| 摘要 |
The invention relates to mining industry and can be used for cutting masonry units, namely wall building blocks in open quarries.The inventive result is directed at simplifying design of low-bench rock-cutting machine, increasing its reliability and decreasing its dimensions.The low-bench rock-cutting machine comprises a chassis 1, with open rollers 2, a mechanism 3 for moving the chassis (fig. 2), vertical saws 4 with drives designed as a hingedly-mounted relative to the chassis 1 reduction gear 5 with a conic gearing 6 (fig. 3) the vertical saws are mounted on an output shaft of the reduction gear which is connected to a hydro cylinder 8, the other end of which is arranged on the chassis 1.The low-bench rock-cutting machine comprises horizontal saws 9 with a drive 10 and a means for horizontal and vertical displacement of the horizontal saws 9 made as a lever 11 and a screw pair (fig. 4). The lever 11 is mounted on the chassis 1 rotatably relative to a vertical axis 12 (fig.4) and is coupled with the hydro cylinder 13 for the horizontal displacement of the horizontal saws 9. A vertical bushing 14 is mounted on the lever end, a drive 10 for rotating the horizontal saws 9 and adapted to a vertical displacement is arranged in the bushing. A bracket 14 is mounted on the vertical bushing 14 with a threaded hole 16 made on the bracket end.The screw pair comprises a screw 17 mounted on the drive 1o for rotating the horizontal saws 9 and the bracket 15 with the threaded hole 16. During starting to avoid turning the drive 10 a stopper 18 is used mounted on the drive 10 and interacting with the hole 19 made in the bracket 15 of the vertical bushing 14.The low-bench rock-cutting machine comprises a control board 20 and a hydraulic station 21 mounted on the chassis 1 and connected to hydro cylinders 8 and 13. The vertical 4 and horizontal 9 saws are provided with a protective housing 22 and 23 correspondingly. Rails 24 and a gauge (not shown on the drawing) are used for cross-cutting by the low-bench rock-cutting machine. |
