SU804920A2

SU804920A2 - Flexible centrifugal coupling

Info

Publication number: SU804920A2
Application number: SU792720938A
Authority: SU
Inventors: Анатнас-Петрас Казимерович Каволелис; Бронисловас Пранович Спруогис; Римвидас Антонович Науйокас
Original assignee: Вильнюсский Инженерно-Строительный Институт
Priority date: 1979-02-06
Filing date: 1979-02-06
Publication date: 1981-02-15

Description

Изобретение относится к машиностроению, в частности к упруго-динамическим муфтам, и может быть использовано для соединения валов и передачи крутящего момента в машинах и механизмах с компенсацией несоосностей соединяемых валов и демпфированием возникающих при этом колебаний и динамических нагрузок. ,The invention relates to mechanical engineering, in particular to elastic-dynamic couplings, and can be used to connect shafts and transmit torque in machines and mechanisms with compensation for misalignment of the connected shafts and damping of vibrations and dynamic loads resulting from this. ,

По основному авт. св. № 252773 известна упруго-центробежная муфта, содержащая ведущую и ведомую полумуфты и центробежные грузы, установленные на эластичном элементе, при 15 этом полумуфты выполнены в виде ступиц с противоположно направленными хвостовиками, образующими совместно крестовину. Хвостовики обеих полумуфт имеют прорези для размеще- 20 ния эластичного элемента, выполненного в виде пружинного кольца, а центробежные грузы установлены на кольце диаметрально противоположно [1]. ²⁵ According to the main author. St. No. 252773 known elastic-centrifugal clutch containing the leading and driven half couplings and centrifugal loads mounted on an elastic element, while 15 half-couplings are made in the form of hubs with oppositely directed shanks, forming together a cross. The shanks of both coupling halves have slots for accommodating an elastic element made in the form of a spring ring, and centrifugal weights are mounted diametrically opposite on the ring [1]. ²⁵

Недостатком такой конструкции является то, что размещение на серединах четвертей упругого кольца по одной центробежной массе создает неравномерность в нагружении упругого 30 кольца и ухудшает условия работы муфты.The disadvantage of this design is that the placement in the middle of the quarters of the elastic ring in one centrifugal mass creates uneven loading of the elastic ring 30 and worsens the working conditions of the coupling.

Цель изобретения — повышение срока службы и надежности работы муфты.The purpose of the invention is to increase the service life and reliability of the coupling.

Поставленная цель достигается тем, тчо в упруго-центробежной муфте, содержащей ведущую и ведомую полумуфты, выполненные в виде ступиц с противоположно направленными хвостовиками, образующими совместно крестовину, с прорезями для размещения пружинного кольца и центробежные грузы, установленные на пружинном кольце диаметрально противоположно, центробежные грузы выполнены составными, из равного количества элементов с одинаковой массой, размещенных равномерно и диаметрально противоположно один другому между хвостовиками полумуфт .This goal is achieved by the fact that in the elastic-centrifugal clutch containing the leading and driven half-couplings, made in the form of hubs with oppositely directed shanks, forming a cross joint together, with slots for accommodating the spring ring and centrifugal weights mounted on the spring ring diametrically opposite, centrifugal weights made of composite, from an equal number of elements with the same mass, placed evenly and diametrically opposite to each other between the shafts of the coupling halves.

На фиг. 1 схематически изображена упруго-центробежная муфта, общий вид; на фиг. 2 — то же, разрез А-А на фиг. 1.In FIG. 1 schematically shows an elastic-centrifugal clutch, General view; in FIG. 2 is the same, section AA in FIG. 1.

Упруго-центробежная муфта состоит из ведущей полумуфты, выполненной в виде ступицы 1 и ведомой полумуфты — в виде ступицы 2 с расположенными диаметрально хвостовиками 3, 4 и 5, бис прорезями в них для размещения пружинного кольца 7. Хвостовики 3, 4 ведущей и хвостовики 5, 6 ведомой полумуфт совместно образуют крестовину. Угол между осями хвостовиков ведущей и ведомой полумуфт равен величине с/ . Полумуфты между собой связаны пружинным кольцом 7, которое размещено в .прорезях хвостовиков и зажато прижимными болтами. На двух противоположных четвертях пружинного кольца закреплены центробежные грузы, составленные из равного количества элементов 8 с одинаковой массой, размещенных равномерно и диаметрально противоположно один другому.The elastic-centrifugal coupling consists of a leading coupling half made in the form of a hub 1 and a driven coupling half - in the form of a hub 2 with diametrically arranged shanks 3, 4 and 5, with bis slots in them to accommodate the spring ring 7. Shanks 3, 4 of the driving and shanks 5 , 6 driven half couplings together form a cross. The angle between the axes of the shanks of the driving and driven half couplings is equal to c /. The coupling halves are interconnected by a spring ring 7, which is located in the slots of the shanks and clamped by clamping bolts. On two opposite quarters of the spring ring, centrifugal loads are fixed, made up of an equal number of elements 8 with the same mass, placed uniformly and diametrically opposite to one another.

Работа муфты осуществляется следующим образом.The operation of the coupling is as follows.

В статическом положении и при вращении без нагрузки угол оС между осями хвостовиков 3 и 4 ведущей и хвостовиков 5 и 6 ведомой полумуфт равен Л , а расстояние от элементов 8 центробежных грузов до оси вращения муфты равно радиусу пружинного кольцаIn the static position and when rotating without load, the angle of ° C between the axes of the shanks 3 and 4 of the drive shaft and the shanks 5 and 6 of the driven coupling half is L, and the distance from the elements 8 of the centrifugal weights to the axis of rotation of the coupling is equal to the radius of the spring ring

Под действием крутящего момента и при определенной частоте вращения ведущей полумуфты в указанном направлении (фиг. 1) угол оС увеличивается за счет деформации пружинного кольца 7 и смещения элементов 8 к оси вращения муфты. Увеличение частоты вращения сопровождается увеличением центробежных сил элементов 8. Эти силы препятствуют увеличению углафС (угла деформации муфты) и стремятся вывести массы 8 в крайне периферийное положение относительно_соси вращения. Крутящий момент с ведущей полумуфты на ведомую передается за счет сил деформации пружинного кольца 7 и центробежных сил вращающихся элементов 8.Under the action of torque and at a certain frequency of rotation of the leading coupling half in the indicated direction (Fig. 1), the angle oC increases due to deformation of the spring ring 7 and the displacement of the elements 8 to the axis of rotation of the coupling. An increase in the rotation frequency is accompanied by an increase in the centrifugal forces of the elements 8. These forces prevent an increase in the angle C (the deformation angle of the coupling) and tend to bring the mass 8 to an extremely peripheral position relative _{to the} axis of rotation. The torque from the leading coupling half to the driven is transmitted due to the deformation forces of the spring ring 7 and the centrifugal forces of the rotating elements 8.

Таким образом, при установившемся режиме (определенной крутящей нагрузке и частоте вращения) работы муфты между силами крутящей нагрузки, силами деформации пружинного кольца 7 и центробежными силами, воздействующими на элементы 8 центробежных грузов, устанавливается динамическое равновесие, определяемое углом деформации муфты и расстоянием от элементов 8 центробежных грузов до оси вращения.Thus, with the steady state (a certain torsional load and rotation frequency) of the coupling between the forces of the torsional load, the deformation forces of the spring ring 7 and the centrifugal forces acting on the elements 8 of the centrifugal loads, a dynamic equilibrium is established, determined by the angle of deformation of the coupling and the distance from the elements 8 centrifugal loads to the axis of rotation.

Центробежная сила вносит элемент самонастройки‘(независимость от оборотов) и гигроскопическую связанность полумуфт и является причиной повышенных антивибрационных свойств муфты.The centrifugal force introduces the self-adjusting element ‘(independence from revolutions) and the hygroscopic coupling of the coupling halves and is the reason for the increased anti-vibration properties of the coupling.

Данная конструкция позволяет улучшить условия работы пружинного кольца и муфты в целом, что значительно повышает срок службы и надежность работы .This design allows you to improve the working conditions of the spring ring and the coupling as a whole, which significantly increases the service life and reliability.

Claims

The invention relates to mechanical engineering, in particular, to elastic couplings, and can be used to connect shafts and transfer torque in machines and mechanical gearboxes with compensation for the misalignment of the connected shafts and damping the resulting vibrations and dynamic loads. According to the main author. St. No. 252773 is known for the elastic-centrifugal coupling, which contains the driving and driven coupling halves and centrifugal weights mounted on an elastic element, while the coupling halves are made in the form of hubs with oppositely directed shanks, which together form a crosspiece. The shanks of both coupling halves have slots for accommodating an elastic element made in the form of a spring ring, and the centrifugal weights are diametrically opposed to the ring 1. The disadvantage of this design is that the placement of one centrifugal mass in the middle of the quarters of the elastic ring does not evenly load elastic ring and impairs the conditions of operation of the coupling. The purpose of the invention is to increase the service life and reliability of the coupling. The goal is achieved by the fact that in the elastic-centrifugal coupling containing the drive and driven coupling halves, made in the form of hubs with oppositely directed shanks, forming a cross joint together, with slots for accommodating the spring ring and centrifugal weights mounted on the spring ring diametrically opposed to the centrifugal loads are made of composite, of an equal number of elements with the same mass, placed evenly and diametrically opposite to each other between the shanks of the coupling halves , FIG. 1 schematically shows an elastic centrifugal clutch, general view; in fig. 2 is the same, section A-A in FIG. 1. The centrifugal elastic coupling consists of a leading coupling half, made in the form of a hub 1 and a driven coupling half — in the form of a hub 2 with diameters 3, 4 and 5 located diametrically in them to accommodate the spring ring 7. The shanks 3, 4 of the leading and the shafts 5, b, driven by the lumuffle jointly form a crosspiece. The angle between the shank axes of the shank and the driven half coupling is equal to 0 (The coupling half are connected to each other by a spring ring 7, which is located in the extending shank and clamped by clamping bolts. On two opposite ones Thursday The spring x spring ring secures centrifugal weights composed of an equal number of elements 8 with the same mass placed evenly and diametrically opposite to each other. The coupling works as follows: In the static position and during unloading, the angle od between the shank 3 and axes The 4 masters and the shanks 5 and 6 of the driven half couplings are equal to A. A., and the distance from the elements 8 of the centrifugal weights to the axis of rotation of the coupling is equal to the radius of the spring ring. Under the action of the torque moment those rotational coupling half leading in the direction (FIG. 1) The ° C angle increases due to the deformation of the spring ring 7 and the displacement of the elements 8 to the axis of rotation of the coupling. An increase in the rotation frequency is accompanied by an increase in the centrifugal forces of the elements 8. These forces prevent an increase in the angle (strain angle of the coupling) and tend to bring the masses 8 into an extremely peripheral position relative to the axis of rotation. The torque from the driving half coupling to the driven one is transmitted due to the deformation forces of the spring ring 7 and the centrifugal forces of the rotating elements 8. Thus, at steady state (a certain torsional load and rotation frequency) of the coupling between the forces of the twisting load and the deformation forces 7 and the centrifugal forces acting on the elements 8 of the centrifugal weights establish a dynamic equilibrium determined by the angle of deformation of the coupling and the distance from the elements 8 of the centrifugal weights to the axis of rotation. The centrifugal force introduces a self-tuning element (rotational independence) and hygroscopic coupling coupling coupling and is the cause of the increased anti-vibration properties of the coupling. This design allows to improve the working conditions of the spring ring and the coupling as a whole, which significantly increases the service life and reliability of operation. Claims of the invention Elastic-centrifugal coupling according to auth.St. 252773, characterized in that, in order to increase service life and reliability of operation, centrifugal weights are made of composite, of an equal number of elements with the same mass, placed evenly and diametrically opposite to each other between the shanks of the coupling halves. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 252773, cl. F 16 D 3/79, 17.12.68.