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石油钻机刹车块是钻机中的主要易损件之一。钻机的主刹车是一种带式刹车,刹车时作用在刹带上的拉力从刹带的固定端(死端)的最大值逐渐减小到与刹把相连接的另一端(活端)的最小值,从而使得装在刹带上不同部位的各个刹车块上比压也是从死端到活端逐渐减小,一般相差5～12倍。显然,这必将导致各刹车块的磨损不均匀(死端大,活端小)。通常,当靠近死端的几块刹车块磨损严重而不能继续使用时,往往就将整副刹车带上的所有刹
Oil rig brake blocks are one of the major wearing parts in rigs. The main brake of the drilling rig is a kind of belt brake. The pulling force acting on the brake belt during braking gradually decreases from the maximum value of the fixed end (dead end) of the brake band to the other end (live end) connected with the brake lever Minimum, so that the brakes installed in different parts of the brakes than the pressure is from the dead end to the live end of the gradually reduced, the general difference of 5 to 12 times. Obviously, this will inevitably lead to uneven wear of the brake pads (large dead end, small live end). Normally, when several brake blocks close to the dead end wear out severely and can not continue to be used, the brake on the entire auxiliary brake belt