Patent EA-002539-B1 (EA)
Title: Sinking machine with vertical swing rollers
Inventor: KROENER-NAUMANN ROLF
IPC: E21C27/24
Filed: 1999-01-19
Abstract: 1. Sinking machine especially for the use on the sections (2) of underground coal mining where the sole (3) of the section needs to be lowered again to a standard level after elevations (7) due to convergence, with a machine frame (10), a drive (11) and a cutting device (17) to be inserted in the sole (3) of the section which features two rollers that are vertically set and horizontally moveable, held by a supporting arm (21), and which is related to a conveyor (18) via which the discharge material is transported behind the machine frame (10). characterized in that the rollers of the cutting device (17) are vertically and pivotally arranged and where the height of the swing rollers (19, 20) can be adjusted. The swing rollers are held (individually) via support arms (21), connected with the machine frame (10) which is used as a stabilizer and connector unit, and are pivotal on the side parts (29, 30) of the machine frame (10) and are anchored in a compact support arm bearing (22) which relates to the floor plate unit (15) of the machine frame (10). 2. Sinking machine according to claim 1, characterized in that the support arms (22) are related to the machine frame and can be adjusted in their height via hydraulic control cylinders (23). 3. Sinking machine according to one of the previous claims, characterized in that the support arms (21) feature integrated swing cylinders. 4. Sinking machine according to one of the previous claims, characterized in that the swing rollers (19, 20) are equipped with powering drive in the hollow shaft of the body (24) of the roller. 5. Sinking machine according to one of the previous claims, characterized in that the swing rollers (19, 20) are set to work counteractively towards the middle. 6. Sinking machine according to one of the previous claims, characterized in that the machine frame (10) is designed as a front floor plate unit (15) which supports the boom arm bearing (22) as well as a rear stabilizer and connector unit (16) which both can be braced against the section limits (6) and which can be moved towards each other via hydraulic cylinders (12) and skids (13, 14) which serve as an undercarriage (11). 7. Sinking machine according to one of the previous claims, characterized in that the hydraulic cylinder (12) can be spherically moved and that it is designed to allow an angle between the floor plate unit (15) and the stabilizer and connector unit (16). 8. Sinking machine according to one of the previous claims, characterized in that the floor plate unit (15) and the stabilizer and connector unit (16) can be braced independently from each other against the restoring forces from the section through special mining braces (25) and support cylinders (26). 9. Sinking machine according to one of the previous claims, characterized in that the floor plate unit (15) is equipped with a level control (33) which rests on the stabilizer and connector unit (16). 10. Sinking machine according to one of the previous claims, characterized in that the floor plate unit (15) consists of a middle part (28) which encompasses the conveyor (18), two side parts (29, 30) which encompass the special mining braces (25) and intermediary adapter rails (31, 32). 11. Sinking machine according to one of the previous claims, characterized in that the floor plate unit (15) is equipped with a shovel-shaped loading ramp (40) with loading aprons and a loading strip (41) on its front edge. 12. Sinking machine according to claim 11, characterized in that the loading strip (41) features a pointed bearing. 13. Sinking machine according to one of the previous claims, characterized by the fact that the rear lower edge (42) of the floor plate unit (15) is phased. 14. Sinking machine according to claim 6, characterized in that the stabilizer and connector unit (16) is divided into middle part (28'), side parts (29', 30') and adapter rails (31', 32') and that it is equipped with a positioning piece (44) for the conveyor (18) in the middle section which absorbs the relative motion between the conveyor (18) and the stabilizer and connector unit (16). 15. Sinking machine according to one of the previous claims, characterized in that the conveyor (18) consists of an inflexible frame (45) which can be laid on the positioning piece (44) of the stabilizer and connector unit (16) and which is joint to the front end (46) of the floor plate (15) unit so that it can pivot horizontally. 16. Sinking machine according to one of the previous claims, characterized in that the level control (33) consists of level control cylinders (34) which are fixated on oscillators (25) and like them are pivotally attached to the floor plate unit (15) and via a cardan joint (36) are connected with thruster poles (37) which can be moved within the stabilizer and connector unit (16) in parallel direction to the section.