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Slip-slide detector system for railway car wheels

  • US 4,071,282 A
  • Filed: 02/04/1976
  • Issued: 01/31/1978
  • Est. Priority Date: 02/04/1976
  • Status: Expired due to Term
First Claim
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1. In a vehicle having at least first and second axle trucks, each truck having at least two axles thereon, a slip/slide detection system comprising:

  • first sensor means connected to a first axle on the first truck for generating digital signals indicative of the angular velocity of this axle;

    second sensor means connected to a second axle on the first truck for generating digital signals indicative of the angular velocity of this axle;

    third sensor means connected to a third axle on the second truck for generating digital signals indicative of the angular velocity of this axle;

    fourth sensor means connected to a fourth axle on the second truck for generating digital signals indicative of the angular velocity of this axle;

    first detecting means having its inputs connected to the outputs of the first sensor means and the fourth sensor means for detecting a preselected velocity difference between the first and fourth axles;

    second detecting means having its inputs connected to the outputs of the second sensor means and the third sensor means for detecting a predetermined velocity difference between the second and third axles;

    third detecting means having its inputs connected to the outputs of the third and first sensor means for detecting a preselected velocity difference between the third and first axles;

    fourth detecting means having its inputs connected to the outputs of the fourth and second sensor means for detecting a preselected velocity difference between the fourth and second axles;

    first gating means having inputs thereof connected to the outputs of the first and second detecting means for signifying a slip condition of the second truck or slide condition of the first truck;

    second gating means having inputs thereof connected to the outputs of the third and fourth detecting means for signifying a slip condition of the first truck or slide condition of the second truck.

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