| 摘要 |
PURPOSE:To reduce the size and the weight by arranging an air pressure generation means for geneating a specified positive air pressure as common energy source for a constant speed running device and an automatic lock device for automatically locking doors at a specified speed for an equipment having these devices. CONSTITUTION:An air pressure supply source 30 is equipped with an air tank 33 to which a positive air pressure through a connection tube P1 from a compressor 32 driven with a motor 31 and an air pressure within the tank 33 is introduced into an air pressure actuator 50 of an air pressure control circuit 40 and a constant speed running device through a connection tube P2. The air pressure control circuit 40 equipped with an electromagnetic direction control valve 42 controls the air pressure to be fed to air cylinders 43-46 for operating door locking mechanisms 20a-20d of doors through the valve 42. On the other hand, the air pressure actuator 50 is made up of a gas actuator 51 and an air pressure control mechanism 52 and an output rod is connected to an accelerator pedal 10. |
