SU1703876A1 - Joint - Google Patents

Abstract

The invention relates to mechanical engineering and m. used to connect shafts at an angle to each other. The purpose of the invention is to increase the load capacity and the expansion of the scope. The hinge contains two forks with end lugs 8. The central ball s is 20 hch. ® 25 22 2V / 2 3, intermediate elements 4 in the form of taper rollers, composite holder 5. as well as elastic cuffs. The projections of the 8 forks are made with external spherical surfaces 9, with lateral conical surfaces and with internal toroidal surfaces. The ball 3 is made with two meridian grooves formed by the toroidal surfaces 16. And connected to the holder 5 by means of the elements 4. The torque is transmitted synchronously in opposite directions due to the interaction of the surfaces 12. 18, the forks and the elements 4, respectively. due to the interaction of the inner toroidal surface of the forks and the toroidal surface 16 of the ball 3. 3 Cp f-ly, 4 ill. YO CJ 00 V4 ON

Description

The invention relates to mechanical engineering, in particular for transmitting torque and axial forces between shafts placed at an angle to each other.

The purpose of the isobretenie is to increase the load capacity and expand the scope.

Figure 1 shows the hinge, side view; figure 2 - section aa in figure 1; on fig.Z - central ball, general view; figure 4 - view B in figure 1.

The hinge contains two forks 1 and 2 located between them a central ball 3 and intermediate elements 4 in the form of tapered rollers, as well as a holder 5 and elastic cuffs b, covering said forks.

Each of the forks 1, 2 is made in the form of a trunnion 7 with end protrusions 8, formed by the outer spherical surface 9, the inner convex

toroidal surfaces 10, end surface 11, lateral conical surfaces 12 and the inner cylindrical surface 13 in the form of a ska.

The central ball 3 is made with a spherical outer surface 14, with two meridional grooves 15 arranged in mutually perpendicular planes 15 with internal concave toroidal surfaces 16 (Fig. 2,3). and also with two pairs of diametrically opposite cylindrical holes 17 located in the equatorial plane (FIGS. 2, 3) whose axes are at right angles to each other and symmetrically with respect to the axes of the grooves 15.

The intermediate element 4 is made in the form of a roller with a lateral conical surface 18 (FIG. 2), with a convex spherical surface 19 adjacent to the large base of the conical surface, as well as with axial outer and inner cylindrical pins 20, 21.

The collar 5 is a composite of two half-strips 22 (Fig. 2), each of which is made with a vnutrennoi spherical surface 23, with two cylindrical holes 24 located at the equatorial plane and at right angles to each other (Fig. 2), as well as U-shaped groove 25 (Fig.2, 4) on the one side of the longitudinal line at the connector and with the U-shaped protrusion 26 (Fig.2, 4) on the other side. The groove 25 and the protrusion 26 form a lock, fixed by means of a pin 27, the axis of which is located paraplelno longitudinal axis

xx hinge.

Spherical surfaces 9. 23 are made of the same radius. The radius g of the profile of the surface 16 is determined from the expression r - Ro sin a, where RO is the radius of the outer spherical surface 14; a - the angle of inclination of the lateral conical surface 12 to

Z-Z plane of symmetry.

The top of the conical surfaces 12, 18 is located in the center 0 of the hinge. The total angle of the profiles of the protrusion 8 of the fork 1. 2 and roller 4 is equal to 90 °, i.e. 2 a +

2/3 90 °, where / 3 - the angle of inclination of the surface 16 to the axis of the roller.

The hinge is assembled as follows.

The forks 1, 2 are inserted by the protrusions 8 into the grooves 15 of the ball 3. The rollers 4 are inserted with the pins 21 into the holes of the ball 3, then put on half-holes 22 by inserting the pins of the rollers 4 into the holes 24. After which the half-rings 22 are fixed relative to each other by means of pins 27, the protrusions 26 are located in the slots 25. Then the holder 5 is connected with the corresponding trunnion 7 of both forks, after having previously lubricated the interacting surfaces.

Torque transfer is carried out both by the interaction of the side surfaces 18 of the rollers 4 with the side surfaces of 12 forks 1. 2 and by the interaction of the toroidal surfaces 10 of the forks 1.2 with the toroidal surfaces 16 of the ball 3.

The transfer of tensile axial forces is accomplished by the interaction of the spherical surfaces of 9 forks 1, 2 with

spherical surfaces 23 by half-waves 22. The transmission of compressive forces is carried out by the interaction of said surfaces, as well as surfaces 10. 16.

The angular displacements of the connected shafts are compensated for by the rotary movements of the block made up of the central ball 3, the rollers 4 and the holder 5. This block is set in the meridional plane during rotation of the forks.

The implementation of the hinge with additional rollers placed between each of the pairs of side adjacent surfaces of the forks, a movable connection of each of

rollers with a central ball and a holder, by placing its trunnions in cylindrical apertures, provides the possibility of transmitting torque in opposite directions while maintaining transmission synchronism, which results in expansion of the field of application.

The implementation of the central sphere with two meridian located in mutually perpendicular planes

grooves with concave toroidal surfaces, the inner surfaces of the forks are toroidal, i.e. contact surfaces and the contact of these surfaces ensures the transfer of torque not only due to the interaction of the side surfaces of the forks with the side surfaces of the rollers, but also due to the interaction of the internal surfaces of the forks with the grooves of the central ball increase load capacity.

1. A hinge containing two forks connected to each other by a central ball and a pair of intermediate elements in the form of tapered rollers, as well as by means of a yoke covering them, each fork having end lugs limited by an outer a spherical surface, an inner surface and lateral conical surfaces, the central ball is made with an outer spherical surface and with one pair of diametrically opposite cylindrical holes located in the equatorial plane, each roller is made with a lateral conical surface, the top of the cone of which is placed in the center of the hinge, as well as with a convex spherical surface on the side of the larger base of the conical surface and two axial outer and inner cylindrical trunnions in the equatorial plane of the yoke on the inner surface side a pair of diametrically opposite holes, each with a roller matched by its conical surface with the lateral conical surfaces of the protrusions of the forks, the outer roller pin once eschena a ferrule hole, and the inner pin - in the central opening of the ball, wherein. that in order to increase the load capacity and expand the field of application by transmitting torque in the opposite direction while maintaining transmission synchronism, it is equipped with two additional intermediate elements in the form of tapered rollers, with

This central ball is made with an additional pair of diametrically arranged holes, the axis of which is located perpendicular to the axis of the pair of holes, as well as with two meridional grooves with concave toroidal surfaces arranged in two mutually perpendicular planes and symmetrically with respect to the hole axes the protrusions of the forks are made with toroidal, mating toroidal surfaces of the central ball, the yoke is made with another pair located in the equatorial area bone diametrically opposite cylindrical holes whose axis is perpendicular to the axis of said holes, also formed cylindrical, wherein the inner surface of the holder is spherical and toroidal surfaces of forks disposed protuberances in contact with the mating surfaces of the central sphere.

2. The hinge according to claim 1. that the radius r of the groove profile of the central ball is determined by the ratio

r-ro.slna,

where Ro is the radius of the outer spherical surface of the central ball;

a is the angle of inclination of the lateral conical surface of the protrusion of the fork to the plane of symmetry.

3. A hinge according to claim 1, characterized in that the sleeve is made up of two half-pins with a longitudinal plane of the plug, each of the half-pins made with a U-shaped groove on one side of the line of the plug and t with a U-shaped protrusion on the other side , while each protrusion of one half-arm is located in the corresponding groove of the other half-arm and is fixed by a pin, whose axis is parallel to the longitudinal axis of the hinge.

4. A hinge according to claim 1, characterized in that the total angle of the projection profiles of the fork and roller is determined by the ratio

2a + 2Ј-90,

where ft is the angle of inclination of the tapered surface of the roller to its axis.

 HHE 5

  -

9

Fig1

Fig.Z

View b

Fagch

Claims (4)

Claim 1. A hinge containing two forks connected to each other by a central ball and a pair of intermediate elements in the form of conical rollers, and also by means of a cage enclosing them, each fork having end protrusions bounded by an outer spherical surface. inner surface and lateral conical surfaces, the central ball is made with an outer spherical surface and with one pair of diametrically opposite cylindrical holes located in the equatorial plane, each roller is made with a lateral conical surface. the top of the cone which is located in the center of the hinge, as well as with a convex spherical surface from the side of the larger base of the conical surface and two axial outer and inner cylindrical pins, a pair of diametrically opposite holes are made in the equatorial plane of the cage from the side of the inner surface, each roller being mated with its conical surface with lateral conical surfaces of the protrusions of the forks, the outer pin of the roller is placed in the hole of the clip, and the inner pin in the hole of the cent ball, characterized in that, in order to increase the load capacity and expand the scope by transmitting torque in the opposite direction while maintaining synchronization of transmission, it is equipped with two additional intermediate elements in the form of tapered rollers, while the central ball is made with an additional pair of diametrically located holes, the axis of which is perpendicular to the axis of the aforementioned pair of holes. and also with two meridional grooves located in two mutually perpendicular planes and symmetrically relative to the axis of the holes with concave toroidal surfaces, the inner surfaces of the protrusions of the forks are made toroidal, mating with the toroidal surfaces of the central ball, the holder is made with another pair of diametrically opposite cylindrical holes located in the equatorial plane, whose axis is perpendicular to the axis of said openings. also made cylindrical, with the inner surface of the cage made spherical, and the toroidal surfaces of the protrusions of the forks are in contact with the counter surfaces of the central ball. 2. The hinge according to claim 1. that the radius r of the groove profile of the central ball is determined by the relation r —Ro.slncz, where Ro is the radius of the outer spherical surface of the central ball; and - the angle of inclination of the lateral conical surface of the protrusion of the fork to the plane of symmetry. 3. The hinge according to claim 1, with the fact that the clip is made of a composite of two half-holes with a longitudinal plane of the connector, each of the half-holes made with a U-shaped groove on one side of the connector line and t with a U-shaped protrusion on the other hand, wherein each protrusion of one half-hole is located in the corresponding groove of the other half-hole and is fixed with a pin, the axis of which is parallel to the longitudinal axis of the hinge. 4. The hinge according to claim 1, characterized in that the total angle of the profiles of the protrusion of the fork and roller is determined by the ratio 2a + 2 ^ -90®, where β is the angle of inclination of the conical surface of the roller to its axis.