| 摘要 |
PURPOSE: A device for dismantling pipes for greenhouse capable of pulling out pipes driven in soil at a depth of about 30cm under the earth's surface is provided which makes it possible to remove and dismantle a large amount of steel pipes with low force. CONSTITUTION: A first rack gear(65), second rack gear(66), first pinion gear(50) and second pinion gear(53) are moved upwardly and downwardly, and a pipe is clamped by a lock arm(75) and cam lock(32). When load is applied to a pedal(35), the first rack gear goes to a lower part and the second rack gear goes up to an upper respectively while clamping a pipe to pull out the pipe from the ground. And then the lock arm and the pedal are returned to an initial structural state by the restoring force of a tensile spring A(70) and a tensile spring B(73) fixed to the inside of a body frame(88) of the device when load on the pedal is removed after pulling the pipe. |
