JPS5720503A - Air motor - Google Patents

Abstract

PURPOSE: To differentiate number of revolution of an air motor depending upon whether the running is forward or reverse, by providing throttle valves in exhaust passages for both forward and reverse running of the motor respectively and adjusting the flow rate of exhaust air.

CONSTITUTION: Rotor blades 17AW17E of which outer edges 17a project from concave 16 when the rotor 13 rotates and slide on the inner circumferential surface of the cylinder 2, are slipped in the concave slots 16 made in a rotor 13 set eccentrically to the center of a cylinder 2. Furthermore, air supply passages 31, 32 for forward running and reverse running communicating with the cylinder 2 and a selector valve 33 are arranged, and throttle valves 41, 42 controlling the flow rate of exhaust air are arranged in the exhaust passages 39, 40 for forward and reverse running respectively. When operating air is supplied to the cylinder 2 through air supply passage 31, the rotor 13 rotates, the outer edges 17a of the rotor blades 17AW17E slide, exhaust air flows into the exhaust passage 39, and it is exhausted, while its flow rate being reduced with the throttle valve 41. Accordingly, number of revolution of the rotor 13 can be differentiated by adjusting the throttle valve 41, 42 depending upon whether the running is forward or reverse.

COPYRIGHT: (C)1982,JPO&Japio