SU977882A1

SU977882A1 - Wedge belt variable speed drive pulley

Info

Publication number: SU977882A1
Application number: SU813233765A
Authority: SU
Inventors: Игорь Михайлович Дорофеев; Елена Александровна Дорофеева
Original assignee: Войсковая Часть 25840
Priority date: 1981-01-13
Filing date: 1981-01-13
Publication date: 1982-11-30

Description

(54) ШКИВ КЛИНОРЕНЕННОГО ВАРИАТОРА(54) PULLEY OF THE CLEANED VARIATOR

Устройство относитс к машиностроению и может быть использовано в передачах с бесступенчатым изменением скорости.The device relates to mechanical engineering and can be used in gears with infinitely variable speeds.

Известен шкив клиноременного вариатора , состо щий из двух дисков, регулировочного винта и корпуса, относительно которого симметрично перемещаютс диски при регулировании с помоцью винта, имеющего контакт с дисками через резьбы разного направлени 11.A pulley of a V-belt variator is known, consisting of two discs, an adjusting screw and a housing, relative to which the discs move symmetrically when adjusted with a screw that contacts the discs through threads of different directions 11.

Недостатком указанного шкива вл етс сложность регулировки, св занна с остановкой вращени .The disadvantage of this pulley is the difficulty of adjustment associated with stopping the rotation.

Наиболее близким к предлагаемому по технической сущности и достигаемому результату вл етс шкив клиноременного вариатора, состо щий из двух дисков, регулировочной втулки и корпуса С2.The closest to the proposed technical essence and the achieved result is a V-belt variator pulley consisting of two discs, an adjusting sleeve and a body C2.

Недостатками известного шкива вл ютс мала точность установки заданного передаточного отношени , наличи осевого смещени ремн в канавках шкива при. регулировке и мала долговечность контактируквдих поверхностей регулировочной втулки и ступицы диска.The disadvantages of the known pulley are low accuracy of the installation of a given gear ratio, the presence of axial displacement of the belt in the grooves of the pulley at. adjustment and small durability kontaktirukdy surfaces of the adjusting sleeve and disc hub.

Цель изобретени - улучшение процесса регулировки, включающего в себ повышение быстроты, плавности и точности Установки заданного передаточного отношени , а также регулировка без прикращени работы вариатора .The purpose of the invention is to improve the adjustment process, which includes improving the speed, smoothness and accuracy of the Installation of a given gear ratio, as well as adjustment without hitting the operation of the variator.

Указанна цель достигаетс тем, что шкив снабжен ползунком, ввин10 ченным в регулировочную втулку и соединенным с корпусом посредством шлицов, и подшипниками, установленными в местах соединени втулки и ползунка с соответствующими ступица15 ми дисков, а регулировочна втулка св зана с корпусом при помощи резьбового соединени с противоположный направлением и вдвое меньшим шагом, чем резьбовое соединение втулки и This goal is achieved by the fact that the pulley is equipped with a slider, screwed into the adjusting sleeve and connected to the housing by means of splines, and bearings installed at the points of connection of the sleeve and slider with the corresponding hubs of the discs, opposite to the direction and half as small as the threaded connection of the sleeve and

20 ползунка. Кроме того, с целью точности регулировани передаточного отношени на корпусе по длине его нанесены риски, втулка .установлена с возможностью поворота относительно 20 sliders. In addition, in order to accurately adjust the gear ratio on the body along the length of its risks, the sleeve is installed with the possibility of rotation relative to

25 корпуса, а шкив снабжен эксцентричным стопором, установленным с помощью оси на втулке и фиксирующим последнюю относительно корпуса.25 housing, and the pulley is equipped with an eccentric stop installed with an axis on the sleeve and fixing the latter relative to the housing.

Claims

The drawing shows a pulley wedge30 variator belt. The pulley consists of two disks 1 and 2, interconnected by a key 3. On the hub of disk 1, a ring 4 is rigidly fixed by means of fasteners, for example screws. Adjusting sleeve 5 contacts with gear b through a threaded connection, and with disk 2 hub through contact with balls 7, which act as bearings. The slider 8 is screwed into the adjusting sleeve 5. Moreover, the threads between the sleeve and the housing and the sleeve and slider have opposite directions and the thread pitch between the sleeve and the housing is half as much as between the sleeve of the slider. The slider 8 is connected to the housing b by means of slots. The slider 8 is rigidly fixed to the ring 9, between which and the ring 4 are the ribs 10 that act as bearings. On the sleeve 5, an eccentric stop 11 is mounted with the axle, fixing the sleeve relative to the housing 6, which carries risks 12. Change the gear ratio performed as follows. Without stopping the pulley, the eccentric stopper 11 (as indicated by the arrow) is retracted and, using it as a handle, the sleeve 5 is rotated to provide the necessary gear ratio, fixed by the riser 1M 12. At the same time, by moving the slider 8 relative to the sleeve 5 the disk 1 is displaced axially and simultaneously due to the displacement of the sleeve 5 relative to the housing b, a symmetrical shift occurs in the opposite direction of the disk 2. After the adjustment is completed, the sleeve 5 is fixed on the housing 6 eccentric m rum stop 11. The application of the pulley allows to improve the adjustment process considerably economy time adjustment due to ease of installation and accuracy of the transmission ratio. Claims 1. A V-belt variator pulley consisting of two discs, an adjusting sleeve and a housing, in that, in order to improve the adjustment process, the pulley is equipped with a slider screwed into the adjusting sleeve and connected to. the housing by means of splines, and bearings mounted at the points of connection of the sleeve and the slider with the corresponding disc hubs, and the adjustment sleeve is connected to the body by means of a threaded connection with the opposite direction and in half the pitch than the threaded connection of the sleeve and slider. 2. A pulley according to claim 1, characterized in that, in order to precisely adjust the gear ratio, risks are applied to the body along its length, the sleeve is rotatably mounted relative to the body, and the pulley is provided with an eccentric stop mounted with an axis on the sleeve and fixing the latter relative to the body. Sources of information taken into account in the examination 1. Pronin SA, Revkov G.А. Stepless klinoremenny and frictional transfers (variators). M., Mechanical Engineering, 1980, p. 121, fig. 54 b. .

2. German Patent 350354, cl. 47 h 15, 1922 (prototype).