US 12,359,513 B2
Hydraulic collapsible rotary stand for wireline coring underground drill rig
Ruifeng Bai, Chifeng (CN)
Assigned to CHIFENG HAO FENG DRILLING CO., LTD., Chifeng (CN)
Filed by CHIFENG HAO FENG DRILLING CO., LTD., Chifeng (CN)
Filed on Dec. 28, 2023, as Appl. No. 18/398,301.
Claims priority of application No. 202311334150.1 (CN), filed on Oct. 13, 2023.
Prior Publication US 2025/0122765 A1, Apr. 17, 2025
Int. Cl. E21B 15/04 (2006.01)
CPC E21B 15/045 (2013.01) 20 Claims
OG exemplary drawing
 
1. A hydraulic collapsible rotary stand for a wireline coring underground drill rig, comprising two main hydraulic supporting posts, at least one hydraulic post erection cylinder, a collapsible stand base, a horizontal rotating base, and a rotary lifting cylinder, wherein
the horizontal rotating base is located under the collapsible stand base; the rotary lifting cylinder is located at a center of the horizontal rotating base; a cylinder body of the rotary lifting cylinder is fixedly connected to the collapsible stand base; the rotary lifting cylinder drives the collapsible stand base to move up or down; and the collapsible stand base is configured to rotate around the center of the horizontal rotating base;
two post mounting rods are hinged at a front side of the collapsible stand base; each of the two post mounting rods is connected to one of the two main hydraulic supporting posts; a main post supporting cross-bar is provided between lower portions of the two main hydraulic supporting posts; two ends of the main post supporting cross-bar are respectively fixedly connected to the corresponding main hydraulic supporting posts; a first end of the hydraulic post erection cylinder is connected to the main post supporting cross-bar, and a second end of the hydraulic post erection cylinder is connected to a rear side of the collapsible stand base; and through the hydraulic post erection cylinder, the main hydraulic supporting posts are pushed to be erected or collapsed; and
a hydraulic gyration supporting beam is provided between the two main hydraulic supporting posts; the hydraulic gyration supporting beam is connected to a lower sliding plate; and the lower sliding plate is provided with a drill rig.