SU1599638A1 - Device for driving blast-holes - Google Patents

Abstract

The invention relates to mining and can be used to punch wells when they are drilled with the placement of drill cuttings around the wellhead. The purpose of the invention is to increase the productivity of the tamping. The device includes a frame with guides 2, a system for raising and lowering the working body (PO) mounted on the guides by means of sliders 4 and a drive 6 RO. The ro is made in the form of a hollow shaft 9 with radially mounted HEATING BLADES 26 on it, BENT IN ROTATION. COAXIAL INSIDE SHAFT 9 A SAFETY TUBE (PT) 10 has been installed to pass a detonating cord (LH) with the possibility of rotation and longitudinal movement of the shaft 9 relative to it. The lowering and raising of the RO is performed by the hydraulic cylinder 8. Through the PT 10, the LH is passed through and through the flexible link 20 is connected to the counterweight 24, and the PT 10 is connected through the flexible link 18 to the loop 19. The hydraulic cylinder 8 PO is lowered until it touches the slurry. Rotating, the blades 26 move the sludge from the periphery to the wellhead and fall asleep. At the end of the work, the RO is lifted, the LH is released from the counterweight 24. By loop 19, through link 18, they lift the PT 10. 1 zpff-ly, 3 sludge.

Description

The invention relates to mining and can be used for drilling wells while drilling with the placement of drill cuttings around the wellhead.

The aim of the invention is to increase the productivity of the tamping.

FIG. 1 shows a diagram of the device; in fig. 2 - the same plan view; in fig. 3 - device, axonometrics.

The device includes a frame mounted on brackets 1 with guides 2 and with lower and upper crossbars 3. Guides 2 with a possibility of longitudinal movement are equipped with a system for raising and lowering the working element, consisting of sliders 4 with cheek bones 5, between which the rotation drive b is fixed . Shells 5 are connected by a plate 7, to which is pivotally attached the brush of the hydraulic cylinder 8, the cylinder of which is hinged to the upper crossbar 3. Inside the hollow shaft 9 of the working element, coaxially, there is a safety tube 0 for the detonating cord. (LH), with the upper part of the shoulders 11 resting on the guide 12 attached by brackets 13 to the cheeks 5. The lower end of the tube 10 is placed in the well 14 below its mouth. On the upper crossbar 3 brackets 15 are installed with two blocks 16 and 17 at their free ends. Through block 16, a flexible link 18 is pulled, for example, a cable, one end connected to the flange 11 of the tube 10, the second free end is connected to a loop 19. Through block 17, the flexible link is laid in the form of a cable 20, at one end of which a hook 21 is fixed hinged on it by a loop 22 of the detonating cord 23, passed through the tube 10 from the well 14. At the second end of the cable there is a counterweight 24. To the lower end of the shaft 9, the stiffness plate 25 is radial relative to the shaft 9 curved in the direction of rotation of the scoring blades 26 with teeth 27 on the cutting edge . The cutting edges of the blades 26 are in contact with the cuttings 28.

The device is mounted coaxially with the bore 14, and the actuator 6 is lifted to the upper extreme position by the hydraulic cylinder and the flexible coupling tube 10 creates a gap between the blades 26 and bu

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with a flat slit 28 into which zone a hook 21 at the end of the flexible link 20 is lowered through the tube 10. A hook 22 is visited at the loop 22 at the end of the spiral screw 23 and when the counterweight 24 is lowered the end of the spiral screw 23 is pulled through the tube 10. The counterbalance 24 size holds the secondary screw 23 in the boosted state. The tube 10 is lowered until the flange 11 is in contact with the guide 12, while the lower end of the tube 10 is lowered into the well 14 well below its mouth, the hydraulic cylinder 8 and the drive 6 of the blades 26 turn into operation. The tube 10 is then lowered along with the rotation drive 6 . Upon contact of the cutting edges of the blades 26 with the slurry 28, the slurry, previously loosened by the teeth 27, due to the curvature of the blades 26 moves from the periphery to the center - to the wellhead 14, drops between the walls of the wells 14 and the tube 10 and fills the well 14. At the end of the drilling the borehole stops the rotation of the blades 26, is removed from the hook 21 of the loop 22 LH 23, and the rotational drive 6 is raised with the tube 10 to the upper end position. Subsequently, the tube 10 rises as force is applied to the loop 19 until the lower end of the tube reaches the level of the cutting edges of the blades 26. The cycle repeats when the next well is driven down.

Claims (2)

Invention Formula . A device for tamping explosive wells, including a guide frame, a system for raising and lowering a working body installed on it, a working body with scooping blades and a driving body drive, characterized in that, in order to improve the performance of the tamping, the working body is made in the form of a hollow shaft rotationally coupled to the drive, with the scooping blades mounted radially on the shaft and bent in the direction of rotation. 2. The device according to claim 1, characterized in that it is provided with a safety tube for passing the LH (detonating cord), which is coaxially mounted inside the shaft for rotation and longitudinal movement of the latter relative to this tube. FIG. 2: