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Telescopic sleeve
A telescopic sleeve comprises four sleeve arc-shaped plates, supporting connecting rods, a cylindrical thread connecting rod, U-type connecting plates and round connecting plates. The supporting connecting rods comprise four upper supporting rods and four lower supporting rods, wherein the upper supporting rods and the four lower supporting rods are arranged symmetrically. The sleeve arc-shaped plates comprise the inner sleeve arc-shaped plates and the outer sleeve arc-shaped plates, wherein the inner sleeve arc-shaped plates and the outer sleeve arc-shaped plates are overlapped to form a complete round closed sleeve. The concave bottom faces of the U-type connecting plates are fixedly installed on the inner walls of the sleeve arc-shaped plates through screws. Each sleeve arc-shaped plate is movably connected with one upper supporting rod and one lower supporting rod through the corresponding U-type connecting plate at the same time. The cylindrical thread connecting rod sequentially penetrates through screw holes in the upper round connecting plate and the lower round connecting plate. In a using state, through rotating the cylindrical thread connecting rod in forward and backward directions, the included angle alpha between the upper supporting rods and the lower supporting rods is changed, so that the diameter D of the telescopic sleeve formed by the four sleeve arc-shaped plates is changed. The telescopic sleeve is simple in structure, convenient to construct and capable of being used repeatedly.
Telescopic sleeve
A telescopic sleeve comprises four sleeve arc-shaped plates, supporting connecting rods, a cylindrical thread connecting rod, U-type connecting plates and round connecting plates. The supporting connecting rods comprise four upper supporting rods and four lower supporting rods, wherein the upper supporting rods and the four lower supporting rods are arranged symmetrically. The sleeve arc-shaped plates comprise the inner sleeve arc-shaped plates and the outer sleeve arc-shaped plates, wherein the inner sleeve arc-shaped plates and the outer sleeve arc-shaped plates are overlapped to form a complete round closed sleeve. The concave bottom faces of the U-type connecting plates are fixedly installed on the inner walls of the sleeve arc-shaped plates through screws. Each sleeve arc-shaped plate is movably connected with one upper supporting rod and one lower supporting rod through the corresponding U-type connecting plate at the same time. The cylindrical thread connecting rod sequentially penetrates through screw holes in the upper round connecting plate and the lower round connecting plate. In a using state, through rotating the cylindrical thread connecting rod in forward and backward directions, the included angle alpha between the upper supporting rods and the lower supporting rods is changed, so that the diameter D of the telescopic sleeve formed by the four sleeve arc-shaped plates is changed. The telescopic sleeve is simple in structure, convenient to construct and capable of being used repeatedly.
Telescopic sleeve
LIANG WEI (author) / TAN YANGRONG (author) / HUANG CHENGYONG (author) / MA CHAO (author) / MO YUYE (author)
2015-11-04
Patent
Electronic Resource
English
IPC:
E04G
SCAFFOLDING
,
Baugerüste
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