Device for drilling wells in ground

FIELD: construction.

SUBSTANCE: device comprises screw pivotally connected with the conical working tip without permitting mutual rotation. The tip receives vibrator for generating circular vibrations. The vibrator is made of unbalance mounted on rotating bearings inside the conical working tip and is connected with the motor through a flexible shaft. The motor is mounted inside the additional housing connected with the working tip through a flexible link.

EFFECT: enhanced efficiency.

1 dwg

 

The invention relates to the construction, namely, devices intended for trenchless laying of pipelines, and can be used for a device hidden transitions in the construction of pipelines, underground cable lines and power lines.

A device for formation of wells in the ground, containing conical working tip with a screw blade, a flexible shaft connected with the drive outside of the well [1].

The closest to the proposed invention to the technical essence and the achieved result is a device for the formation of wells in the ground, comprising a screw, the screw is connected to the hinge without the possibility of mutual rotation with the cone tip, which is installed inside the circular vibrator oscillations in the form of an electric motor mounted on its shaft de-balancers [2].

A disadvantage of the known device is the low efficiency associated with the fact that develop de-balancers vibrator disturbing force is spent not only on the seal (plastic) well, but the fluctuations of the tip, the amplitude of which excluding the oscillating mass of soil can be defined:

where m0- weight of non-balances vibrator, kg;

e0- the eccentricity of the eccentric weight is in, the distance from the rotation axis to the center of gravity unbalance, mm;

m is the mass of the oscillating parts of the handpiece, kg:

m=m0+m1+m2(2)

where m0- weight of non-balances, kg;

m1- weight body of the handpiece, kg;

m2- weight of motor kg

Calculations show that the mass of the motor in the known device is approximately 70% of its oscillating mass. As can be seen from the formula, reducing the oscillating mass of the tip ceteris paribus increases the amplitude of its oscillations, and consequently, the intensity of its impact on the soil, resulting in faster drilling a well.

The purpose of the invention is to increase the efficiency of the device.

This objective is achieved in that the circular vibrator vibrations made in the form of unbalance installed on poles of rotation in the working tip, and a flexible shaft connected with the engine installed in the additional housing connected to the tip of the flexible connection.

The drawing shows a device for the formation of wells in the ground.

Device for trenchless drilling horizontal wells in the ground contains a screw propeller made in the form of a conical spiral blade 1, is welded to the shaft 2, without the possibility of relative axial rotation, W is Merom 3 and the plug 4 is connected with a conical working tip 5, inside the tip of the slider 6 has a rotation unbalance 7. Shaft unbalance through the coupling halves 8 and 9 of the flexible shaft 10 is connected with the motor 11 driven non-balances, which is installed in the annexe 12, equipped with stabilizer 13. The flexible shaft 10 is placed in a flexible sheath 14, one end of which is threaded through the tip 15 is connected to the flange 16 fixed to the end of the tip 5 and the second end of the flexible sheath 14 through the support ring 17 and the thrust bearing 18 mounted in the additional housing 12 of the motor 11. The cable 19 provides power to the motor.

For the implementation of drilling a well includes an electric motor 11, through which the coupling halves 8, 9 and the flexible shaft 10 transmits the rotation of the balance weight 7. The balance weight 7, rotating, creates a disturbing force that through the support 6 is transferred to a conical working tip 5. Under the action of this force the conical working tip 5 performs a circular vibrations, compacting the soil in the borehole wall. As soon as the soil is compacted and the diameter of the hole becomes larger than the diameter of the conical working tip, there is running. Cone work the tip starts to rotate in the borehole in the direction opposite to the direction of rotation of the unbalance 7. Rotating, conical working tip through a ball bearing 3 and keyed connection 4 transmits the torque shaft is 2 with screw blades 1, which, Wencelas in the ground, move in the direction of penetration of a conical working tip 5, forming the well. Flexible sheath 14 of the shaft 10 does not prevent the running of the working tip 5 well as connected to the housing 12 through the support ring 17 and the bearing 18 and transmits only axial force required for moving the enclosure 12 through the borehole. The stabilizers 13 quenched reaction torque occurring at the stator of the motor 11.

The implementation of the vibrator circular oscillation in the form of unbalance 7 mounted in the bearings of rotation 6 in cone operating tip 5 and connected to the flexible shaft 10 of the motor 11, which is installed in the additional housing 12 connected with the working tip 5 a flexible sheath 14, can significantly reduce the oscillating mass of the tip that leads to an increase in the amplitude of its oscillations, and hence the intensity of the conical working tip on the ground. As a result of this increased rate of penetration of wells, reduced specific energy consumption for the sinking of wells. Engine installation in an additional case, which is not subjected to vibration, improve its operating conditions, will increase the reliability and durability of the device and will be used to drive devices motors for General use.

Sources of information

1. U.S. patent No. 3550698, CL 175-57, published. 1970.

2. USSR author's certificate No. 899791 M CL E 02 F 5/18, published. 23.01.1982 (prototype).

Device for the formation of wells in the ground, comprising a screw, the screw is connected to the hinge without the possibility of mutual rotation of the cone with a working tip which is installed inside the vibrator circular oscillation, characterized in that the circular vibrator vibrations made in the form of unbalance installed on poles of rotation of the cone in the working tip, and a flexible shaft connected to the engine, which is installed in the additional housing connected with the working tip of the flexible connection.



 

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