SU387114A1 - DEVICE FOR DRILLING WELLS IN LOW-POWER COAL STRAYS - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to the mining industry, in particular to devices for drilling wells.

A device for drilling wells in thin coal seams is known, consisting of a planetary gearbox, a drill rod, a crown and guide lights.

The proposed device is characterized in that it is provided with two conical drums mounted at an angle to the axis of the drill rod, the conical drums reinforced with teeth and mounted rotatably on opposite sides around the crown drive shaft.

Such an embodiment of the device makes it possible to give the well an elliptical shape and to improve the yield of the destroyed coal.

The drawing shows the proposed device.

The device consists of a drill bit / connected by a shaft 1, a pair of bevel gears 5 and 4 and a shaft 5 with a driving drill rod 6 and two tapered drums 7, reinforced with teeth 8, connected by gear teeth with wheels 9, 10 and L with shaft 2, and also drove 2, a pair of copy gears 13 and 14, drove 15, planetary gears 16, a gear wheel with internal teeth 17, a gear wheel 18 and a shaft 5 s

drive drill rod 6. Cone drums 7 are installed on the same geometrical axis and symmetrically with respect to shaft 2. In addition, tapered drums 7 and crown 1 with the power of carrier 12 and shaft 2 are set to a node with angle a with respect to the drill rod 6.

The planetary-bevel gearbox is assembled in the housing 19, on which the spacer lights 20 and 21 are rigidly fixed. The lights 22 are mounted at a certain distance from each other on the drill rig.

The device works as follows.

From the drilling rig 6 through shafts 2 and 5 and a pair of bevel gears 3 and 4, the torque is transmitted to the crown 1 and, in addition, through the gears 9, 10 and 11 to the drums 7. The drums 7 rotate around common geometric smallpox and in different directions. Using a carrier 12, a pair of bevel gears 13 and 14, a carrier 15, a planetary gear consisting of gear wheels 16, 17 and 18 and a shaft 5, drums 7 driven from a drill rod 6 are driven around the face, rotating around shaft 2 Since the drums 7 and the crown / are set at an angle a to the bottom, then, rotating, they give an ellipse configuration to the well, with the small half-axis of the borehole located in power, and larger - along the direction of the formation. The larger the angle a, the more stretched the Hellenic in the region,

Subject invention

1. A device for drilling boreholes in thin coal seams, consisting of a planetary gearbox, a drill rod, a crown and guide lights, characterized in that the entire borehole gives an elliptical shape and improves output

destroyed coal, it is equipped with two conical drums set at an angle to the axis of the drill rod.

2. The device but p. 1, characterized by

that cone drums are reinforced by teeth

and rotate-mounted

opposite sides around the drive

shaft crowns.

20 W 171513 1U78 / 7 /

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