SU825823A2 - Planetary reducing gear for hole-bottom motors - Google Patents

Description

(54) PLANETARY REDUCER FOR BOTTOM ENGINES

section bb in fig. 2; FIG. 4, section B-B in FIG. 3,

The gearbox has closed sinusoidal treadmills on the external surfaces of the bushings 1-5, and keyways on the internal surfaces of the bushes. The rod 6 has the shape of a thick-walled pipe with a flat all along its length; radial holes are produced along this flat. Sleeve 1-5 and the rod 6 form the drive shaft. The radial holes of the rod are inserted by cylindrical protrusions of the upper girder support 7, two shoulders levers 8-11 and the lower beam supports 12. Beam supports 7 and 12 have (Fig. 4) an L-shaped form and two shoulders - T-shaped, which ensures non-falling of these parts into the inside of the rod 6. Beams 1317 are plates with two parallel flat surfaces, one of which is in contact with the tongue of the connecting shaft 6. The case of the beam interacts with the corresponding sleeve and the shoulders of the adjacent two shoulders. Beam supports interact with the extreme beams 13 and 17. The lateral dimensions of the double-arm levers are somewhat smaller than the corresponding transverse dimensions of the keyway, which ensures them, and therefore the bushes: 1-5, the possibility of some rotation relative to the rod 6.

Two-arm levers, beams and beam supports form a keyed lever-beam moment divider connecting sleeves 1-5 with rod 6. Closed sinusoidal treads are produced on gearbox housing 18. tracks with the number of periods 7., the number of periods of the sinusoidal race to the leading shaft horn is 7., The amplitudes of the sinusoids on the hubs 1-5 and the casing are the same.

Between the drive shaft and the housing there is a driven shaft 19 with longitudinal slits under the ball satellites 20. Satellites are inserted into the grooves and Cuts through the radial (not shown) holes in the gearbox housing. the slots are spaced apart by the same angular spacings

-2

21

either C

,

vsh.k

When the drive shaft rotates, the driven shaft (when the casing is braked) rotates with angular velocity

 vic

.

VSh, t

or

 In w,

 -So

eat

8UI, t G

to you,

From the equilibrium equations, compiled for parts 8-11 and 13-17, it is obtained that the force acting from the length of 1 beam 13 on sleeve 1 is equal to the force with which beam 15 acts on sleeve 3, etc., i.e. The considered lever key 12-13-1 14-10-15-9-16-8-17-7 is a divisor of the transmitted moment.

The use of the proposed gearbox will increase the time supplied to the bit and increase the mechanical speed of drilling.

Claims (2)

1. Planetary gearbox for downhole motors according to ed. St. No. 605926, excluding the fact that in order to increase durability due to a uniform division of the moment by individual motors for a multi-gear reducer, the drive shaft or housing is made in the form of a rod and bushings, each of which has a sinusoidal treadmill, the sleeves being connected with each other and with the rod by means of a key lever moment beam divider. 2. The planetary gearbox according to claim 1, characterized in that the rod is made with radial holes g-sh, and the key-lever-beam moment divider is made in the form of double-shouldered levers with cylindrical protrusions, beams and beam supports, each beam is installed with the possibility of interaction with the corresponding sleeve and shoulders of the next two shoulders, the cylindrical projections of which are placed in the radial holes of the rod, and the beam supports are installed with the possibility of interaction with the extreme bar. - Sources of information taken into account in the examination 1. USSR author's certificate No. 605926, cl. Е 21 В 3/10, 1975 (prototype), 20 p1 (W.J ss Fy