SU939757A1 - Drilling set - Google Patents

Description

(5f) DRILLING UNIT

The invention relates to the mining industry, namely drilling machines for drilling holes.

Known drilling unit, including the shock-rotational mechanism, the feed mechanism and the distributor of the cleaning system of the hole.

The closest to the present invention is a drilling unit, which includes a percussion / rotation mechanism, a feed mechanism with a force regulator in the pressure chamber during drilling, and a dispenser for the bore-hole cleaning system with a control chamber, whose inputs are connected to air and water systems, and central channel drill rod f 2.

However, these devices do not provide for the automatic elimination of the hole stitching during drilling, which does not allow to increase the drilling efficiency.

The purpose of the invention is to increase the drilling efficiency due to the automatic elimination of the hole stitching during drilling.

The goal is achieved due to the fact that the control chamber of the distributor of the bore-hole cleaning system is hydraulically connected to the pressure head when drilling

10 filing.

The drawing shows a schematic diagram of the device.

The drilling unit includes a running gear 1, on platform 2 of which a compressor 3 and a hydraulic station C15 are located, driven, for example, from a diesel engine running gear 1. On platform 2, a drill truck is placed with the possibility of moving along the platform

Claims (2)

20 5, on which the distribution cranes of the control unit for the drilling unit and the manipulator 6 are mounted. On the upper tip of the manipulator 6, the beam 7 is fixed with the drive 8 of the feed mechanism. Along the guides of the beam 7, a percussion-rotating mechanism can be moved, consisting of a percussion unit 9 and a rotation mechanism 10 of the drill rod 11 with a crown, a pressure regulator 1 is installed in the pressure head when drilling 12 and in the return line 13 of the feed mechanism The cavity is connected to the pressure line 15 of the rotation mechanism. The distributor 16 of the bore-hole cleaning system is attached to the drill trolley j, the inlet 17 of the distributor is connected to the water system of the drilling unit, and the inlet 18 is connected to the air system. The output 19 is distributed} | n connected to the central channel of the drill rod 11, for example, by means of a side-flush coupling 20. The control cavity 21 distributes the bodies through a throttle 22 to a delivery line 12 of the forward feed mechanism. The spool 23 with one hundred control cavity 21 is coupled to the shaft 2k with the mechanism 25 for rapid transfer of the spool, and on the other side is pressed by the spring 26 supported by the adjusting screw 27. The stops a and b restrict the axial displacement of the spool 23. The device works as follows . After the chassis is installed on the drilling position and the drill rod 11 is guided onto the bore hole, the drives of the rotation mechanism 10 and feed 8 are turned on. After the drill rod 11 of the rock touches the rock 11, the impact unit 9 is turned on. is fed through the control valve 22 into the control cavity 2 of the distributor, the valve 23 is displaced to the right until the blowfire, compresses the spring 2b, and water is fed from the drilling unit system to the hole. At the end of the drilling, the hole is turned on automatically or by the driller to reverse the feed mechanism. In this case, high pressure is supplied to line 13, and pressure in line 12 drops sharply to pressure. The pressure drop in cavity 2 in | 4 is the offset of the spool 23 to the left under the action of the spring 2b. At THIS, after passing half the stroke of the spool 23, the mechanism 25 accelerates it to the left as far as it will go. The air from compressor 3 through the inlet 18 of the distributor, the groove in the spool 23, the outlet 19 and the coupling 20 is fed into the central channel of the drilling tool 11 to blow a hole. If, during the drilling process, the moment of resistance on the drive of the rotation mechanism 10 sharply increases, which is a consequence of the bar spewing or stinging, the drilling controller 14 comes into operation, reducing the pressure in line 12 up to the reverse. In this case, if for some time a low pressure in line 12 is created, the valve 16 is actuated, as described above. The delay time of the operation of the distributor is determined by the parameters of the throttles 22. Automatic activation of the purge both during jamming and during sealing speeds up the process of getting out of an emergency situation, which increases the drilling efficiency. The invention The drilling unit, which includes a rotary percussion mechanism, a feed mechanism, with an amplifier 11 in the pressure chamber during drilling, and a distributor of the bore-hole cleaning system by a control camera, the inputs of which are connected to air and water systems characterized in that, in order to increase drilling efficiency by automatically eliminating the hole stitching during drilling, the control chamber of the distributor of the hole cleaning system is hydraulically connected to the pressure head during drilling and the main feed mechanism. Sources of information taken into account in the examination 1. Analysis of designs of self-propelled drilling units. Sat, Part 1, Frunze, Ilim; 1975. 2. Feldman 8.Ya., Kostalevsky V.M. Drilling machine control systems. Patent review. M., ZNIEIugol, 197, rice. 3 (prototype).