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Brake system for mining conveyor

  • US 5,513,728 A
  • Filed: 04/19/1994
  • Issued: 05/07/1996
  • Est. Priority Date: 04/19/1994
  • Status: Expired due to Term
First Claim
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1. A brake apparatus for use with a rotatable mechanical load, said brake apparatus comprising:

  • a longitudinal shaft having a first end portion and a second end portion;

    a stationary housing rotatably supporting said longitudinal shaft such that said first end portion extends for coupling to said mechanical load;

    a braking assembly having at least one first frictional member fixedly connected to said longitudinal shaft and at least one second frictional member fixedly connected to said stationary housing, said first frictional member and said second frictional member engagable to apply a braking torque to said longitudinal shaft;

    an engaging mechanism responsive to introduction of actuation fluid into a fluid chamber for selectively releasing the braking assembly and thereby lessening the braking torque applied to said longitudinal shaft;

    a biasing mechanism for causing frictional engagement of said first frictional member and said second frictional member in the absence of actuation of said engaging mechanism to apply a predetermined braking torque to said longitudinal shaft; and

    wherein the actuation fluid is introduced into said fluid chamber through a fluid inlet located such that said engaging mechanism will be urged by said biasing mechanism when wear of said braking assembly has exceeded a preselected threshold to a position wherein said actuation fluid cannot be introduced into said fluid chamber.

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