초록 ▼

An apparatus for testing tread and disk brake actuator units for use in railway cars in an overhaul backshop environment is disclosed. The apparatus includes a test bench on which multiple test fixtures are mounted to simultaneously receive and test a like number of brake actuator units. Each test f

An apparatus for testing tread and disk brake actuator units for use in railway cars in an overhaul backshop environment is disclosed. The apparatus includes a test bench on which multiple test fixtures are mounted to simultaneously receive and test a like number of brake actuator units. Each test fixture is provided with differently sized sets of brackets to enable respective simultaneous mounting of different brake actuator units made by a variety of manufacturers. The test bench includes a series of solenoids and directional valves operated by a programmable logic controller to supply low, high and maximum pressure air to the actuator units to perform pneumatic leakage, applied force, and slack adjuster travel tests. Pneumatic leakage detection is performed through an automatic test removing human subjectivity from the test process. A diagnostics panel provides functional information on the status of the equipment on the test bench. A control panel enables the test operator to select between automatic and manual modes of operation and to observe lights indicative of test type, cycle and pass versus failure mode following test completion.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus for testing brake actuator units for use in railway cars, comprising:a. a test stand;b. a plurality of differently sized sets of brackets to which a brake actuator unit is mounted to one of said sets;c. control means for applying pressurized air to the brake act

[ What is claimed is:] [1.] Apparatus for testing brake actuator units for use in railway cars, comprising:a. a test stand;b. a plurality of differently sized sets of brackets to which a brake actuator unit is mounted to one of said sets;c. control means for applying pressurized air to the brake actuator unit and monitoring for pressure drop indicative of air leakage within a cylinder of said actuator unit; andd. means, responsive to a signal from the control means, for identifying whether a predetermined amount of leakage is present.