SU454330A2 - Drilling rig mast - Google Patents

Description

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The invention relates to the drilling of wells and is intended for use in drilling machines with hydraulic rotation and feed.

According to the main author. St. No. 314855 is known for the guide mast of a drilling machine, where one of the guides of the movable rotator is made in the form of a hollow double-sided rod with a pistol mounted in a cylinder that acts as a slider and is connected to a rotator.

However, the known device does not allow the use of hard oil lines to supply oil to the hydraulic motor of the machine's rotator.

The aim of the invention is to increase the reliability of the hydraulic system of the drilling machine.

This is achieved by the fact that the second guide mast is made similarly to the first one, and the upper and lower parts of the hydraulic cylinder are connected by rigid oil lines to the hydraulic motor for entering the hydraulic motor of the rotator and its drain.

To eliminate the movement of oil when the oil is fed into the upper or lower part of the hydraulic cylinder, the working area of the piston is approximately three to four times smaller than the area of the piston on the other guide, where the piston with the hydraulic cylinder is designed to move the rotator.

FIG. 1 and 2 shows the proposed mast.

The mast has two guides, made in the form of hollow double-sided rods 1 and 2 with pistons 3 and 4 installed in hydraulic cylinders 5 and 6, playing the role of sliders and connected to rotator 7. Piston 4 installed in hydraulic cylinder 6 on rod 2, has a smaller working area. The lower and upper cavities of the hydraulic cylinder 6 are connected by rigid oil lines 8 and 9 to the hydraulic motor of the rotator 10. Oil lines 11 and 12 are inside the rods, holes 13 and 14 are made in the walls of the stem 1, and holes 15 and 16 are in the walls of the stem 2 pipelines of oil 17 and 18 through swivel joints 19 and 20. The swivel joint (see Fig. 2) consists of a sleeve 21, into which a finger 22 is inserted with channels 23 and 24 insulated from each other, and a cover 25. The sleeve has holes 26, connected to channels 23 and 24.

The guide mast works as follows.

To move the rotator down, the oil is supplied to the oil pipe 11 by the hydraulic pump through the pipe 17 through the rotary connection 19 and its channel 24, then through the hole 14 it enters the lower part of the cylinder, lowering it to its lowest position. Wherein

The mass from the top of the cylinder through the hole 13 of the hollow guide and through the channel 23 enters the drain. To lift the cylinder, oil is fed through the channel 23, the bore holes 26 into the hollow guide, from where it enters the upper part of the cylinder through the hole 13 and moves it to its highest position. After that, the oil from part of the cylinder through the hole 14, the oil line 11 and the channel 24 goes to drain.

To rotate the hydraulic motor, oil is supplied to the oil pipe 12 by another hydraulic pump through pipeline 18 through a rotary connection 20. Through the opening 15 it enters the lower part of the hydraulic cylinder 6 through a rigid oil pipeline 8 - into the hydraulic motor 10 and from it through the oil pipeline 9, the upper part of the hydraulic cylinder 6, opening 16 , the rod 2 and the oil line 18 goes to drain.

If it is necessary to reverse the movement of the hydraulic motor, the oil follows the same path in the opposite direction. The transit passage of oil through the hydraulic cylinder 6 does not disturb the normal operation of the hydraulic cylinder 5, since the working area of piston 4 is about three to four times smaller than the working area of piston 3.

Subject invention

Drilling machine mast on auth. St. N ° 314855, characterized in that, in order to increase reliability, the second guide mast is made similarly to the first, with the lower and upper cavities of the hydraulic cylinder on the second guide being connected to the rotary motor by rigid oil lines.

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