What should I do if the 100-ton hydraulic machine suddenly loses its load?

1. 1.Reduce the amount of elastic energy stored in the liquid. The elastic energy stored in the liquid is proportional to the height of the liquid in the working cylinder, so a thick pad can be added between the worktable and the lower mold of the four-column hydraulic machine to move the working stroke of the moving crossbeam upward and reduce the height of the liquid column in the working cylinder. There is also a movable pad between the piston of the working cylinder and the moving crossbeam. When the four-column hydraulic machine moves down during the idle stroke, the piston and the crossbeam descend together. After contacting the workpiece, the piston rises first before pressurizing. At this time, the auxiliary hydraulic cylinder acts to insert the movable pad between the piston and the moving crossbeam. Reducing the pressure of the working medium can also reduce the energy stored in the liquid.
2. 2.Release energy through other channels. That is, at the moment when the 100-ton four-column hydraulic machine suddenly loses its load, part of the high-pressure liquid in the working cylinder is quickly drained to reduce the energy to be released. This method is more effective when the liquid pressure is high, but it requires a higher sensitivity of the corresponding electro-hydraulic control valve, and it should not cause large vibrations in the drain pipe.
3. 3.Absorb energy to reduce shock. A buffer pad is set at the bottom of the 100-ton hydraulic machine. When the material is about to be cut, at the moment of cutting, the moving part contacts the buffer pad, thereby consuming part of the energy on compressing the buffer pad. The buffer pad can be a hydraulic buffer or a gas-liquid buffer.