Cooling device for hydraulic oil cylinder

The cooling device comprises two clamping columns, one ends of the two clamping columns are hinged, the other ends of the two clamping columns are fastened through bolts, the sections of the clamping columns are semicircular, arc-shaped grooves are formed in the inner surfaces of the clamping columns, elastic clamping pieces are arranged in the arc-shaped grooves in the two ends of the clamping columns, and the elastic clamping pieces can contract outwards through extrusion of the hydraulic oil cylinder. V-shaped grooves communicated with the arc-shaped grooves are further formed in the clamping columns, an air blower is arranged at the outer end of at least one clamping column, and the air outlet end of the air blower is communicated with the V-shaped grooves of the clamping columns through an air pipe. The radiator is convenient to install, can be matched with hydraulic oil cylinders with different diameters, and is good in radiating effect. 本实用新型公开了一种用于液压油缸的降温装置，包括一端铰接的两个卡柱，两卡柱的另一端通过螺栓紧固，卡柱的截面呈半圆形，卡柱的内表面设有