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[CN 201720972723.7] Four-column double-acting hydraulic press
[CN 201720972723.7] Title of a four-column double-acting hydraulic press: Application number of a four-column double-acting hydraulic press: CN 201720972723.7 Applicant: Ningbo Chenli Hardware Technology Co., Ltd. Application Date: 2017-8-4 Patent Type: Utility Model The utility model discloses a four-column double-acting hydraulic press, which solves the problem that the hydraulic cylinder often causes its own oil temperature to rise when working. When the oil temperature exceeds a certain degree Celsius, the oil viscosity will become obviously thinner, the leakage increases and the oil film of each sliding part is destroyed, which aggravates the wear of hydraulic components and affects the normal operation of the hydraulic cylinder. The main points of the technical scheme are: the utility model relates to a four-column double-action hydraulic machine comprising a temperature detection device, a voltage comparison device preset with a first temperature reference signal and coupled to the temperature detection device to receive the temperature detection signal and compare the first temperature reference signal with the temperature detection signal and output a voltage comparison signal, and a cooling device coupled to the voltage comparison device to receive the voltage comparison signal and respond to the voltage comparison signal to achieve cooling, it can effectively reduce the oil temperature of the hydraulic cylinder and maintain the normal operation of the hydraulic cylinder.
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