對于中閥輥道，除了要求對中之外，為了進行精軋人口溫度控制，要求軋件能在中間輥道上往復(fù)運動，并且為了提高末架粗軋機和精軋機的速度控制精度，以前常用的集體傳動方式正在被單獨傳動方式代替。

For the valve roller, in addition to the requirements of, in order to finish rolling temperature  requirements of population, in the middle of the roller on the reciprocating motion, and in order to improve the frame at the end of roughing mill and finishing mill speed  precision, instead of the commonly used collective transmission mode being separate transmission mode.

皮帶輸送機的常規(guī)設(shè)計方法所存在的問題帶式輸送機常規(guī)設(shè)計方法實際上是一種安全或是偏于保守的設(shè)計方法。例如。選用的輸送帶安全系數(shù)、運行阻力系數(shù)偏大，從而造成選用的電動機功率過大，帶寬過寬或是抗拉強度要求較高。

The conventional design method of belt conveyor is a safe or cervative design method. For example. The safety factor and the running resistance coefficient of the selected conveyor belt are too large, resulting in excessive power selection, wide bandwidth or high tensile strength.

皮帶輸送機的結(jié)構(gòu)參數(shù)的優(yōu)化方法皮帶輸送機的結(jié)構(gòu)雖然受到了種種工況的限制，而輸送機的工作狀態(tài)是處于滿載正常運行的狀態(tài)，在常規(guī)設(shè)計計算方法完成后，可以進行采用離散變量優(yōu)化的網(wǎng)絡(luò)法，對帶式輸送機參數(shù)進行優(yōu)化設(shè)計 。

Optimization of the structural parameters of belt conveyer, the structure of belt conveyer is restricted by various working conditi, and the working state of the conveyor is in a state of full load. After the completion of the conventional design calculation method, the network method of discrete variable optimization can be used to optimize the parameters of the belt conveyor. Chemical design.