SU630361A1 - Percussive-action device for making holes in ground - Google Patents

Description

one

The invention relates to the field of construction equipment and is intended for drilling wells in the ground mainly in the case of trenchless laying of underground utilities.

A device for drilling wells in the ground is known, comprising a housing, a drummer and means for reversing the stroke of the device 1.

The disadvantage of this device is the complexity of the design, lack of ease of maintenance.

The closest to the invention to the technical essence and the achieved result is a percussion device for an established well in the bulk, containing a housing housed therein with the possibility of axial reciprocating movement under the action of compressed air of its working chambers, the impactor, in the cavity of which a two-stage nozzle is mounted, connected to the hull N, made up with a partition and air through windows, while in the nipple with a possibility of rotation relative to it installed two-stage The hub sleeve is made with a partition between the steps of H and has windows with a width of 2) diameter 2.

2

A disadvantage of this device is the spontaneous imbalance of its mode of operation during each (even accidental) interruption in the supply of compressed air, which significantly reduces the convenience of servicing and the reliability of operation. In addition, the device has a rather complicated construction {Yu.

The aim of the invention is to increase the operational reliability of the device.

the possibility of a spontaneous change in the mode of operation.

This is achieved by the fact that the baffle septum has an end stop to interact with the nozzles, which are formed in its septum, and are made of an elastic material. Irn the atom of the socket of the branch pipe is spaced apart around the circumference of its partition, and the sleeve is set relative to the branch pipe fixedly in the axial

direction.

FIG. 1 shows schematically a device, a general view with a partial section along the axis; in fig. 2 shows section A-A in FIG. one.

Claims (2)

The device comprises a housing 1, a drummer 2, a two-stage tube 3, a sprue 4 between the steps, a window 5 in the partition and windows 6 in the hospital step 7, a two-stage sleeve 8 with an elastic partition 9 between the steps, which is provided with an end stop 10 And with windows And in the step 12 of a larger diameter. In the partition 4 of the pipe 3 is made of two sockets 13, spaced apart from each other but the circumference. On the partition 4, there are also stops 14 and 15, and on the sleeve 8, stops 16 and 17, limiting the movement of the sleeve 8 around the axis in the axial direction. Compressed air to the device is supplied through a hose 18. The device operates as follows. In the “Forward running mode of the port of the nozzle b are closed by a larger step 12 of the sleeve 8, the stop 10 interacts with the stop of the 14 nozzle. Under the action of compressed air entering through the hose 18 into the working chambers of the device, the striker 2 makes a reciprocating motion and strikes the nose of the housing 1, which moves in the ground, leaving a well behind. At the same time, the operation of compressed air underneath the sleeve 9 of the sleeve 8 is deformed, and the end stop 10 enters the slot 13, fixing the sleeve 8 against rotation around the axis. The deformation of the partition 9 of the sleeve 8 contributes to the presence of a window 5 open to the atmosphere. To switch the device to the "reverse" mode, it is necessary to stop the supply of compressed air. Then the elastic nonreborka 9 of the sleeve 8 occupies the initial position, and the stop 10 comes out of the socket 13. Next, turn the sleeve 8 by turning the hose in such a way that the face unnor of the device rises into the interaction with the hole 15, the window And the sleeve 8 of the cTafioBHTCH against the windows 6 branch pipe 3 .. Then the compressed air supply is renewed, but at the hose 18, the central channel of the sleeve 8n through the windows I and 6 of the sleeve 8 and the nozzle 3 enters the working chambers of the device. The elastic partition 9 of the sleeve 8 is deformed, and the frontal Uior 10 enters the second slot 13, locking the sleeve 8 against rotation relative to the nozzle 3. The drummer, making a reciprocating movement, strikes the tail section of the housing. Under the action of these blows, the device moves along the well to the launch site. The device is switched from reverse to forward in reverse order. Claim 1, A percussion device for the formation of wells in the ground, comprising a housing housed therein with the possibility of axial return-and-motion movement of the nodes by the action of compressed air of its working chambers a drummer, in the cavity of which a two-step nozzle connected to the housing and made with a baffle and air through the windows, while in the pipe with the possibility of turning relative to him installed two-step sleeve, made with a partition between the steps and have on at step of larger diameter, characterized in that, in order to increase the operational reliability of the device by eliminating the spontaneous shift operation, the sleeve has a dividing wall socket abutment for engagement with pipe sockets, which are formed in its wall and made of an elastic material. 2, the apparatus according to claim 1, characterized in that the nests of the nozzle are spaced apart along the circumference of its partition. 3. A device according to claim 1, characterized in that the sleeve is fixed relative to the nozzle stationary in the axial direction. Sources of information taken into account during exnertization, 1.Authorial certificate of the USSR. № 238424, cl. E 02F 5/18, 1965. 2. USSR author's certificate JVS 310566, cl. E 02F 5/18, 1967. t Aa 13 one fua.Z