FIELD: mining.
SUBSTANCE: hydraulic jack incorporates a hydraulic cylinder and a piston with a stock of bilateral operating. The piston stock of the hydraulic cylinder presents an integral unit with an inlet slider moving progressively and functioning as a threaded shaft, which interacts with a nut furnished with two additional threads. One of the nut threads is jointed to the fixed threaded section, while the other one to the threaded section of an outlet slider, which directly influences roof of a drift.
EFFECT: higher pressure exerted on roofing at the same pressure of power fluid.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| 0 |
|
SU115841A1 | |
| POWERED SUPPORT SECTION | 2010 |
|
RU2439329C1 |
| HYDRAULIC JACK WITH SCREW SUPPORT FUNCTION | 2014 |
|
RU2562677C1 |
| DEVICE FOR MOVING MAIN BEAM OF POWERED SUPPORT | 0 |
|
SU1024594A1 |
| POWERED SUPPORT SECTION | 2005 |
|
RU2303699C1 |
| COMBINED-EXCAVATION POWERED STOPING SET | 0 |
|
SU798315A1 |
| HYDRAULIC JACK FOR TRAVEL OF POWERED SUPPORT UNIT | 2008 |
|
RU2392439C1 |
| POWERED SUPPORT SECTION | 0 |
|
SU1040173A1 |
| POWERED ROOF SUPPORT SECTION | 0 |
|
SU1643733A1 |
| DELIVERING PLOW UNIT, ASSEMBLY OF DELIVERING PLOW UNIT, GUIDES MOVING MECHANISM, UNIT SUPPORT, HYDRAULIC CONTROL SYSTEM, DEVICE FOR CATCHING-UP OF FACE ROOF, SUPPORTING BASE OF CIRCULAR PLOW | 2000 |
|
RU2182668C2 |
