技术特点：
产品优势 / PRODUCT SUPERIORITY
球墨铁铸，一体成型；不锈钢棘轮经淬火处理，咬合严实，不脱齿；升降套筒锰钢材质，内部铜套螺母，较坚固；外部有警示线，防止使用时超出安全伸缩高度。
ductile iron casting, integrated forming;Stainless steel ratchet after quenching treatment, the bite is firm, do not take off teeth;The lifting sleeve is made of manganese steel with copper nut inside, which is strong.External warning line to prevent use beyond the safe expansion height.
使用原理/APPLICATION PRINCIPLE
螺旋机械千斤顶是手动起重工具种类之一，其结构紧凑，合理的利用摇杆的摆动，使小齿轮转动，经一对圆锥齿轮合运转，带动螺杆旋转，推动升降套筒，从而重物上升或下降。
Screw mechanical jack is one of the kinds of manual lifting tools, its compact structure, reasonable use of rocker swing, make the pinion rotation, by a pair of bevel gear operation, drive the screw rotation, promote the lifting sleeve, so that heavy objects rise or fall.
参数表 /PARAMETER LIST
