Coal mine tunneling support device

The utility model discloses a coal mine tunneling support device. The device comprises a first inverted U-shaped frame, the front end and the rear end of the lower side of the first inverted-U-shapedframe are fixedly connected with the left ends of two transverse rods correspondingly. The right ends of the two transverse rods are fixedly connected with the front end and the rear end of the lowerside of the second inverted-U-shaped frame correspondingly. Universal wheels are mounted at the left and right ends of the lower surface of the cross rod; three first jacks are fixed to the upper surface of the first inverted-U-shaped frame in the front-back direction. The telescopic ends of the three first jacks are rotationally connected with the left ends of the lower surfaces of the three positioning arc-shaped plates through hinges correspondingly, the three second jacks are fixed to the upper surface of the second inverted-U-shaped frame in the front-back direction, and the coal mine tunneling supporting device i