SU1486671A1 - Torque converter - Google Patents

Description

The invention relates to mechanical engineering. In order to increase durability by increasing smoothness of work and reducing wear in the absence of lubricant in the trans 75

the torque formatter, the rotation of the driven shaft 1 is transmitted with the fixed carrier 11 through the central roller 9, the spacer rollers 14 and the satellites 12 to the central wheel 15, and from it the carrier 6. Associated with the driving shaft 1, the rollers 2 and 3 rotate the conical satellites 7 and 8 , which, making rotation together with the planet carrier 6 and relative to their axes, cause the outer drum 4 and the output shaft 5 to rotate. The spacer rollers 14, having diameters determined by the formula given in the description, provide the necessary preload force proportional to This is due to the fact that a neutral roller 9 with an elastic plate rim reduces slippage and wear. 9 il.

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sixteen

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The invention relates to mechanical engineering and can be used as a torque transformer in the drives of various machines and mechanisms.

The purpose of the invention is to increase durability by improving the smoothness of work and reducing wear in the absence of lubricant.

FIG. 1 shows a kinematic diagram of a torque transformer; in fig. 2 is a view A of FIG. one; in fig. 3 - the central roller of the transmission mechanism; in fig. 4 - the same, side view; in fig. 5 - node of the drive shaft of the variator with rollers in the reversing embodiment of the transformer; in fig. 6 is a section BB in FIG. five; in fig. 7 is a node with a roller on a drive shaft having screw splines in the non-reversible embodiment; in fig. 8 - the same, side view; in fig. 9 is a sectional view BB in FIG. eight.

The torque transformer contains a friction multithreaded conical variator, which includes a drive shaft 1 with rollers 2 and 3, an outer drum 4, an output shaft 5 connected to it and a carrier 6 with conical satellites 7 and 8 that interact with corresponding rollers and outer drum 4 and a friction planetary gearing with rotation of the drive and output shafts in one direction, including central roller fixed to the drive shaft 1 with an elastoplastic rim consisting of a set of oblique lamellar teeth 10 of equal bending resistance in a tangential direction, a carrier 11 mounted thereon pinion 12 and uprugopodzhatymi thereto by means of springs 13, spacer rollers 14 cooperating with the central roller 9 and the pinion 12 and the center wheel 15 with internal engagement with pinions 12 coupled to the carrier 6 of the variator. The diameter of the spacer rollers 14 is determined by the formula

_{l =} - ^b ^ - ^, (1) ca.

where a = b / _l (1 H-soz) —ί / ι (1 — soz) H-2 / so5a;

B = ΰ? 2 (1 + εο5α) -) - 2 (α! | Ύ! 2 + / ύί2 + ί / ί + 2 / ί / ι) χ X (1 — owl) —2 /;

with ~ ώιί / 2 (1 —С05аХ (/ | -) - £ / 2 -) - 2 /) - 2 / с1 ₂ Х Х№- /),

ά \ —diameter of the central roller 9; c? 2 — diameter of satellite 12;

I - the gap between the central roller 9

and satellite 12;

and - the central angle between the satellite 12 and the expansion roller 14 with the top in the center of the transformer.

The outer drum 4 consists of two parts, tightened by the adjusting screws 16, for regulating the preliminary pressing of the friction contacting surfaces of the links of the variator.

In the reversible embodiment of the transformer, the drive shaft 1 (see Figs. 5 and 6) is a pipe with longitudinal slots for moving the jumpers 17 made on the rollers 2 and 3. The jumpers 17 rest on the cut walls of the drive shaft 1 through balls 18. Inside the drive shaft Shaft 1 is equipped with a control screw 19, having right and left running threads. Accordingly, the rollers 2 and 3 on the jumpers 17 have sleeves 20 with right and left threads. Each of the rollers 2 and 3 has a rim consisting of oblique plate spacing teeth 21 with angle β of inclination to the axis of the roller and angle γ of inclination to the radius of the roller (see Fig. 7 and 8). To control the screw 19 can be used servo 22, placed in the box 23 connected to the drive shaft 1.

In the non-reversible embodiment of the transformer torque, but with an increased range of rotational speed control, the drive shaft 1 can be made with screw slots 24, on which the rollers 2 and 3 can be moved with the help of balls 25, which can be unclamped by the spacer spring 26.

Satellites 12 can be made multi-finger, for example, have additional rims 27 interacting with the central wheel 15. Additional pressing of the rims 27 to the latter can be done by installing the axes of the satellites in the obtuse-angled notches 28 of the carrier 11 with the angle φ (see Fig. 2) determined by the formula

ί7 ₂ + £ / ₃ 5ΪπΘ

where ψ is the coefficient of adhesion; ά <ί — diameter of the satellite 12; s / s is the diameter of the crown 27;

Θ is the angle with the apex in the center of the satellite 12 between the beams directed to the centers of the central ice rink 9 and the distance roller 14.

The torque transformer operates as follows.

The rotation of the drive shaft 1 is transmitted while the carrier 11 is stationary through the central roller 9, the spacer rollers 14 and the satellites 12 to the central wheel 15. From the latter, the carrier 6 rotates, and the rollers 2 and 3 connected to the drive shaft 1 rotate the cone satellites 7 and 8. The latter, rotating together with the planet carrier 6 and relative to their axes, rotate the outer drum 4 and the associated output shaft 5. The spacer rollers 14, having diameters calculated by the formula (1), provide the necessary pressing force in contacts with the center 9 and satellite 12, proportional to the transmitted torque, which helps to reduce

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wear these links. Transmission of rotation by friction pairs increases the smoothness of the transformer, and the execution of the central roller 9 with an elastic plate rim compensates for slippage in the frictional contacts by elastic bending of the teeth, which also reduces wear and increases the durability of the transformer under conditions of limited lubrication. Possibilities of operation of the friction multithreaded variator in the reverse mode when installed in the drive shaft 1 of the screw 19 connected to the servo drive 22 (see Fig. 5 and 6) or with an increased control range when there are screw slots 24 on the drive shaft 1 and the spacer spring 26 ( See Fig. 7-9) allows you to expand the scope of the transformer.

Claims (1)

Claim A torque transformer containing kinematically interconnected gears and a friction variator, including a drive shaft with rollers, an outer drum, an output shaft connected to the latter, and a carrier 25 with conical satellites for interacting with the rollers and an outer drum, characterized in that enhance durability by increasing smoothness in operation and reducing wear in the absence of lubrication, the transmission mechanism is designed as a friction planetary gear with rotation of the drive and output shafts in one direction, including a central roller fixed to the drive shaft of the friction variator with an elasto-plate rim, fitted with satellites and rollers spaced to them to interact with the central roller and the satellites and the central internal gear wheel connected to the carrier friction variator, and the diameter ά of the spacer rollers is determined by the formula , .b + d / ά ² —4ac a = - = - 5-, where a = r / ₂ (1 + soz) —ο? ι (1 — so5a) + 2 / soz; B ^ r (1 -] - so50c) - (- 2 (h1 ^ 2 ^- b / <^ 2 ^- ) ^_ ^ hf ^- 2 / c1 |) x X (1 —soz) —2Ζ; c = £ M ₂ (1 — sosaHgL + ^ 2 + 2 /) - 2 / ^ - /), where / ι is the diameter of the central roller; ά ₂ - the diameter of the satellite, I - the gap between the central roller and satellite; and - the central angle between the satellite and the expansion roller. Type A 1486671 ten fig.Z fig a 1486671 fig-7 1486671