Double-telescoping stand column of hydraulic support
A hydraulic support, double-telescopic technology, applied in pillars/supports, mining equipment, earthwork drilling and mining, etc., to achieve energy saving, energy saving and emission reduction economic benefits, and improve work efficiency
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[0010] The present invention will be further explained in conjunction with the drawings. The hydraulic support double telescopic column is composed of a primary telescopic column and a secondary telescopic column. The primary telescopic column includes a first cylinder block 1, a second cylinder block 2, built-in bottom valve 5, guide ring 3, fine seal 8, oil Port a9, oil port b10, the built-in bottom valve 5 is installed on one side of the inner wall of the bottom end of the first cylinder block 1 and the outer wall of the bottom end of the second cylinder block 2, the other side is equipped with a guide ring 3, the static seal 8 is installed in the first cylinder Between the inner wall of the front end of the body 1 and the outer wall of the front end of the second cylinder 2, an oil port a9 is provided in the middle of the outer wall of the first cylinder 1, and the oil port b10 is at the front end of the outer wall of the first cylinder; The telescopic column includes a sec...
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