SU898184A1

SU898184A1 - Friction variable speed drive

Info

Publication number: SU898184A1
Application number: SU802933624A
Authority: SU
Inventors: Сергей Валентинович Савин; Андрей Олегович Дегтярь
Original assignee: Пензенский Политехнический Институт
Priority date: 1980-05-08
Filing date: 1980-05-08
Publication date: 1982-01-15

Description

(54) ФРИКЦИ01ШиЙ ВАРИАТОР СКОРОСТИ(54) FRICTION VERSION VARIATOR OF SPEED

Изобретение относитс к машиностроению , в частности к бесступенчатым фрикционным передачам.The invention relates to mechanical engineering, in particular to continuously variable friction gears.

Известен фрикционный вариатор скорости , содержащий ведущий конус с наружной рабочей поверхностью, ведомый конус с внутренней рабочей поверхностью , промежуточный цилиндрический ролик и механизм перемещени ролика 1.A frictional speed variator is known, comprising a leading cone with an outer working surface, a driven cone with an inner working surface, an intermediate cylindrical roller and a mechanism for moving the roller 1.

Недостатком известного устройства вл етс узкий диапазон регулировани , так как образуюище ведущего и ведомого конусов параллельны и при перемещении промежуточного ролика вдоль них происходит увеличение диаметров как ведущего, так и ведомого элементов. Кроме этого, увеличение , диапазона регулировани наблюдаетс при увеличении углов при вершинах конусов от 0° до 90. Дальнейшее же увеличение углов приводит к уменьшению диапазона регулировани .A disadvantage of the known device is a narrow adjustment range, since the formation of the driving and driven cones are parallel and as the intermediate roller moves along them, the diameters of both the driving and driven elements increase. In addition, an increase in the adjustment range is observed when the angles increase at the tips of the cones from 0 ° to 90. But a further increase in the angles leads to a decrease in the adjustment range.

Цель изобретени - расширение диапазона регулировани .The purpose of the invention is to expand the range of regulation.

Дл достижени цели вариатор снабжен коническим роликом, набранным из дисков, свободно установленных на оси и контактирующих с ведущим кону|сом и цилиндрическим роликом.To achieve the goal, the variator is equipped with a conical roller, assembled from disks, freely mounted on the axis and in contact with the driving cone and a cylindrical roller.

На чертеже представлена кинематическа схема фрикционного вариатора.The drawing shows a kinematic diagram of a friction variator.

Фрикционный вариатор скорости содержит ведущий конус 1 с наружной рабочей поверхностью, конический ролик 2, набранный из отдельных дисков, имеющих коническую поверхность по периферии , промежуточный цилиндрический ролик 3, ведомый конус 4 с внут10 ренней рабочей поверхностью и винтовой механизм (не показан) перемещени цилиндрического ролика 3.The friction speed variator contains a leading cone 1 with an outer working surface, a conical roller 2 assembled from individual disks having a conical surface along the periphery, an intermediate cylindrical roller 3, a driven cone 4 with an internal working surface and a screw mechanism (not shown) for moving the cylindrical roller 3

Фрикционный вариатор скорости работает следующим образом.Friction speed variator works as follows.

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Claims

The drive cone 1 causes all disks of the tapered roller 2 to rotate, which rotate at different angular speeds. The cylindrical roller 3, moving along the generatrix of the tapered roller 2, comes into contact with a part of the discs and transmits the rotation to the driven cone 4. The variable control range of the variator can be changed not only by changing the lengths of the leading and the driven cones, but also by changing the angles at the vertex of the cones of each individually or both at the same time in the direction of decreasing or increasing. In the proposed variator, it is possible to realize the principle of multithreading of power transmission from the drive shaft to the driven one without increasing the dimensions of the variator, but only by introducing several conical and cylindrical rollers located around the lead | Tsego cone. In this case, it is possible to unload the shafts and their supports from radial loads. The introduction of an additional taper roller into the frictional speed variator allows the control range to be significantly expanded. Claims of the invention A friction speed variator comprising a driving cone with an outer working surface, driven by an internal working surface, an intermediate cylindrical roller and a roller moving mechanism, characterized in that it is equipped with a tapered roller made of discs in order to expand the adjustment range. installed on the axis and in contact with the drive cone and cylindrical roller. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 306301, cl. R 16 H 15 / 28,1971 (prototype).