本厂主要产品：铁柱、铆钉、轴心、螺柱、弹簧紧固件。
Main products: iron studs, rivets, axes, thread studs and spring fasteners.
当再次按钮点动滑齿柱转齿环和滑齿套因弹簧上升复位。
When the button is pointed again the slide tooth column, the rotating tooth ring and the slide tooth sleeve return because of spring.
在分析过程中，利用机动法对温克尔地基板（弹簧支撑板）进行了塑性极限分析，得出了煤柱抗压强度的临界值。
In the plastic limit analysis, the wrinkler's plate is smartly analyzed in yield-line theory to get the critical compression strength of the coal pillar.
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