SU699168A1 - Submersible machine of rotary-percussive action for drilling holes - Google Patents

Description

one

The invention relates to the mining industry, in particular, to percussion rotary drilling machines used during drilling.

Shock-turning submersible machines are known, comprising a shock assembly, a rock-breaking tool and a braking device.

Closest to the proposed technical entity is a submersible machine of a rotary percussion action for drilling wells, which includes a housing installed in it, with the possibility of axial movement under the action of compressed air coming from a source of compressed air through the air distribution channel, front part, rock-destroying tool with its turning mechanism, and braking device

2

The disadvantage of this machine is the failure. regulating the efforts of its unfastening.

The aim of the invention is to provide a percussion-action submersible machine for boreholes, in which the forces of the fastening of the machine in the well are controlled.

This goal is achieved by the fact that the braking device of the machine is made of elastic chambers, which are located on the branch pipe and communicated with a source of compressed air, while additional channels are made in the branch pipe, housing and the drummer for periodically communicating the lower rus with the atmosphere. measures are communicated with a source of compressed air through the windows, which are made in the body of the nozzle.

FIG. 1 - schematically shows a submersible machine; in fig. 2 shows section A-A in FIG. one.

Claims (2)

The submersible rotary action machine comprises a housing 1, in which. Rum with the possibility of axial reciprocating movement installed drummer 2, made with a shank. Case 1 has heads 3 and 4. Head 4 has ratchet teeth 5, helicoidal rod 6, helicoidal sleeve 7 with spring-loaded ratchet cams 8, providing rotation of the destructive tool, for example, a drill bit 9 in one direction, and sleeve 10. The machine has an air distribution pipe 11, through which the air distribution channel from the compressed air source (not shown) receives energy (compressed air). The braking device is made of elastic chambers 12 and 13, which are located in cocks on pipe 11, separated by segments 14 and fixed on pipe 11 via bushings 15 and 16. The machine is connected to a source of compressed air through communication 17 with a flare nut 18. In pipe 11 Windows 19 and 2O are made to communicate elastic chambers 12 and 13 with a source of compressed air. The drummer 2 forms with the body 1 a working stroke chamber 21 and an idling chamber 22. Elastic chambers of the lower Rus 12 have the possibility of periodic communication with the atmosphere by means of additional channels 23 and 24, made in the pipe 11, channels 25 and 26 of the casing and channel 27 of the impactor, which is formed by a groove on its tail. Exhaust windows are made in the machine body. The machine works as follows. Compressed air from the source through the air distribution duct of the nozzle 1 1 and its windows 19 and 20 enters the elastic chambers 12 and 13, which expand and fasten the machine in the well. The chamber of the working stroke 21 through channels (axial and radially filled with compressed air, as a result of which the hammer 2 makes a working stroke and at the end strikes the helicoidal rod 6 with the drill bit 9. The crown 9 is inserted into the bottom hole and simultaneously rotates due to the interaction of the inclined grooves of the helicoidal rod 6 with a helicoidal sleeve 7. At the end of the working stroke, the impactor 2 with the IMPORTANT channel 27 opens the way for exhausting compressed air from the elastic chamber 12 of the lower arm through the channels 23, 24, 25, 26, 27 and exhaust 28. After exhausting, the volume of these chambers is reduced, therefore the force with which the machine is released in the well is reduced, by the time it moves to the slaughter under the effect of recoil forces of housing 1, during the reverse stroke of the striker 2. Before the impactor striker 2 With the helicoidal rod 6, exhaust air from chamber 21 is exhausted through exhaust ports 28 and compressed air is introduced into chamber 22 by means of drummer 2 channels. As a result, drummer 2 begins to idle, moving in case 1 from the bottom, and case 1 itself movesto the bottom of the well due to the recoil forces of the machine. At this point, the machine straightening forces in the well are minimal. With further movement of the striker 2 from the bottom of his shank closes the channel 26. In this case, the path for the exhaust from the chambers 12 is closed. Therefore, they are again filled with compressed air through the windows 19. The chambers 12 are completely filled with compressed air by the moment the striker 2 starts to move to the bottom of the well, which provides additional detachment of the submersible machine in the well. Thus, the additional effort to loosen the machine prevents it from moving from the bottom of the well due to the recoil forces of body 1 at working stroke of the striker 2. Constant communication of the elastic chambers of the upper tier with a source of compressed air and periodic, depending on the direction of movement of the hammer, filling allow you to vary the amount of force the machine holds in the well. Claims 1. Submersible impact-turning machine for drilling a borehole, comprising a housing installed therein with the possibility of axial movement under the action of compressed air coming from a source of compressed air through the air distribution channel of the nozzle, a hammer and a rock-breaking tool with a mechanism fixed in its front part its rotation, and the braking device, characterized in that, in order to regulate the efforts of the machine to unfix in the well, the braking device made of elastic chambers, which are located in the branch pipe and communicated with a source of compressed air, while additional channels are made in the branch pipe, housing, and drummer to periodically communicate the lower tier chambers with the atmosphere. 2. The submersible shock-rotary machine of claim 1, characterized in that the elastic chambers communicated with a source of compressed air through the windows, which are made in the body of the nozzle. Sources of information taken into account in the examination 1. USSR author's certificate number 533196, cl. E O2F 5/18, 1972. 2.Avtorskoye, certificate of the USSR in application No. 1826301/03, cl. E 21 C 3/24 1972 (prototype). s