| 摘要 |
The present invention refers to a cart-probe designed to introduce devices into pipes in order to perform coatings or inspecting the inner condition thereof. Said apparatus has the advantage of housing a probe or device in the central portion thereof, which is fixed at the front and rear portions of the cart-probe by means of three pressing screws located at 120° from each other. The invention also has a device for adapting the same to different inner diameters of tubes, which rotates a central nut for moving three arms arranged at 120° one from each other, the arms having at the end portion thereof three pairs of wheels located at the periphery of the cart-probe. Depending on the motion of the nut the arms with the wheels are separated from or brought into contact with the central portion of the device, thus facilitating the introduction of said cart-probe into tubes having a higher or lower diameter.
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