SU68566A1 - Machine for cutting hollow cylinders directly from arrays - Google Patents

Description

Machines for cutting hollow cylinders directly from rock massifs are known, made in the form of a trolley carrying a combined tool, including a hollow mill and a drill for cutting cylinders located along its axis. Behind the drill in such machines are installed horizontal saws to separate the cylinders from the array and vertical saws to cut the cylinder pillars.

The machine proposed according to the invention has the distinctive feature that the cutter of the combined tool is provided on the outer surface with alternating rows of strips and discontinuous slots, located along a helical line. This is done to remove drill dust when the mill is cutting out cylinders from rock mass, for example, talco-magnesite stone.

FIG. 1 shows schematically the proposed machine in a side view; FIG. 2 is a front view, in FIG. 3 is a top view, in FIG. 4 - kinematic scheme of motion transmission

the cutting tool on (Fig. 5 - the cutter at the side view and in Fig. b - a longitudinal section of the cutter.

All the parts and mechanisms of the machine are mounted on a frame 7 supported on two pairs of wheels 2. In front of the machine there is a transfer mechanism for working and idling, designed to move the machine through the slaughter. This mechanism consists of a worm gear reducer 3. connected by an elastic coupling 4 with a motor 5 of the closed type. The latter drives the worm gear shaft 6, on which sliding cam cylindrical gears 7 and 8 are mounted, which engage with gears 9 and 70 fixed to the axis of the wheelset of the bogie. On the shaft 6 between the cam gears, it is mounted on the key of the two-way cam clutch 77, moved by the lever 72. When the clutch clutch 77 and the gear 8 are coupled, the machine has a working stroke and at the coupling clutch with the gear 7 - idling.

In the middle part of the cart is located585

wives in pairs in separate suportah 13 four working spindles 14 drilling mechanism. The spindles are rotated from the motors 16, connected by flexible sleeves 17 to the transmission shafts 18, at the ends of which vertical bevel gears 19 are mounted, which engage with horizontal bevel gears 20. The latter sit at the ends of the vertical shafts 21 with cylindrical gears 22 coupled through spurious gears 23 with gears 24 mounted on spindles 14.

The spindles are lowered onto the bottom-hole by hand using the handwheel 25 connected by two pairs of bevel gears 26 and 27 to the shaft 2S, on which the cylindrical gears 29 attached to the slats 30 are attached. The slats are attached to each other through the shaft 28 by an elastic clutch 37 and moving along guide rails / 5. The array spindles are raised using counterweights 32, connected to the shaft 28 via fixed rollers 33, 34 and 35 with cables.

At the lower ends of the spindles J4 there is a drilling tool, the mills 36 of which are provided on the outer surface with alternating rows of strips 37 and discontinuous slots 3S along a helical line. Thanks to such a device, drilling dust will be removed when cutting cylinders from rock massifs.

At the end of the cart is a saw unit consisting of horizontal saws 39 and vertical

saws 40. The saws are driven from motor 47 through elastic sleeve 42.

Before starting work in the face stack mobile Well- the way the entire length of the slap. Then the machine is installed on the rails and under its own power serves it to the bottom. In the mine, the machine stops and starts the motor of the spindles for drilling. When the spindles sink to the desired depth, they are lifted out of the array, the working stroke of the machine is turned on, and horizontal and vertical saws are activated. In this case, the machine moves forward, undercutting the cut cylinders and trimming cylinder cylinder pillars. When this operation is completed, the saw drive mechanism is turned off and the process of cutting the hollow cylinders is repeated.

Subject invention

A machine for cutting hollow cylinders directly from rock masses, consisting of a trolley carrying a combined tool in the form of a hollow cutter and a drill bit located along its axis for cutting cylinders and horizontal saws mounted behind it to separate cylinders from the massif and vertical. saws for cutting cylinder pillars, characterized in that in order to remove drilling dust when cutting cylinders from rock massifs, for example, talc-magnesite stone, the milling tool 36 of the combined tool is provided on the outer surface with alternating rows of strips 37 and intermittent slots 38.

FIG. one

sixteen

FIG. 3

FIG. four

FIG. 6