A cylinder rod is mounted to the top of the platen extending through the press crown and the catcher’s housing. The housing is fixed to the machine crown/frame and surrounds the rod, which is free to move during normal operation. Wedge-shaped clamping jaws inside the housing are held with hydraulic or pneumatic pressure to keep the wedges in position so that the rod can move freely.

If hydraulic or pneumatic system pressure fails, or if a rope, chain, belt, or toothed drive breaks, the unit prevents the load from crashing down at any position of the descent. As downward force increases, so does the unit’s clamping force. When hydraulic or pneumatic pressure is restored in conjunction with the equivalent reverse movement of the rod, the clamping wedges are released.

铸件展--2016第十七届广州国际铸件产品及工艺技术研讨展-广州巨浪展览策划有限公司 -The 17^th China(Guangzhou )Int’l Casting product Exhibition