UA4857U - Appliance for trenchless laying underground communications - Google Patents

Abstract

The appliance for trenchless laying underground communications has assembled beams, power hydro-cylinders, additional strike unit as a cylinder-accumulator connected to the force traverse, head, this is connected to the piston with possibility of action on the insertion in the traverse; the return cylinders of the piston and the head. At that, it is equipped with additional unit in the insertion of the traverse for formation of pulse water jet feeding to the area of the beams motion, as additional insertion-hydrocylinder.

Description

The useful model belongs to the field of engineering and is intended for trenchless laying of underground communications.

The design of the device for trenchless laying of underground communications is known ("Industria" Me2, 2002, p. 76-77. Hydraulic installations for trenchless laying of underground communications.), which includes folded rods, power hydraulic cylinders, resting on a power traverse and a bed on which clamp hydraulic cylinders, a hydromechanical key drive and a power and control hydrostation are installed.

Also known is the design of the device for pulsed supply of liquid or gas (AS 427204 USSR. E16K21/12

Device for pulsed supply of liquid or gas/ Roganov L. L. Publ. 14.01.1974, Bull. Moe17) with a locking body installed in the body, which is made in the form of a valve with a stem, and in order to increase the energy of liquid or gas release, a spring-loaded plunger relative to the body is movably installed on the valve stem, which interacts with the stem with the help of an additional spring.

Also known is the design of the IV-5 impulse water jet (Hydroimpulse installation for rock destruction / G. A. Atanov. - K.: Vyshcha shkola, 1987. - p. 45), which consists of a cylinder in which a piston moves, a barrel with a floating piston, nozzle, shut-off device, receiver with compressed gas, jacks with sliders, control valve.

The closest analog of the claimed device, chosen as a prototype, is a device for trenchless laying of underground communications (Patent 60656 A PA. IPK EOZEZ3/06 Device for trenchless laying of underground communications/ L. L. Roganov, M. L. Roganov, Korchak 0 . S. Publ. 15.10.2003, Bull. Me10), containing folded rods, power hydraulic cylinders, resting on the power traverse and the frame on which the clamp hydraulic cylinders are installed, the device is supplied with an additional shock device in the form of a cylinder connected to the power traverse - battery installed in the high-pressure cavity of the stepped plunger, which has a seal on the end of the body with a diameter larger than the diameter of the plunger at the exit from the cylinder - the battery, striker, connected to the plunger with the possibility of acting on an insert in the traverse, resting on the rod, reverse plunger cylinders and striker. Common essential features of the known and claimed device are folded rods, power hydraulic cylinders resting on the power traverse and the frame on which the clamp hydraulic cylinders are installed, an additional impact device in the form of a cylinder connected to the power traverse - a battery installed in a high-pressure cavity a stepped plunger, which has a seal on the end of the body with a diameter larger than the diameter of the plunger at the outlet of the accumulator cylinder, striker, connected to the plunger with the possibility of acting on an insert in the crossbar, resting on the rod, return cylinders of the plunger and striker.

During the operation of the well-known device for trenchless laying of underground communications, difficulties arise in overcoming hard soil rocks and hard inclusions in soft rocks, as well as friction in the process of advancing rods.

This causes the need to supply more energy from the hydraulic system and reduces the productivity of the installation.

The basis of the useful model is the task of improving the device for trenchless laying of underground communications, in which, by creating at the necessary moment, in addition to additional shock loads, also the pulsed supply of a water jet to the area of advancement of the rods, the efficiency of the advancement of the rods increases.

Due to this, the productivity of the device increases, friction and the level of energy consumed from the hydraulic system decrease.

The task is solved by the fact that the device for trenchless laying of underground communications is supplied with an additional device in the traverse insert for creating a pulsed supply of a water jet to the area of advancement of the rods in the form of an additional insert - a hydraulic cylinder, to which water under pressure is supplied through a non-return valve installed in the opening of the traverse, and the plunger of the hydraulic cylinder may contact the striker. In the main part of the rod, holes are made for the exit of water under pressure to the zone of advancement of the rods.

The proposed design ensures an increase in the efficiency of rod advancement by creating a pulsed supply of a water jet to the area of advancement of the rods at the required moment.

The use of a device for creating a pulsed supply of a water jet to the area of advancement of the rods allows to increase the productivity of the entire installation by facilitating the overcoming of hard soil rocks and solid inclusions in soft soils. At the same time, the speed of advancement of the rods increases, friction and the level of energy consumed from the hydraulic system decrease.

The essence of the proposed useful model is explained by the drawings, which show the schemes of the device for trenchless laying of underground communications.

Device for trenchless laying of underground communications fig. 17 contains a cylinder - accumulator 1, connected to a power traverse 2. In the high-pressure cavity of cylinder 1, a stepped plunger 4 is installed, which has a seal 5 on the end of cylinder 1 with a diameter larger than the diameter of plunger 4 and a seal b at the outlet of the cylinder - accumulator 1. The seal 5 cuts off the cavity 7 from the high-pressure cavity 3.

The striker 8 is connected to the plunger 4 and has the ability to act on the insert-hydraulic cylinder 9 with M - a similar cutout, which is installed in the power traverse 2.

Power cylinders 11 and return cylinders 12 for striker 8 are installed in the body 10. The rods of power cylinders 11 are rigidly connected to the power traverse 2, and the rods of return cylinders 12 enter the grooves of striker 8.

The cylinder - battery 1 is rigidly connected to the power traverse 2 with the help of pins 13 and can move in the guides 14.

On the housing 10, on the opposite side from the cylinder - battery 1 and coaxially with it, a plate 15 is fixed, on which a sleeve 17 with an M-like cutout is installed on bolts and springs 16. The rod 18 is placed in the M-shaped cutouts of the insert-hydraulic cylinder 9 and the sleeve 17 in such a way that the end of the rod 18 with an internal thread fits into the insert-hydrocylinder 9, and with the outer one - in the sleeve 17.

Rods 18 are made hollow in the form of pipes with an end seal. At the same time, the rod that will be advanced first has a pointed end with holes for spraying a jet of water under pressure.

A clamping device 19 and a screwing device 20 are installed in the housing 10. An additional clamping device 21 can be installed on the traverse 2, which works only when the rod 18 is pulled out of the ground 22.

Device for creating a pulsed supply of a water jet to the zone of advancement of rods 18 fig. 2 has the form of an insert-hydraulic cylinder 9, to which water under a pressure of about 0.1 MPa is supplied through a non-return valve 23,

installed in the opening 24 of the traverse 2. The insert-hydraulic cylinder 9 has a seal and consists of two connected cylinders - 25 and 26, which have a common plunger - striker 27. The main part of the rod is provided with holes 28 for the exit of water under pressure to the area of advancement of the rod 18 .

The device for trenchless laying of underground communications is installed and supported by 22 pounds.

The device for trenchless laying of underground communications works as follows.

In the initial position, power traverse 2 is in the extreme left position. The rod 18 is placed in the M-shaped cutouts of the insert-hydraulic cylinder 9 and bushing 17. Pressure is supplied to the piston cavities of the power cylinders 11, to the high-pressure cavity of the Z cylinder of the accumulator 1 and to the piston cavity of the reverse cylinders 12, the rods of which abut against the power traverse 2 and add effort to push the rod 18. In the high-pressure cavity C, the liquid is compressed, the cylinder 1 stretches in length and increases in diameter. The force from the power cylinders 11 is transmitted to the power traverse 2, and from it to the insert-hydraulic cylinder 9 with the rod 18 placed on it. The power traverse 2 with the cylinder - battery 1 fixed on it begins to move, pushing the rod 18 through the pound 22. At the same time, water under a pressure of 0.1 MPa through the non-return valve 23, the opening 24 in the traverse 2, the hydraulic cylinder 25 and the internal cavity of the rods 18 is supplied to the zone of their advancement. At the same time, the plunger striker 27 is in the extreme left position.

When hard rocks or hard inclusions in the soft rocks of the pound 22 appear on the path of advancement of the rod 18 and their overcoming becomes difficult, the cavity 7 of the cylinder - accumulator 1 is connected by the control system to the pressure that weakens the seal 5 and the liquid from the high-pressure cavity 3 , expanding, enters the cavity 7. The plunger 4 with the striker 8 moves with acceleration to the right and strikes the plunger-striker 27 of the insert-hydraulic cylinder 9, which is transmitted to the rod 18. At the same time, the plunger-striker 27 under the impact of the impact begins to move to the extreme right position , the water pressure in the hole 24 increases, the non-return valve 23 shuts off the water supply from the main line. The volume of water remaining inside the cylinder 25 and rods 18 is compressed and ejected with a pulsed jet through the holes in the pointed end of the first advanced rod 18, thanks to which it is easier to push it through the soil 22. The rods 18 have sealing on the end surfaces, so water leaks through threaded rod connections 18 are excluded.

After spraying a pulse jet in the cavity of the cylinder 25 and the hole 24, the water pressure drops sharply, the non-return valve 23 is activated, connecting the hole 24 with the water supply line under pressure, the plunger-hammer 27 returns to its original position.

The striker 8 is returned to the stop of the plunger 4 in the seal 5 by applying pressure to the rod cavities of the return cylinders 12, the rods of which enter the grooves of the striker 8. By alternating the operation of the cylinders 1 and 12, several blows can be applied to the rod 18, ensuring its gradual advancement.

At the end of the working stroke of advancing the rod 18, the insert-hydraulic cylinder 9 enters the sleeve 17, the springs 16 are compressed, advancing the rod 18 by the amount of compression. The working course of advancing the rod 18 is finished.

The return of the power traverse 2 to the initial position is carried out by applying pressure to the return cavities of the power cylinders 11.

The next rod is placed in the M-shaped cutouts of the insert-hydraulic cylinder 9 and bushing 17. Pressure is applied to the working cavities of the power cylinders 11. Power traverse 2 begins to move to the right until the collision of the laid rod with the already advanced one. The clamping device 19 clamps the end with the internal thread of the advanced rod.

The screwing device 20 screws the externally threaded end of the installed rod into the already advanced one.

After that, devices 19 and 20 open the rods. The work cycle is repeated.

Prevention of wrinkling of the end of the rod 18 is carried out by selecting the material for the insert 9.

When the advanced rods are pulled out of the ground 22, pressure is applied to the piston cavities of the power cylinders 11, thanks to which the power crossbar 2 moves to the extreme right position. The clamping device 21 clamps the end of the advanced rod. Pressure is applied to the rod cavities of the power cylinders 11, the power traverse 2 begins to move to the left, pulling out the rod 18 twisted together with the others from the ground 22. At the same time, each protruding rod is clamped by the device 19 and unscrewed by the device 20. After the rod is compressed by the devices 19 and 20, the rod is removed and the pull-out cycle repeats. 11.12 4 at 8 13. 9 7 21 18201917 16 15 27

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Fig. 7

Claims (2)

1. A device for trenchless laying of underground communications, containing folded rods, power hydraulic cylinders resting on a power traverse and a frame on which clamp hydraulic cylinders are installed, an additional shock device in the form of an accumulator cylinder connected to the power traverse, installed in a high-pressure cavity a stepped plunger, which has a seal on the end of the body with a diameter larger than the diameter of the plunger at the outlet of the cylinder-accumulator, a striker connected to the plunger with the possibility of acting on an insert in the crossbar, resting on a rod, return cylinders of the plunger and a striker, which differs the fact that it is equipped with an additional device in the traverse insert to create a pulsed supply of water jet to the area of advancement of the rods in the form of an additional insert-hydraulic cylinder, to which water under pressure is supplied through a non-return valve installed in the opening of the traverse, and the plunger of the hydraulic cylinder can contact the hammer. 2. The device according to claim 1, which differs in that water under pressure is supplied to the main part of the rod, in which holes are made for the exit of water under pressure to the zone of advancement of the rods.