SU1451370A2 - Universal joint - Google Patents

Abstract

The invention relates to the field of engineering, in particular to universal joints with rolling elements, and is an improvement of the invention in a. with. No. 1408126. The purpose of the invention is to increase the load capacity of the hinge. As one of the forks rotates, torque is transmitted to the other fork via balls. The balls interact with the adjacent flat surfaces of the forks, with the inner spherical surface of the half-beaker and the outer spherical surface of the central ball. The central ball is made with mutually perpendicular grooves. In the aforementioned grooves there are protrusions of forks with convex toroidal surfaces. 2 3. p. F-ly, 5 ill.

Description

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The invention relates to mechanical engineering, in particular to universal joints with rolling elements between leading surfaces for connecting shafts whose axes are arranged at an angle to each other. .

The purpose of the invention is to increase the load capacity of the hinge.

FIG. 1 shows a hinge, a general view; in fig. 2 - section A-A in FIG. one; in fig. 3 - fork, general view; in fig. 4 is a section BB in FIG. 3; in fig. 5 - central ball, general view.

The hinge contains two identical plugs 1, installed with the possibility of interaction with each other by means of the central ball 2, covered by the housing 3, and also installed with the possibility of interaction with each other by means of intermediate elements 4, made in the form of balls.

Intermediate elements 4 are arranged to cooperate with plugs 1, central ball 2 and housing 3. Fork 1 is designed as a pin 5, connected to protrusions 6 made with external spherical surfaces 7, lateral contact surfaces as adjoining each other the toroidal surface 8 and the flat surface 9, and the inner surfaces in the form of a convex toroidal surface 10 mating with convex cylindrical surfaces 1 1.

At the top of the surface 10, 11 is made of juice in the form of a cylindrical surface 12 and flat surfaces 13.

The central ball 2 is made with two annular meridian grooves 14 in a mutually perpendicular planes of the semi-circular profile and sections of the outer spherical surface 15. The housing 3 is made as a composite cage and consists of half-strips 16, 17 with an inner spherical surface 18 and retaining rings 19, 20. The body is connected to the pins of forks with corrugated cuffs 21.

The diameter of the outer spherical surfaces 7 of the projections of the fork is made equal to the diameter of the internal spherical surface 18 by half-waves 16, 17, determined by the formula:

where TH is the diameter of the intermediate ball 4

do is the diameter of the outer spherical surface 15 of the central ball.

The axial diameter of the centers of the intermediate balls is determined by the formula

Z) o (do + di) | -.

The distance between the flat surfaces of the 9 side contact surfaces of the protrusions of the fork is determined by the formula

H DO-d, (rfo + di) -di0

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five

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five

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five

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The diameter of the central ball exceeds the diameter of the intermediate ball by an amount of 2 ... 1.3.

The circular profile of the grooves 14 of the central ball is made with a radius R. The profile of the cylindrical convex surfaces 11 and the convex toroidal surface 10 is also made with a radius R, and the shower of the transition between these surfaces is located in a plane passing through the center of the ball and perpendicular to the axle axis.

When one of the forks 1 is rotated, the torque is transmitted to the other forks via balls 4 interacting with the mixed surfaces of the 9 forks, with the inner spherical surface 18 of the half-open 16, 17 and the outer spherical surface 15 of the central ball.

The implementation of the central ball with mutually perpendicular grooves interacting with the convex toroidal surface of the protrusions of the plug provides surface contact between these parts, as well as the ability to transfer torque through the intermediate balls and through the central ball, thereby increasing the load capacity hinge as a whole.

Claims (3)

1.Universal hinge on auth. St. No. 1408126, characterized in that, in order to increase the load capacity, each of the intermediate elements is mounted to interact with the outer spherical surface of the central ball, the central ball is made with two annular meridional grooves of the semicircular profile, the axes of which are located in two mutually perpendicular planes , the inner surfaces of the forks of the fork are made with convex cylindrical surfaces mated with a convex toroidal surface, the profile of which corresponds to Corresponds to the profile of the grooves of the central ball, and each side contact surface of the protrusions of the plug is made with a concave toroidal surface that is adjacent to a flat surface. 2. A hinge according to claim 1, characterized in that the diameter of the inner Hopus of the spherical surface of the body is determined by the formula Dc 2di + do, where d is the diameter of the intermediate ball; do is the diameter of the central ball, the axial diameter of the centers of the DQ arrangement intermediate balls defined by the formula Do (do + d,) -, the distance H between the flat surfaces of the side contact surfaces of the protrusions of the fork is determined by the formula , (do + d, jf-di, nineteen sixteen 5 1 0 the diameter of the central ball exceeds the diameter of the intermediate ball by an amount of 2 ... 1.3. 3. A hinge according to claim 1, characterized in that at the apex of the inner surfaces of the protrusions of the fork are made of juice in the form of a cylindrical surface on a convex toroidal surface and flat surfaces on convex cylindrical surfaces. 20 V 2i fPae.f H { Thebes. 2 Per / ten Phie. 3 13 figm