SU1416653A1 - Borehole expander - Google Patents

Abstract

The invention relates to the mining industry. Purpose - improving the reliability of the expander. The input shaft 5 of the transfer gearbox 1 is connected to the drill rod 6. On the output shafts 10 of the gearbox 1 fixed brackets 11 and 12 of different lengths at equal angles. On shaft 19 by means of brackets 11 and T2 sec. the possibility of rotation around their axis is installed rock-destroying tools (DRE). The lower lamp 70 is placed on the gearbox housing 1. The upper ends of the shafts 10 are placed in the upper support lamp. Shaft 5 and shafts tO receive from the driving rod 6, and when 13 and 14 are rolled around the face, cut off the shavings and form a multi-layered oval-shaped shaft If When 13 and 14 intersect the longitudinal axis of the expander during rotation, they do not collide and do not jam due to their rotation, g. AT 13 and 14 of one shaft 10 i placed between when 13 and 14 of another shaft 10 3 Il.

Description

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with

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The invention relates to the mining industry and can be used to expand wells.

The purpose of the invention is to increase the reliability of the expander

Fig about t shows the extender wells, a general view ;; Fig 2 - placement rock cutting tools tvv, view in plan; Fig, 3 - section aa in Fig, 1 o

The well expander includes a distributing gearbox 1 with a central gear 2 and a gear wheel with wheels 3 and -4 o Gear 2 is located on the input shaft 5 connected to a drilling drive rod. 6о On the gearbox housing p, a gear wheel (the bottom light gears 3 and 4 are installed - on shafts 8 and 9, ksch ory are connected to output shafts K) “On the output shafts 10 of HoBJiei .bi mouth by means of brackets 11 and 12 rotating rock-breaking tools on bearings (not shown) J. J. strapramer disc cones 13 and 14 o Brackets 11 and 12 are located at the same angle o t to the axis of the shafts 10, but the length of the bracket 11 is longer than the length of the bracket 12, the axes of the brackets 11 and 12 of the same shaft are in the same plane. The cutters 13 and 14 of one shaft 10 are turned relative to the similar cutters of another shaft, Toe. for example, a roller cutter 14

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five

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for the spacers of the spacer sleeves 21 and the brackets 22 additional milling cutters 23 which increase the diameter of the broadening.

The reamer works in the following way.

The torque from the drilling machine (not shown) is transmitted to the drive rod 6 through the drill rig. Shaft 5 with gear 2 receives rotation from rod 6, and gears 3 and 4, output shafts 10 and brackets 11 attached to them from, 12 and 22 At the same time, the conic cutters 13, 14 and 23 run around the face, each along its own path, cutting the crescent-shaped chips and forming a multi-oval oval-shaped barrel. If the rollers intersect the longitudinal axis of the expander during rotation, they do not collide and do not jam due to their reversal,

Formula gain.

The expander of wells, which includes a dispensing gearbox, the input shaft of which is connected to the drill rod, and the output shafts - with rock-breaking tools, the upper and lower support lights, which are different in order to increase the reliability of the expander, brackets of different lengths, fixed on the output shafts under

of the left shaft 10 is placed between the roller cone of equal angles, and the rock

Kami 13 and 14 of the right shaft 10 (), The upper ends 15 of the output shafts 10 are connected by means of bearing hubs 16 to the upper support lamp, consisting of 1M of studs 17, supporting 40 of ring 18 and connecting rod 19 connecting both STU11ITS 16. Screws 20 fix the upper ends 15 of the output shafts 10 against axial displacement. On the output shafts 10 can be installed through 45

the tools are mounted on the brackets rotatably around the axis of the bracket, wherein the brackets are fixed on the output shafts with the possibility of placing rock tools of one output shaft between rock tools of the other output shaft and the upper ends of the output shafts. us in the top support lamp

the tools are mounted on the brackets rotatably around the axis of the bracket, with the brackets fixed on the output shafts with the possibility of placing rock tools of one output shaft between rock tools of the other output shaft, and the upper ends of the output shafts are placed in the upper support lamp

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Claims (1)

Claim A well extender, including a distributing gearbox, the input shaft of which is connected to the drill rod, and the output shafts are connected with rock cutting tools, the upper and lower support lights, distinguishing with the fact that, in order to increase the reliability of the expander, it is equipped with brackets of different lengths mounted on the output shafts at equal angles, and rock cutting tools are mounted on the brackets to rotate around the axis of the bracket, while the brackets are mounted on the output shafts with the possibility of placing orazrushayuschih tools of the output shaft between the rock cutting tool of another output shaft, and the upper ends of the output shafts are located in the top, supporting the lantern "