SU881435A1

SU881435A1 - Rachet-type variable speed drive

Info

Publication number: SU881435A1
Application number: SU792713416A
Authority: SU
Inventors: Гелий Иванович Рычков
Original assignee: За витель Г. И. Рычков
Priority date: 1979-01-17
Filing date: 1979-01-17
Publication date: 1981-11-15

Description

(54) ХРАПОВОЙ ВАРИАТОР(54) SNIP VARIATOR

II

Изобретение относитс к машиностроению и может быть использовано дл бесступенчатого регулировани чисел оборотов выходного вала.This invention relates to mechanical engineering and can be used to continuously adjust the speed of the output shaft.

Известен храповой вариатор, содержащий корпус, входной и выходной валы, св занные посредством храпового механизма, взаимодействующего с регулируемым эксцентриком (1.A ratchet variator is known, comprising a housing, an input and output shafts connected by means of a ratchet mechanism interacting with an adjustable cam (1.

Недостатком данного вариатора вл етс сложность конструкции регулировки эксцентриситета храпового механизма, наличие подвижных св зей эксцентрика с храповиком, ухудшающих динамику вариатора.The disadvantage of this variator is the complexity of the adjustment of the eccentricity of the ratchet mechanism, the presence of mobile links of the eccentric with the ratchet, which worsen the dynamics of the variator.

Наиболее близким по технической сущности к изобретению вл етс храповой вариатор , содержащий корпус, установленные в нем входной и выходной валы, кинемати- 5 чески св зывающий их храповой механизм и механизм изменени передаточного отнощеии 2.The closest to the technical essence of the invention is a ratchet variator, comprising a housing, input and output shafts installed in it, kinematically connecting them with a ratchet mechanism and a transmission ratio change mechanism 2.

Однако известна передача замедл юща , относительна сложность конструкции обусловливает больщие потери на трение 2 в кинематических парах.However, the transfer is known to be retarding; the relative complexity of the design leads to large friction losses 2 in kinematic pairs.

Цель изобретени - получение ускор ющей передачи и повыщение КПД.The purpose of the invention is to obtain accelerated transmission and increase efficiency.

Дл достижени поставленной цели зуб чатое колесо храпового механизма выполнено двухвенцовым, наклон зубьев одного венца которого-противоположен наклону зубьев другого, и имеет кольцевые пазы на обоих торцах, вариатор снабжен крышками, у которых на поверхност х, обращенных к торцам зубчатого колеса, выполнены ответные кольцевые пазы, и равномерно расположенными по окружности и закрепленными щарнирно одним концом на входном или выходном валах шатунами, несущими на других концах взаимодействующие с зубчатым колесом собачки, оси которых располо. жены с возможностью перемещений в кольцевых пазах зубчатого колеса и крышек, а механизм изменени передаточного отношени выполнен в виде взаимодействующих между собой винтовой пары и обоймы, установленной в корпусе с возможностью смещени перпендикул рно оси вариатора, подпружиненной в том же направлении и взаимодействующей с зубчатым колесом.To achieve this goal, the ratchet gear wheel is double-threaded, the inclination of the teeth of one crown is opposite to the inclination of the teeth of the other, and has annular grooves on both ends, the variator is equipped with lids, which have counter-circular rings on the surfaces facing the ends of the gear. grooves, and evenly spaced around the circumference and fixed at one end at the input or output shafts by rods, which interact at the other ends with the cogwheel of the pawl, cat axle ryh location with. wives with the possibility of movements in the annular grooves of the gear and covers, and the mechanism for changing the gear ratio is made in the form of a screw pair interacting with each other and a clip installed in the housing with the possibility of displacement perpendicular to the axis of the variator, which is spring-loaded in the same direction and interacting with the gear wheel.

Claims

FIG. 1 shows a ratchet variator, cross section; in fig. 2 is a section A-A in FIG. one; in fig. 3 -. section bb in fig. I. Ratchet variator contains case 1; mounted on rolling bearings, input 2 and output 3 shafts, kinematically connected by a ratchet mechanism. On shafts 2 and 3 on axles x 4 and 5 the connecting rods b and 7 of the ratchet mechanism are hinged. At the outer end of each connecting rod on axis 8, there is a fixed dog 9. The gear wheel 10 of the ratchet mechanism is double-ended, the inclination of the teeth of one ring of which is opposite to the inclination of the teeth of the other. The covers 11 and 12 are attached to both ends of the gear wheel 10. The wheel .: 10 and the covers 11 and 12 have annular grooves 13 - and 14 that are opposite each other and interact with the axes of the 8 dogs 9. The gear E wheel 10 is placed in the box 15 on needle bearings. The yoke 15 on the axis 16 is fixed in the housing 1, spring-loaded by the spring 17 and interacts with the screw of the screw pair 18. The device in FIG. 2 is shown at the time of maximum eccentricity. Dogs 9 are spring-loaded spring 19, directed perpendicular to the axis of the variator. The yoke 15 and the screw pair 18 form from a mechanism for changing the gear ratio. The variator works as follows. When the input shaft 2 is rotated and the gear wheel 10 is shifted by the e value of the gear wheel 10, the connecting rod 6 and 7 occupy the position corresponding to FIG. 2 and 3, whence it follows that with a uniform rotation of the input shaft 2, the pawl 9 of the connecting rods 7 move at different angular speeds relative to the gear wheel 10. The latter is driven by the pawl having the highest angular velocity. The rotation from the gear wheel 10 through the second row of rods 6 is transmitted to the output shaft 3 also with acceleration of the angular velocity. The change in gear ratio is achieved by changing the magnitude of the eccentricity in using the screw J8. During operation of the variator, there is no impact phenomenon characteristic of ratchet mechanisms, since the engagement occurs when the linear speeds of the pawls 9 and the teeth of the wheel 10 are equalized. The simplicity of the design ensures its high efficiency. Claims of the invention A ratchet variator, comprising a casing, an entrance and an exit hall installed therein, a kinematically linking ratchet mechanism and a gear ratio change mechanism, characterized in that, in order to obtain an accelerating transmission and increase efficiency, the ratchet gear of a ratchet mechanism is made with a double crown the inclination of the teeth of one crown is pro- tilting the teeth of the other, and has annular grooves at both ends; carrying paws interacting with a gear wheel on the other ends, the axes of which are arranged so that they can be moved in the annular grooves of the gear wheel and the caps, and the mechanism for changing the gear ratio olnen as interacting screw pair and holder mounted in the housing to be displaceable perpendicular to the variator axis, the spring-loaded in the same The direction and interacting with the toothed koL9SOM., information sources, the received note in the examination 1.Elementy mechanisms. Ed. A.L. Leimer. M., NCAP USSR, State. publishing house of the defense industry. 1944, p. 304, FIG. 1220.

2.Patent of France No. 444166, cl. 47 h 5, 1912 (prototype).

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