Patent ID: 11919748
Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. The hoist for the transferred materials in the underground auxiliary transportation system according to claim 2, wherein the cross beam is a retractable structure, including:
one fixed cross beam unit and two movable cross beam units connected at both ends of the fixed cross beam unit, wherein the two movable cross beam units are respectively a first movable cross beam unit and a second movable cross beam unit, and the two movable cross beam units are slidable relative to the fixed cross beam unit,
the pushing rod includes a plurality of pushing rod units, each two adjacent pushing rod units are hinged with each other, wherein one of the pushing rod units is connected with a driving shaft of a hydraulic motor, and
a sliding track is arranged on a beam wall of each of the movable cross beam units, and the hydraulic motor is slidably connected with the sliding track.