EXCITATION EQUIPMENT OF PERIPHERAL JET AIR-CUSHION-TYPE
Document Type and Number:
Japanese Patent JP3297316
PROBLEM TO BE SOLVED: To prevent vibration environmental pollution from being generated in an excitation apparatus for a vibration table in an up-and-down-direction vibration testing machine or the like by a configuration wherein a vibration with a low-frequency and large amplitude can be generated by utilizing a cushion pressure as an excitation force and the vibration table is not connected directly to the ground.
SOLUTION: A vibration table 1 is installed inside a cushion chamber 8 at a pit 10, and a pressure air tank 2 is attached to the lower part of the vibration table 1. The high-pressure air is supplied to the pressure air tank 2 from a high-pressure-air producing apparatus 4, and the air is jetted into the cushion chamber 8 from air jet nozzles (air nozzles) 3 attached to the whole face on the outer circumference of the vibration table via opening and shutting valves 5. The air nozzles 3 can change their directions by operating motors 7 by a nozzle-direction change device 6. When angles of the jet nozzles (the air nozzles) 3 are changed, the vibration table 1 which is levitated in a space is moved up and down by a change in a jet force, and the vibration table is excited.
April 12, 2002
July 15, 1996
MITSUBISHI HEAVY IND LTD
G01M7/02; B06B1/18; F15D1/00; G01M7/00; B06B1/18; F15D1/00; (IPC1-7): G01M7/02; B06B1/18; F15D1/00