Rotating shaft braking device

[0028] A rotating shaft braking device, which includes a braking cylinder 1, a rotating shaft 4 and a centrifugal mechanism; the rotating shaft 4 is inserted into the braking cylinder 1 and penetrates both ends of the braking cylinder 1, and the rotating shaft 4 is rotatably arranged on the braking cylinder 1; the centrifugal mechanism is rotatably arranged in the brake cylinder 1 and sleeved on the rotating shaft 4; the centrifugal mechanism includes a slider 1 5, a slider 2 8 and a number of friction blocks 2; the slider 1 5 The slider 2 is slidably sleeved on the rotating shaft 4 and moves along the axial direction of the rotating shaft 4; the top of each friction block 2 is used to contact the inner wall of the brake cylinder 1, and the bottom of each friction block 2 is hinged with two connecting The rod 3 and the two connecting rods 3 are hinged with the slider one 5 and the slider two 8 respectively;

[0029] like figure 1 and 2 As shown, the upper ends of the two connec

[0040] This embodiment is basically the same as the first embodiment, the difference is that the spherical surface of the ball 9 is in point contact with the inner wall of the groove 10 . like Figure 5As shown, the cross-section of the shaft section where the slider is installed is "cross"-shaped; the cross-sectional shape of the groove 10 is "V"-shaped, and the balls 9 are in point contact with both sides of the "V" shape; The point contact with the inner wall of the groove 10 can reduce the friction between the ball 9 and the groove 10 , which is more favorable for the slider to move on the groove 10 .