In fact, the development process of concrete mixer truck is the epitome of human progress and the development of construction industry.
人类最早的修建便是用树枝和石头搭建而成的，厥后又呈现了用土壤筑成的修建，这些修建的资料都比拟单一。
The earliest human buildings were made of branches and stones. Later, buildings made of soil appeared. The materials of these buildings are relatively single.
厥后跟着社会的前进和手艺的成长，为了让修建加倍坚忍，起头利用较庞杂的修建资料，比方混凝土。
Later, with the progress of society and the development of technology, in order to make the building more solid, more complex building materials, such as concrete, were used.
这也就须要利用东西来将由多种资料制成的混凝土夹杂搅拌，在20世纪初混凝土刚呈现时，利用搅拌混凝土仍是用人工搅拌这类较原始的方式，岂但费膂力并且效力还低，混凝土也是当场搅拌后利用，并不会长间隔运输。
This requires the use of tools to mix and mix the concrete made of various materials. When the concrete first appeared in the early 20th century, the more primitive method of mixing concrete or manual mixing is not only labor-intensive but also inefficient. The concrete is also used after local mixing and will not be transported for a long distance.
混凝土车为甚么要一向转？由于不转就闷罐，闷罐丧失就上万
Why does the concrete truck keep turning? Because if you don't turn, the tank will be stuffy, and the loss of stuffy tank will be tens of thousands
到了20世纪70年月，呈现了用电动员牢固式混凝土搅拌机，并且会用小推车来短间隔运输混凝土，效力也就前进了良多。
By the 1970s, there was a fixed concrete mixer driven by electricity, and it could transport concrete in short distance with trolleys, which greatly improved the efficiency.
世纪80年月，呈现了用卡车拉着的挪动式搅拌机。
In the 1980s, mobile mixers pulled by trucks appeared.
混凝土车为甚么要一向转？由于不转就闷罐，闷罐丧失就上万
Why does the concrete truck keep turning? Because if you don't turn, the tank will be stuffy, and the loss of stuffy tank will be tens of thousands
世纪90年月，起头将卡车与混凝土罐连系在一路，这便能够长间隔运输混凝土了，并且装卸都实现了主动化，打鱼注册送分 也获得了疾速的成长。
In the 1990s, trucks and concrete tanks began to be combined, so that concrete can be transported for a long distance, loading and unloading have been automated, and concrete mixer has also developed rapidly.
由于混凝土是由石头，砂子，水泥和水构成，若是运输进程中不转，并且不停的波动，石头就会下沉到最底下，砂子在中心，水泥和水在最下面，等运输到目标地就会呈现结块的景象，也是咱们常说的闷罐。
Because concrete is composed of stone, sand, cement and water, if it doesn't rotate and bumps constantly during transportation, the stone will sink to the bottom, the sand is in the middle, and the cement and water are on the top. When it is transported to the destination, there will be caking, which is also what we often call a stuffy tank.
混凝土车为甚么要一向转？由于不转就闷罐，闷罐丧失就上万
Why does the concrete truck keep turning? Because if you don't turn, the tank will be stuffy, and the loss of stuffy tank will be tens of thousands
是以，动弹既能够避免混凝土凝结，又可避免混凝土分层，并且还能够让混凝土夹杂得更平均。
Therefore, rotation can not only prevent concrete solidification, but also prevent concrete delamination, but also make concrete mix more evenly.