At last,a new double-welding machine which can adjust the valve core and the gesture of welding torch in order to fit different routines and speeds were designed,which can improve.

Analysis on displacement in high water level operation period of Longyangxia dam;

This paper starts from some aspects such as overall stability,displacement and so on.

The horizontal deflection of retaining wall,the earth s settlement behind the wall,and the distribution of earth s plastic zone are calculated and discussed.

According to the requirement and pump parameter of wildhaber-novikov gear,using stepped double arc tooth profile novikov gears,this article designs the shape of the tooth,analyzes the influence of deflection to the tooth,and builds up the digital model of wildhaber-novikov gear.

Analysis on Initial Abnormal Deformation on Right-sided Bank Lateral Displacement in Dam Top of Yunfeng Hydraulic Power Plant;

As fuzziness of mechanic parameters of Duncan E-B model for rockfill is considered, the parameters of rockfill material such as K、n、R_f、K_b、m are supposed as trigonometric fuzzy number, and fuzzy finite element method is employed for computing and analyzing fuzzy deformation field of concrete face rockfill dam (CFRD) under the different horizontal intercept.

Design of clamp and positioner of arc welding robot flexible workstation for sliding doors;

Usage and maintenance of welding and cutting machines(79) ——Typical use example of electrode dry oven,positioner,manipulator;

The coordinated motion of arc-robot and positioner in the synchronized workstation was studied and the mathematical model was derived in this paper.

The optimization of the gear modification coefficient of the dryer decelerator in paper machine;

Method of selecting modification coefficient of involute internal gear with zero-tooth-difference mechanism;

Modification coefficient choose of the involute planetary gear drive with small teeth difference based on CAD;