SU706619A1

SU706619A1 - Reducing toothed drive

Info

Publication number: SU706619A1
Application number: SU772496262A
Authority: SU
Inventors: Рудольф Наумович Фридман; Равиль Асатович Идиатулин; Айрат Минхаирович Абдурахманов; Сергей Константинович Глазков; Давид Идельевич Столяр; Иван Карпович Дранковский; Юрий Константинович Петропавловский
Original assignee: Предприятие П/Я В-2120; Предприятие П/Я В-2550; Предприятие П/Я А-1293
Priority date: 1977-06-13
Filing date: 1977-06-13
Publication date: 1979-12-30

Description

(54) ЗУБЧАТЫЙ ПОНИЖАЮЩИЙ ПРИВОД(54) TOOTH DOWN DRIVE

I.- . I.-.

Изобретение относитс к машиностроению; а именно к зубчатым приводам с устройства ми дл выборки зазора в зацеплент.The invention relates to mechanical engineering; namely, gear drives with devices for sampling the gap into the clutch.

Известен зубчатый понижающий привод, содержащий пр мую и замыкающую кинематические цепи, включающие черв чные передачи, и устройство нагружени замыкающей кинематической цепи 1.A gear reduction drive is known, comprising a direct and closing kinematic chain, including worm gears, and a loading device for the closing kinematic chain 1.

Недостатком этого привода вл етс то, что черв чные передачи вл ютс выходными. Это приводит к снижению нагрузочной способности привода из-за необходимости снижени нагрузки на черв чных передачах.The disadvantage of this drive is that the worm gears are output. This leads to a decrease in the drive capacity due to the need to reduce the load on the worm gears.

Цепь изобретени - повышение нагрузочной способности привода.iThe circuit of the invention - increasing the load capacity of the drive.i

Дл зтого в предлагаемом Приводе черв чные передачи размещены на быстроходных ступен х пр мой и замыкающей кинематических цепей.For the purpose of the proposed Drive, the worm gears are located on the high-speed steps of the direct and closing kinematic chains.

На чертеже изображена кинематическа схема привода.The drawing shows a kinematic drive circuit.

Зубчатый понижающий привод содержит электродвигатель 1, которьЕЙ с помощью муфты 2 и гфомежуточных зубчатых колес 3 -Gear reduction drive includes an electric motor 1, which by means of clutch 2 and intermittent gears 3 -

6, установленных на валах 7, 8 и 9 в корпусе 10, св зан с пр мой кинематической цепью, включающей широкое косозубое колесо 11, черв к 12, черв чное колесо 13 и жестко св -. занное с ним полым валом 14 ведущее зубчатое колесо 15, воздействующее на ведомый элемент 16 исполнительного механизма (не показан ).6, mounted on shafts 7, 8 and 9 in housing 10, is connected with a straight kinematic chain including a wide helical gear 11, a worm to 12, a worm gear 13 and rigidly connected. associated with it by a hollow shaft 14 drive gear 15, acting on the driven element 16 of the actuator (not shown).

Замыкающа кинематическа цепь включает косоззбое колесо 17, установленное с возможностью осевого перемещени на валу 18 и сцепленное с косозубым колесом 11. На валу 18 жестко посажен черв к 19, взаимодействующий с черв чным колесом 20, посаженным на валу 21, проход щем внутри полого вала 14 и несущем зубчатое колесо 22, также взаимодействующее с ведомым элементом 16.The closing kinematic chain includes an oblique wheel 17 mounted with the possibility of axial movement on the shaft 18 and coupled with the helical gear 11. On the shaft 18, a worm is rigidly set to 19, interacting with an worm gear 20, fitted on the shaft 21, passing inside the hollow shaft 14 and carrying the gear wheel 22, also interacting with the driven element 16.

Claims

The loading device of the closing kinematic chain contains a leash 23 acting on the helical gear 17 and placed with the possibility of movement along its axis on the guide 24. The leash is affected by an elastic element, for example a spring 25, also connected to a slider 26 movable ™ x ...,. „... :: .-., -: -: -. - -3-- 70 1 ЗДблГ-й й 12 27 and having a locking screw 28. The helical gears 11 and 17 with the loading device can be placed both between the screws and the engine (as shown in the drawing), and on the other side of the screws. Priyod works as follows. The rotation from the electric motor t through the coupling 2, the gears 3-6 shaft 9, the worm to 12, the worm gear 13, the shaft 14, the wheel 15 is transmitted to the driven member 16. To sample the clearance in engagement of the driving gear 15 and the driven member 16 the chain is loaded by appropriate tension of the spring 25 by means of slider 26. Moreover, the load is produced in one direction or the other in the direction of the axis of the wheel 17, depending on the direction of rotation of the drive. In this skid helical, the wheel 17 is mixed along the helical wheel P and within the gap additionally rotates, simultaneously providing an additional rotation of the screw 19, the worm gear 20 and the gear wheel 22, which leads to the selection of the gap in the gear 15 and 22 with the following item Kt executive mechanism. In the drive, the worm gears are located in the high-speed stages of the direct and amyking kinematic chains, which allows a significant increase in the loads transmitted by the drive. An inventive gear drive comprising a direct and closing kinematic chains including worm gears and a closing kinematic chain loading device, characterized in that, in order to increase the load capacity, the worm gears are located on the high-speed forward and close kinematic stages chains. Sources of information taken into account in the examination I. US Patent N 2070807, cl. 90-22, 1937 (prototype).