SU1579966A1 - Movable rotator swivel head - Google Patents

Abstract

The invention relates to the mining industry and is intended for drilling. The goal is to increase the productivity of drilling. For this, the rotator is equipped with a vibromechanism, made in the form of a planetary differential with conical wheels (K). The master 9 and the slave 10 central differential K have a gear rims with cutting made on undulating initial surfaces and are rigidly connected respectively with the driven gear 8 of the gearbox and with the spindle (W) 4. The shaft 12 of the satellite 11 is connected by means of sliders 13 sec. carrier 15 and W 4 and is mounted for movement along the latter. The carrier 15 is spring-loaded with respect to W 4 and installed with the possibility of rotation and fixation with respect to the latter. As a result of the interaction, K 9, 10 and the satellite 11 III 4, together with the drill pipe string, receive a cyclic helical motion relative to the housing 1 of the rotator. In sum with the portable movement of the axial feed caused by the operation of the hydraulic cylinders 18, the screw movement ensures the drilling process. The amplitude of the axial oscillation W 4 can be adjusted directly along the way. As a result of the adjustment, the crests and troughs of the wavy surfaces K 9 and 10 are out of phase. 1 il.

Description

rigidly connected to the vibrating mechanism central gear 9, and they are fixed relative to the body in the axial direction, and the central driven wheel 10 is rigidly connected to the spindle 4.

The gear rims of wheels 9 and 10 are cut on wavy initial surfaces. The wheels 9 and 10 interact with each other through an intermediate satellite 11t, the shaft 12 of which is placed in a slider 13 mounted on a straight guide 14 of the carrier 15 with the possibility of translational movement along the spindle axis. The carrier 15 can be rotated around the axis of the spindle 4 by means of a worm sector 16, which engages with the screw 17, and can be fixed in the desired position due to the fact that the worm gear is self-braking. In this case, if the shape of the wavy initial surface of the wheel 9 provides for the movement of the gear wheel 11 along the axis of the spindle 4, for example, according to the following law:

5 „cos (Kgw9t + ifg) j, and the shape of the wavy initial surface of the wheel 10 ensures its axial movement relative to the wheel 11 according to the same law:

SIB A, D1 - cos (K (e u, (9t - Cpf0) j then the total movement of the wheel 10 and therefore, the spindle 4 relative to the housing 1 occurs according to

 G t P

0

S. 9

 Yu h) J

S p + S 0 - A9 l-cos (K3W9t + i- Af0 l-cos (K ,, ulft

Lo1

one

Wq. W, B - (0) J.

(one)

where Hell is the amplitude of the cyclic axial movement of the wheel 1I relative to the wheel 9; the amplitude of the cyclic axial movement of the wheel 10 relative to the wheel 11; angular speeds of wheels 9 and 10;

the number of waves on the initial surfaces of the wheels 9 and 10; time;

the initial angular position of the wheel 9 relative to the body 1;

the initial angular position of the wheel 10 relative to the wheel 9, and in the initial position, the ridges and the bottom

 9 Ka, K

Yu

t v

Yio

0

five

0

five

0

five

Dines of waves of wheels 9 and 10 coincide. In the particular case, when AO A 10 A, K9 k fo K, she UL) O in accordance with expression (I), axial oscillations of spindle 4 are absent when H 1 o V and occur with m maximum amplitude 2A at q 0.

Thus, the range of variation of the angle of rotation of the carrier 15 when adjusting the amplitude of the axial movement of the spindle is 0 - 180 °.

The number of intermediate wheels 11 should be a common divisor of the numbers K. and

TO

fo

and in the general case can be greater than one.

Hydraulic cylinders 18 of axial feed are connected to the housing 1 of the rotator. For the free axial translational movement of the rotator and the sensing of the reactive torque during drilling or screwing - unscrewing the drill pipes, the rotator case 1 is provided with rollers 19 covering the mast elements.

For the force closing of the wheels 9, 10 and 11 between the carrier and the wheel 10 a screw spring 20 is installed.

The movable rotator for the rotary-percussion drilling drilling rig works as follows.

From the motor, through the gear unit 5, one of the gears 6, gear 7 and 8, the rotation is transmitted to the driving wheel 9 of the vibrator. As a result of the interaction of gear wheels 9, 11, 10, the spindle 4, together with the drill pipe string, receives a cyclic helical motion relative to the rotator body 1, which in total with the axial feed movement caused by the operation of the hydraulic cylinders 18, ensures the drilling process.

The amplitude of the axial oscillation of the spindle 4 can be adjusted directly on the fly. To do this, turn the screw to 17 with the handle and rotate the screw sector 16 and the associated carrier 15 at the required angle.

As a result of the adjustment, the crests and troughs of the wavy initial surfaces of the wheels 9 and 10 are shifted in phase by the required angle cf, which ensures, in accordance with the formula

/ / / / 6 b

nineteen

16 20 T7 I

Claims (1)

Claim The mobile rotator of the drilling rig, including the drive connected to the gearbox and the spindle, is characterized by the fact that, in order to increase drilling productivity, it is equipped with a vibro mechanism made in the form of a planetary differential drive and driven central wheels of which have gear rims with> sharp, made on wavy 5 initial surfaces, and are rigidly connected respectively with the driven gear of the gearbox and with the pin, and the satellite shaft is connected by means of sliders to the carrier and spindle Yu and installed with the ability to move along the latter, while the carrier is spring-loaded relative to the spindle and mounted for rotation and fixation with respect to the differential with conical wheels, ice,