论文部分内容阅读
混凝土泵车早在70年前就已发明,但是由于混凝土泵的分配阀和液压系统一直没有取得突破性的进展,所以长期以来没有得到广泛应用和推广。近十几年来泵的结构形式和制造工艺不断改进,尤其是S形摆管分配阀的出现,使阀门堵塞故障大为减少。而带有布料杆的泵车问世,又解决了混凝土的摊铺浇灌,并扩大了泵的使用范围,使混凝土泵在地下工程,工业与民用建筑及高层施工中有了较大的发展。意大利CIFA混凝土输送泵车是一种把混
Concrete pump trucks were invented as early as 70 years ago, but they have not been widely used and promoted for a long time because the distribution pump and hydraulic system of concrete pumps have not made breakthrough progress. In the past ten years, the structure and manufacturing process of the pump have been continuously improved, especially the appearance of the S-shaped pendulum pipe distribution valve, which greatly reduces the number of valve plugging failures. The introduction of pump trucks with distribution poles solved the paving and pouring of concrete, and expanded the scope of use of the pumps, making the concrete pump more developed in underground engineering, industrial and civil buildings and high-rise construction. Italian CIFA concrete pump truck is a mix