SU941742A1

SU941742A1 - Expanding safety clutch

Info

Publication number: SU941742A1
Application number: SU782565278A
Authority: SU
Inventors: Борис Георгиевич Кобцев; Василий Николаевич Коськин; Иван Исидорович Кондратенко
Original assignee: Орловский Филиал Всесоюзного Заочного Машиностроительного Института
Priority date: 1978-01-09
Filing date: 1978-01-09
Publication date: 1982-07-07

Description

1one

Изобретение относитс к машиностроению и может быть использовано в приводах, где примен ютс тихоходные многоскоростные электродвигатели.The invention relates to mechanical engineering and can be used in drives where low-speed multi-speed electric motors are used.

Известна центробежна предохранительна муфта, содержаща ведущую и ведомую полумуфты, св занные посредством ведомого и ведущего функциональных дисков, подпружиненного нажимного диска и центробежных щаров 1.A known centrifugal safety clutch comprising a driving and driven half coupling coupled to the driven and driving function discs, a spring-loaded pressure disk and centrifugal balls 1.

Недостатком муфты вл етс повышенный износ, обусловленный резким включением муфты при запуске ее на повышенных скорост х многоскоростного привода.The disadvantage of the clutch is increased wear due to the sudden engagement of the clutch when it is started up at higher speeds of a multi-speed drive.

Цель изобретени - повышение срока службы путем обеспечени плавного включени .The purpose of the invention is to increase the service life by ensuring smooth connection.

Цель достигаетс тем, что центробежг на предохранительна муфта, содержат ща ведущую и ведомую пОлумуфты, св занные посредством ведомого и ведущего фрикционных дисков и размещенных между ними пластинчатых пружин с углублени ми на обращенных одна к другой поверхност х и подпружиненного относительно ведомой полумуфты нажимного диска и центробежных грузов в виде шаров, размещенных в лунках между пластинчатыми пружин.ами, снабжена упорными шариками, на обращенных друг к другу торцовых поверхност х фрикционных ведомого и нажимного дисков выполнены гнезда дл упорных шариков, имеющие в поперечном сечении форму усеченного ромба, при этом лунки под центробежные грузы имеют в плоскости перпендикул рной оси вращени спиралевидной формы, На фиг. 1 изображена муфта, общий вид; The goal is achieved by the fact that the centrifugal clutch on the safety clutch contains the driving and driven half couplings connected by means of the driven and driving friction disks and plate springs placed between them with recesses on the surfaces facing each other and spring-loaded relative to the driven half coupling half of the pressure disk and centrifugal loads in the form of balls placed in the holes between the plate springs. They are equipped with thrust balls on the face surfaces facing each other of the friction slave and push claims are made for socket thrust balls having a cross-sectional shape of a truncated rhombus with wells under centrifugal loads are in the plane perpendicular to the rotational axis of the spiral shape, Fig. 1 shows the coupling, general view;

10 на фиг. 2 - разрез А-А на фиг. 1; на фиг. разрез В-В на фиг. 2 в рабочем положении и в станине; на фиг. 4 - разрез Г-Г на фиг. 2.10 in FIG. 2 shows section A-A in FIG. one; in fig. Section B-B in FIG. 2 in working position and in the frame; in fig. 4 - section G-Y in FIG. 2

Муфта содержит ведущую полумуфту 1 The clutch contains the leading half coupling 1

15 с диском 2, имеющим пазы 3 под центробежные грузы 4, закрытые пластинчатыми пружинами 5 и фрикционными накладками 6. В плоскости вращени пазы 3 выполнены спиралевидной формы и имеют в централь20 нрй части окна 7, закрытые пружинами 5 так, что образуют пространство под центробежные грузы в виде шариков 4.15 with a disk 2 having grooves 3 for centrifugal weights 4, covered with plate springs 5 and friction linings 6. In the plane of rotation, the grooves 3 are made spiral-shaped and have springs 5 in the central part of the window 7 that are closed with springs 5 so that they form a space for centrifugal weights in the form of balls 4.

Claims

The driven half coupling 8 is equipped with friction disks 9 and a pressure disk 10, between which thrust balls 11 are placed. The pressure disk travel is limited by the release 12 and the shortened groove 13, and the disk 10 is spring-loaded relative to the coupling half by a spring. When centrifugal forces transmit centrifugal forces weights 4 move to the periphery, wedging the springs 5, overcoming the elastic forces, the friction lining is pressed against the disks 9, dragging them into rotation, there is a choice of the gap between the disk 9 and the friction lining E 6, compression spring 14, the torque transmitted to the coupling half 8, and then operates as a safety clutch. Since centrifugal weights roll onto the springs only after the engine is accelerated, smooth start-up at various speeds is ensured. Claims 1. A centrifugal safety clutch containing a drive and a driven half coupling connected by a driven and

Lee

P

V / leading friction discs and lamellar springs placed between them with depressions on surfaces facing one another, spring-loaded with respect to the driven half-coupling of the pressure disc and centrifugal weights in the form of gaps placed in the depressions between the leaf springs, characterized in that the purpose of increasing the service life by ensuring the smooth inclusion of the multi-speed drive, it is equipped with stop balls, on the facing surfaces of the friction slave and pressure discs Enu nests for thrust balls that have a truncated rhombus shape in cross section.

2. The coupling according to claim 1, characterized in that the recesses under the centrifugal weights are made in a plane perpendicular to the axis of rotation of the spiral shape. Sources of information taken into account in the examination 1. V. V. Polkov, I. D. Barbasch, R. O. Khovsky. Coupling Handbook. L., “Mechanical Engineering, 1979, p. 315, fig. VIII 28 (prototype).