SU727922A1 - Ball-type variable-speed mechanism - Google Patents

Description

one

The invention relates to the field of mechanical engineering and can / be used in various sectors of the national economy for transmitting perturbative movement at a smoothly controlled speed.

A ball variator is known, comprising a housing, a drive and driven shaft mounted therein and bearing gears, a regulating device, balls, two inner rings interacting with them, connected to the drive shaft, and two outer rings, one of which is connected with the driven shaft and the other with a control device l.

The disadvantage of this variator is that the load capacity is too low and the axial forces are heavily loaded with the variator bearings.

The closest to the technical essence of the invention is a ball variator, comprising a housing, a drive shaft, a driven link, balls, and two external

rings, one of which is rotatable, and the other is stationary, and mounted on the drive shaft with the possibility of axial movement of two internal collars, an elastic element and a regulating device. In 2.

In this variator, the rotating outer ring is connected with the driven link, and the fixed outer ring is connected with the regulating device, made in the form of a lever mechanism.

The disadvantage of this variator is also low load capacity and significant load bearing bearings axial forces.

The purpose of the invention is to increase the load capacity and unload the subtype of the supports of the variator from axial forces.

For this purpose, the controller is provided with additional balls, interacting with them with two additional outer and & additional internal rings, identical to the main and

Claims (2)

symmetrical to them with respect to the transverse plane of the drive shaft, cMeiKHue based on it and additional outer rings are integrally formed and connected to the driven link, nevraschayuschiesya outer rings are connected to the body by means of elastic elements, and the adjusting device is made hydraulically and adjacent to each other. the main and additional internal rings. The regulating device is connected with non-rotating outer rings, and the adjacent main and secondary inner colls are loaded with an elastic element and between them. FIG. 1 schematically depicts a globular variator, longitudinal section; in fig. 2 - variator (option to perform). The ball variator comprises a housing 1, a drive shaft 4, mounted on bearings 2.3 and 2.3, a driven shaft 5, a driven link 5, balls 6 interacting with two outer rings 7, 8 and mounted on the drive shaft 4 with the possibility of axially replacing two inner rings 9, 10, elastic elements 11, 12, a regulating device 13, additional balls 14, two additional outer rings 15, 16 interacting with them and installed with axial displacement of axial movement on the drive shaft 4 two additional internal rings 17, 18. Balls 6 and 14 and the same name The rings are made of one m and are located symmetrically with respect to the transverse axis of the drive shaft. Adjacent outer rings 80–15 are made in one piece and are connected with the wind 4 by link 5, for example, by means of gear teeth. Neuroshakhtsiyes outer rings 7 and 16 are connected to housing 1 by means of elastic elements 11 and G2. The regulating device is made hydraulically with a PS 19 screw rigidly connected to a driving shaft 4 mounted in a hydraulic cylinder formed by the inner surfaces of adjacent inner rings 9 and 17, the cavities of which are connected to the pressure head with ShtSH & Goyot: eu1Sht KtSh1tsk: oil supply from the pump. The axial fixation of the inner rings 9 and 18 on the drive shaft 4 is carried out by nuts 20 and 21 that are in contact with the rings on spherical surfaces. The hydraulic cylinders 22 and 23 of the regulating device (cM, Fig. 2) are located in 2 housing 1, and inserted into them pistons 24 and 25 interact with non-harsh outer rings 7 and 16. Adjacent main 10 and additional 17 internal rings are loaded with elastic elements 11 and 12 installed between them. The ball variator operates as follows. When the drive shaft rotates, the inner rings 9, 1О and additional BiiyTpeHtrae rings 17 and 18 rotate with it, and their rotation through the balls 6 and 14 is transmitted to the combined outer rings 8 and 15 and the associated link 5 with them. the frictional contact of the balls with the corresponding rings is created by elastic elements 11 and 12 and the oil pressure in hydraulic cylinders. The speed regulation is prevented by changing the oil pressure in the hydraulic units, leading to axial movement of the corresponding rings and radial movement of the balls 6 and 14, which changes the replenishment of the points of contact of the balls with the rings and, accordingly, the gear ratio of the variator.,. This embodiment of the variator allows to increase its load capacity by increasing the number of rows of balls and rings and unloading the variator bearing supports from axial forces, providing a symmetric arrangement of frictional contact points from both rows of balls of rings and mutual balancing of the axial forces arising in these places . Claim 1. Ball variator, comprising a case, disengaged in it on the psadpingovykh operas a driving shaft, a driven Eveno, schA.riki, two external, one of which is rotating, and the other is stationary, and fired on the driving shaft with a torque. Two inner rings, elastic elements and a regulating device, characterized in that, in order to increase the load capacity of the variator, it is equipped with additional balls that interact with them two additional external and two additional internal coaxes, ideitically basic and symmetrical to them relative to the transverse plane of the drive shaft, adjacent main and additional outer rings are made in one piece and connected to the driven link, the outer rings do not rotate to the body by means of elastic elements The device is a hydraulic piston type and is associated with adjacent main and additional inner rings. 2. A variator pop, 1, characterized in that the regulating device is connected with non-rotating outer rings, and the laughter of the main and additional inner rings are loaded with elements fixed between them. Sources of information taken into account in the examination 1. Kozhevnyks z S. N ,, Esipenko Ya. I., Raskin L. M, Mechanisms, M., Mashinostroenie, 1976, p. 341, FIG. 5.3O. 2.UK patent number 1401077, class, F 2 O 15 / O4, 1975 (prototyp fc X :: i Macw im pump, 7 Oil on pump