SU1006639A1 - Device for making holes in soil - Google Patents

Abstract

DEVICE FOR WELLING WELLS IN THE GROUND, containing a housing, a drummer with windows, an air distribution mechanism that includes a valve with recesses shifted around the circumference at both its ends and installed with the possibility of rotation around the axis, characterized by the fact that with a chain to increase the energy of a single stroke, the valve has a protrusion, and a drummer placed oblique stops positioned along its axis to interact with the protrusion of the valve.

Description

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J The invention relates to construction equipment and can be used for trenchless laying of underground utilities. A pneumatic percussion device for penetration of wells in the ground is known, containing a 1 case, an impact window with windows, an air distribution mechanism including a valve periodically blocking the windows of the impactor 1. A disadvantage of the known device is low productivity due to the low impact energy due to small the time of air intake in the front chamber of the machine after the impact and the early intake of air into it before the impact. The closest to the invention in technical essence and the achieved result is a device for drilling wells in the ground, comprising a housing, a hammer with windows, an air distribution mechanism; m, including the valve with offsets around the circumference of the edges of both its ends and installed with the possibility of rotation around the axis. The flap periodically overlaps the windows of the striker during its reciprocating movement. 2 The disadvantage of this device is the low efficiency due to the same reasons as the device described above. The aim of the invention is to increase the energy of a single blow. This delta is achieved by the fact that, in a device for drilling wells in the ground, comprising a housing, a hammer with windows, an air distribution mechanism that includes a valve with recesses shifted around the circumference at both its ends and installed with the possibility of rotation around an axis, the flap is provided with a protrusion, and the hammer is placed along its axis of the cospion with stops for engagement with the protrusion of the flap. Thus, depending on the position of the impactor, the damper will rotate relative to the axis of the impactor and, accordingly, the windows of the impactor will overlap with end edges (1 G1 or the edges of the recesses of the damper. This increases the air intake time in the front chamber after impact and a longer time The front camera communicates with the atmosphere before the impact, which, in turn, increases the energy of a single strike. A general view of the devices is shown in Fig. 1. A partial longitudinal section is shown; the position of the parts corresponds to the moment of impact of the striker on the corrus and the beginning of the movement of the striker back), in Fig. 3 - section A-A in Fig. 2, in Fig. 4 - section B-B in Fig. 2, and in Fig. 5 2; Fig. 6 shows the position of the parts but Fig. 5 at the beginning of opening of the windows of the firing pin with the rear edge of the flap, and Fig. 7 shows the position of the details of Fig. 2 at the extreme position of the striker and the beginning of its movement forward; - D in Fig. 7; Fig. 9 is a section D-D in Fig. 7; in fig. 10 is a view of E in FIG. in fig. 11 shows the position of the parts of FIG. 5 at the beginning of opening the windows of the firing pin with the front edge of the flap. The device includes a housing 1, ;; in which there is a drummer 2 C with windows 3 and a stem 4c with a flap 5. Valve 5 has notches 6 and 7 (Fig. 4) and a protrusion 8. Front 9 and rear 10 flap edges 5, as well as edges 11 and 12 (FIG. 7) of the recesses 6 and 7 of the valve 5 interact with the drummer 2, overlapping its windows 3. The drummer 2 is made with oblique stops: the front 13 and the rear 14. The stops 13 and 14 of the drummer 2 interact with the protrusion 8 of the valve 5. Between the housing 1 and the drummer 2 There is a front chamber 15, and the cavity of the drummer 2 forms the rear chamber 16. / Window interaction mechanism 3 the drummer 2c flap edges 5 is an air distribution mechanism of the device. Since the increase in the air intake time in the front chamber of the shock and the increase in the communication time of the front chamber with the atmosphere before the impact occurs due to the combination of the windows 3 of the striker 2 and the notches 6 and 7 of the valve 5, the latter must have a width N not less than the width K of the windows 3 of the shock 2. Since the rotation of the valve 5 to align its recesses 6 and 7 with the windows 3 of the striker 2 takes place when the projection 8 of the valve 5 interacts with the oblique stops 13 and 14 of the impactor 2, the width M of the latter must not be less than the width N of the recesses 6 and 7 of the valve 5. The device works after blowing way. Compressed air (Fig. 1-5) from a source (not shown) enters the rear working chamber 16 and through the windows 3 of the firing pin 2 into the front working chamber 15. Due to the difference in the working areas of the shock 2 from the front 15 and the rear 16 chambers, the firing pin 2 begins move backwards (in figs. 1 and 2 - to the right). Moreover, the compressed air through the recess 6 of the flap 5 and the window 3 of the striker 2 enters the front working chamber 15 until the windows 3 of the striker 2 pass the edge 11 of the notch 6 of the flap 5. Now the windows 3 close

310066394

damper S and further movement of the edge of the window 3 drummer 2 Pass the edge

drummer 2 is due to the expansion 9 of the flap 5, the rear oblique emphasis 14 shock air in the front chamber 15. The drummer 2ka 2 will go in (X is touching the protrusion

moves until then; while his window 38 flaps 5 (Fig. 11) and will begin the inlet

will not fit to the front edge 10 of the air damper valve from the rear chamber 16 through windows 3

5. While the front oblique emphasis 13 drummer / darnik 2 in the front of the working chamber 15

2 enters the resistance with the protrusion 8. devices. Move further forward (left),

damper 5 (Fig. 6). With further re-drummer 2 His rear oblique, focusing 14

Moving the drummer 2 back (to the right) of the backward displacement moves the protrusion 8 and the flap 5 rotates the edge of the window 3 and passes the edge 10 of the flap usus about its angle about its axis

5 and the opening of the window 3 of the drummer 2 begins. 2 So that the parts will take the position shown

and exhaust air from the front of the camera 15.

Drummer 2 by inertia continues to move backward (to the right), while it is oblique. The surface of its front stop 13 moves the protrusion 8 of the valve 5 from the position shown in FIG. 6, in a lower position (FIG. 10), the protrusion 8 of the flap 5 rotates the flap 5 through a certain angle (FIG. 7), so that the notch 7 of the flap 5 will face the percussion window 3: 2.11 by air in the rear chamber 16, the striker 2 stops and starts n) forwarding (lEFT)). After the windows 3 of the striker 2 have passed the edge 12 of the recess 7 of the shutter 5, they will close and the air in the front of the chamber 15 will begin to compress. After the front

in fig. 5, and the recess 6 of the flap 5 will face up against the window 3, the striker 2 will strike the front end of the device body.

Then the cycle repeats.

Under the action of these impacts, the device moves in the ground, leaving a well behind it.

The presence of the protrusion of the valve and the oblique stops of the striker allows the time of overlapping of the windows of the striker depending on its position and, thus, to increase the reminding of the front chamber to the atmosphere or the time of air intake to the front

camera, which, in turn, increases the energy of a single impact and, accordingly, the efficiency of use of the device.

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Claims (1)

DEVICE FOR DRILLING WELLS IN THE SOIL, comprising a housing, a hammer with windows, an air distribution mechanism including a damper with circumferentially offset recesses from both ends thereof and mounted to rotate about an axis, characterized in that, in order to increase the energy of a single impact, the damper has a protrusion, and the striker placed along its axis oblique stops for interaction with the protrusion of the valve.