Qingdao Haosail Machinery Co., Ltd.

LC horizontal plate clamp Features:

• Dual drive clamping, heavy load stability. Different from the single gravity self-tightening of PPD, LC adopts the dual system of "manual pre-tightening + gravity self-tightening": manually rotate the screw to achieve initial clamping (pre-tightening force ≥5kN for 10-ton class), and gravity drives the secondary clamping device to further tighten during lifting, with a total clamping force of 30-45kN (10-ton load), which is 50% higher than PPD (PPD 10-ton class is about 20kN). The dual system ensures that thick plates (＞40mm) are not loose during lifting, while PPD may slip slightly due to insufficient self-tightening force in the scenario of thick plates ＞40mm.

• Wide adaptation, thick plate compatibility. The clamping thickness range is 8-80mm (PPD is 5-40mm), and ultra-thick plates (such as 60mm marine steel plates) can be adapted by adjusting the screw. The clamping contact area is 300-500cm² (10-ton class), which is 50%-100% larger than PPD, and the pressure per unit area is lower (≤0.1MPa), which is suitable for uniform force on thick plates to avoid local deformation. The adjustment range of the lateral positioning block spacing is extended to 100-500mm, which is more suitable for wide plates (such as 2-meter wide steel plates) than PPD's 50-300mm.

• Heavy-duty structure, strong impact resistance. The main body is made of Q460 high-strength alloy steel forging (PPD is Q355B welded structure), the wall thickness of key parts is 15-20mm (PPD is about 10mm), and the impact resistance is improved by 60%, which can withstand accidental collisions during plate hoisting (such as slight collisions with equipment in the workshop). The surface is treated with sandblasting + epoxy primer + topcoat, and is resistant to salt spray for 800 hours (PPD is 600 hours), adapting to more severe industrial environments.

• Precise control, controllable operation. The self-tightening unlocking function of PPD is retained, but a manual emergency unlocking device is added: in case of emergencies (such as plate jamming), the clamping device can be forcibly loosened by a wrench, which is more flexible than the pure gravity unlocking of PPD. The clamping height is ≤200mm (PPD≤150mm), which is slightly higher but compatible with thick plate stacking. The price is 30%-40% higher than the PPD with the same load.

LC horizontal plate clamp Typical Applications:

• Heavy machinery manufacturing. 80mm thick steel plates (10-15 tons) are hoisted for heavy machine tool beds. LC's dual-drive clamping ensures that the steel plates are stable during transportation, avoiding displacement caused by vibration, and can complete 4-5 precise alignments per hour (PPD is 30% less efficient in thick plate scenarios); large press frame plate handling (8-12 tons), wide positioning blocks are suitable for 2-meter wide steel plates, and dual-system clamping prevents side slip.

• Shipbuilding and marine engineering. 20-60mm marine high-strength steel plates (10-15 tons) are hoisted in shipyards. LC's salt spray resistance adapts to the humid environment of the workshop, and dual-drive clamping achieves precise docking of plates during hull segment assembly (deviation ≤3mm); offshore platform steel structure thick plates (50-80mm) are transported. The heavy structure resists the bumps and shocks of marine transportation and is more suitable for ocean-going operations than PPD.

• Large-scale steel structure projects. Super high-rise building steel columns are hoisted with 50mm thick alloy steel plates (8-12 tons). The LC double clamping system ensures that the steel plates remain motionless during high-altitude hoisting, and the manual pre-tightening function is suitable for the complex hoisting environment of the construction site; the wide clamping surface prevents the thick plates from bending due to their own weight during the transportation of bridge steel structure box beam plates (60-80mm), and improves the installation accuracy.