译文:
混凝土泵车是建筑行业的重要工具,随着国内商品混凝土行业和建设机械租赁业务的快速发展,施工规模和范围的扩大,另外西部大开发和东北老工业基地的相继开工建设,带动了混凝土输送机械的高速发展,混凝土泵车的市场空间也得到了进一步扩大。
我国混凝土泵车团体用户主要是年生产能力在30万立方米以上有资质的商品混凝土供应商、行业比较大的建设施工单位、各类有一定经济实力和经营规模的施工机械租赁企业、从原建设施工单位分离出来的设备管理部门等;个体用户主要是沿海发达地区的个体搅拌站和个体机械租赁部。目前在国内团体用户至少有800家以上,按国际常规每家5辆的规模,今后几年其泵车拥有量将会达到4000辆左右,再加上个体用户的1000辆,这个数字非常可观。
臂架技术是混凝土泵车的一项关键技术,过去一直为德国、美国等少数发达国家制造企业掌握。2003年,三一研制出56米臂架泵车,一举成为当时世界能够为生产这种长臂泵车的三家企业之一,使中国在泵车及臂架研发领域进入世界先进水平。目前,国内此类产品型谱和生产企业不断增加,产品性能、质量都在迅速提升。随着商品混凝土行业的发展,混凝土泵送机械规格更全,档次更高,泵车布料臂架朝更长的方向发展,由过去的37米占主流,逐步过渡到42~45米为主,47~56米同样受到市场青睐。
据专家介绍,随着工程进度的加快,泵送排量也有增大的要求,过去排量在每小时60~80立方米的占60%左右,现在排量要求每小时80~120立方米的工程越来越多,如杭州湾跨海大桥使用的混凝土泵,基本上都是排量每小时120立方米的。
目前,用户对混凝土泵的机动性要求越来越高,主要表现在泵车的市场需要增长很快。另外,车载泵的市场也市场也逐步活跃起来,三一、楚天、中联、鸿得利等厂家都有新品上市。目前,柴油机动力越来越多,不仅泵车和车载泵要求使用柴油机动力,单拖式泵的比例也逐步增大。
液压系统向集成方向发展,普遍采用开式系统及恒功率控制,特别是大流量的泵,开式系统具有油温低、可靠性高、维修方便等诸多优势。同时,全液压控制技术、计算机控制技术取得了突破性进展。如三一产品的全液压换向和计算机闭环控制技术已经广泛应用。泵送压力已经有了大幅度提高,现在已达到22Mpa,而且还有继续提高的趋势。同时,液压系统的压力也在不断提高,基本都32Mpa以上。因此,输送距离也在不断增加,{zd0}水平输送距离已超过2000米,{zd0}垂直泵送高度也可达500米以上。
提高设备的节能、环保性能也是一大趋势,风冷却逐步替代水冷却,发动机的排放标准提高;大多达到欧II或欧III标准。
进一步重视混凝土泵可靠性的研究,主要是对于高强度、大骨料、三级配混凝土的研究,现已能送混凝土的{zd1}坍落度只有20毫米,{zd0}骨料粒径可达80~120毫米。如三一HBT120A-1410D三级配混凝土泵,已成功地应用于三峡工程的施工。
除了设备的设计、制造等了长足的发展外,设备的使用与维护水平也得到了相应的提高,广大设备使用人员对混凝土泵送机械的原理、结构、操作及日常维护等越来越熟悉,使设备在施工过程中使用起来得心应手,发挥的作用越来越大。随着我国经济建设步伐的加快,许多大的工程建设项目相继上马,市场对混凝土机械的需求呈猛增势态。同时,国家已出台禁止城市市区在使用现场搅拌混凝土的政策,使混凝土泵、泵车、混凝土运输车和混凝土搅拌站等产品火爆起来。这些有利的外部条件,为混凝土泵送机械的发展提供了广阔的空间。
“ Energy-saving environmental lead the development direction of concrete pump”是由提供的国际水泵新闻,译文仅供参考。另外,中国化工泵网还提供相关产品搜索:、、、、等。
原文:
Concrete pump truck is an important tool in the construction
industry, with domestic commercial concrete industry and
construction machinery rental business in the rapid development,
construction, expansion of scale and scope, while developing the
western region and northeast old industrial base in the
construction have started to drive delivery of concrete the rapid
development of machinery, concrete pump market space has also been
further expanded. China concrete pump truck corporate
users are mainly in the annual production capacity of 300,000 cubic
meters of concrete products for more than qualified suppliers, the
construction industry, the construction of larger flats, have a
certain economic strength and scale of operation of construction
machinery leasing company, from the original construction units
have separate facilities management, etc.; individual users are
mainly in developed coastal areas of the individual mixing stations
and individual machinery rental department. Present in the domestic
corporate users there are at least 800 more, according to
international conventional 5 each the size of the next few years
will reach the pump has a capacity of about 4000, together with the
individual user's 1000, this figure is very impressive. Concrete
pump boom technology is a key technology, in the past has been
Germany, the United States and other developed countries, a few
manufacturers to master. In 2003, 31 developed a 56-meter boom pump
in one fell swoop became the world able to produce one of the three
long-arm pump, so that pump and the boom of China's R
& D into the world advanced level. At present, the
domestic-type spectrum and the production of such products
increasing number of companies, product performance, quality, all
increase rapidly. With the commercial concrete industry, concrete
pumping machinery specifications more comprehensive, higher-grade,
pump fabric toward a longer boom direction, 37 meters from the
past the mainstream though, a gradual transition to 42 ~
45 m-based , 47 ~ 56 meters also favored by the market. According
to experts, with the progress of the works to speed up, pumping
emissions have increased the requirements of displacement in the
past 60 to 80 cubic meters per hour, accounted for about 60%
emission requirements are now 80 to 120 cubic meters per hour, More
and more projects, such as the Hangzhou Bay Bridge using concrete
pumps are basically displacement of 120 cubic meters per hour.
Currently, users are increasingly demanding mobile concrete pumps,
mainly reflected in the pump market needs is growing rapidly. In
addition, the car market, the pump market has also gradually become
active again, 31, Chutian, the Alliance, and other manufacturers
have HONGDELI new listing. At present, diesel power, more and more
not only the pump and car pumps require the use of diesel power,
single-drag pump in proportion to gradually increase. The direction
of the hydraulic system to the integration of the development of
commonly used open-system and constant power control, especially
the large flow pump, open system with a low oil temperature, high
reliability and easy maintenance and many other advantages. At the
same time, all-hydraulic control technology, computer control
technology to achieve a breakthrough. Products such as 31
full-hydraulic closed-loop control commutation and computer
technology is already widely used. This has greatly increased
pumping pressures have now reached 22Mpa, but also continue to
improve the trend. At the same time, the hydraulic system pressure
is also rising more than basically 32Mpa. Therefore, the
transmission distance is also increasing the maximum level of
transmission distance of more than 2,000 meters, the maximum
vertical height of pumping up to 500 meters. To improve equipment energy efficiency, environmental
performance is also a major trend, the wind cooling gradually to
replace the water cooling, engine emission standards to improve;
most of Europe to reach Europe II or III standards. Greater
emphasis on the reliability of the study of concrete pumps,
primarily for high-intensity, large aggregate, three with concrete
research, is now able to send a minimum slump of concrete is only
20 mm, maximum aggregate size of up to 80 ~ 120 mm. If 31
HBT120A-1410D 3 with concrete pump, has been successfully applied
to the construction of the Three Gorges Project. In addition to
equipment design and manufacture has been made in the development,
use and maintenance of the level of equipment has also been a
corresponding increase, the majority of concrete pumping equipment,
use of personnel on the principles of machinery, structure,
operation and routine maintenance are getting more familiar with
the equipment to use in the construction process in handy to play a
growing role. With the accelerated pace of China's economic
construction, and many large construction projects launched in
succession, the market demand for concrete machinery surge in
momentum for submission. At the same time, the state has been
introduced to prohibit the use of urban areas on-site mixing of
concrete policies to enable the concrete pump, pump, concrete
trucks and concrete mixing stations and other products hot up.
These favorable external conditions for the development of concrete
pumping machine provides a broad space.
原文来源: