What large construction machinery were there in ancient China?

Machinery (English name: machinery) refers to the general name of machines and institutions. Machinery is a tool that can help people reduce difficulties or save labor. Things like chopsticks, brooms and tweezers can all be called machinery. They are simple machines. A complex machine is composed of two or more simple machines. These complicated machines are often called machines. From the point of view of structure and movement, there is no difference between mechanism and machine, which is generally called machinery.

Mechine from Machina and Mechine from Latin America originally meant "ingenious design". As a general mechanical concept, it can be traced back to ancient Rome, mainly to distinguish it from hand tools. In modern Chinese, the word "machinery" is a general term for English "Mechanism" and "machine". The characteristics of machinery are: machinery is a combination of artificial physical parts. There is definite relative motion between all parts of the machine. Therefore, machines can convert mechanical energy or accomplish useful work, which is the most basic concept in modern mechanical principles. The modern concept of machinery in China mostly comes from the word "machinery" in Japanese, and the definition of mechanical concept in Japanese mechanical application products is as follows (that is, it is called a mechanical machine that meets the following three characteristics).