FIELD: mining.
SUBSTANCE: powered support section comprises a fixed support, a spacer hydraulic jack hingedly connected to the support, a stem of the spacer hydraulic jack piston, hingedly connected to a supporting link, a connecting rod of a supporting link, a barrier link, a double-hinged and a triple-hinged links. The barrier link is made in the form of a barrier yoke, which with one of its hinged joints is inserted into a kinematic pair with a fixed support. The triple-hinged link is a triple-hinged connecting rod, the double-hinged link is a yoke of a triple-hinged connecting rod. The triple-hinged connecting rod is connected to a fixed support via a yoke of a triple-hinged connecting rod. The spacer hydraulic jack, the piston stem, the supporting link, the supporting link connecting rod, the triple-hinged connecting rod, the yoke of the triple-hinged connecting rod are connected into a five-link chain.
EFFECT: increased volume of working space.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2303699C1 |
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