Crane belongs to a kind of lifting machinery, is a kind of cycling, intermittent movement of machinery. A working cycle consists of lifting the object from the place where it is retrieved, then moving horizontally to the point where it is lowered, and then moving in reverse to return the object to its original position for the next cycle. Generally

Card machine is used for processing cotton fiber and chemical fiber, belonging to textile machinery. According to the spinning process, carding is an important process. The preceding process of the card is the combined opening and cleaning machine, and the following process is the drawing frame (general combing process) or the strip winding machine (combing process).

The crushing of feed raw materials is a very important link in feed processing. By crushing, the large total surface area of raw material particles per unit mass can be increased to increase the solubility of feed nutrients in animal digestive juices and improve the digestibility of animals. At the same time, the small size of pulverized raw materials has a very important impact on the difficulty of subsequent processes (such as granulation, etc.) and the quality of finished products. Moreover, the size of pulverized grain size directly affects the production cost.

Hot rolling mill is a steel rolling equipment for producing hot rolled coil. Hot rolling mill usually includes: step continuous heating furnace, high pressure water descaling, four-high reversible roughing mill with vertical roll, flying shear, finishing mill group composed of six four-high mills arranged in series, coiler, laminar-flow cooling device

Constant pressure for water pump belongs to the constant pressure water supply equipment, has a subsidiary in internal small pump function, no more than a small pump in water water yield have attached small pump water supply pressure, when the water more than small pump water yield, through the pressure sensors' inner fluid pressure drop, after analysis of the microcomputer controller output signal to frequency converter according to the results of the computation again, frequency is controlled by inverter main pump running and according to the water pump sets, thus greatly saving energy and water saving.