Dust-proof device for hydraulic oil cylinder
The utility model discloses a dust-proof device for a hydraulic oil cylinder, and the hydraulic oil cylinder is used for a hydraulic system. The dust-proof device comprises an annular pipe which can be arranged outside the hydraulic oil cylinder and is close to a piston rod, an air electromagnetic v...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses a dust-proof device for a hydraulic oil cylinder, and the hydraulic oil cylinder is used for a hydraulic system. The dust-proof device comprises an annular pipe which can be arranged outside the hydraulic oil cylinder and is close to a piston rod, an air electromagnetic valve controlled by an electrical signal, a pneumatic triplet connected with the air electromagnetic valve through a metal hosepipe, and an air valve connected with the pneumatic triplet through the metal hosepipe, wherein the annular pipe is provided with a jet nozzle, the air electromagnetic valve is connected with the annular pipe through the metal hosepipe, and the electrical signal can supply power when the piston rod shrinks. The dust-proof device provided by the utility model can prevent dust and scrap iron from entering into the oil cylinder, so as to avoid damage due to friction generated on the piston rod, and the dust-proof device has the function of cooling the surface of the piston rod. |
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