Cable traction tension overload protection device for coal mining machine in coal mine

• Main Authors: ZHOU GUANGJIAN, SUN XU, ZHANG RONGQIU
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; EARTH DRILLING; ELECTRICITY; FIXED CONSTRUCTIONS; GENERATION; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES; MINING; MINING OR QUARRYING

The utility model discloses a cable traction tension overload protection device for a coal mining machine in a coal mine, which comprises a mounting box and a cable, two groups of fixed shells are arranged in the mounting box, the fixed shells are symmetrically distributed, fixed rods are welded in the fixed shells, a first spring is sleeved on each fixed rod, a second spring is sleeved on each fixed rod, and the second spring is sleeved on each fixed rod. A first fixing block is arranged at the right end of the fixing shell, a second fixing block is arranged at the right end of the fixing shell, thrust is generated on the second fixing block when the tensile force borne by the cable is suddenly increased, so that the second fixing block moves to push the first fixing block, a first spring is compressed through the first fixing block, and then a second spring is compressed through the second fixing block. Friction force can be generated in the moving process of the first fixing block and the second fixing blo