, Roberto

IPC: F04B15/02

CPC classification number: F04B15/02 ,  F04B2201/0207

Abstract: The invention concerns a concrete pump, of the type comprising a pair of pumping cylinders alternatively operating under the control of a backflow hydraulic pump - to draw concrete from a hopper and feed it, by way of a rocking valve (S-valve), into the transport and delivery duct - wherein said cylinders are provided with stops to control the advance of the starting movements of the S-valve and wherein the motion of the pistons in the cylinders is reversed in respect of the moment in which said pistons reach the top dead center. According to the invention, said stops are located in the position for the most efficient working with the highest number of pumping cycles per minute, and electronic means are provided to set said advance time, by delaying the starting movement of the S-valve and the reversal of the backflow hydraulic pump according to the actual number of pumping cycles per minute.

Abstract translation: 本发明涉及一种混合泵，其类型包括一对泵送缸，其可在回流液压泵的控制下交替地操作，以从料斗中抽出混凝土并通过摇动阀（S型阀）将其送入 运输和输送管道 - 其中所述气缸设置有止动件以控制S型阀的起动运动的进展，并且其中活塞在气缸中的运动相对于所述活塞到达顶部的时刻反转 死中心 根据本发明，所述止动件位于用于以每分钟最高数量的泵送循环最有效的工作的位置，并且提供电子装置以通过延迟S阀的启动运动和 根据每分钟抽水循环的实际次数反向回流液压泵。