国产欧美在线精品第一区,边摸边吃奶边做视频,国产精品免费无码,亚洲一二三区视频,色综合伊人色综合网站无码,亚洲毛片不卡AV在线播放一区,精品人妻系列无码一区二区三区,国产偷国产偷亚洲高清日韩,h色在线观看网站,日韩精品内射视频免费观看

網(wǎng)站導航
Scissor grab

產(chǎn)品簡介:

The scissor grab extends the ends of the two jaw plates near the hinge point into a rope type force adding arm, and the two arms share a common one called the central hinge point. The opening action of the scissor grab depends on loosening the steel wire rope of the pulley block at the scissor arm and tightening the support rope. The closing action depends on tightening the steel wire rope of the pulley block and using the lever principle to increase the force, so that the jaw plate closes and grabs the material, and its closing torque gradually increases with the closing process. When grabbing the material, it is clean and does not leak material, It is mostly used in large bridge ship unloaders.

詳細信息

產(chǎn)品推薦