SU729345A1 - Drilling arm - Google Patents

Description

(54) DRILLING ARROW

one

The invention relates to the mining industry, in particular to drilling arrows.

The well-known drill arrow, having a handle pivotally connected to a guide and a support, a cylinder of rotation of the handle and a pilot cylinder, the piston and rod cavities of which are connected respectively to the piston and rod cavities of the cylinder of rotation of the directions; the pilot cylinder is located coaxially with the cylinder of arm rotation, the piston of which is connected to the rod of the pilot cylinder 1.

The disadvantage of this drilling boom is that the limited rotation of the feeder by the cylinder of the turn mechanism does not allow it to be used for drilling holes in the roof under the sucker rod, and it does not compensate for the departure of the feeder from the bottom when turning the handle.

The closest to the invention according to the technical essence and the achieved result is a boom with a hinged handle with a guide and a support with pushing and lifting hydraulic cylinders, a guide turning mechanism, a pilot cylinder with a hollow stem and

a distributor with a housing and a slide valve for expanding the hydraulic cylinder 2.

The presence of a control cylinder and its brackets in it increases the dimensions of the support. The use of a cylinder as a guide turning mechanism does not ensure that the guide turns for drilling with the same drill rod of holes for sucker rod braking and bottom hole drilling, and parallel arrangement of holes is not provided.

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The purpose of the invention is to expand the scope of application of the drill boom by ensuring the drilling of parallel boreholes and boreholes for a sucker rod.

Claims (1)

For this, the boom is equipped with a matching mechanism, which is made of a hydraulic motor 15 and connected through gears of screws, a nut of one of which is installed in the hollow part of the pilot-cylinder double-sided shaft, and the nut of the other is rigidly connected to the sliding cylinder and the shaft. a volumetric hydraulic motor, which is included the R line, between the above-mentioned spool and the cavity of the expanding cylinder, while the steering mechanism is made of a rail with equal cylinder volumes that are hydraulically connected to the cavities of the pilot cylinder. The drawing shows the borax arrow with. principle hydraulic circuit, cut. Burov boom has a hydraulic cylinder expanding 1 telescopic handle 2, pivotally connected to guide 3 and rotating support 4, with pivotally fixed rotation hydraulic cylinder 5 and pilot cylinder 6 forming the hydraulic parallelogram of rotation guide mechanism 3, so that the volume cavities rack-jacking mechanism of rotation 7 is equal to the volume of the cavities formed by a double-sided rod 8 of the pilot cylinder 6, with one end of the double-sided shaft 8 connected to the hydraulic cylinder shaft 5, another fixed nut 9, cooperating with the screw 10, the incoming into the cavity 8. The screw rod 10 through a pair of gears 11 kinematically coupled with the screw 12, the nut 13 constituting matching element. The nut 13 is connected to a spring-loaded bristle 15 located in the housing 14, and through the rod and the coupling 16 to the shaft of a volumetric hydraulic motor 17 connected in series with the magnitral of the expanding cylinder 1 cavity. with manual control valves 18, 19, and 20 connected to line 21. Spring-loaded spool 15, matching element and displacement hydraulic motor 17 are mounted in the housing of the turn hydraulic cylinder 5. Burov boom works as follows. When transferring the drilling boom to the next valve by the distributor 18, oil is supplied to the left cavity of the turning cylinder 5, the drilling arrow turns up, the pilot-cylinder piston 6, moving to the right, directs the oil from the right cylinder cylinder 6 to the right cavity of the cylinder of the swiveling jack mechanism 7 by turning the guide 3 clockwise and keeping parallel with the original position. At the same time, the left part of the stem 8 with the nut 9 fixed on it also moves to the right, sliding along the screw in the hollow part of the rod 8 to the screw 10, and turning it. This rotation is transmitted through a pair of gears AND to the screw 12, which together with the nut 13 forms the matching element, and since the nut 13 is braked by the volume hydraulic motor 17, the rotational movement of the screw 12 is converted into the translational movement to the right of the nut 13, with which the spring-loaded valve moves 15, from 1 to the oil in the right cavity, hydrocyl nidra once moving 1, moving the movable part of the hand 2 together with the rack and jack mechanism 7 and naprzol yushi 3 p-pzvo, compensating for the departure of the arrows; . The oil passing through the magnetic shaft causes the rotation of the volumetric hydraulic motor 17, the shaft of which rotates the nut 13 through the coupling 16 and rotates the screw 13 in the direction of rotation of the screw 13. After the boom (handle) 2 is lifted, the oil enters the hydraulic cylinder 1, and, consequently, the handle expands 2 and the rotation of the volumetric hydraulic motor 17 will occur until the departure of the boom (arm) 2 from the bottom is commenced. This will happen at the moment when the number of revolutions of viit 12 will be equal to the number of revolutions of the nut 13, and the nut 13 together with the spool 15 will return to their original position, blocking the access of oil to the right cavity of cylinder 1. Lowering the boom (arm) 2 occurs in the opposite direction dke. Drill drilling is carried out as follows. The distributor 20 supplies the oil to the left cavity of the cylinder of the rack-jack mechanism 7, turning the guide 3 to a vertical position, then drilling the vertical pinch. Since the pilot cylinder 6 giggles less than the area of the hydrocyclock of rotation 5, the drill arrow remains when the guide 3 rotates in a fixed position. The movement of the guide 3 along the production is made by pushing the hydraulic cylinder I, by supplying oil to the left cavity with a distributor 19. The volume hydraulic motor 17 remains in a stationary position, since the spool 15 is closed. The movement of the guideway 3 across the bottom is made by turning support 4. The proposed device will allow the same drill boom to drill the bottom and drill holes under the sucker rod, which increases the drilling performance and shortens the duration of the preparatory-final parallelism of holes and yx ends-and one plane allows you to increase the coefficient kpaf use of the hole. The invention of Burov boom, which is pivotally connected to the guide and support handle with hydraulic cylinders for pushing and lifting, turning mechanism yuschey, pilot cylinder with a hollow rod and a guide with a body and zolotnikom control guide, that in order to expand its area when