The hydraulic shear is a typical intermittent high-flow hydraulic system, which is suitable for accumulator energy-saving circuit; the oil in the accumulator is compressed to store energy during shearing, and at the same time acts as a buffer, and serves as an auxiliary power source to push the shears back during the return stroke.
The use of accumulators in hydraulic shears can not only reduce the flow of the oil pump and the power of the motor, and avoid excessive temperature rise of the hydraulic oil, but also because the accumulator quickly discharges the oil into the cylinder, which improves the operating speed of the tool post, Significantly shorten the time required for a shearing cycle and increase the shearing times of the hydraulic shearing machine.
In the hydraulic pendulum shears and hydraulic guillotine shears produced by the current shear manufacturers, the accumulator return is generally used. For some occasions that require a relatively high number of shears, the accumulator has played a huge role. For example, the hydraulic shears used in the thick plate uncoiling and leveling line have high requirements for the number of shears, so the return stroke is used The return stroke of the accumulator was improved, and the power of the oil pump and the motor was increased to meet the requirements, and good results were achieved.
The parameter selection of the accumulator largely affects the performance of the hydraulic system, so it is necessary to pay attention to its rationality. The parameters of the accumulator mainly include effective volume, inflation pressure, working pressure and so on.
