SU579482A1

SU579482A1 - Automatic toroidal variable-speed gear

Info

Publication number: SU579482A1
Application number: SU7402020836A
Authority: SU
Inventors: Леонид Александрович Данилов; Борис Иосифович Рабинков; Борис Сергеевич Собченко
Original assignee: Липецкий Ордена Ленина Тракторный Завод Им.Ххш Съезда Кпсс
Priority date: 1974-05-05
Filing date: 1974-05-05
Publication date: 1977-11-05

Description

1one

Изобретение относитс к машиностроению а именно к автоматическим торовым вариаторам о соосными чашками и промежуточными фрикционными роликами и может най ти применение в транспортных машинах.The invention relates to mechanical engineering, namely, automatic torus variators on coaxial cups and intermediate friction rollers and can be used in transport vehicles.

Известны автоматические торовые вариаторы , содержащие соосно расположенные чашки, поворотно установленные (один или несколько) промежуточные фрикционные ролики , оси которых расположены в одной плоскости с осью чашек с возможностью сдвига по нормали или поворота относительно этой плоскости, кулачковые механиэмы (по числу роликов), каждый из которых кинематически св зан с осью ролика, и упругие элементы lj .Known automatic torus variators containing coaxially arranged cups, rotatably mounted (one or several) intermediate friction rollers, the axes of which are located in the same plane with the axis of the cups with the possibility of a shift along the normal or rotation relative to this plane, cam mechanics (by the number of rollers), each of which kinematically associated with the axis of the roller, and the elastic elements lj.

Недостатком таких вариаторов вл етс невозможность изменени крут щего MOMeiJта по заданному законуThe disadvantage of such variators is the impossibility of changing the torque MOMeiJta according to a given law.

Наиболее близким но технической сушгности к изобретению вл етс выполненный идентично аналогу автоматический торовый вариатор с промежуточными роликами, у которого автоматическое Mv MOHeHne передаточного riTHDineHHH нроиуводитс кулачковым механизмом, получающим перемещение от траверсы, котора поворачиваетс вместе с осью главного вращени ролика при иэменении передаточного отношени вариатора С21,The closest to the technical dryness of the invention is an identical automatic analogue torus variator with intermediate rollers, in which the automatic Mv MOHeHne transmission riTHDineHHH gear is driven by a cam mechanism, which receives movement from the cross bar, which rotates with the axis of the main rotation of the roller when changing the gear ratio from the cross section of the roller during rotation.

Однако использование таких автоматичес ких торовых вариаторов в указанной области техники не представл етс возможным, так как автоматически может поддерживатьс посто нной только величина момента, характ на дл данного режима работы.However, the use of such automatic torus variators in this technical field is not possible, since only the magnitude of the moment, characteristic of this mode of operation, can be automatically maintained constant.

Целью изобретени вл етс обеспечение заданного закона изменени крут щего момента .The aim of the invention is to provide a predetermined law of variation in torque.

Эта цель достигаетс тем, что вариатор снабжен устройством, задающим величину деформации упругих элементов, двуплечими рычагами, каждый из которых кинематически св зан с одним из упругих элементов и осью фрикционного ролика, и опорами дл каждого рычага, св занными с кулачковыми механизмами.This goal is achieved by the fact that the variator is equipped with a device that specifies the amount of deformation of the elastic elements, double-arm levers, each of which is kinematically connected with one of the elastic elements and the axis of the friction roller, and supports for each lever connected with cam mechanisms.

Claims

FIG. 1 shows a diagram of the variator with the translational movement of the support double-arm lever. FIG. 2 - the same, with vrascalny movement of the support. The automatic torus variator contains two sorts of spaced 1, intermediate friction rollers 2, whose axes 3 of the main rotation have two degrees of freedom in mutually perpendicular directions. Axis 3 is kinematically connected by means of a two-arm lever 4 to one end of an elastic element 5, the other end of which is kinematically connected to a device Bom 6, which specifies the amount of deformation of the elastic element. The double-shouldered lever 4 is provided with a support 7, which is kinematically associated with the cam mechanism 8. The hinge 9 connects the yoke 10 mounted in the Hi supports with the axis 3. The support 7 of the double-arm lever 4 has a slider 12 with a joint 13, which is installed with lateral movement 14 and is coupled to the cam mechanism 8. Axis 3 forms a hinge with the transverse axis 15 of the double-hinged link 16. Longitudinal axis 17 is rotatably mounted around its own axis, and support 7 is installed in the guide 18 also rotatably around its axis. Works torus variator as follows. When operating under load, each roller 2 in the contact points with the bolts 1 has tangential forces proportional to the torques on the plates 1. Equivalent tangential forces are applied to the axis 3 of roller 2 and through the lever 4 it is applied to the elastic element 5. The deformation force given by device 6 the elastic element 5 balances the equilibrium tangential forces. As the load on the variator increases, the tangential forces on axis 3 increase, due to which the latter is displaced from the initial position. In this case, the lever 4, turning in the joint 13 and moving relative to the slide 12, will rotate or shift relative to the initial position bounded by the line A-A. Detachment m: n 3 from the nominal 10) and will result in self-translation of the rollers 2, which will be done in the direction of increasing the gear ratio until the reduction of the effect of tangential forces on the axis 3 will not restore the balance, and the lever 4 will not return to the nominal position under the action of the elastic element 5 at the new gear ratio of the variator. When increasing the gear ratio, the axis 3 rotates in a plane common to the plane of the cups 1, and the cam mechanism 8 changes the position of the support 7. In this displacement of the slide 12, the ratio of the levers of the lever 4 or the rotation of the support surface of the slide 12 on the support 7 relative to the lever 4 will change an elastic element 5 on an axis 3. Formula of the invention. An automatic torus variator containing coaxially arranged cups, HI gate-mounted (one or more, intermediate friction rollers, the axes of which are located in one a plane with the axis of the cups with the possibility of a shift along the normal or rotation relative to this plane, hook mechanisms (according to the number of rollers), each of which is kinematically connected with the axis of the roller, and elastic elements, characterized in that in order to ensure a given law of change moment, the variator is equipped with a device that specifies the value of d & a formation of elastic elements, two-arm levers, each of which is kinematically connected with one of the elastic elements and the axis of the friction roller, and supports for each lever connected E with cam mechanisms. Sources of information taken into account in the examination: 1. US Patent No. 285091О, cl. 74-190.5 1965.

2. Author's certificate No. 177249, KL.2 16 N 15/38, 1963.