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1979年，我队自行研制了79—185型双管单动采心器。几年来，推广实用效果较好。现将其结构、性能特点及操作规范介绍如下：一、结构及其各部件的作用采心器的结构如图所示，主要由联动部分、内外管和钻头部分所组成。联动部分的上半部是滑动机构，中间是进水接头与分动器，下半部是内管回水装置。滑动机构上下滑动距离为70毫米，其作用是借助滑动拉杆（2）的上移，带动内管，使底部钻头处的弹簧爪（19）发生作用，卡紧和兜住煤岩心；滑动拉杆同进水接头（6）的连接用顶丝（7）固定，以防滑扣；分动器是封闭部件，其作用是借助滚球轴承，使内管静止外管旋转，以适应煤层钻进的需要；分动
In 1979, our team developed its own 79-185 dual-pipe single-action picker. In recent years, the promotion of practical results is better. Now the structure, performance characteristics and operating practices are described below: First, the structure and the role of each component The structure of the core device is shown in the figure, mainly by the linkage part, the inner and outer tube and the drill part. The upper part of the linkage part is a sliding mechanism, the middle is the water inlet joint and the transfer case, and the lower part is the inner pipe backwater device. Sliding mechanism up and down the sliding distance of 70 mm, its role is through the sliding rod (2) on the move, driven by the inner tube, so that the bottom of the bit at the bottom of the spring claw (19), clamping and briquetting coal core; The water inlet connector (6) is connected with the top wire (7) to prevent the slider from sliding. The transfer case is a closed part. Its function is to rotate the inner tube stationary outer tube by the ball bearing so as to adapt to the requirement of coal seam drilling ; Move