SU585337A1

SU585337A1 - Elastic safety coupling

Info

Publication number: SU585337A1
Application number: SU762363399A
Authority: SU
Inventors: Николай Антонович Кудрейко
Original assignee: Институт Горной Механики И Технической Кибернетики Имени М.М.Федорова
Priority date: 1976-05-17
Filing date: 1976-05-17
Publication date: 1977-12-25

Description

Изобретение относитс к области общего машиностроени и может быть использовано во всех отрасл х народного хоз йства дл соединени валов машин и механизмов,The invention relates to the field of general engineering and can be used in all sectors of the national economy to connect the shafts of machines and mechanisms

Известна упруга пальцева муфта, содержаща две фланцевые полумуфты и упругий Элемент в виде кольца, который соединен с фланцами поочередно запрессованными в них жесткими металлическими пальцамиThe elastic finger coupling is known, containing two flange coupling halves and an elastic element in the form of a ring, which is connected to the flanges by alternately rigid metal fingers pressed into them.

1 .one .

Известна также упруга муфта, содержаща две полумуфты с жестко закрепленными в них металлическими пальцами и упругий элемент, выполненный в виде диска с отверсти ми дл пальцев 2j , Данна муфта вл етс наиболее близкой по технической cyuiности и достигаемому результату к изобретению . В таких муфтах под действием крут щего момента участки упругого элемента между пальцами работают через один в основом на сжатие. Муфты отличаютс срав-нительно простой конструкцией, мачыми габаритами и надежностью в работе.Also known is an elastic coupling containing two half-couplings with metal fingers rigidly fixed in them and an elastic element made in the form of a disk with holes for fingers 2j. This coupling is closest in technical cyui and the achieved result to the invention. In such couplings, under the action of the torque, the sections of the elastic element between the fingers work through one basically compression. Couplings are distinguished by their relatively simple design, treadmill dimensions and reliable operation.

Однако такие муфты обладают низкими предохранительными свойствами ввиду того, However, such couplings have low safety properties due to the fact

что пальцы обеих полумуфт расположены на одном диаметре. Увеличение ншфузочной способности , муфт влечет за собой резкое увеличение 1 абаритных размеров, так как половина участков упругих вкладышей между пальцами не участвует в передаче крут щего момента . Кроме того, применение таких муфт ограничиваетс необходимостью лимитирова могп зазора между торцами соедин емых валов , что приводит к значительным трудносTfiM в процессе эксплуатации.that the fingers of both coupling halves are located on the same diameter. An increase in the nfuznaya ability, couplings entails a sharp increase in 1 of the size of the dimensions, since half of the sections of the elastic inserts between the fingers do not participate in the transmission of torque. In addition, the use of such couplings is limited by the need to limit the gap between the ends of the connected shafts, which leads to considerable difficulties during operation.

Цель изобретени - увеличение нагрузочной способности и долговечности упругой муфты путем придани ей предохранительных свойств при увеличении крут щего момента выше допускаемого;The purpose of the invention is to increase the load capacity and durability of the elastic coupling by imparting safety properties to it with an increase in torque beyond the allowable one;

Это достигаетс тем, что окружности расположени пальцев разных полумуфт концентричны одна другой, а разность их диаметров не менее 2,2 диаметра пальцев.This is achieved by the fact that the circles of the location of the fingers of the different coupling halves are concentric with each other, and the difference in their diameters is not less than 2.2 of the diameter of the fingers.

На фиго 1 изображена муфта, продольный разрез; на фиг. 2-разрез А-А на фиг. 1.Figo 1 shows a coupling, a longitudinal section; in fig. 2-section A-A in FIG. one.

Claims

The elastic coupling consists of two flange coupling halves 1 and 2, which are mounted on the connecting shafts. An elastic element 3 in the form of a disk is inserted between the coupling halves and inserted into the upper limb. The coupling is connected to the semi-coupling 1 by half of the hollow 4, and with the half-coupling 2 by the fingers 5. For spring and spring of the fingers and the half coupling, ring springs 6 and 7 are provided. ) Ei .iH shafts Q is less than the width of the elastic ring §, it can be cut in the radial direction, for example, in the plane B – B C:: the mixture of shafts is limited by the value of the annular grooves in (} ants half couplings. moment in the elastic coupling is carried out due to the complexity of the total volume of the elastic element, in connection with which the load capacity of the elastic coupling increases in comparison with the existing structures. , and the thoughts freely rotate one relative to the other with a gap O, j the diameter of the fingers. The size of the gap is due to the fact that the diameter of the circle on which the fingers of one half-coupling are located differs from dia Etra positioning adjacent fingers on the other coupling half value 2,2 di where dl - diameter fingers. As a result, the elastic coupling acquires the safety properties, and the magnitude of the allowable torque at which the elastic element is destroyed is determined from the conditions for calculating the dangerous section of the element or experimentally. The elastic element of the coupling is made of state-of-the-art polyurethane elastomers or of durable rubber with a high damping capacity. The elastic characteristic of the coupling has a pronounced nonlinear properties, which is very important when installing it on a machine unit operating in a resonant mode. Claims of the invention The elastic safety clutch containing two coupling halves with metal fingers rigidly fixed in them and an elastic element made in the form of a disk with holes for fingers, in order to increase its load capacity and durability by giving it safety properties of the circumference the location of the fingers of different semi-couplings are concentric one another, and the difference of their diameters is not less than 2.2 of the diameter of the finger. Sources of information taken into account in the examination: 1. US Patent No. 3798924, cl. 64-13, 1974. 2, V. V. Polk and I. D. Barbash. Couplings. L., Mechanical Engineering, 1973, p. 98. fig. 67 a.