The invention relates to a shoe gap
regulator for a railway vehicle. The shoe gap
regulator comprises a box, a wedge-shaped block, a cross shaft, a regulating sleeve, a screw, a limiting sleeve and limiting plugs, wherein the regulating sleeve and the limiting sleeve are provided with first inserting grooves and second inserting grooves respectively in the axial direction, the limiting plugs are correspondingly inserted into the first inserting grooves and the second inserting grooves, and the contacting surface of the limiting sleeve is matched with the contacting surface a first nut in a gear meshed mode to form a first tooth-shaped
clutch mechanism. When a first reset compression spring is compressed, the first nut and the limiting sleeve are separated. The contacting surface of the rear end of a second nut is matched with the contacting surface a
brake supporting block in a gear meshed mode to form a second tooth-shaped
clutch mechanism, the
brake supporting block is fixed inside the regulating sleeve, and when a second reset compression spring is compressed, the second nut and the
brake supporting block are separated. According to the shoe gap
regulator, a traditional gap regulating mechanism is changed, various functions of the shoe gap regulator are achieved through the simple and reliable mechanisms, and reliability is high.