SU1280247A1

SU1280247A1 - Self-tightening drive

Info

Publication number: SU1280247A1
Application number: SU853895164A
Authority: SU
Inventors: Илья Николаевич Дочкин
Original assignee: Калининский Филиал Центрального Опытно-Конструкторского И Технологического Бюро Госнити
Priority date: 1985-05-15
Filing date: 1985-05-15
Publication date: 1986-12-30

Abstract

Самонат жной привод относитс к машиностроению и может быть применен в качестве ведущего элемента передач с гибкой св зью в различных станках и машинах. Цель изобретени - повьшгение надежности работы привода путем обеспечени автоматического нат жени гибкой св зи независимо от угла ее наклона к горизонту. Привод содержит электродвигатель 7,установленный эксцентрично на винтах 9,10, выполненных в виде полых втулок и посредством гаек 11,12 св занных с ползунами, взаимодействующими с наклонными направл ющими стоек. Внутри винтов 9,10 установлен вал 13, св занный с основанием 1 посредством лент 14,15. Гайки 11,12 жестко св заны с рычага ш, подпружиненными к электродвигателю 7. При изменении крут щего момента на валу электродвигател 7 происходит поворот винтов 9,10 в гайках 11,12 и смещение, ползунов по пазам, что приводит к автоматическому изменению усили нат жени гибкой св зи. Пружина 22 слуСЛ жит дл компенсации электродвигател 7. 1 з.п. ф-лы, 5 ил. to 00 о to 4i 1The self-priming drive relates to mechanical engineering and can be used as a leading element of flexible-coupling gears in various machine tools and machines. The purpose of the invention is to increase the reliability of the drive by providing automatic tension of the flexible link, regardless of its angle of inclination to the horizon. The drive includes an electric motor 7, mounted eccentrically on screws 9, 10, made in the form of hollow bushings and connected with sliders 11, 12 by means of nuts 11, which interact with inclined guide struts. Inside the screws 9, 10, a shaft 13 is mounted, connected to the base 1 by means of ribbons 14, 15. The nuts 11.12 are rigidly connected to the lever w, spring-loaded to the electric motor 7. When the torque changes on the shaft of the electric motor 7, the screws 9.10 rotate in the nuts 11.12 and the slides are displaced along the grooves, which leads to an automatic change in tension flexible communication wives. The spring 22 is SLT to compensate for the electric motor 7. 1 Cp f-ly, 5 ill. to 00 about to 4i 1

Description

Изобретение относитс к машиностроению и может быть применено в качестве ведущего элемента передач с гибкой св зью в различных станках и машинах.The invention relates to mechanical engineering and can be applied as a leading element of flexible-coupling gears in various machines and machines.

Цель изобретени - повьшение надежности работы привода путем обеспечени автоматического нат жени гибкой св зи независимо от угла ее наклона к горизонту.The purpose of the invention is to increase the reliability of the drive by providing automatic tensioning of the flexible link regardless of its angle of inclination to the horizon.

На фиг. 1 представлен привод, общий вид.; на фиг. 2 - вид А на фиг.1; на фиг. 3 - вид Б на фиг. 2; на фиг. 4 - схема смещени оси двигател при регулировании; на фиг, 5 - силы , действующие на привод.FIG. 1 shows the drive, a general view .; in fig. 2 is a view A in FIG. in fig. 3 is a view B in FIG. 2; in fig. 4 is a diagram of the displacement of the engine axis during adjustment; Fig 5 - the forces acting on the drive.

Самонат жной привод включает основание 1, размещенные на нем стой- ки 2, направл ющие 3 и 4, выполненные в виде наклонных пазов, ползуны -(5 и 6, взаимодействуюище с соответ- ствующей направл ющей 3 и 4, электродвигатель 7 с установленным на его валу шкивом, опираюпщйс на плиту 8, два винта 9 и 10, расположенные эксцентрично оси двигател и имеющие резьбу противоположного направлени . 1а винтах установлены гайки 11 и 12, кажда из которых св зана с соответствующим ползуном 5 и 6.The self-drive actuator includes a base 1, racks 2 placed on it, guides 3 and 4, made in the form of inclined grooves, sliders (5 and 6, interacting with the corresponding guide 3 and 4, electric motor 7 with its shaft with a pulley, resting on the plate 8, two screws 9 and 10, located eccentrically to the engine axis and having threads of the opposite direction. 1a screws 11 and 12 are installed, each of which is connected with a corresponding slide 5 and 6.

Привод снабжен валом 13, установленным коаксиально винтам 9.и 10, выполненным в виде втулок, жестко св занных посредством плиты 8 с элек тродвигателем 7. На вал 13 навиты в противоположных направлени х две ленты 14 и 15, один из концов каждой из которой закреплен на валу 13, а другой - на основании 1. Гайки 11 и 12 установлены с возможностью поворота относительно ползунов 5 и 6 во втулках 16 и 17, охватывающих гайки и жестко св занных с ползунами посредством цапф 18, а также имеют возможность возвратно-поступательного движени вдоль вала 13 и зафиксированы от поворота относительно последнего посредством шпонок 19, взаимодействующих с пазами крьшек 20 гаек 11 и 12. Направл ющие 3 и 4 выполнен в стойках 2.The drive is provided with a shaft 13 mounted coaxially with screws 9. and 10, made in the form of bushings rigidly connected by means of a plate 8 to an electric motor 7. Two belts 14 and 15 are wound in opposite directions on the shaft 13, one of each end of which is fixed on the shaft 13, and the other on the base 1. The nuts 11 and 12 are mounted rotatably with respect to the sliders 5 and 6 in the sleeves 16 and 17, covering the nuts and rigidly connected to the sliders by means of the trunnions 18, and also have the possibility of reciprocating motion along the shaft 13 and fixed from turning relative to the latter by means of keys 19 interacting with grooves of clamps 20 of nuts 11 and 12. Guides 3 and 4 are made in racks 2.

Привод может быть снабжен двум рычагами 21, каждый из которых жестк св зан одним концом с соответствую- щим ползуном 5, 6 посредством втулок 16, 17 и цапф 18, а другим подпружинен к электродвигателю 7 посредством пружины 22, упирающейс одним концомThe actuator can be equipped with two levers 21, each of which is rigidly connected at one end with a corresponding slider 5, 6 by means of bushings 16, 17 and trunnions 18, and the other is spring-loaded to the electric motor 7 by means of a spring 22 abutting one end

00

40 40

в плиту 8, другим - в подп тник 23, размещенный на оси 24, св зывающей концы рычагов 21.into the plate 8, with another into the stopper 23 placed on the axis 24 connecting the ends of the levers 21.

Привод работает следуюш 1м образом. При по влении нагрузки на ведомом валу ременной передачи на валу электродвигател 7 по вл етс крут щий момент ,a на корпусе - равньй емуThe drive works in the following way. When the load on the driven shaft of the belt drive appears on the shaft of the electric motor 7, a torque appears on the body,

Q и противоположный по направлению реактивный момент М , который поворачивает двигатель относительно оси вала 13 на угол If . Винты 9 и 10, поворачива сь в гайках 11 и 12, пере5 мещают последние вдоль вала 13, а ползуны 5 и 6 - вдоль пазов 3 и 4 на величину О O j . Одновременно ленты 14 и 15 вследствие этого смещени поворачивают вал 13, компенсиру поворот на угол Ч и вызыва дополнительное смещение 0 Og. В результате суммировани этих смещений происходит перемещение оси вращени вала электродвигател А А ДН по пр мой,Q and opposite in the direction of the jet moment M, which rotates the motor relative to the axis of the shaft 13 by the angle If. Screws 9 and 10, turning in the nuts 11 and 12, move the latter along the shaft 13, and sliders 5 and 6 - along the slots 3 and 4 by the amount O O j. At the same time, the belts 14 and 15, due to this displacement, rotate the shaft 13, compensating for the rotation by angle Ч and causing an additional offset of 0 Og. As a result of the summation of these displacements, the axis of rotation of the shaft of the motor A A DN is displaced along a straight line,

гдеWhere

5 соответствующей условию F 1 И , где 1 - величина смещени оси двигател относительно оси вала 13, а F - сила нат жени гибкой св зи, котора таким образом автоматически 0 мен етс в зависимости от момента, передаваемого ременной передачей.Дл выполнени этого услови необходимо соблюдение равенства , Ч- д Н5 corresponding to condition F 1 And, where 1 is the magnitude of the displacement of the motor axis relative to the axis of the shaft 13, and F is the tension force of the flexible coupling, which thus automatically 0 varies depending on the moment transmitted by the belt drive. To fulfill this condition observance of equality, Ch- dN

360 d - диаметр вала 13 в месте360 d - the diameter of the shaft 13 in place

креплени .лент 14 и 15. Пружина 22 обеспечивает уравновешивание веса электродвигател 7, исключа его вли ние на нат жение гибкой св зи.fastening tape 14 and 15. Spring 22 provides the weight of the electric motor 7 to be balanced, eliminating its effect on the tension of the flexible coupling.

Claims

The invention relates to mechanical engineering and can be applied as a leading element of flexible-coupling gears in various machines and machines. The purpose of the invention is to increase the reliability of the drive by providing automatic tensioning of the flexible link regardless of its angle of inclination to the horizon. FIG. 1 shows the drive, a general view .; in fig. 2 is a view A in FIG. in fig. 3 is a view B in FIG. 2; in fig. 4 is a diagram of the displacement of the engine axis during adjustment; in FIG. 5, the forces acting on the drive. The self-drive actuator includes a base 1, racks 2 placed on it, guides 3 and 4, made in the form of inclined grooves, sliders (5 and 6, an interaction with the corresponding guide 3 and 4, an electric motor 7 with a pulley mounted on its shaft The two screws 9 and 10, which are eccentric to the engine axis and have threads in the opposite direction, are resting on the plate 8. 1a screws 11 and 12 are installed, each of which is connected to a corresponding slide 5 and 6. The drive is provided with a shaft 13 mounted coaxially with screws 9 .and 10, completed in the form of sleeves rigidly connected by means of a plate 8 to an electric motor 7. Two belts 14 and 15 are wound in opposite directions on shaft 13, one of the ends of which is fixed on shaft 13 and the other on base 1. Nuts 11 and 12 are installed with the possibility of rotation relative to the sliders 5 and 6 in the sleeves 16 and 17, covering the nuts and rigidly connected to the sliders by means of the trunnions 18, and also have the possibility of reciprocating movement along the shaft 13 and are fixed against rotation relative to the latter by means of pins 19, interacting x with grooves of nuts 20 nuts 11 and 12. Guides 3 and 4 are made in racks 2. The drive can be equipped with two levers 21, each of which is connected to one end of the gesture with a corresponding slider 5, 6 by means of vtulo 16, 17 and trunnions 18 and the other is connected to the electric motor 7 by means of a spring 22 that abuts one end against the plate 8, and the other into a follower 23 placed on the axis 24 connecting the ends of the levers 21. The drive operates in the following manner. When the load on the driven shaft of the belt drive appears on the shaft of the electric motor 7, a torque appears on the case, and on the case there is an equal and opposite jet torque M, which rotates the motor relative to the shaft axis 13 by the angle If. The screws 9 and 10, turning in the nuts 11 and 12, move the latter along the shaft 13, and the sliders 5 and 6 move along the slots 3 and 4 by the value Oj. At the same time, the belts 14 and 15, due to this displacement, rotate the shaft 13, compensating for the rotation by angle Ч and causing an additional offset of 0 Og. As a result of the summation of these displacements, the axis of rotation of the motor AA DN is displaced along a straight line corresponding to condition F 1 AND, where 1 is the displacement of the axis of the motor relative to the axis of the shaft 13, and F is the tension force of the flexible coupling, which thus automatically varies depending on the moment transmitted by the belt transmission. To meet this condition, it is necessary to observe equality, W – D 360 d is the diameter of the shaft 13 at the place of attachment of tape 14 and 15. The spring 22 provides the weight of the electric motor 7, excluding its effect on the tension of a flexible coupling. Claim 1. Self-drive drive comprising a base, racks arranged on it, guides in the form of grooves inclined to the base, sliders interacting with the corresponding guide, electric motor with a pulley mounted on its shaft, two screws located eccentrically to the axis of the electric motor, and thread opposite direction set to. screws, nuts, each of which is associated with a slide, characterized in that, in order to increase the reliability of the drive by providing automatic

The tension of the flexible connection, regardless of the angle of its inclination to the horizon, the screws are made in the form of sleeves rigidly connected to the electric motor, the drive is equipped with a shaft mounted coaxially to the sleeves, two tapes wound on the shaft in opposite directions, one of the ends of each which is fixed on the shaft, and the other on the base, the nuts are connected with sliders with the possibility of rotation

74

relative to the latter and fixed against rotation relative to the shaft, and the guides are made in racks.

2. The actuator according to claim 1, is also distinguished by the fact that it is equipped with two levers, each of which is rigidly connected at one end to the corresponding slider, and the other is spring-loaded to the electric motor.

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