SU962698A2

SU962698A2 - Pulse-type variable speed drive

Info

Publication number: SU962698A2
Application number: SU813266626A
Authority: SU
Inventors: Борис Абрамович Лабковский
Original assignee: Ижевский сельскохозяйственный институт
Priority date: 1981-01-29
Filing date: 1981-01-29
Publication date: 1982-09-30

Description

1one

Изобретение относитс к машиностроению , в частности к устройствам дл обеспечени плавного регулировани скорости исполнительного органа машины.The invention relates to mechanical engineering, in particular, to devices for ensuring smooth control of the speed of an executive body of a machine.

По основному авт. св. № 682706 известен импульсивньгй вариатор скорости , содержаний ведущий вал с коноидами , ведомый вал с размещенными на нем механизмами свободного, хода , и толкатели, св занные с механизмами свободного хода и взаимодействующие с коноидами, выполненными в виде соединенных в осевом направлении плавными переходными участками кулачков, каждый из которых спрофилирован таким образом, что в фазе подъема толкател обеспечиваетс посто нное на этом кулачке передаточное отношение U посредством выбора радиуса вектора Гу, профил кулачкг по зависимостиAccording to the main author. St. No. 682706 is known for an impulsive speed variator, contents of a drive shaft with conoids, a driven shaft with free-running mechanisms placed on it, and tappets associated with free-wheeling mechanisms and interacting with conoids made in the form of axially connected cam sections, each of which is shaped in such a way that, in the phase of lifting the pusher, the gear ratio U is constant on this cam by choosing the radius of the vector Gu, the cam profile in accordance with dence

v --v-jj Lcos(,i/;xv --v-jj Lcos (, i /; x

X Vve(bo-vVH j)t )- ,X Vve (bo-vVH j) t) -,

где Гд - радиус начальной шайбы кулачка;where Gd - the radius of the initial cam washer;

L - рассто ние от оси вращени кулачка до оси вращени толкател .;L is the distance from the axis of rotation of the cam to the axis of rotation of the pusher;

pp arceiH if;pp arceiH if;

- угол подъема профил кулачка 1 . - the elevation angle of the cam profile 1.

Недостатком вариатора вл етс ограниченный диапазон регулировани скорости выходного звена.The disadvantage of the variator is the limited range of speed control of the output link.

Цель изобретени - расширение диапазона регулировани скорости вариатора .The purpose of the invention is to expand the range of variable speed control.

Claims

The goal is achieved by the fact that the variator is equipped with at least two additional shafts with pushers rigidly attached to them, in contact with the drive shaft conoid and additional conoids made identical to the drive shaft conoid and in contact with the pushers associated with free-running mechanisms. The drawing schematically shows an impulsive speed variator. The impulsive speed variator contains a drive shaft 1 with conoids 2 placed on it (one is shown), a driven shaft (not shown) with free-wheeling mechanisms 3 and k placed on it, pushers 5 and 6 connected with free-wheeling mechanisms and interaction with conoids 2, as well as two additional shafts 7 and 8 with rigidly mounted pushers on them, respectively, 9 and 10, which are in contact with conoid 2 of drive shaft 1, and additional conoids 11 and 12, which are in contact with pushers 5 and 6, associated with mechanisms free running 3 and 4 respectively about. Conoid 2, as well as additional conoids 11 and 12 are made in the form of a smooth transitional section in the axial direction (s and cams, each of which is shaped at the angle of the elevation H according to the known dependence. The phase angle of the cams of the leading conoid 2 corresponding to pusher, more iSo is received. Pushers 5 and 6 are spring-loaded with elastic elements 13, and pushers 9 and 10 are elements 14. Pulse variator works as follows. When rotating drive shaft 1, pushers 9 and 10 will interact with surfaces of driving conoid 2, shafts 7 and 8 are rotated relative to each other, with some constant gear ratio U, depending on the position of the conoid 2 on the drive shaft 1. When the shafts 7 and 8 turn, additional conoids 11 and -12 turn 9 4 pushers 5 and 6 with a rotational speed determined by a constant gear ratio U. Pushers 5 and 6 through free-running mechanisms 3 and alternately transmit the rotation to the variator driven shaft, the rotation frequency of which is determined by the dependency, where w is the rotation frequency of the driven frequency Neither the drive shaft 1. Moving the conoid 1 by ugg, change and, and moving conoids 11 and 12 simultaneously to step, change Uy-. Different combinations of U and U correspond to different rotational speeds of the driven shaft, thus increasing the speed control range. The agapulsive speed variator, due to the extended range of speed regulation, can be used in drives of various technological and transport machines. The invention of the impulsive speed variator aut. St. No. 682706, distinguished by the fact that, in order to expand the range of speed regulation, it is equipped with at least two additional shafts with push rods rigidly attached to them, in contact with the drive shaft conoid, and with additional conoids made identical to the drive shaft conoid and in contact with pusher associated with the freewheel mechanisms. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 682706, cl. F 16 H 29/02, 1979 (prototype),