SU646121A1 - Clutch - Google Patents

Description

This invention relates to mechanical engineering, especially transport engineering. A clutch is known, containing two coupling halves interacting through a friction disk l. The latter wears out a lot, and when it gets very hot it warps. The clutch is known, containing drive and driven coupling halves fixed on the shafts, acting between themselves through intermediate medium 2. Disadvantages of this clutch: low power consumption (high specific gravity) and small amount of transmitted torque A at low slip. The aim of the invention is to increase the power consumption of the coupling and increase the transmitted torque at low slip. The drawing shows the coupling coupling in the section. The leading half coupling I is made in the form of a cup, on the inner cylindrical surface of which the annular grooves 2 are trapezoidally cross-section. The grooves of the type are filled with viscous and mass, for example, special glue. The dimensions of the grooves depend on the properties of the mass (it should not flow out of them under the force of gravity) and are approximately equal: depth 5-10 mm, average width 1-2 mm, angle of taper 10-15. The number of grooves depends on the torque transmitted by the clutch. The mass of the filling grooves can be specially selected a variety of adhesives used in the manufacture of adhesive tapes. The most suitable are adhesives based on silicone elastomers, which have a high temperature resistance. . in the central part of the coupling half 1 there is a cylindrical protrusion 3, on which the driven coupling coupling 4, made in the form of a drum, is mounted on the slide landing. In semi-clutch 4, asymmetrically, several slide axles 5 are installed on the sliding fit, on which drums 6 are rigidly fixed (using dowels or vents with eccentricity) and carry rollers 7 on the needle bearings. IT from the torque to be transmitted).

The axles 5 end with cylindrical Hfw gears 9, which are located in an interface with the control gear 10. And, in turn, are articulated with non-high jagged sectors 11, each of which is seated on the half-axis 12 and connected with a return spiral spring 13 and a lever 14. The latter rests on the yoke 15, the bearing bearing 16, the clutch yoke 17. The free ring of the bearing is in contact with the plug 17. The driven shaft 18 is connected to the coupling half 4 by means of a joint.

All parts of the clutch, with the exception of the annular grooves and protrusions 3, are coated with a special coating that does not adhere to the viscous mass, for example a silicate coating.,

The coupling halves 1 and 4 and the rollers 7 are made of a material having a high thermal conductivity. The clutch is encased, eliminating the ingress of dust and dirt into the viscous mass.

The principle of the clutch is as follows.

In the off state (the plug is in the extreme left position) Between the coupling half 1 and the rollers there is a guaranteed air gap G equal to 1-1.5 mm. To engage the clutch, the fork 17 is released. Under the action of the springs 13, the toothed sectors 11 are rotated. This causes the steering gear to turn. The latter rotates all the drums synchronously by 180. As a result, the eccentricity C changes the sign to the opposite. But since

2nd,

where fi is the depth of the groove 2, then there is an almost complete immersion of the protrusions 8 into the grooves. The mass is squeezed out of them, fills the entire gap between the protrusions 8 and sticks them together. This deprives the rollers of mobility. Acting through the drum on the axle, the rollers carry the coupling half 4 and make it rotate synchronously with the coupling half 1,

If the protrusions 8 are partially immersed in the grooves (intermediate modes), the bonding forces may not be sufficient to fully brake.

commercials. Rotating, the latter will continuously glue and peel off from the coupling half 1. In this case, there will be an intense deformation of the mass, which, under the action of centrifugal forces, accumulates at the bottom of the grooves. When the mass is deformed, And also when the rollers are peeled off and glued to the coupling half 1, there will be an intensive transformation of mechanical energy into heat.

Separate particles of mass, torn by rotating rollers from the grooves, cannot be held on the parts of the coupling due to the presence of a special coating on their surfaces. Under the action of centrifugal forces, they again fall into the grooves.

With a sharp increase in the torque perceived by the clutch, a slight cranking also occurs.

rollers, which results in damping of torsional vibrations and smooth operation of the transmission. . .

Claims (2)

1. Coupling clutch containing driving and driven coupling halves fixed on the shafts, interacting with each other through a viscous fluid, characterized in that, in order to increase the power consumption of the clutch and increasing the transmitted torque at low slip, the leading half-coupling is made in the form of a glass with annular grooves on the inner cylindrical surface to accommodate a viscous and sticky mass, for example a special glue, and the driven coupling half is made in the form of a drum, carrying on the periphery the rollers mounted loosely on rotary eccentric axles and provided with external projections in the form of annular channels of the leading coupling half. 2. Coupling clutch according to claim 1, characterized in that it is equipped with a rack-and-pinion mechanism for turning eccentric axes. S Sources of information taken into account in the examination. 1. US patent number 3061062, cl. 192-70.18 -1962, 2. US patent number 3559786, cl. 192-58, 1971.